How to set up and connect a power amplifier in bridge mode

[@junestarningl.marshillong5739]

The way you explain and the speed of speech are perfect for me.... The best I've seen in my whole life.... I have no words to describe....

[@GLBProductions]

Thanks for watching :)

[@ozwzrd]

Not only is this series just about the only correct info on YT, the presenter is the most coherent in his delivery. Kudos.

[@GLBProductions]

Thanks for watching!

[@adakhochalai]

If people shared resources and knowledge like this guy we would have a cure for cancer and the world would be at peace. God bless this guy

[@GLBProductions]

Well I don't know about that but hopefully the world would sound better ;)

[@ricardo0349]

There is a cure for cancer but big pharm has bought the cure for Billions and have put it in a VAULT so no one can get to it. AND this is because the medical industry would lose 100's of billions . . this is what they refer to as GREED and not doing the right thing for the HUMANS.

[@spirulinachee8279]

Alexander nice comment he deserves it , nice job man i seen this video like 20 times ass reference, for every time i got a doubt. Tnks

[@zewufrancis1241]

Alexander pls I have soundstand ma 4800 each times I wan to raise the volume higher it create unusual sound or noise. What should I do

[@mindciller]

There's a cure for AIDS. They take an AIDS resistive person, take some bone marrow and transplant it, then the person is cured. Why this isn't world news every day I have no clue!! Two people have been cured this way ...proven cured 100%

[@donaldnelson976]

THE BEST EXPLANATION ON THE TUBE HE MAKES IT SO EASY EVEN A BABY CAN UNDERSTAND IT

[@GLBProductions]

Well, I'm not sure if a baby could understand it but thanks I appreciate the support :)

[@donaldnelson976]

GLB Productions THANK YOU SIR ...JUST A FIGURE OF SPEECH....LOL.

[@moritzr1749]

Best video to bridgemode on KZbin

[@GLBProductions]

Thanks Moritz!

[@guitarguy97]

This was by FAR the BEST explanation of ANYTHING I have ever seen. No joke. 100% Flawless

[@GLBProductions]

Thanks JP, appreciate your support 🥰

[@redicderldavis]

What a wonderfully concise and well presented tutorial. You are the perfect example of what a good teacher should be. Many thanks.

[@jacobs7281]

I second that.. Do you have a video detailing how to make the speaker connection(doubling impedance) for bridge mode. Thanks

[@leoneddy1492]

I can only repeat what others have said best video in how it's not only explained but practically Illustrated. Thank you so much

[@GLBProductions]

You're most welcome :)

[@creationevolution3399]

i call this "teaching by heart' simple & clear.

[@rozcelabueg1909]

I admire your safety precautions; power off, speakers disconnected BEFORE doing anything. You are a true safe pro! Thank you for your contribution to the ProAudio industry.

[@GLBProductions]

Indeed, this is most important when changing modes on the power amp! Thanks for watching.

[@hansen42001]

I was so happy that you included the "old" method, have been so hard finding out how to probably wire my speakers in bridge mode :)

[@GLBProductions]

+hansen42001 Glad the video helped! What do you mean by the 'old' method - using the binding posts?

[@MusikeXavier]

Bruno is the guru of sound engineering. Awesome presentation!

[@GLBProductions]

Hardly a guru my friend, just somebody who likes to share his knowledge with others :)

[@MusikeXavier]

Well, thank you so much, I now understand so much more thanks to your presentations!

[@kevinmccarthy4088]

Thank you for your information and the patience with which you shared it. Invaluable for those of us who are still learning about all of this.

[@GLBProductions]

You're most welcome Kevin.

[@romeojuliet7710]

This video was perfectly explained. Well detailed and said. I now understand what I was looking for. I searched the whole internet and finally got it. Thanks bro.

[@GLBProductions]

You're most welcome :)

[@davidjohnson6163]

No doubt the best explanation that I have seen so far for stereo, parallel and bridge mode amplifier settings and speaker connections. You make it real simple and easy to understand even for beginners. THANKS for such a great video.

[@GLBProductions]

You're welcome David, I have a video coming up soon which will go deeper into the various amplifier modes, stay tuned for that!

[@shaniquenelson5838]

David are u jamaican

[@nickfishermusic]

Quite possibly the best explanation of anything I've researched on youtube.... ever. THANK YOU

[@GLBProductions]

You're welcome Nick, thanks for watching.

[@mayaeulense]

thank you. greatfully without question. you explained it professionally and ultimately better then my professor did

[@GLBProductions]

You're welcome, thanks for watching! If you would like to support the channel please consider signing up to become a patron at www.patreon.com/glbproductions?ty=h Every little bit helps!

[@jeffcosner6047]

Thank you very much. It's very difficult connecting amps and speakers with someone who has never worked with sound system gear who thinks they know it all. This video, if he pays attention and doesn't get me all mixed up, will show him what I've been trying to tell him all along. I had never worked with speakon cabling before and that is what we have now and you have taught me a tremendous, invaluable amount of knowledge concerning the use of these cables. This has probably cost my friend, I know it all, tons of money. He has blown amps, speakers, tweeters...and the list goes on. Especially if I still can't get him to listen to you, me or anybody. Thanks again.

[@GLBProductions]

Sounds to me like it might be good to find another partner for your live sound gigs...

