2 subwoofers vs. 1

One subwoofer is not enough! And check out our newest KZbin channel / @octaverecordsanddsdst... Octave Records.

[@chrisgoodson9312]

There's a lot of economics to consider here. The biggest one with two subwoofers is the cost of the divorce.

[@God-yb2cg]

Imagine marrying a woman who wouldn't let me pursue my hobbies, I would rather stay alone forever.

[@hellodavey1902]

🤣🤣

[@dougleydorite]

I thought you meant when you want to go with different subs and have to deal with 2 instead of 1. Obviously I’m not married

[@PrettyGoodShot]

If you can't afford two subwoofers, you can't afford one.

[@JayC2k08]

Lmao

[@mrpmj00]

I have 4 sealed subwoofers. Music uses 2 subs at the front of the room. Movies in a 7.4.4 setup uses an additional 2 sealed subwoofers to the left/right of my couch. music source=Apple Music lossless.

[@tj-yb1pc]

100% correct about a system not being complete without at least one subwoofer, it's like the missing piece that sub fills

[@sometimesreviewsandthinkin5056]

I Agree subwoofers are optional but once you have they its gard to listen without them

[@xivwords5448]

1:38 when it starts

[@greatbrololshorts2899]

Can you do this on all of them

[@FearOfDeath1332]

Can you all just learn to relax before you learn. 🎉

[@Richard-cq4kv]

Taking the "low sum out" of a 3-way active crossover to a subwoofer amp set for "mono in/stereo out" turns a tri-amped system into a beast. It makes watching NHRA Top Fuel drag racing an experience.

[@acreppinstp]

listening to music without a subwoofer is like eating cake without the frosting, milk without cereal, sex with a condom.

[@Gregor7677]

Thanks Paul. Great information. I'm subscribing. I was born 71 years ago today and I hope I still have a lot of years to enjoy this hobby.

[@oscarkorlowsky4938]

I was born 20 years 11 months and 12 days ago, and my father was born in 1945 he is the reason I'm a young audiophile

[@nov3316]

@@oscarkorlowsky4938 what the frick is that age gap

[@jmcpherson8772]

Gregor7677 Go hard son 😎🍺

[@patwams48]

Happy belated

[@aswinsa7281]

A lot of ears too enjoy

[@zoltangz]

Watching Paul in these series is like traveling in a time machine!! Going back in time from the present videos to 5-6 years backwards! LOL

[@dajmasta94]

Thanks Paul I absolutely love your videos! Just ordered a second sub and can’t wait to hear what it does!

[@hansformat]

Your videos are great. The experience of a lifetime in the industry producing fine products and treating customers right comes through.

[@ytb13]

In car audio atleast having two subs gets you more sound for the money. It allows you to have stereo sound so it can fade left to right and is usually better placement in a car. For example with two subs they'll be each positioned behind the left and right seats instead of center of the car so the bass will hit your back instead of right ear only. It's possible they'll be slightly out of sync though and worsen sound quality. I haven't heard of this being a problem.

[@zeroumashi2947]

I read through some forums a while ago and there were some companies that recommended to setup one subwoofer on the center pre output and the other on the lfe/sub output of the a/v receiver. They also mentioned about finding the sweet spot for the subwoofer by putting the subwoofer in the listening position.

[@juliaset751]

I love the diffraction grating your shirt is using, cool effect.

[@chasevineland1508]

That hat goes well with tevas, raybans, jeans, polo shirt and a Miata

[@RobWhittlestone]

Hi end audio, stereo subwoofers and a Miata. Life can't get much better ;-)

[@derekriggs7659]

Many years ago I read an interview with one of the founders of the company Lexicon. Lexicon make high end reverb units (to give music some audio space, for those who don't know) he said that you should use two bass or sub woofers because they put out of phase components into their reverb to widen the stereo perception. They do this because there are out of phase components to real world reverbs and spaces. so the reverb from each speaker is subtly different. if you use just one sub woofer then this effect is made into mono and lost. Lexicon Reverb is used on most music recordings to support or supplant real reverbs, even when the musicians think it isn't. so it WILL make a difference. at least that's what the guys at Lexicon say.

[@mainsource8030]

subwoofers and I are good friends to, funny since we became friends all my other friends dont like me anymore, they talk behind my back saying chris's new friend subwoofer is a loudmouth , you can hear him a mile away! get it, lol!

[@MrJamescord]

Thanks, I have a set of older really tall Logan Martin speakers and I was thinking of adding a sub. Now I will just go ahead and get 2 good subwoofers.

[@glenncurry3041]

Laws of physics. Directionality is determined by a source signal hitting each ear at slightly different times causing a phase and level difference between them. You can not determine the source location of a sound if the frequency wavelength is lower than the distance between your ears. Below that frequency the wave hits both ears relatively in phase. No differentiation. If you can identify the location of a subwoofer in a room sonically it is because it is producing sounds above that frequency.

