Life S5 | Part 6: Final Measurements

[@euroshopperbier1337]

watched this whole thing again and i hope you're doing well. Do miss this channel though. Cheers, M

[@rhedeymiklos5190]

I just say, as many other subscribers, a BIG THANK that you created and managed this channel in this manner. One of the best documented and scientific argumented DIY audio sites I have ever seen on youtube. Greetings from Romania.

[@antinoriberenice]

this is the only guy who shows how to really make a speaker, i can watch him plan, design, build and mesure speakers all day, in fact i had seen life s5 playlist more than 3 times now, thanks for all the info, greetings from Argentina.

[@ImpulseAudioSpeakers]

Wow you’re dedicated. Thanks for watching.

[@antinoriberenice]

@@ImpulseAudioSpeakers it's true, every time i come back to this series i pick up some new hint, some new peace of information or simply i get inspired, i hope you come back with some new project (could be any type of speaker) with a lot of technical info and measurements, it's crazy how much one can learn from youtube. I'm waiting for the ceiling speaker project (yes, i read the comments too.)

[@maz4bz592]

The description of how to interpret the graphs is gold and helps one to see into the practical application of this to the finished system. Huge thanks.

[@stephenyoud6125]

Exceptional measurements. Well done

[@antonrnnedal7797]

I love these kinds of videos. No audiofool opinions, only raw data and facts. Keep up the good work!

[@kennethkennelty7652]

This a perfect series for those just starting their own original builds. Enough tech not to completely blow your hair back. Good Job!

[@ImpulseAudioSpeakers]

Interesting you say "enough" tech. I usually have about 2 or 3 minutes of blabbering on each slide and carefully edit them all down to just the most needed information. I figure nobody wants to stare at a measurement for 3 mins and listen to me. Then once it's ready to go I still wonder if it's too much or not enough. I often wonder "should have I mentioned this or that" or "may I should cut out that thing...". Good to hear the balance is there. Thanks.

[@kennethkennelty7652]

Impulse Audio You demonstrated measurement and interpretation in a logical and practical way. It was very clear in a short video. My only complaint.......get a turntable. 😉

[@pabloosvaldopenizzotto1098]

Please do not apologize for doing a very technical content. The measurement you have made are awesome!! Congratulations!!

[@maz4bz592]

Brilliant! So informative. The episode where you compare and contrast the 5 top submitted designs was super insightful. Really appreciate your time and the effort to produce these. Thank you.

[@300ZCorradoVR6Z]

Man I like the view from your anechoic chamber. :)

[@utubecomment21]

This has to be the most interesting Audio channel since PWK left the scene!

[@linandy1]

True, alot involved. A year later im still working on my build. Its a 3 way with twin 8 woofers.

[@vemsom]

Great video (series). I wouldn't mind them to be even more technical. Perhaps you could do a technical series for those of us who really like that part of you videos. I'd also loved a extended version of your xsim and crossover videos. Thank you so much for your great work, I'm already looking forward to the next one. Best regards, Fredrik

[@JosephCrowesDIYSpeakerBuilding]

Great measurements! I have the same woofer sitting on a shelf...I’ll have to re-investigate. 👍

[@PA5cAl1]

Really interesting how you were able to make that tweeter work up to 1.6kHz. I have tried to make them work with a 6inch mid-woofer crossed at 2kHz but wasn't quite able to get it to sound right. The 6inch midwoofer was probably a lot more efficient though which potentially caused some of the problems I had. I did really like the small frame, allowed it to be placed very closely to the woofer which does pay off. I expect you are using some kind of series LRC circuit on the tweeter or maybe a simple parallel resistor to supress their resonance because it is quite severe.

[@ImpulseAudioSpeakers]

PA5cAl1 part of why this tweeter works so low is the application. A pair of 6" woofer towers in my living room would make this tweeter scream for help at even modest levels. Given the 1m listening distance it is comfortable doing what I need. So thats the big difference most likely. The Lpad has a 6.2ohm resistor in parallel which really whacks down the impedance combined with the second order filter which has an inductor to parallel means the Fs peak is dealt with no problem. Had I really pushed it low eith just a simple cap I probably would have required the LCR. Good call though. Hope you got it to work eventually.