[@jeffcosner6047]

@@GLBProductions LOL. He owns half the gear and he's my brother in law. But u r rite. Live gigs we usually try to hire an outside person and throw it all on them. No, I end up being the guy who has to hook everything up while he barks and complains. Last time, I threw all that on him and he freaked out. I just ran in and fixed things real quick. IN and OUT.

[@peterward6047]

Wow! What a great video! Thank you so much for sharing this and you did it with such clarity! Brilliant teacher!

[@GLBProductions]

Thanks for watching!

[@sreedhar75perupally]

Sir you are Superb 👌 You have Superb Command on Subject. And additionally you have got a very Clear Pronunciation & Superb Voice. 👍

[@GLBProductions]

Thanks for watching Sreedhar!

[@myfight22]

Best video on stereo, parallel, bridge modes. Thx.

[@salvadorurbaez7863]

Hola quetar el mano cuantos cuesta un pawer pivi 6000

[@kawikasurf]

An extraordinarily lucid presentation of a complex and, for me, otherwise baffling topic. Thank you for sharing your knowledge and highly superior presentation skills.

[@GLBProductions]

Thanks for watching, glad the video was helpful.

[@ssurjeet48]

Thanks so much Bro i understood that the connection of mono bridge mode in my power amplifiers thanks again to going in deep details about the title

[@rodolfobaliga7577]

i don't know everything about bridge mono, now after viewing your very helpful video i learned a lot, thanks bro, keep it up.

[@GLBProductions]

+Rodolfo Baliga Great to hear, thanks for watching!

[@jacobfalk4827]

+GLB Productions so what is the output was a 1/4th inch type. Would I have to change wires up then?

[@GLBProductions]

Jacob Falk It depends on the amplifier, but I personally have never seen an amplifier with a 1/4" bridge mono output. On amps of that generation the bridged output was always on binding posts.

[@jacobfalk4827]

Thanks, helps alot

[@GLBProductions]

Jacob Falk You're welcome. If you would like to support the channel please consider signing up to become a patron at www.patreon.com/glbproductions?ty=h Every little bit helps!

[@reemtbekaan7668]

Bruno, could you please make a video about amplifier's sensivity? There is barely nothing to find about in the www...

[@juanballesteros6391]

Man you bring knowledge to beginners mode with expert information. Where's the 1000+ button LIKE for the channel. I have talk to ingeniers that seen to be friendly and wen it comes to asking a simple question they shut down and offer you "help" by a exchange of money. Thank you for sharing your knowledge I know it may cost you a lot to learn but sharing is priceless.

[@GLBProductions]

Sharing knowledge enriches everyone, Juan! Thanks for watching.

[@coreyfellows9420]

The bridge mono area was something I've always wondered about.

[@GLBProductions]

Glad the video was helpful Corey.

[@Alumaks]

Thanks for this very comprehensive guide on the bridging of the amp for one subwoofer. I almost threw away my 500w per channel power amp when I got a 800w subwoofer.

[@GLBProductions]

You're welcome - subwoofers are an ideal candidate for bridging.

[@derekmadge]

I think I can hear your 800 W Sub from here...

[@antonwijaya6084]

may God bless you.. thats very usefull information. thanks a lot

[@GLBProductions]

You're welcome, thanks for watching!

[@joeprovence8114]

I got to Memphis 15th and a ptv.2.50 amp can someone tell me the best way to wire it up to my subs

[@joeprovence8114]

can someone tell me the best way to wire it up but he'll I can't it to sound right later

[@xenomorph1317]

Glb, i love your videos, but im to dumb to understand it all. I have two satelite speakers (passive)at 120watt and 8 ohm, and one subwoofer 200watt 8ohm (passive) all with just normal wire, so no rca jacks. Can you pleas give a few examples of amplifiers i can use? Thank you

[@acidtripmusic]

Thank you so much. I needed this classroom lecture explanation! God Bless!

[@GLBProductions]

You're welcome J! Thanks for watching 😀

[@mohammadimranaameri225]

ur teaching is awesome..

[@MrJMNCE]

Sir I thank you for your video lessons here . I am a novice in what your sharing . I simply know basic knowledge on setting up my own active and passive speakers each having their own system . What I want to learn is how to combine both active and non active speakers or is this advisable otherwise I wouldn't anymore think about this . I am not really a pro DJ or soundguy and just do this as a hobby and when my friends would ask me from time to time for all of us to have fun . I learn better visually so I will be. Dry to see you doing a demo on this subject if you don't mind . You really take time explaining and showing everything in such a way your style is not. Why confusing to watch and listen too. Thank you.

[@GLBProductions]

Thanks for the message - I have a video on this subject coming up in the future, stay tuned!

[@joeymanaguelod4140]

Thank you sir from manila philippines

[@jimilee4609]

You explain things very well👍. Very Nice for us musicians who never really spend much time on this issue. Thank You!

[@GLBProductions]

You're welcome Jimi, thanks for watching!

[@electronicshelpcare]

nice

[@duodsdelacruz]

Doble +

[@djmodificationsprojects9660]

thanks this was great video, I did not understand all this for the last 20 years but from watching this I now know and can be positive of what I am doing. Thanks a lot!

[@GLBProductions]

That's awesome! I have another video coming out soon on the individual amplifier modes, stay tuned!

[@dzemoredzeposki8867]

long live brother...

[@michaelbyrne8860]

Wow I just learned some complex wiring strategies explained in clear simple way! That even I could understand! Thanks Byrne

[@GLBProductions]

You're welcome Michael, thanks for watching!