[@aparneomai]

Wouldn't that be high frequency and not low? 30 Hz is a 30 foot wave right?

[@damianhgn]

No, a 30Hz wave would have a wavelength of approx. 37.7ft assuming that the speed of sound where you are is roughly 1125 ft/s.

[@JohnMorris-ge6hq]

Paul McGowan In Rock and Pop music all low bass is mono in the mix. But Classal and Jazz is a different story. Pressure waves can be a factor in determining where the low bass is coming from. But not with Rock and Pop. Below 80hz is omnidirectional. In 5.1 mixes it's mostly going to be in the low effect channel. Hint: Not every audio engineer uses the low effect channel and they DON'T LIKE THAT AT MASTERING. I have had (and others) the 5.1 mixes sent back with note, "Nothing in the low effect channel..." I try to tell them that's how I want it because I want stereo bass. And then I get a long, long, long lecture on acoustics and that persons with cheap systems can't have low bass in their main speakers because they can't handle them. I point out that all home systems have bass management so that no low bass is gonna get into the mains and blow them up. In fact no bass of ANY KIND will get to any of the 5 speakers of a cheap ass Home Theatre In A Box system. But no one listens..... Those $300 in a box Home Cinemas should be outlawed! Anyway, those aren't subwoofers. They are woofers. 100 - 300 hz. They handle all of the bass and them some. But in the manual of your spiffy new Home Theatre System it says - YOU CAN PUT A SUBWOOFER ANYWHERE. Not this thing you can't. At 300hz you goona know where this thing is at all times. And the THD of these cheap amps can reach as high as 5% at loud volumes. I guess it way better than a sound bar but Jesus..... You make a good point. But with todays modern music it's pointless. Stereo music before 1973 is where you get bass and kicks mixed all over. And of course stereo miked music like: Folk, Jazz and Classical. But even that is ending. Some mastering engineers have started to mono the bass below 80hz. Even in classical. Sad, but true.

[@drongojonkins8945]

Fuck you for making me click that Nicholas Brown

[@mindtraveller100]

@John Morris "And the THD of these cheap amps can reach as high as 5% at loud volumes." ANY amp can reach a THD of more than that, IF you pushed them beyond their limit. The thing tough, is that a high power, high quality, amp, will have a limit high enough for you not need to push them byond that.

[@David-ei5lq]

Thank you! I went from a single sub with two satellites and then added the second matching sub in my music studio. The satellites roll off at 120 and there is a noticeable difference. Especially with a properly sampled pipe organ being played. Also if a bass signal has any type of panning effects. The system is an EV ELX with a horn for highs, a 12” for under 5k and 18” for the sub. The system has its own amps and crossovers. I selected after rejecting systems from JBL, QSC and some other lesser known brands. Yes this is a music studio and not a living room setup.

[@Swampnutz10303]

Before I even get 10 seconds into the video, YES YOU DO!

[@danlivni2097]

I heard the Rockport Altair speakers 10 years ago and they were amazing sounding. The Rockport Carbon Fiber Woofer and Carbon Fiber midbases on the Altairs sounded so articulate. The Altairs i heard used a Scanspeak tweeter that sounded smooth. I love the red color on the Rockport Cygnus speakers.

[@iluxman]

Absolutely agree with you : Stereo-Subwoofers are even better. I'm very happy with my current set up: Maggies 3.7 and Duo JAl Subs! Thanks very much for sharing you experience.

[@colossusrageblack]

I use stereo subwoofers, will never go below 2 again. The bass really fills the room compared to one.

[@docrack7048]

What's your set up please?

[@starmc26]

I like twin powered subs... I keep one punchy, and the other a little boomy... It's amazing.

[@briancampbell6898]

I am a big fan of distributed bass, I run 2 12" servo subs in stereo and 3 hidden in room mono..The three mono subs are 10", 12", and 15" all set to their sweet spot via crossover and gains.. Makes for a very clean bass presence, I can turn the knob to any volume level without having to adjust the subs because they are not working hard to give me my bass.. Sounds real clean with any style of music.

[@bagoodperson]

Brian Campbell would you recommend A 2 or 3 different size sub setup for car audio in a SUV and if so how would you set up the crossovers??

[@6spdkeg]

What subs do you have playing via Stereo? What sort of frequency cut-offs run on them?

[@frankbekker9]

For a single subwoofer setup,j ust make sure the crossover frequency is low enough (mine is at 80hz), take time to found the right positioning for a sub regarding your listening position. Off course you will suffer from nulls in your room, but i can live with that as long the response on my listening spot is fine

[@markt4385]

I know I'm years late on commenting on this video, but Paul nailed it with this one. A sub in general makes a great improvement in a sound system, but two is a monumental difference!

[@npthaiduong]

I really like the calm and chill intro music you have for your videos. Sub!