[@wcg66]

Awesome series, I've learned so much. Please keep the technical content!

[@Przedzik]

Hello, just to replay to your last words. Your videos are truly pact with useful information it’s years of experience in each episode:) so we’ll explain all imported aspects of building great speakers. I only found this chanel yesterday but can’t stop watching over and over some videos (so intense) hope you grow BIG. Love to see You touching transition line subject :)

[@derekjarman1638]

Lots of good info - thanks Ryan. Congrats on 1k subs!

[@MechaUsagi]

I don't know anything about speakers, but I really nejoyed this overview of how speakers get made. Watched all the videos start to end.

[@ImpulseAudioSpeakers]

Mei hey thanks for the comment. Interesting that you don’t know about speakers but you watched this. How did you find these videos?

[@MechaUsagi]

They came up as recommended. I've been watching a bunch of hi fi related videos recently, audiophiliac, PS audio and some other stuff. I love knowing how things work and how they're made.

[@josephanselmo6863]

All your videos are good broo. I'd like to have those things clear in my mind as you do. Keep going.

[@uscfroadie]

Congratulations on more than doubling your subscribers since this video aired just a few months ago. Very well deserved.

[@Helectronics]

Great series, keep up this good work!

[@ДмитрийКузнецов-п8ч]

Yes. Very good DIY audio related video. A lot of useful information.

[@edwardcase]

Very nice F/R curve

[@mikelshanani9304]

awesome video really had fun watching, I got a questing, i want to get measurement mic within 100$ budget, whats the best option and will the mic be accurate enough?

[@ImpulseAudioSpeakers]

mikel shanani for $100 I would buy the minidsp umik. It is accurate enough for the average DIYer absolutely. I will try to get around to a video about software options and equipment for DIY speaker building.

[@mikelshanani9304]

wow thanks for the fast reply, i was told to get that mic but now im more then sure that this is what i should get, thanks for the help!

[@abr8850]

Hi, i really enjoy your videos on KZbin. I use to build some speakes, can you tell me which software you used for the measures. I want to build a high power 4 ways speakers with a closed box for the subwoofer, and another close box for the second high woofer and a midrange and tweeter. I use the jbl pro 6 by 9 639 , which is a three way and i will add a subwoofer in that box, so all the driver will be close together for a coherent sound including the bass that is out of tune in almost all speaker installation. to divide my frequencier i will go to a fully digital crossover-amps solution which is easier to tune and should permit finer ajustment and go to 48 db per octave. when i was building speakers it cost me a lot in capacitors and coils and it was time consuming to solder everything .

[@ImpulseAudioSpeakers]

A Br sounds like a fun project! I use SoundEasy but don’t recommend it. My biggest recommendation is HolmImpulse. Second is Room EQ Wizard. Give either of those a try and I think you’ll succeed.

[@jonhexom8310]

Good video, Ryan. Nice to see the series wrapped up. Will the final crossover schematic be public?

[@ImpulseAudioSpeakers]

Jon Hexom thanks! I have been debating giving out the XO. Its something I havent done for quite a while. Depending on the circumstances I may share it with individuals. Also, I may do one more video talking about the subjective sound, show my desktop area, etc. We'll see. Thanks for following along too!

[@Brant_Channel]

Great video. Tks for share your knowledge!

[@joecox9958]

Super nice! thanks alot! where can I find the box size and crossover component values?

[@adi.sax.ardelean]

hey. how far is the microphone putting a speaker right? is that true for the same distance? if I put the speakers out front to the sky to avoid sound reflections is correct? thank you

[@ImpulseAudioSpeakers]

ady sax it really depends what you’re trying to do. A small driver, 0.5m is ok. Bass response, nearfield. A large speaker, 2m sometimes. The further back you go the more reflections you let in though. So you have to be careful. Pointing the speaker straight up will still have reflections from the ground unless it’s an infinite baffle measurement.

[@adi.sax.ardelean]

@@ImpulseAudioSpeakers Thank you so much! I have 2 subwoofer horn dy (dynaccord fx20) and 2 satellites fx12 and I want to do a calibration and linearization of frequencies . I will do an outdoor measurement for a real preset without frequencies amplified by the environment.