[@obidibidou6933]

Finally someone who knows how to use language to inform others without um,ah double ahhhh .In Bridge mode can you have more than 1 speaker connected ??? Thanks

[@GLBProductions]

Yes you can - up to the amp's minimum allowed impedance in bridge mode. Thanks for watching!

[@bluesurfer1255]

Thank you. Searched for 30min trying to find ANY videos on passive speakers much less how to setup properly. Thanks again. Only complaint, with my ADD mind there were few times I drifted away. [no offense but I felt like I was back in high school 20+yrs ago, listening to boring history stuff but had to fight my ADD and keep focus cuz if I don’t I’ll fail the class and have to repeat the grade all over again. 😂] ( maybe throw some jokes in smile a bit in your voice. Seem a bit happier) but other then that 1 small constructive criticisms, it was very helpful. THANK YOU👍🏻👍🏻👍🏻👍🏻🤡😉🙃😁

[@GLBProductions]

Very glad the video was helpful 😄

[@Widiar0]

Splendidly clear explanations without pointless repetitions or not needed information to confuse people with less knowledge. Was just trying to find some insight into bridging with speakon cables. I found out my amplifiers use the one where you need to reroute the wires, so will be using an adapter in the end of the cables when I need to bridge the amplifiers for larger setups. Subbed and hope to see more great videos like this in the future.

[@GLBProductions]

Thanks for watching! Another method for amps that are permanently rack mounted is to bring the amp outputs out to panel mount speakon connectors - you would have one each for channels A and B, and one more for bridge mode, wired to the binding post outputs. If you would like to support the channel please consider signing up to become a patron at www.patreon.com/glbproductions?ty=h Every little bit helps!

[@allanmibei]

I have learnt so much from your tutorials... May God bless you

[@GLBProductions]

You're welcome, God Bless you too as we move into advent :)

[@gaugericonarral408]

Hi I'm Rico from the Philippines very impressive and clear teaching thank you and lovebless...

[@GLBProductions]

You're welcome Rico!

[@RoyonNaraine]

This is the video I was looking for, best explanation an illustration, thanks

[@GLBProductions]

You're welcome Royon :)

[@himey77]

THANK YOU! How could anyone possibly "dislike" this video?

[@GLBProductions]

Those who think I speak too fast/slow or who don't get a solution to their problem in the first thirty seconds :D Thanks for watching!

[@CaryGlennDavis]

Excellent video. I've been looking for this for years now! One thumbs up from me!

[@GLBProductions]

Great to hear that!

[@ecm1932]

this teacher is very clear.One question I want to ask is what is a Rotel linkcable.I bought a Rotel RC-1572 pre-amp.The pre-amp is powered on but no signals in either input stage.

[@GLBProductions]

Sorry but you'll have to ask Rotel about that.

[@bassheart365]

Clearest explanation ever of how bridge mode works and how to modify the connectors on Speakon cables. Thank you Sir. Question: I intent to run two 8 ohm speaker cabinets in mono bridge mode (Crown XLS 1002). After modifying the amp end of my Speakon cable per the manual - I can then "daisy chain" the second speaker cabinet to the first, and I would then be bridged into a 4 ohm load, correct?

[@GLBProductions]

Correct - remember that the only modification you need to make is at the amp end of the first speaker cable. The second cable joining the two cabinets together is standard wiring at both ends.

[@charliezxi]

I’d heard about bridging before, but the technicalities I never understood, until. THIS VIDEO. LOVE YOUR FORMAT-- direct, simple, serious,, with just enough humor to keep it interesting. (“You have been warned”) Thank You! Now, can a multizone amplifier be bridged in the same way ?

[@GLBProductions]

Thanks for watching! Multizone amplifiers designed for paging and background music are typically not designed to be bridged - consult the owner's manual.

[@MrAntoniov30]

WAO BEST EXPLICATION IN ALL OF GLB Production Videos . Really Really Thanks. Very Very clear and well explained like all his video.

[@GLBProductions]

You're welcome Antonio!

[@michaelrandle1769]

Excellent. Very clear and concise.

[@GLBProductions]

+Mick Randle Thanks for watching!

[@ronnieperalta4051]

Very informative done in a way a "Teacher or Professor in school should do while teaching to students. Very WELL DONE, SIR.

[@sofroniomina3826]

My Friend thanks alot for your wonderful video. Very clear the audio and video its self. i hope you post more video like this so you can teach alot more thanks and GOD Bless you my friend.

[@GLBProductions]

You're welcome thanks for watching!

[@As5Hat]

actually insanely helpful. was so hard to get a god damn straight answer from people about mono bridge wiring for my Ampeg svt4

[@GLBProductions]

You're welcome! That amp has a dedicated bridge mono output that uses the standard +1/-1 speakon pin assignment so you can hook up with standard cables.

[@DuyNguyen-hm8kk]

FIRST!.. i was waiting for this video.. Thanks Bruno for explaining how to do Bridge mode.. i had a sense of how to but you made it really clear and you explain it so that i feel comfortable in doing Bridge mode on my QSC PLX3402.. Thanks a lot!!

[@GLBProductions]

+dee fresh You're welcome! Enjoy the power of bridging your amplifier! :D

[@geekguitars]

Thank you for saving me from my lack of knowledge!!

[@GLBProductions]

You're very welcome 😉

[@geekguitars]

@@GLBProductions I honestly had no clue that bridge mono was a little more complicated. If not for your video, there's a good chance I'd have unknowingly blown up some equipment. I'm a bassist who's using power amps to give me my stage volume.