[@1mctous]

I don't need speakers to reproduce the lowest octave (25-50 Hz), but these frequencies add realism at a substantial purchase price. I have heard single and double subwoofer systems, and I'd have to agree with Paul: two subwoofers are much easier to blend with the satellite speakers because of midrange directionality (there is no brickwall crossover for either speaker).

[@kamilkashaf2766]

What if you use active/digital crossovers with a 48db/octave linkwitz-riley crossover?

[@dsslimone]

Hi there, I love music and while trying to do some research to facilitate fitting my own car hi fi I came across your channel. Thank you for simplifying a very deep subject. I could listen to you all day. Best regards Douglas.

[@rts100x5]

even with my single Stereo Integrity IB24 inch sub (xover is 70 @ -12db per octave) its very easy to tell that the LFE is "pressurizing" that side of the room - or loading - whatever term you want to use... When a second sub was added to the opposite side of the room - the LFE energy becomes completely balanced in the room....as is the case with most Home Theaters I have installed....

[@lovejago]

I run 2 sub's one in the front of my living room and one in the back. I love it! talking about feeling the Bass!!!

[@mohamedahmed1023]

Would really appreciate someone's advice on the following; Given my crossover is set to below 80Hz as I have satellites with 8" woofers that are flat to ~45-50Hz and localization and headroom aren't an issue, would a second sub even be warranted if the frequency response isn't that bad at the relevant listening spots? If there are no major nulls, can't I forego the second sub? In other words, wouldn't measurements and use case determine the extent to which a 2nd sub is warranted? And in some cases (though maybe unlikely), wouldn't it be unwarranted?

[@HB92647]

These are all so great. Thanks Paul.

[@crazy8sdrums]

I would have added that the size and shape of the listening space would be an important consideration. In a big, wide open room, one could probably hear the differences with 2 subs. In a small, confined area, not... Like a car, for example. You could never hear stereo differences with 2 subs r/l in a car. Even in a studio control room, in most cases, not enough width to handle the large wavelength.

[@AQAVAR]

Will the extra magnetic on woofer make it stronger, i meant higher wattage?

[@MegaF1guy]

Great video. What if i have two subs that have high level inputs and high level outputs? Could i use one sub on each main speaker using high level input and high level outputs, ie.. left speaker cable leaves amp and is connected to the left high level input on my sub and then out to the left main speaker from the left high level output of the sub and the same on the right with a second sub? Any help would be amazing Cheers

[@PetraKann]

Wavelength is inversely proportional to the frequency so low frequency sound implies a high wavelength. Wavelength = (speed of sound)/frequency. A 100 Hz low frequency sound would have a wavelength of 340/100 meters.That is 3.4 m. This wavelength is comparable to the size of a bedroom. A 20 Hz sound has a wavelength of 17 meters. This is the reason our ears cannot perceive the source and location of low frequencies. Human hearing is also most sensitive to pick up frequencies in the 2 kHz to 4 kHz range. This range also happens to be where the average human speech is located. Also leaves rustling and twigs cracking are also within this range. Humans have developed acute hearing in this range so as to detect predators and danger (obviously this was in the distant past and is also present in our human primates) (Note: A sound frequency of 3000 Hz equates to a wavelength of about 11 cm which comparable to the distance between the left and right ear. Humans can easily detect sound source and the stereo audio effect at these frequencies/wavelengths and higher.)

[@smanzoli]

Implies to a LONG wavelenght, not HIGH.

[@PetraKann]

@j s we share an ancestry with the highest primates. Thats why our genetic code is about 98.5% identical to that of the higher primates such as the gorilla, chimp and orangutan. You shouldnt feel ashamed of your cousins.

[@PetraKann]

@j s Incorrect. It depends on what genetic regions and markers you are comparing. Overall there is about an 85% similarity between mouse and human genomes. Some genes may be 99% similar, some are 50%. You can also find specific genes in bananas or bacteria that overlap with human genetic characteristics. Why would you pluck out a genetic feature that has a 99% similarity with human genetic information and make a broad statement like the one you made in your post? It's clear to me that you need to withdraw or edit your previous post and submit a formal apologise my friend.

[@PetraKann]

@j s Evolution doesnt say we come from monkeys. It's best that you dont comment on things and scientific facts that you clearly heavent read up on or dont possess a comprehension on. How old is the earth?

[@hansfijlstra5932]

@@smanzoli I have to disappoint you but you are not correct: it implies to a long wave and a high wavelength! But many make this mistake to be honest 😄

[@85percentcocoa]

Might it also be a problem of phase in 2.1 systems, between the sub and the satellites/speakers, because the sub is not placed under the speakers? Thank you for your videos.

[@johndope6183]

Excellent video.Thank you sir.

[@jeroenschuuring6060]

I'm not really on the same page about stereo subwoofers. I need to say i cross at 80Hz 18dB/oct. I do use subs on each side but hear any difference between mono or stereo. My mains are integrated from 60Hz on up. Does that make the difference?

