Is a Deep Speaker Box Better? Tested with Surprising Results

John Heisz - Speakers and Audio Projects

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The traditional wisdom says that if the driver is close to the back panel of the speaker box, you'll get very obvious reflections back through the cone that colour the sound. While this is now widely accepted as true, I thought it would be interesting to actually test it and see first-hand how much of an impact it has.
The two boxes are nearly identical internal volume of 12 liters (the deep box is very slightly bigger). That volume works best for the driver I'm using for the test, a Seas coax H1144.
The deep box is 8" from the back of the front baffle to the inside face of the back of the box, while the shallow box is 4" deep. I used the same driver (I only have one of these), crossover and test setup for each box. The shallow box is just deep enough for the driver to fit - the back is just 1/4" from the back panel.
Measured first without stuffing, the tall shallow box shows a disturbance in the 300Hz range. This can be the "back through the driver" reflection mentioned above or it can be a standing wave.
Adding stuffing (I used the same piece of rockwool in each box) shows no significant change for the deep box, but has smoothed out that 300Hz wiggle in the shallow box, proving that it is a standing wave problem.
The standing wave happens up in the shallow box because it is taller and the distance from top to bottom is great enough to support a standing wave in that 300Hz region. The rockwool is damping material that absorbs sound energy, breaking up that standing wave.
Tangentially, this also demonstrates that standing waves are only a problem when the box is big enough inside to support a standing wave in the lower midrange frequencies. Note that the deep box shows no improvement when stuffed, indicating that there are no standing waves of any significance to damp.
So making a small speaker box with rounded or angled sides won't be effective for preventing standing waves, when they wouldn't be there to begin with.
Finally a listening test using both boxes. The mic is set up around 20" from the speaker on tweeter axis for both boxes in my listening room.
I deliberately withheld which box is which, leaving you to decide based on listening only. Give it a try and leave a comment, and I'll reveal the results in a future video.
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Опубликовано:

13 май 2023

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Комментарии : 388

@IBuildIt Год назад

The traditional wisdom says that if the driver is close to the back panel of the speaker box, you'll get very obvious reflections back through the cone that colour the sound. While this is now widely accepted as true, I thought it would be interesting to actually test it and see first-hand how much of an impact it has. The two boxes are nearly identical internal volume of 12 liters (the deep box is very slightly bigger). That volume works best for the driver I'm using for the test, a Seas coax H1144. The deep box is 8" from the back of the front baffle to the inside face of the back of the box, while the shallow box is 4" deep. I used the same driver (I only have one of these), crossover and test setup for each box. The shallow box is just deep enough for the driver to fit - the back is just 1/4" from the back panel. Measured first without stuffing, the tall shallow box shows a disturbance in the 300Hz range. This can be the "back through the driver" reflection mentioned above or it can be a standing wave. Adding stuffing (I used the same piece of rockwool in each box) shows no significant change for the deep box, but has smoothed out that 300Hz wiggle in the shallow box, proving that it is a standing wave problem. The standing wave happens up in the shallow box because it is taller and the distance from top to bottom is great enough to support a standing wave in that 300Hz region. The rockwool is damping material that absorbs sound energy, breaking up that standing wave. Tangentially, this also demonstrates that standing waves are only a problem when the box is big enough inside to support a standing wave in the lower midrange frequencies. Note that the deep box shows no improvement when stuffed, indicating that there are no standing waves of any significance to damp. So making a small speaker box with rounded or angled sides won't be effective for preventing standing waves, when they wouldn't be there to begin with. Finally a listening test using both boxes. The mic is set up around 20" from the speaker on tweeter axis for both boxes in my listening room. I deliberately withheld which box is which, leaving you to decide based on listening only. Give it a try and leave a comment, and I'll reveal the results in a future video.

@doctorscoot Год назад

I could hear no real difference

@act.13.41 Год назад

@@doctorscoot Same here, but I am old.

@dcuccia Год назад

New to HiFi, but have a physics & engineering background: Is the standing wave precisely the same as what others call edge diffraction or baffle step? Does the RockWool essentially dephase the initially-coherent standing waves? How far can we push this? Can we stop worrying about long and narrow subs and engineer in-wall pancake enclosures?

@act.13.41 Год назад

@@dcuccia I'm not an engineer, but I do know that Monoprice has a selection of in wall speakers. You could probably get some measurements from their site.