[@GLBProductions]

Oh yes, this is one area where you really do need to know what you doing... mind you, modern power amps are generally very good at protecting themselves from all manner of human error, including dead shorts in the output wiring 😱

[@flavy1000]

Best video on this issue , reallly spot on and clear...thanks a lot!

[@GLBProductions]

You're welcome :)

[@flavy1000]

@@GLBProductions Thank you !

[@drbumface]

Absolutely amazing videos! Very informative and to the point. Thank you for making them and please keep them coming! If you're taking requests, I'd love to see a video about connecting a powered sub. Thanks!

[@GLBProductions]

+drbumface You're very welcome, thanks for watching and supporting the channel. Yes I have a video on connecting powered subs in the works. Stay tuned!

[@feliciannkwera9908]

How compressor works

[@alexchubbymclynn6060]

Most useful video! Thank you very much! I have plans to get a PA and your videos are just priceless for a dummy like me! Regards!

[@GLBProductions]

That's great Alex, welcome to the world of pro audio!

[@vintageradiobuff]

Just landed on your channel when searching for power amplifiers. Very nicely done videos with clear, concise explanations. You might want to clarify your explanation of the push-pull amplification in bridged mode, though. The graphic (and your explanation) suggests that the speaker cone is being "pushed" at the same time as it is being "pulled". This would result in the signal being cancelled, i.e., no sound would emanate from the speaker, no? What would happen if you input an audio frequency sine wave?

[@GLBProductions]

I can understand how the explanation could be interpreted in that way. The key to understanding how the two channels work is the fact that the polarity of the signal going to channel B is inverted, and that this channel is connected to the negative terminal of the loudspeaker. So when a positive voltage is presented to the input of channel A, a corresponding negative voltage is presented to channel B. Channel A applies a positive electromotive force to the speaker diaphragm, moving it forwards. Simultaneously, channel B applies a negative electromotive force, but to the NEGATIVE terminal of the speaker cone. This results in a net positive force on the speaker cone, which also moves the cone forwards. The directions are reversed when a negative input voltage is presented to the amplifier. In other words, when channel A pushes on 'one side' of the cone (the positive terminal) channel B pulls on 'the other side' (the negative terminal). The two channels thus function like one large single amplifier channel. I hope this has clarified the issue, thank you for bringing it up!

[@ronaldjean8433]

Great education. Need your assistance, I have a Marantz NR1607 received connected to a pair of powered EV ZAX1 12 inch speakers, an EV powered 18 inch sub, a 5 inch Samsung TV, a DVD player and a cable box. I am getting a loud hissing or buzzing sound out of the EV ZAX 1 speakers. Please help. I have already spent lots of money having professional techs after professional techs at the house, but the loud noise is still present. Please let me know if we can talk. I am in Coral Springs, FL.

[@Djtonydraper]

Another great video. Thanks so much for sharing.. Your explanations are always so clear & informative. You have a calm soothing way about you that makes it a joy to view, learn & listen too. Thanks again. :)

[@GLBProductions]

+Tony Draper You're welcome, glad the videos work for therapy as well as information ;)

[@Jeffreya348]

Your teachings are very clear. Is it possible to use 1 compressor for all the instruments at the same time? What's the basic compressor settings?

[@GLBProductions]

Yes you can use a single stereo compressor to compress the entire mix. Try a ratio of 2:1 at a threshold of -10dBu and adjust from there.

[@fabrisbaru4963]

I made this cable solution...the sound is much better..depth, clear and detailed..another question: the power at the output is the same ?if nominal power is 50 +50 watt whith this configuration is 100 watt?tks..

[@GLBProductions]

No the power output is generally 2-3 times the output of a single channel into the same impedance - check your amp manual for the exact figures.

[@glengatt3941]

Yes you talk in words almost everyone can understand,can you use amps like these to use in home theater like I have an av receiver but I want more power?

[@GLBProductions]

Yes you certainly can.

[@amilcarteck837]

Am glad i saw this video, you explain it better than anyone i have heard it explain before

[@GLBProductions]

Thanks for watching!

[@VanfireOfficial]

Hi, I'm from Philippines. Your videos are very helpful. Thank you for sharing with us. Just have a question because I'm planning to buy a subwoofer speaker that is 18inch 7000W. Is it okay to use this CLASS H Professional Power Amplifier which have the specs below? 1700W 8ohms stereo power 3000W 4ohms stereo power 5000W 8ohms bridge power 20Hz-20KHz, (+0/ -0.5dB) Freq. Response 300-400 Damping Factor >105dB S/N Ratio >82dB Crosstalk; 45/ s Slew Ratio 0dB (0.775V), 1V, 1V, 1.4V (changeable) Input sensitivity If its okay, how many 7000W speaker can I use when connecting into bridge mode?

[@GLBProductions]

Please watch this video it will answer you question: kzbin.info/www/bejne/omqvaKiBbL2sZtk

[@VanfireOfficial]

Thank you so much sir. This video is very clear and helpful!

[@jr.rasentertainment4074]

Thank you for sharing your experiences. Watching all the way from Vanuatu 😀😁👍🔥🔥🇻🇺🇻🇺🇻🇺

[@GLBProductions]

Thanks for watching!

[@bpcsurfboards3110]

You are a wonderful teacher.Bless you.

[@GLBProductions]

You're welcome, God Bless you too!