[@tubukonxumalo8041]

Awesome Vibes Paul. Enjoying your insight all the way in ESwatini, Southern Africa. Sound spec is Bowers & Wilkins 685 S2 and an Onkyo Amp.

[@stonefree1911]

Aug 2019.....still want the hat Paul!

[@Cesarz28]

Can I use a 15 and an 18 inch? Or do they have to be the same for better performance? The 18 is on sale for what my old 15 is when I purchased it

[@brianduval1051]

Mr Paul I'm very curious to know what kind of set up you have in your vehicle

[@amwartwork]

where u position the woofer matters too. stand at the back wall and listen. then stand in front of it. i noticed this years ago when taking speakers apart

[@mariechanellemesa2379]

Good day sir Paul. from philippines.. i also a music lover. i have a question related to a poping sound randomly.. is it electrical issue or speaker problem?.. i check 3 times my speaker connector. wire is ok. thank you

[@2nd_Channel]

isn't it "only" the lowest speaker in the infinity IRS 5 that have the servo drive? or do I remember it wrong

[@edwardcornell1263]

Bass Player here - I love subwoofers. My question is about putting a subwoofer at every speaker. Making a 5.1 surround system to a 5.5 surround sound system. Even though we may not hear the direction of that frequency, wouldn't we want the shockwave? I play a lot of games and watch a lot of movies. I can feel the direction of the subwoofer. So if you picture yourself in the middle of the room, 5.1 surround sound system and someone in the game or movie kicked the door down behind you, the shockwave would come from the front, not the back. This throwing off the direction of the shockwave. Now if you upgrade to a 7.2 surround sound system and that same person kicks the door down on your left, you might feel the shockwave from the back and the front. However in real life the shockwave most likely come from side when that the door busts open.

[@steveballs8208]

Would the sub woofers have to be identical? I have one old Kef which is now obsolete, I am looking at getting a second Kef sub but would be a different model

[@jaakanshorter]

I finally bit the bullet and got two subwoofers Polk DSW PRO 550 for my Magnepan MG12s ( 2 pairs ). Basically extending the range of the front pair. You are so right about using Speaker level connections. Once I moved my system to my finished basement, much bigger room, I wanted to see how much of a difference they could make since I now have the space. Oh it's a noticable difference with music. I have yet to watch movies with the subs but will soon.

[@bigadventure3797]

For home audio 2 subs are a must. The Bass response is more "full" and immersive with 2 subs.

[@fellipeteixeira9217]

Exactly. Multiple subs reduce lags in the frequency responce curve. Just like multiple mids and highs do.

[@GoodVibesOnly1914]

If i have one preamp out on my reciever and use an rca splitter to run 2 subs is that considered stereo? Wasnt sure if in true stereo setup if both speakers get the exact same signal

[@pushkarraj6297]

In a enclosure with a subwoofer what is better to add, a mid range speaker or a full range speaker.. ? And Adding a tweeter is optional or must should be added..??? Plz help me out to build a small sound system.. With Regards..

[@lorindamikaela]

you need a tweeter with a full range driver - it just sounds better. you need a tweeter with a subwoofer, actually might be worth researching having a tweeter and a super tweeter with your subwoofer but you also need the right cross-over.

[@dhpbear2]

One CAN hear stereo from two sub-woofers. You can hear phase differences or arrival time differences!

[@picobyte]

Only while you move your head. As the soundpressure differs between your ears and the woofers.

[@JohnMorris-ge6hq]

David Perkins Good point, however; all modern (after 1972) Pop, Rock and Country music has the bass guitar and kick mixed to the center. In other words mono. And on all vinyl (except audiophile releases, direct to disk, Half Speed Masters, etc) after 1972 had the bass summed to mono before cutting. Some where summed to mono as high as 150hz. For you to hear stereo bass there has to be there in the mix. Stereo miked Classical, Jazz and Folk still had some real stereo bass in it. And cutting engineers HATE STEREO BASS.

[@TFWandyzilla]

What about using one sub in the middle? Bass in mono in recordings, right? Would it work?

[@fellipeteixeira9217]

Multiple subwoofers is more about dealing with room modes than having a stereo sound.

[@MZ-tm1tw]

In most records the bass instruments bass guitar Bassdrum (Bass keyboards )are recorded in Mono and are almost always panned C in the mix for more high output levels. If you have a big wide room and can get two subwoofers to work whit out them cancelling out each other yes two subwoofers will sound bigger move more air and have 100% stereo paning compatibility. In a small narrow room one Mono subwoofer will probably be more easy to place in optimal position levels /phase and crossover match as bass extension to the main speakers. the main speakers play full bandwidth anyway so paning below 200hz can be heard anyway in the main speakers.One exception to the rule bass instruments always recorded in Mono and panned C-centred are Symphonic music or Jazz recorded in a hall in true Stereo with X/Y Otrf Bluimline M/S Microphone setup and such recordings the bass instruments will be panned same way as they are setup in the recording room.