[@WV591]

if that was an 8 inch driver and could reach 35-40 hz, that frequency plot would qualify for a studio monitor.

[@dougg1075]

Beautiful stuff man. Wish I had your skills. Subscribed!

[@davidbudo5551]

Great work!

[@philvale5724]

Hi Pulse Audio , Have you ever made transmission line speaker cabinets, I made mine about 40 years ago they have a line length of around about 12 1/2 to 13 feet and I am looking to replace the woofer and the Twitter how’s the Twitter Osbornes out due to my amp packing up and I’ve been looking at Seas speakers 🔊, 8” but having problems matching tweeters, I do not have testing equipment and I’m relying on somebody give me some information to match a Twitter, And I think I need to build a Nother crossover unit . Not sure whether you can help to give me some information, Phil from the moulin France,

[@ImpulseAudioSpeakers]

Hi Phil. I don’t have a ton of experience with transmission line speakers. I like the concept, just have never felt the cost/benefit ratio made sense, so never built any. I think you’d get better advice from someone else.

[@philvale5724]

Okay, thank you for reply, Phil from the moulin ,

[@yvesboutin5604]

You deserve your success, my man! This is a great channel! Since it will be used as a desktop speaker, wouldn't had been better to make your measurement from a desk or a table to simulate real world environnement and see how it behave?

[@ImpulseAudioSpeakers]

Yes and no. I considered the angles and the types of reflections I would get, but it would be an error to try and correct a room or placement problem with the XO design. That always leads to a bad sounding speaker. Our brains decipher a source sound and a reflection/room sound very well. Speaker bad, fix speaker. Room bad, fix room.

[@yvesboutin5604]

@@ImpulseAudioSpeakers Thank you for the clarification!

[@Toid]

Great video! I hope to see it on DIY Sound Group. Keep up the awesome videos! I look forward to your next build!

[@zoxwolf2133]

Very informative videos you have :) Unfortunately i didnt found loudspeaker phase curve extraction and incorporating these in Xsim. Though you have so much videos i ned to check. I can see you use DaytonAudio WT3 tester. I plan to get DATS V2 from "SoundImports.eu". Is DATS V2 better measuring device? Further more i am planing to buy also DaytonAudio "OmniMic V2" with software. Do you have any advices and comments regarding these units? What would be better and more precise unit, DaytonAudio "OmniMic V2" with its software or just to buy DaytonAudio UMM6 (or UMIK-1) usb mic and use REW or HolmImpulse as software? Do you care to comment or if you never had contact with these units at least can you peek at specs of certain units and say a word :) Thanx mate Cheers

[@sharepointpro479]

Hey Ryan, you got me interested in these little woofers, any chance you could share the vector or design so I can get the GCODE out of it?

[@tshuper]

Great video! Any thoughts on selling flatpack kits directly in Canada? Definitely interested!

[@ImpulseAudioSpeakers]

Shoop I've thought about it, but it's really hard to make it worth it. I'd probably sell kits if I did. So, XO, drivers, baffle, port, etc. But the buyer would have to build the cabinet and apply the baffle. Then finish them how they like. I don't think I'd enjoy doing that enough though. I prefer to just create these things and work with video. If enough people wanted a set of these specifically and I could do a run of say 15-20 cross overs and baffles I could do that. That would be 7-10 people interested.

[@dansantoso48]

Halo i will make my 1st time woofer cabinet. Do u have video how to measure from basic? Where to put speaker in the room? How far mic from speaker? How tall the speaker from floor? Etc. Thanks

[@ImpulseAudioSpeakers]

Dan Santoso sorry I haven’t done a video like that yet, but I’d like to someday.

[@MasterAudio56]

nice video

[@johnwooton2008]

Do you think the 8 ohm version of this woofer could be a direct drop in for those of us with wimpy amps?

[@ImpulseAudioSpeakers]

Unfortunately not. The impedance would be double, so the inductor would have to be double the size for starters. There would be other changes too. This woofer is 4ohm but the final result is not that difficult of a load for amplifiers. I wouldn’t worry about that. Especially since you’re not going to be able to pound on them very hard anyways.