[@ken123167]

It's a great video! It helps to understanding about bridge mode. One thing I'm wondering is in the case of this video,the amp require 8ohms in bridge mode,what if I connect 4ohms to the amp? What will happend?

[@GLBProductions]

+ken123167 In most cases the amp will overheat and then shut down to protect itself. In extreme cases the amp will actually catch fire from the heat generated, not something you want happening in the middle of your show!

[@errolarias]

EXCELLENT VIDEO ! Thank you very much for your time and dedication

[@GLBProductions]

You're most welcome Errol.

[@kermets]

Hi, is there a cheap way to bridge a amp that does not have bridge options ? great video thanks Brett

[@GLBProductions]

There are ways to do this but I don't recommend them. Running an amp in bridge mode typically results in increased load and hence additional heat build up - this may damage an amp that is not designed to be run that way. I would say that if you need bridge mode, get an amp that is designed to be bridged.

[@sannadeesounds.sapumal4468]

Very clear explanation from you.thank u very much.

[@GLBProductions]

You're welcome Sapumal.

[@ixamedia6572]

Very Well presented! Again, your videos are very useful

[@GLBProductions]

Thanks again :)

[@mickiexposed]

Eloquently consise content. Bravo.

[@GLBProductions]

Thanks for watching Mickie!

[@titodudztv6085]

thanks so much sir.....learned so much specially cabling in dual mode

[@GLBProductions]

You're welcome!

[@Karaon]

This is very informative and straightforward. Just what I was looking for. Thanks

[@GLBProductions]

You're most welcome.

[@RadheMahato]

hi, greeting from Nepal, its really beneficial for all of us......thanks for uploading

[@GLBProductions]

+Radhe Mahato You're welcome! Thanks for watching.

[@magawill7522]

Precise and straight to the point..... God bless you

[@GLBProductions]

Thanks for watching!

[@ilove2dj422]

Great video I like the way you broke it down in the simple form. THANKS :)

[@GLBProductions]

You're welcome, thanks for watching.

[@richpaul8132]

Hi, I know it's been a while since you produced this video but it is an excellent tutorial, (as many here have said). However, I would just like to get confirmation that I understand the reasoning for a Bridge mono, (or Bridge mode), configuration. I'd like to use an example of what I think I would use this configuration to accomplish, (In the example, I'll be using round numbers to simplify the scenario): I have an older model stereo amplifier, (Sansui, circa 1985), which is rated nominally at 150 watts per channel for 8 ohm speakers. The amp has an Output selector to choose the "Speakers A" pair of speakers and a selection position to choose the "Speakers B" pair of speakers. It has a third position which permits driving the speakers A & B to be driven simultaneously, but when that position is selected, the amp's nominal output wattage is cut to 75 Watts per channel to all 4 speakers. I have no sub-woofer connections or selection for the Sansui amp, but I want to drive a powered sub-woofer (rated at 150 watts/8 Ohms), that I took from a home theater, '5.1' system. The sub-woofer also offers RCA connections for the remaining "5.1" system speakers, which I will not be using, (I only intend to use the sub-woofer to add to the Sansui stereo system). The speakers I have are Klipsch rated at 100 watts per channel 8-ohm speakers. Because I have no connection to make from the amp to the woofer, I thought I may be able to use the Bridge mono configuration shown here. The woofer has a separate power source and I don't know if it would be best to use that source, or to treat the woofer as a 'passive' woofer in order to accomplish driving the woofer through the Sansui. Would I be able to bridge the Sansui amp in the manner demonstrated in your video so it could drive the woofer through the L & R, speaker outputs of the "Speaker B" connection and leave the Klipsch connected to the L & R outputs of Speaker A selection? That's one question, which I thought I'd ask but if not, then I thought to bridge the Sansui amp's left output speaker with the woofer and the left Klipsch speaker, and leave the right speaker output as it is for the right Klipsch speaker. Of course, I could be way off and I know I likely have confused myself in attempting to do this using the bridge mono configuration. If I made any sense in my description, (and I know it's very possible that I didn't), could you confirm or correct me in that scenario? Thank you, Rich

[@GLBProductions]

Hello Rich, that has got to be the longest comment so far on this video :) To begin with, if the subwoofer is powered, it does not need a speaker level signal, it needs a line level signal derived from before the power amplifier section in the Sansui. Does the Sansui have a 'line out' or 'sub out' connector anywhere? If you are unsure, take a picture of the back of the Sansui and send it to me on Facebook and I'll be able to better advise you.

[@richpaul8132]