@pablohrrg8677 Год назад

@@dcuccia I imagine the box as a pool with water: you can make waves in a pool; depending on the size of the pool and the frequency of the waves you can make them standing wich amplifies the peaks. Of course in audio the variability of the frequencies make it hard to desingn a speaker that doesn't resonate at afrequency but end up resonating at a different one. Sound systems have so many variables playing that are almost chaotic systems Think about butterfly effect.

@davebullard Год назад

I love that I couldn't hear a difference. This is a great channel btw. Thank you

@Den-r 3 месяца назад

Use your ears idiot

@chrish7927 10 месяцев назад

I'm so jealous of that workshop

@guillaumeleclerc3346 10 месяцев назад

I think for those kind of tests it might be fun to have A, B, C and D, two of them being identical just to triple check people can *actually* hear a difference (let alone which is superior)

@pointnemo369 Год назад

My "Guess" speaker B is the shallower box.

@drewthompson7457 Год назад

I'm listening on my tablet, but I agree with you.

@pcno2832 4 месяца назад

My first though was "A is the deep one.", so it seems we agree. B sounded "boxier" to my ears, like those cheap speakers they used to put on Lloyed's all-in-one compact stereos of the 1970s.

@Freekniggers 3 месяца назад

My guess is both at different frequencies and

@SoldierJ613 3 месяца назад

Which is it ? What a waste of 6 mins of my time. Thanks buddy🤦‍♂️

@pointnemo369 3 месяца назад

@@SoldierJ613 To my knowledge John has not followed up on this video. He is the only one that and tell us as he asked us to guess. If he did follow up in another video it has been months if he posted it in this comment section please let me know.

@Dia1Up 8 месяцев назад

Man, short and absolutely straight to the point

@user-zw1fz2pz2i 3 месяца назад

Seriously I could enjoy just watch you build boxes all day :) You are like the Bob Ross of speaker cabinet building.

@gordiefrench5342 10 месяцев назад

Sound fantastic I can't tell

@RambozoClown Год назад

I did the same thing many years ago with a guitar speaker cabinet using a single 15" musical instrument speaker. I was looking to fit a space at a local venue. The only thing I noticed was off axis performance was noticeably different. To use an analogy, the shallow cabinet was like a floodlight while the deep cabinet was more like a spot light. This was observed at the other side of a large room.

@superjervis 5 месяцев назад

good info

@RootAwakening Год назад

I built a set of speakers a few years back that have very shallow boxes, and have a passive radiator as well. I've been really enjoying them but now I want to get out the measurement mic and see how even the response really is! I was going to do that after designing and building crossovers but they sounded really flat to my ears and I called that good enough at the time. Really enjoying these simple tests of commonly held beliefs, and very cool to see how much of a difference stuffing made (looks like I have a place for the leftover rockwool from renovations)

@lyntedrockley7295 7 месяцев назад

just put white noise through them one at a time. You'll soon hear the difference.

@missingremote4388 7 месяцев назад

I'm confused; putting stuffing in a closed back speaker won't hurt the sound. but does it help it? Let's say a 20" X 20" single speaker (12) cabinet. This thing is for my bass guitar, or subwoofer

@sidesup8286 Год назад

I once built speaker cabinets that were several feet deep in the back. A 5 and a half inch driver needed no sub. More cabinet volume does result in deeper bass. What is more important than what cabinet it is, is that if the cabinet edges, especially the ones near the tweeter, be rounded. You don't see really serious speakers anymore being made without that rounding off of the corners. Many noted speaker designer say how adversely it affects the sound if they're not.

@gzubeck3 Год назад

Rounded or 45 degree router cut. Both will yield similar results especially as the volume goes up!

@scorpion-hifi125 10 месяцев назад

Well, for me is A shallow and B deep. A has more high-frequencies and distortion it seems to me. B has a more reaxed sound. So you can caculate the distance behind the speaker by formulas from Bailey and Rogers they used in their TLs since the sixties.

@MauriceHo 3 месяца назад

I can hear the same differences even with my android phone. I agree with your conclusion and I love the deeper box sounds.

@not12listen 2 месяца назад

My ears mimicked your guess as well.

@simonarnback6547 Год назад

Guessing B is the tall one, and A is the deep one!

@not12listen 2 месяца назад

This is incredibly interesting and had fun just watching you build the box, but got the added bonus of trying to hear the difference between the 2 speaker boxes. If I had to guess, it would be that B is the shorter/deeper box. When I get home, I'll give another listen as my speakers are home are much better than the ones I'm using currently.