[@johnwooton2008]

@@ImpulseAudioSpeakers Is it possible to get the final crossover & box enclosure size?

[@ImpulseAudioSpeakers]

@@johnwooton2008 hi John. I’ve never provided that publicly. I’ll give it some thought. A few of the viewer submissions were pretty darn good.

[@LostArkitekt]

I know these are meant as desk speakers, but do you have any suggestion on modifying them to be used as bookshelf speakers in an apartment sized living room?

[@ImpulseAudioSpeakers]

LostArkitekt I’ve been using them in my living room, even cranking them up pretty high, and they’ve performed flawlessly. I would port them if using them in a living room permanently, or use a sub. Otherwise they could probably be used for many other applications.

[@LostArkitekt]

@@ImpulseAudioSpeakers could you send me a PM (can't send you one)? I'd like to ask you a couple of questions.

[@ImpulseAudioSpeakers]

LostArkitekt the best way to get a hold of me is [e-mail] but I’m slow to respond and I don’t review crossovers for people. Otherwise I try to answer questions about the videos. I respond better to comments here though.

[@tompa8945]

Great work and video! Where can I find these speakers as diy, near Sweden?

[@ImpulseAudioSpeakers]

dennon carlander to buy? I’m not sure. Can you get SB Acoustics and Vifa drivers in Sweden? Thank you!

[@tompa8945]

@@ImpulseAudioSpeakers yes, the SB Acoustics and the Vifa drivers can I get. It's the cabinet and crossover design that is the big question how..

[@ImpulseAudioSpeakers]

dennon carlander well the cabinet is easy if you can do woodworking. It’s a simple box especially if you go sealed. For the XO I discussed several options in Part 4 I believe it was. My final version has not been published but there were several good options I shared and the files were made available for use in Xsim to design a XO the way you want if you would prefer. I have given the XO to one other person with the understanding that they would make a charitable donation.

[@IliyaOsnovikov]

So it seems that other crossover you have reviewed with a slight bump in the 1000-2000Hz area might be even better.

[@ImpulseAudioSpeakers]

Илья Основиков why would that be better? A peak in that region would sound a little unnatural.

[@IliyaOsnovikov]

At 3:55 you have mentioned the lack of energy in that range. And prior to that you showed on simmulation that it could be a suckout in a crossover range above axis. And I've got an impression that the Mr. J's crossover might help in that regard as it has a small hump in that range.

[@ImpulseAudioSpeakers]

Илья Основиков oh I see. That’s very perceptive of you and yes, because of the lack of energy in the off axis response graphs there is a dip in the overall power response of this speaker. It is actually very common in all speakers. It really comes down to what would sound worse, the dip in power response or a peak in the axial response. With a desktop speaker like this the peak may be the least offensive as the power response will be a major contributor to the overall sound. More than the axial response?? I’m not sure. It would be a close call. Overall we are fairly use to hearing that dip in the power response and because I limited it as much as practical because it’s a desktop speaker (close driver spacing, small woofer, etc.) I do think I made the right choice, but you are completely correct to think a peak would be the better choice. Nice work! Very happy to see viewers with such a keen eye!

[@AK-de3ej]

So, finally which crossover was used to prepare this measurements?

[@ImpulseAudioSpeakers]

TL Tester none of them :) I’ve kept that to myself. They were suppose to become a kit for diysoundgroup.com but he hasn’t listed them for some reason. I know he has the wood work cut already so not sure what the hold up is. He can usually price kits cheaper than someone can buy the parts.

[@ГрубичАлександр]

Could you tell the difference in sound between: vifa xt25sc90-04 and Vifa XT25BG60-04

[@ImpulseAudioSpeakers]

If they were implemented the exact same, it would be tough. Overall they’re easily different enough that I can tell. The BG60 is a bigger tweeter with more range. I would only use the SC90 in a small format speaker like I did.