Wow! I can't believe you still had a watch for comments on this video! First, I just realized that I left out some important info. The Sansui A-1200 is an integrated amplifier and 150 watts per channel on 8 ohm speakers. This is not a high-end amp but was much underrated in its time. I was an audiophile from about 1980 to 1990. I sold all my equipment over 25 years ago. The system I acquired back then was a 200w per channel system with two Reel to Reel decks, two Turntables, very good EQ system, mixers and on and on. I can’t afford all that anymore but I recently started buying some equipment to build a much more modest system than I used to have. This Sansui amp has impressed and surprised me but doesn’t approach an amp like yours. (I only wish I could afford a pair of 700w McIntosh mono amps, and preamp, but between the cost and my wife, it’ll never happen, LOL). The following link is to a Sansui A1200 amp being sold on eBay. They have a pretty good picture of the back of the amp where all the connections are. You’ll note that it is not able to accept a subwoofer (as I mentioned that in my original post). This is the reason I was considering if it was possible to bridge a subwoofer into this system. In fact, it may not be feasible to bridge the unit for a subwoofer, (powered or passive). www.ebay.com/itm/Sansui-A-1200-Integrated-DC-Servo-Stereo-Amplifier-80s-Poweramp/182806275170?_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D1%26asc%3D48736%26meid%3D7915b464a64c427e9b18e0ae596e8645%26pid%3D100011%26rk%3D2%26rkt%3D12%26sd%3D171042342858&_trksid=p2047675.c100011.m1850 It may be that I’m going about it the hard way. The ultimate goal is to try to incorporate a subwoofer into the system. Perhaps 9you know of an easier way to do that, (short of buying another amp that has connections for a subwoofer). It’s very late here and I’m about to go to bed but I’ll watch for any reply or suggestions you may have tomorrow. Please let me know if there’s still some info that you need me to send. Thanks again, Rich

[@GLBProductions]

Yes Rich I monitor comments on all my videos, no matter how old they are. Ok, you keep saying you want to 'bridge a subwoofer into this system'. If by 'bridge' you mean bridge mono, that is impossible with your current setup because the Sansui does not have a bridge mono mode, therefore cannot be run in bridge mono, subwoofer or not. If you want to simply add a sub to the system, the easiest way that I can see would be to get a powered subwoofer and connect it to the receiver via one of the "REC" connectors on the back panel - those are in fact outputs from the receiver: they're meant for connecting to the record input of a tape deck but they can be used for this purpose as well. Of course, make sure that those outputs are working first, using a tape deck or something where you can monitor the output signal. Hope that helps!

[@richpaul8132]

Thank You! Yes, it certainly does help and kept me from doing anything wrong, (I probably wouldn't have tried anything without serious, repetitive, confirmation, throughout each step of the process anyway). In fact, I do know all the inputs and outputs of the Sansui are working. I presently have one Tascam 32 Reel to Reel in the "Tape 1" connections and an Akai 4000S MKII in "Tape 2". They're both connected for Record and Playback but of course, I can disconnect one of the decks for the sake of a Sub-woofer. I must thank you for answering me on this question! I don't know why, but I couldn't get a straight answer on the sub-woofer question in the many times I've tried to find out. I've been trying to find out for months whenever I'd have some time to search. I even emailed some stereo equipment manufacturers. The majority of those emails were never answered. Those that did reply, were focusing their response on up-selling one of their 'sub-woofer ready' amps and consequently, would never answer the question. Therefore, you've actually ended my search! I'm amazed that it's so simple a solution and yet, it seemed that the previous sources I had asked in my search, didn't know how to do this either. In addition, the excellent KZbin video that you have here will be invaluable to me when I do finally buy a McIntosh amp & Pre-amp (in the not-to-distant future). I know that the Macs I have in mind do have all the same options as the amp you used in your demonstration. At the moment, I've forgotten the make & model of that amp you used but it appeared to be an extremely good one. In fact, I'm surprised that I can't recall ever having heard of this unit. I live in the US, is it only sold/available overseas?. The McIntosh amps & pre-amp I'm hoping to own one day, do have all the same selections, options, and those 3-pin speaker connections, (they look like DIN style connectors but I didn't have a close look at the male end of the connector). I know this reply is long but I'm truly that grateful for your help. Thanks again! Rich

[@GLBProductions]

Yes Rich you'll rarely get a completely straight answer from anybody who's in the business of selling hifi equipment because it's in their interest to get you to buy their products rather than finding a solution based on your current setup - I get the same issues with customers who have problems with their sound reinforcement systems :) It's a shame that so few companies seem to be interested in building relationships rather than pushing product. The world we live in I suppose... Hope you manage to find a suitable sub - it will need to have its own volume control so that you can balance its output with your main speakers, unless you can find some way of controlling the REC output level of the Sansui separately from the main output level. The amp in the video is an Ecler XLA1600 - it's not a particularly good power amp ;) There are better ones from companies like Crown, QSC, Linear research and the like. The only issue you might encounter is that most modern power amplifiers are a class D design with a switching power supply. They sound good but the topology is not to the liking of all ;) The 3-pin connectors are the inputs to the amplifier, not the speaker outputs - they are called XLR connectors. Glad to be of help, let me know if you have any other questions :)

[@affonsoamericofreitasneto2324]

Hi Bruno! Your explanation about the Stereo, Paralell and bridge mode are really great. However, I have a question. In Inuke 6000 DSP, Behringer, the BI-AMP mode is equivalent to Bridge Mono mode? So, using it I need only one amp to connect hi and low frequencies loudspeakers? To connect 2 subwoofers and to HI frequencies passive loudspeakers in a chain, I need to change all of my cables? Thanks a lot.

[@GLBProductions]

Hi Affonso! No, bi-amp mode is completely different - that uses one channel to drive the low speakers and the other channel to drive the highs. If you are not totally sure about this I recommend you consult the person who sold you the amplifier and get them to show you how to set it up to work with your system.

[@affonsoamericofreitasneto2324]

@@GLBProductions thank you very much. I guess chanel A for low and B for the hi freq. I'm gonna check

[@funnymanchiobm6326]

Thanks Bruno for your educative videos. I have a problem with my 2800 watts wharfedele pro amplifier each time I use the bridge mode, it's burns my speakers. Pleases I need your help. Thanks.