[@scharkalvin]

I'd say that if your satellite speakers (main speakers) have a low enough f3 so that your subwoofer is only supporting the lowest octave, then you probably only need just one. But, If your satellite speakers only go down to 80 to 100 hz, then your subwoofer is carrying the lowest 2-2.5 octaves. In this case you will get some additional stereo placement by having two. My homebrew satellite speakers have an F3 of around 60hz (according to the design equations using the drivers Theil-Small parameters and the box dimensions). So my subwoofer is really only supporting the lowest 1.5 octaves. Given the small size of my room, I think I'm doing OK with just one subwoofer. Anyway, I'd rather have just one subwoofer that had usable response down to 20hz or lower, than a pair that only got down to 30hz (as some do).

[@dlinneman29]

I have two different brand of 12 inch subwoofers that have the same rms, 4 ohm, dvc and are in separate boxes connected to a single mono amp wired to see 1 ohm. It sounds great. Is it ok to do this?

[@fellipeteixeira9217]

Its not just ok but even better to mix different subwoofer types as you reduce drops in the frequency response curve. You get the same benefit when mixing different mids and highs drivers. Its going to sound more wide and natural.

[@01sapphireGTS]

Hello Paul: I am running a music only, 2-channel HiFi system that uses a Vincent SA-31 MK preamplifier and a Vincent SP-331 power amplifier. SVS recommended the SB-1000 Pro subwoofer for my speaker & room size. Which connection method described below will give me better signal and sound quality? 1. Using the RCA connections and putting this sub between the preamp and amp (Preamp -> Sub -> Power Amp -> Speakers). 2. Using speaker cables utilizing the high-level speaker inputs and outputs on the sub (Preamp -> Power Amp -> Sub -> Speakers). I have been told to connect the sub both ways. My speakers are DCM TimeFrame TF-700 and the largest driver in them is a 6.5" which made me think I should be using a 8" or 10" sub, preferably a pair of matching subs. Thank you in advance for your recommendations.

[@MrTruth111]

Paul, will the cap make my system sound better?:)

[@dossipdan9173]

Yes, but you need to buy his recommened bi-directional cables too

[@frederickfranchi6408]

You're funny🤣🤣🤣

[@milojenikolovski7522]

I like subs to, two subwoofers in one room is good setup, in my room they are on opposite side of the room, bass is strong but not to aggressive, lot of air is moving, its nice to have 2 x sub in one room.

[@sicos90]

i got 2x 12inch and i place them left right :) because stereo :P

[@n123v]

VERY NICE REEL TO REEL RECORDER MAN!!!!!

[@aaddrryyss1803]

Love the song at the end of the video. Shazam couldn't recognize it. Could anyone point me in the right direction, please?

[@juliocesarpereira4325]

I have a very humble stereo system with built-in stereo subwoofers. It is so impressive. A friend of mine came to check my set up and he was impressed, specially with the bass sound. And I didn't even show him the audiphile cut of the album 'San Francisco' by Bobby Hutcherson with guest bassist Harold Land, who plays both acoustic and bass player on this 1971 album.

[@davido6063]

I just saw the video today it was informative. But I would like to get your input on sub and placement. I'm looking at getting a Rel T-9i subwoofer but at the moment I only need one. Later I plan to purchase another sub once I get a media room. My concern is the price! I like the bass that one Rel sub produces and I know when it comes time to purchase another one its recommend that you purchase the same type. Is there brand that you can recommend that is more cost effective with a good output like this sub? Also I plan to place my one subwoofer in the back of the room, is that ok?Thanks for your input

[@pushkarraj6297]

If I use two same size subwoofer in a enclosure. In which both subwoofer is partitioned in separate chamber inside enclosure. One chamber is completely sealed with passive bass radiator to produce low bass frequency and another subwoofer chamber is a little hole for air to produce high bass.. is it a good idea or just rubbish..?

[@lorindamikaela]

not a good idea

[@ovenheating9482]

I feel like a major factor would be room size. One small subwoofer can work perfectly in a small room. One large subwoofer can work in a medium size room and more than one large subwoofer could work in a large room.

[@audiomez]

If phase calibrated, its about spatial coverage, and projection upwards and downwards in terms of formants and secondary level harmonics

[@ProDigit80]

Isn't it better to have a mono subwoofer in a small room (say a bedroom or living room), due to stereo subwoofer frequency interference (dead spots)?

[@dynacoA25]

what if the goal is to color the sound just the way you want it ? or perhaps maybe the goal is to get the right room so you can feel like you're their like paul says , but how close ? 50 ft or 5 ft away ?

[@impulseproman]

I love this guy knowledge

[@fdschuler7863]

I can hear the direction of the bass when I turn my sub 90deg left or right.