[@ГрубичАлександр]

@@ImpulseAudioSpeakers Thanks for answering. I now have Vifa XT25SC90-04 in stock, I want to stitch them with Scan-Speak D7608 / 920000 at 4.8 kHz - 5kHz. And now the question is: If I sell: Vifa XT25SC90-04 and buy: Vifa XT25TG30-04, vifa xt25bg60-04, Scan-Speak R2604 / 833000, Scan-Speak R2604 / 832000. What do I get? will the schedule be smoother? Will it get any better? What would you do? You have a lot of experience, I do not.

[@ImpulseAudioSpeakers]

@@ГрубичАлександр it really just depends what your project goals are. A speaker like this is small and isn’t expected to hit high SPL levels. A larger speaker will benefit from the bigger tweeter. Depends what you will want. Mostly how low you want to cross over.

[@ГрубичАлександр]

@@ImpulseAudioSpeakers Thank you, I will probably leave the Vifa XT25SC90-04.

[@Waltkat]

Wouldn't it be easier to put the speaker on a lazy susan (turntable) when doing the off-axis measurements? It looks like you have the tools to make one that has calibrated locking stops for each of the positions needed.

[@ImpulseAudioSpeakers]

Waltkat yes but I’m too lazy to build one! I’ve been meaning to build one for years now, but my old protractor keeps me going.

[@cnccnc1738]

I love audio chickens.

[@sudd3660]

i like those speakers : ) to bad its not on diysoundgroup.com, they only got ported speaker, i dont like that. sound quality comes first and sealed box is the best for that.

[@ImpulseAudioSpeakers]

sudd he keeps saying they’ll be put up, but not sure what is going on.

[@MrArnand]

To eliminate the edge diffraction, I guess it would be reccomended to slope the baffle to 35-50 degrees?

[@ImpulseAudioSpeakers]

Arnand de Jager do you mean a chamfer on all the edges? Yes that helps a lot. I knew the way I built it would have diffraction, I just wanted the look.

[@MrArnand]

No I mean like really slope the front baffle. Like something used on heissmann-acoustics.de/en/dxt-mon-rly/ :)@@ImpulseAudioSpeakers The designer talks about the effects on: heissmann-acoustics.de/en/schraege-fasen/

[@ImpulseAudioSpeakers]

Arnand de Jager yes the way that person has done it will help with diffraction. Nice look too. I did a video about diffraction. There’s several ways of reducing it.

[@hardcorecap]

Have you given REW a shot for measurement yet?

[@ImpulseAudioSpeakers]

CAP Yes Ive used it quite a bit. Very popular and very powerful!

[@MadeinPolandno]

Super🙂Poland 🙂

[@papa7an]

Is that the cat screaming on a background side? 😀

[@ImpulseAudioSpeakers]

Александр Стрекалин haha, no I think that was my kid in the background. If they're around I have to tell them to be quite just when I take the measurement.

[@robertthurston6858]

HOW DO THEY SOUND??? MY EARS AREN'T MICROPHONES.!!!

[@ImpulseAudioSpeakers]

Actually they are. Your brain is not though. Your brain interprets what you hear.

[@mohammadalsammak3995]

for information transmission line please thnx

[@Istocemosad111]

Can you send me a crossover diagram for your speaker?

[@ImpulseAudioSpeakers]

Sorry I don’t do that. I did show a couple good examples to work from.

[@Istocemosad111]

@@ImpulseAudioSpeakers Why don't you share, you're stingy? Imitate N.Pass he shares a lot.

[@ImpulseAudioSpeakers]

@@Istocemosad111 I use to share them and I would get asked a lot of questions that took up too much time. I then asked for donations to ANY non profit of their choice. Nobody would do it. Not one person. I also wanted people to learn rather than just imitate, so I started the channel. I provide free lessons, free driver files, free opinions of drivers, and lots of examples. I don’t think I’m stingy unless asking people to donate or learn something from my free help is stingy. Now I just have a blanket policy to not do it.

[@Istocemosad111]

@@ImpulseAudioSpeakers After complaining and whining a lot, the only question left was do you want to help or not?

[@ImpulseAudioSpeakers]

@@Istocemosad111 I’m not sure what you’re suggesting? That I’m whining and not helping?

[@insulter4625]

Hello fRom Russia. When we conqueR youR countRy, I will listen to Judas PRiest oR ManowaR on this speakeRs.