[@GLBProductions]

+Isaac ohaeri Have you checked that your amp and speakers are correctly matched?

[@colleenforde8091]

Mr. B, Hope all is well You are a God send. Here's my question. I have a small Sony high fi set up the signal go to equalizer in the living room the speakers in the living room is connected to an SLA 1 amp via the binding black and red post the amp is plugged into the wall electrical out let I understand the from your video the various settings. Bridge and stereo modes, however when I turn on the units source in the bedroom then the equalizer which shows in the display there is a signal and I then turn on the amplifier there is no sound coming from the speakers What do I need to do to get them working? I set the amp in bridge mode using bare wire into the two red post one left one right as well as in stereo mode connecting the speakers to the the black and red post. As my husband who is no longer with me would have solved this issue. I hope that I say make sense as I am a neophyte to this. Blessings 🙏 Thanks in advance Pat

[@GLBProductions]

Hi Pat, thanks for getting in touch. There are many reasons why your system might not be working - each make and model of amplifier has its own ways of managing the signal so I can only give some general suggestions: First of all make sure that you have selected the correct INPUT on the amplifier - many hifi amps have several inputs: phono, CD, tuner etc. Also, make sure that signal is actually reaching the input of the amplifier - you mentioned an equalizer in your post above - if this is a separate component try unplugging it and running the source directly into the amplifier itself. Secondly, make sure that you have selected the correct OUTPUT - some amps have two sets of outputs, meant for two different sets of speakers. These are sometimes called A and B. Finally, it is likely that your amplifier should be run in stereo mode - bridge mono mode is usually reserved for driving subwoofers. Hope your can get your system working!

[@colleenforde8091]

@@GLBProductionsMr. B. Thanks for responding to me. I should have also let you know that I did not use the XLR 1/4" connectors. I just attached the speaker wires in stereo mode. Should these connectors be plugged into channel one and channel two on the amp and into the equalizer.

[@GLBProductions]

The equalizer needs to be connected to the amplifier for sure, either via the XLR or 1/4" connectors. Left output of the EQ to channel 1 of the amp and right output of the EQ to channel 2.

[@colleenforde8091]

@@GLBProductions ok. Will try. Also what is the best xlr and 1/4" brand name to purchase. Many thanks

[@djtunecooficial4962]

Thank you for making clear things on the amplifier

[@GLBProductions]

You're welcome Gabriel!

[@adilsonribeiro2665]

Thank you for sharing your videos. They are very educational.

[@GLBProductions]

You're welcome, thanks for watching!

[@PATRICKCASTILLO]

Your name should be written in the book of life! Thank you!

[@GLBProductions]

Only by God's grace my friend. You're welcome, thanks for watching!

[@PATRICKCASTILLO]

Amen! -"Grace is more like a thunderstorm than a raindrop. If you’ve experienced it you can’t miss how explosive it truly is."

[@ceejaycjmusic]

awesome... i already got the point what its means by the mode between stereo, parallel and bridge, thanks a lot for the clarify Mr. Bruno

[@GLBProductions]

+ceejay music You're welcome, thanks for watching!

[@rockalliance8815]

I recently used a yorkville px1700 and the sound went out mid way during a show. There is power and I see the meters moving but no sound is being sent to the speakers. I switched out to an older amp and the sound came back on so it’s not the wiring or blown speakers any ideas? Do these amps have internal fuses? I’m looking for some help thanks and I appreciate the videos! 😎

[@GLBProductions]

If you see the meters on the amp moving but no sound is coming out of the speakers that suggests the amp is in protection mode - did it resume working after the show?

[@rockalliance8815]

@@GLBProductions yes it turned on the other day. It was very strange. I have 4-8ohm subs and daisy chained them all to get it down to 2ohms. It must of overloaded I was only using half the power amp. Is there a way to use both A&B channels. I’m so confused but any help or direction would be greatly appreciated.

[@GLBProductions]

Yes, you can use the 'mono' mode (actually parallel mono) to send the signal from the channel A input connector to both channels without any additional cables. Re-arrange your subs so that the load on each channel is 4 ohms and then run some tests to see if the amp shuts down again. If the 'protect' light on the front panel comes on this means that there is some issue with your speakers or speaker wiring. Finally, remember that the cooling path on this amp is front to back - check to see that both the front and back of your amp rack are unobstructed (the hot air needs somewhere to go) and do not mix with amplifiers that have a back to front cooling path. If the amp shuts down again then you should probably contact Yorkville tech support. All the best 😄

[@paulmorin4453]

Hi Bruno, everything worked great as you explained, now my question is this? How do you connect exterior amplifiers without bring low pass another words connecting exterior amplifiers to sub woofer preouts? I want to know? Is it possible to connect exterior amplifiers in full range?

[@paulmorin4453]

I have a pioneer sclx501 receiver!

[@GLBProductions]

I suggest using the line out connectors to connect to external amplifiers as these will be fullrange with no low pass filter.

[@paulmorin4453]

I tried the pre/ line out before and it was blasting with no volume control, unless I hooked it up wrong??

[@GLBProductions]

No that's correct, you have to control the volume using your external amplifier.

[@yogendrapalraghav3738]

Earlier of this informative video I was planning to buy a mono amp because I like to have only one sound box, now I can buy a stereo amp. Sir, please advise me, if have 250 +250 watts stero amp then how many watts single speaker should be connected for best result.