[@Hyperbolous]

Hi Paul! I love your easy to understand science to support your ideas. I'm starting to designing a high integrity sound space, and would like your input not on dual subs per say, but the mixture of sizes. Example: I enjoy the hard hitting fast response off say a 8" sealed. But I also need the richness of a 12" ported or open baffel. I've had stereo subs in the past and lived them. But I want to get the best of both frequencies. I haven't found much on this topic in my research thus far. I wonder if I'm under powered/frequency range of my loud speakers and trying to compensate... What are your thoughts? Thank you, again for taking the time to put a quality channel out.

[@ottonormalverbrauch3794]

Diagonally placed subs may surpass stereo subwoofers in terms of quality for they cancel out some of the room nodes.

[@Farpun]

Is having a speaker level 2.2 system better than a line level 2.1 system for movies?

[@Fergutor]

My opinion while not knowing enough is, first of all, movies soundtracks are in 5.1, 7.1, Atmos, DTS-X, etc, not stereo, so, none. But if you have a system that converts properly multichannel surround sound into stereo, like Dolby virtual speaker, Creative CMSS3D/SBX, other, to "properly" listen it in stereo, and all destroy quality (and/or positioning) at least on the rear/side/up speakers, so in that sense both (2.2 speaker level-2.1 line level, that are if I'm understanding correctly both from a stereo source) will do (knowing that line level is better that speaker level). But with 2.2 speaker level (you can use a 2.2 line level too, why not) you will have the advantage of not mixing the low frequencies of all left and right channels into only 1 sub plus LFE, and mixing the content of the LFE channel on two subs making it more efficient. That's if you are starting from stereo, but then if you have a system that can use the lfe channel of for example 5.1 and throw it into a sub and then virtualize the rest of the channels into the 2 "satellites" the a sub is enough and proper.

[@danpatterson8009]

Say I set up a 30-Hz point source in a quiet field and compare live listening to a stereo reproduction. With the live source I can move about the field and the sound will remain the same. Set up two speakers to reproduce a recording and geometry says there will be nulls where the path lengths from the two speakers to me differ by half a wavelength. and I hear a noticeable drop in volume. Of course at these nulls occur at all frequencies, but at higher frequencies the nulls are too small in space to fit my entire head in, so the effect is diminished and instead I perceive imaging; the difference in phase tells my brain the sound is coming from over THERE, regardless of where the speakers are. Is it possible to "hold on" to this effect at subwoofer frequencies? Is that why so many drivers and so much power?

[@juanbaclavab]

it depends what type of music are you listening to. for classical, jazz and audiophile music you don't need a subwoofer. but for electronic, pop, rock, dance you'll need one. nost of these tracks have tricky 25 to 40 Hz stuff in them

[@Keith-ux9ku]

What is audiophile music?

[@pratikparajuli5991]

Hello audiophiles, I currently have 1 subwoofer for my theater system (Polk Audio PSW505) but I have another one that I'd like to add (SVS SB-1000). Would it be possible to combine these two for a stereo subwoofer system with my receiver (Onkyo TX-NR676)? Thanks!

[@kamilkashaf2766]

Unless they have a very similar frequency response curve and both are sealed, there can be cancellation going on at different peaks and curves along the spectrum. You could use a mic and DSP to eq both subwoofers to have a somewhat similar response, but I wouldn't recommend that unless you know exactly what you're doing. I think just stick with the SVS for now and add another down the line. I use just one sub placed between the speakers and I find it works just fine. Also I'd recomnend you to look into the Rhythmik L12 sub for that price, but you can't really go wrong with SVS either.

[@theejoeylee]

It would be my honor to hear the IRS

[@adammusic1124]

How do you connect 2 subwoofers to an integrated amplifer when a good deal of audiophile integrated amps only have one sub out? Are there specific audiophile integrated amps that offer 2 sub outs?

[@octaverecordsanddsdstudios1285]

The best way is using a subwoofer with a high level input (speaker level). Then, you tie a parallel speaker cable to the back of each speaker to feed the subwoofer's input. This has two advantages: solves the problem you brought up and preserving the sound characteristic of your amplifer.

[@paulwibb.8944]

Just a quick question,, how many "Stereo amplifiers" of any price or quality has anyone ever seen sporting a subwoofer terminal.

[@DaniMusicSk8]

there are crossover amps/crossovers used alot in live sound reinforcement and fron there you create your crossover points adding more amps designated friquency splits into setup.

[@ricochofsky8293]

A bullshit question; "Stereo amplifiers" denotes only two channels of amplification. I have an old surround receiver (Not 5.1; but L, C, R, RL, RR) with a line out for a mono sub amp.

[@Hal9000Comp]

Absolutely agree. The question is though, with the amount of money you invest in good stereo subwoofers is that money better spend on a upgraded pair of main speakers ? Not to mention that better main speakers are more closely tuned to blend with the rest of the speaker. You also dont have the challenge of proper placement and calibration of the subwoofers.

[@Sunil_Dhaka]

Is it better to have two active subwoofers from different brands with different characteristics in a setup or should both be identical?