[@GLBProductions]

Hi Yogendrapal, this video will help you make that decision: kzbin.info/www/bejne/omqvaKiBbL2sZtk

[@makstaz79]

Thank you so much for sharing your knowledge I really appreciate what you are doing

[@GLBProductions]

You're welcome Speed, thanks for watching!

[@slyspy9819]

It's very convenient that your Amplifier example has all the posts and terminals for your presentation but what about a vintage receiver or integrated amp for an example ..is this still possible to do and is it truly worth it sonically

[@GLBProductions]

Bridge mono is a feature typically reserved for higher power sound reinforcement applications - I do not recommend attempting to bridge stereo receivers and integrated amps that are not equipped with a bridge mono function.

[@slyspy9819]

Thx. I appreciate it @@GLBProductions

[@GLBProductions]

You're welcome :)

[@FIBONICITY]

Have you done one specifically on the crown xti series? I have a 4002 xti

[@GLBProductions]

No I have not. That amplifier has no physical switch to activate bridge mono mode - the switching is done from within the menu system, as outlined in the user manual.

[@jonlangford951]

Great explanation, thanks.I want more volume from Behringer PMP4000 pa, min bridge impedance is 8 ohm. I have 2 x 8ohm speakers can I connect them in series to give 16 ohm and to do this would I have to alter the internal wiring of the speakers?

[@GLBProductions]

You're welcome Jon. Yes you would need to alter the internal wiring of the speakers - series wiring is not recommended for live sound as a fault in either speaker would silence your entire system.

[@jonlangford951]

Thanks, will look for a more powerful pa

[@marysullivan2800]

LoL I've been trying to understand this for years 🤣🤣 top explanation

[@GLBProductions]

Glad I could help 😊

[@gizzardthegreat]

Watch a few of your videos on power amps, and still have a problem with mine. Great videos by the way. I acquired a wharfedale pro s1000 power amp at an estate auction. I know a little bit about the stereo equipment, but not much on power amps. My input, is a simple singing microphone. My outputs are two Bose 101 20 watt speakers. Small stuff, just trying to see if both channels work. Input a, and output a, seems to be the only ones working. Change the microphone to B, and nothing works. There are 12 mode switches, and all of them are switched down, or I would presume off. The mode switch positions and chart are a bit confusing to me. I was able to get bridge mode working I think. I switched three switches for bridge mode, and attacked my speaker to the to red terminals for bridged mono. This time, when I spoke into the mic, both signal lights for both channels lit up. So, I'm not really sure where my fault is. I have removed the top cover, just to check for any burnt fuse or loose wire or melted push thru terminal. None to be seen.

[@GLBProductions]

Hi Randy! To begin with, you really should not be connecting a microphone directly to a power amplifier - those XLR inputs are designed to accept line level signals only, from something like a mixing console.

[@gizzardthegreat]

Firstly, thanks for responding. I gathered that from watching a few of your videos, but I was really just trying to find out if all the channels worked. From watching your videos, I think I have learned that channel a input and output should work the same as Channel B input and output if they are set on stereo mode. Right now, I cannot get input b to work with output B. I know output B works because it worked in parallel mode. Bridge mode also seems to work okay. I have 12 dip switches that I think I have figured out, except for the Hertz. 30 or 50. also cant find an explanation for limiter on/off, or lo cut on/off. Kind of stumped right now with why input B won't work.

[@gizzardthegreat]

my mic input is 1/4".

[@GLBProductions]

You're welcome Randy. I consulted the manual for your amp here: www.manualslib.com/manual/190346/Wharfedale-Pro-S-1000.html On that model, with all of the dip switches down, it puts the amp into normal stereo mode, ie the two channels operate independently of one another. So to test both channels, first connect mic and speaker to input A and output A respectively. Then swap to input B and output B to test the second channel. No need to put the amp into bridge mode. If you can't get input B to work, try getting a mixer and using the XLR input instead. Hope that helps 😊

[@gizzardthegreat]

@@GLBProductions thanks Bruno, that's exactly what I did it. Everything seems to be working okay except the input B. I do have a friend with some large PA equipment, so I think that's my next step is to bring it to him and have him hook it up to his mixer. Thanks for the link to wharfedale.

[@preciousisaac2184]

Which of these would work better for looping? Sterio or dridge

[@GLBProductions]

Both would work, depending on whether you are looping in stereo or mono.

[@truesnuh4781]

Thank you sir. Absolutely fantastic tutorial and extremely helpful!

[@GLBProductions]

You're most welcome my friend.

[@patony_1288]

Hello so you say bridging the amp allows you to connect to one large speaker, but what if you want to connect to two speakers , How then? One more question I have a pair of Westlake 10" studio monitors spearkers , if a amp doesn't have enough power to push them would they sound like they are baffling with a lot of (highs) with not enough Bass? Because I have heard these name brand speakers ( 8" ) plays, the Bass sound coming from them were (Round) and powerful.

[@GLBProductions]

To connect to two loudspeakers you would daisy-chain them together, so amp -> first speaker -> second speaker. I'm afraid I can't answer your second question - suggest you ask somebody who is familiar with those particular speakers.

[@patony_1288]

@@GLBProductions Thanks

[@suchitragowra]

Please add effect of dc offset at the output of amplifiers and how it affects the speakers in bridge mode. Also how to ensure the amplitudes of the inverted signals are exactly equal?

[@GLBProductions]

DC offset in a pro audio amplifier is not something that the end user can adjust. You can measure it but unless it is causing audible distortion I wouldn't worry about it.