[@supralevamentum223]

two kind works also, depends on the kinds but they can be better than one sub for sure!

[@6spdkeg]

I've heard that if you go with different brands and what not, you need to stick with either two ported subs or two sealed subs and not mix them as they will be hard to tune them in with the system. I have no idea about the science behind this. Just that it made sense when I heard it. I think it was something to do with timing of the sound waves. you get the wave from the woofer front and then from the back which takes time to travel through the port. Different designs, different timing but for some reason it's easier to tune with different port designs. There will be more audible difference coming from a sealed sub in one area of the room than a ported in other part of the room. Best bet is same sizes and placement for room correction.

[@brianduval1051]

I would love a hat. Mr Paul you should get some hard hat stickers too lol thanks for taking your time and explaining

[@emptywis3797]

I agree with you, I have the b&w dm620i and they sound great with music not so with movies. Know I have a sub to my system and movies sounds great!

[@DylansDIYWorkshop]

what about surround subwoofers?

[@bonzainews]

I built a pair of subwoofer Cabinets each housing (2) 15" MTX Subwoofers for my theater room... Each pair L and R are in a 8 cubic foot vented enclosure tuned to 32 Hz... I get extention down to 20 hz @ -3db from its 38 hz peak in room. These play very flat from 20 - 70 hz at the +/- 3 db range... I agree Stereo Subwoofers Kick A$$!

[@stephenmcbride6359]

When adding subs, I like to think of it like you are turning a 2 way system into a 3 way system. You consider your mid/bass drivers to be your mid range and the subwoofer becomes your bass driver. For this reason you need 2. Bass as well as everything else is played in stereo.

[@marcusaurelius2988]

Why?

[@cortessarge5399]

Sir can i use speaker our of my power amp. im using as my audio signal source of my active subwoofer?

[@AmitAnand3376]

I am using the speaker out from my integrated amp to power my sub. Go for it.

[@cortessarge5399]

@@AmitAnand3376 thank you sir

[@AmitAnand3376]

Here's something you may want to look at kzbin.info/www/bejne/a3LSmoaVmp2qeKM

[@crventura]

Hi Paul, Could´t agree with you more !! One sub at the front center or a couple separated on each side of the room. I noticed by experience that two subs by pressurizing the room evenly, they can improve dynamics on frequencies they were not suppose to reach. One other thing I've discover along the time with my experiences is ... Subwoofers are sensitive to toe-in like regular speakers, you try that, and comeback to me, see how the soundstage focus and becomes bigger and richer. For those giving the first steps on Subs, they can be a very frustrating experience at the beginning but, here are two golden rules for starters; a) Sub alignment between two subs MUST be made by the micron, meaning the distances between back and side walls MUST be exactly the same on the two boxes, and I mean not by the millimeter, its by the micron !! b) If you spent a lot of money (like I did), on very expensive subs that have variable phase alignment (very handy), so that you don't have to move the subs micron by micron on your room ... Forget about it, leave the potentiometer at 0 and do the positioning / alignment by hand, will take a bit longer but you only have this trouble once, believe me. In my case, I started using the pot and after a few auditions the sub vibration was enough to desalign the setup. ;) Cheers !!

[@mirod5222]

Two subs interfere.

[@starmc26]

@@mirod5222 When they have phase selection, they can be set so they do not; they actually work together.

[@ProGamer-nx1tv]

Thanks loved your videos. Also many songs have lower frequencies driven as mono. But in case of movies yes offcourse stereo subs will give great experience. So X.2 stereo subs is always better than X.1

[@imnoone3916]

Thanks for the input. My question is, do the subs have to match? I like my current sub and would like to add another.

[@nachowifi2181]

From what I heard, its strongly recommended. You want both Subs to be able to it the same low frequencies and you want the same output levels. Im sure you can get away with a different Sub, but you'll have to tweak the to come close in values. OR, you can sell your current one and get new subs. Haha. This hobby of ours. Good Luck my friend. Hope this helps!

[@imnoone3916]

Thank you for replying. I knew that was going to be the answer I just wanted a professional second opinion.

[@fellipeteixeira9217]

Unless we're talking about SPL, the subs does not need to match, as mixing different types you reduce drops in the frequency responce curve. Mixing different types of drivers is going to make it sound more wide and natural. You get the same benefit with mids and highs.

[@jeffcull3249]

I have read that two subs is more for dealing with room modes than having "stereo" sound. Maybe that is more from a home theater point of view (using LFE)? Great video as always!

[@kamilkashaf2766]

One sub between the speaker works just fine in my experience.

[@gerritgovaerts8443]

That is correct. Most (99.9%) of stereo recordings are in mono below 100 Hz , so no stereo info in that subwoofer region . Even if there was , your listening room (and the separation between your speakers) is too small compared to the wavelenghts to hear it

[@grantinnes8269]

Lots to consider size of room,shape,and what you room is made of as in ,stud walls ,brick,concrete. And the place ment of them.and then setting them up correctly. And if your more into films or music... I've got lead shot that come with my speakers and don't no if to fill them up there floor standing speakers any one have any advice.

[@simonecionco1565]

Ho delle proac studio 140 amplificatore mcintosh ma6300 e ascolto rock in vinile con un technics sl1200 mk2, un subwoofer migliorerà l' ascolto?

[@SimplyGetPaid]

WOW, SOUND SYSTEM TALK ALWAYS REMINDS ME OF THE GOOD ‘OL DAYS BACK IN THE 90’s WHEN I HAD TWO (SEALED)12’s IN THE TRUNK OF MY 87 T-BIRD !!! I USED TO SPEND HOURS OVER MANY WEEKS, and MONTHS MAKING SMALL TWEEKS TO THE VARIOUS ADJUSTMENTS... ...I REMEMBER FINDING THAT WITH STEREO SUBS IT WAS MUCH EASIER TO ACHIEVE A CONSISTENT LEVEL OF BASS ACROSS DIFFERENT TRACKS OF MUSIC (WITH VARYING QUALITIES OF SOUND ENGINEERING) ALLOWING ME TO FIND JUST ONE FLAT SOUND SETTING THAT WAS AWESOME FOR EVERYTHING WITHOUT HAVING TO CONSTANTLY RE-ADJUST SETTINGS AT THE HEAD UNIT.. ANOTHER ADVANTAGE I REMEMBER WAS THAT THE SOUND TEXTURE AND DETAILS OF THE BASS WERE MUCH RICHER AND DYNAMIC WITH THE TWO SUBS... THE INCREASE IN QUALITY OF THE SOUND SIGNATURES BETWEEN THE LOW STRINGS VS LOW SYNTHESIZERS VS PERCUSSION WAS SOMETHING ONLY TRUE AUDIOPHILES COULD APPRECIATE...

[@danielramirez837]

Woww, pretty awesome channel ! I'm new to this channel and I will say I love what u do and enjoy ur videos and always enjoy learning something new . Iam a audiophileat heart and I enjoy clean, precise and loud music . On, that note I would love one of your audiophile hats. Thank u .

[@RoraighPrice]

do you have to worry about sound waves cancelling each other out if you have two?

[@ToadStool942]

Good video as usual, Paul. I've a question. I've a 15" subwoofer that has taken me forever (think years) to properly dial in and am extremely pleased with its performance. Finally. That said, I've just ordered a 2nd identical subwoofer to place in the exact opposite side of the room. Why? Not necessarily because I think anything's lacking but rather to ensure little / nothing is lacking as I've read too many times others say that a 2nd sub is always more beneficial. Of course, most everybody has their own magic potion (or lack thereof) toward dailing in subwoofers. I have a few concerns because dialing in 1 subwoofer can be quite taxing but 2 or more subs could be rather daunting. That said, my intention is to position the 2nd sub in the symmetrical room in the identical opposite location of the first sub. I also intend to start with all subwoofer settings on the 2nd sub to be identical to those that work so well on the 1st sub. Moreover, each sub will have its own 20 amp dedicated AC line/circuit, using identical cables, and each will be identically anchored to the sub-flooring. At least to the best of my ability. What could possibly go wrong? :) Since lower frequencies are not so directional, would it be more beneficial to connect L&R channels to each subwoofer? Or should each subwoofer just have one channel connected? My initial thought was one channel per sub but if there's minor room modes due to either subwoofer, wouldn't a L+R connection at each sub help minimize / eliminate any postential room modes? I'm sure I'll end up trying both ways, but good advice just might save me from wasting time potentially barking up the wrong tree for too long a period of time. Thanks.

[@Paulmcgowanpsaudio]

Thanks. Definitely, connect left to the one and right to the other. While I know it's tempting to use mono for both there's always an added imaging aspect we "feel" when left and right are separated.

[@ToadStool942]

@@Paulmcgowanpsaudio Good point and thanks again.

[@ricetogo]

Hi Paul, I have a very old subwoofer, maybe considered a vintage. It is a monitor audio asw 210. I think the power transformer gave out but the drivers are still good. Is it possible to replace the amp plate with something new (today’s technology) that would make the sub works better? There are options for me to buy many subs now to replace the one I love, but I just don’t trust the quality when it is mass produced in China. Do you have any good advice?

[@octaverecordsanddsdstudios1285]

Sure. If the driver's still good you can purchase an off-the-shelf plate amp from Parts Express. Just make sure the plate fits because you don't want any air leaks.

[@ricetogo]

@@octaverecordsanddsdstudios1285 my sub is a dual driver speakers, would a single driver amp work also? For example, Mine is an monitor audio asw 210 and the only amp I found that would fit is a asw 100 which is a single driver. If you know of any modern day amp that would fit for my speaker model, I would very much appreciate your reference.