@JaniLahtinen Год назад

Interesting. Thanks for this. I have a personal interest in this because I have been thinking about subwoofer build in my (too) small home theater. And the reason for shallow box is obvious: there is no room for large boxes. Tried to search something on the topic but pretty soon found out that no one is builind shallow woofer boxes. Thought there would be some reason for it. So this got me thinking, if reflection is the problem, I guess it would be easy enough to put a angled wall behind the speaker element to reflect the waves up.

@sudd3660 Год назад

hello i am no one, i built a shallow subwoofer box. 6" deep for a 10" shallow mount subwoofer driver. i got great results, below 200hz its fine. i also ran it up to 2000hz a little while, i liked that also but i would not recommend that.

@Renrondog Год назад

@JaniLahtinen Shallow subwoofer boxes are fine. Use some absorption on the back wall to help diminish reflections. The wider the baffle the better. As long as you have enough room behind the driver motor's rear vent (hole in the magnet structure) you won't have any problems. Roughly 2"to the absorpbtion material is a decent guess The length of the sound waves from a subwoofer are so long that reflections thru the cone aren't really a problem with smearing the sound. That happens in the upper octaves.

@Abominable_Intelligences 3 месяца назад

Love hearing them Nail Gun barrages, very very informative vid!

@virgogreg 7 месяцев назад

Thank you for testing the theory

@cb2000a 11 месяцев назад

Generally speaking the deeper speakers are better (to a point). Most important is that the cabinets are dense enough to not vibrate. I have built my share of speakers over the years. The speakers I have right now cost very little to make and the sound stage is incredible. It's fascinating that so many are into horn type speakers now (had some a few decades ago and would not have them now). A good system will sound good no matter what the sound level is. It's interesting how audio (as other things) seems to have gone full circle. Who would have thought that records would make a come back (still have some Sheffield Lab albums in storage).

@albertofernandes9027 4 месяца назад

I listened using regular headphone and I didn't hear any difference at all. But I do believe there must be differences!! Good test. Thank you for the opportunity !! Alberto

@Mart77 3 месяца назад

Box A sounds a tiny bit more open and wider

@Justwantahover 3 месяца назад

The bass wasn't as sharp on A. The voice sounded a little bit colder on B but sounded better with a bit more detail in the high med in the voice sound. Everything was a little bit more muddled together on A and on B everything sounded more separate (especially the voice sound). I heard it on my made 5" open FR driver plus 6" boxed woofer speakers.

@blech71 10 месяцев назад

What will really blow ur mind is positioning the driver a 3rd into the length of the long box and how it can null out nodes and such.

@nathandaniels4823 Год назад

Like a few others said, I think “A” is the shorter, deeper box. Looking at the frequency response, it had slightly more output in a lot of the low end range, and I could hear that the kicks sounded more meaty on speaker A. So that’s my guess. Either way, I thought both sounded good and there really wasn’t a significant difference to my ears, on my equipment, on this content.

@kirknelson156 6 месяцев назад

both sound good and to me the same, I couldn't tell the difference at all, in fact your transitions were so good if not looking at the screen I wouldn't know that it happened.

@richarddube3647 6 месяцев назад

Same with me, I think that there was simply no switching at all.

@Audio_Simon Год назад

Good work man!! To make it a more fair test it would be cool if you could strap a 'fake' baffle extender on thr shorter deep cabinet. The baffle itself will affect the LF range

@tonybuccolo8555 8 месяцев назад

Agree! I was thinking the same thing. The shape ans size of the front baffle can have a very large effect, all other things being equal

@gunterhackstock4480 3 месяца назад

For sure. Can please you argue in short how the longer or greater size baffle will affect the sound?!

@15secofFame 10 месяцев назад

I noticed a difference in bottom end one had a slight loss to the bottom end which screems the shorter but longer box. Now if you glued small 45 degree angles on the back of the thiner box behind the speaker wouldn't that help from reflections?

@bjtaudio 7 месяцев назад

The trouble is thou because the baffle is different, the baffle step has changed, and that will overshadow the reflection u hear, plus by adding extra damping to the back reduce the reflection in a shallow box anyway. I think the shallow box may sound a bit better in this test as the baffle is longer, hence more sound directed towards the mic at front at lower frequencies.

@EricBrettJones 11 дней назад

Shakespeare has chimed in?

@scottlowell493 9 месяцев назад

Infinity reference and kappa were very good and used shallow boxes.

@CVLova Год назад

A = Deep/short box B = Shallow My guess

@impuls60 Год назад

B has less harsness in the sibiliance range and the brass sounds better. Which box it is will be interesting to see.

@SomeGuyNamedPaul49 5 месяцев назад

I built some subs in boxes that were very tall but very shallow to get within the depth of LCR. The ports are so far away from the drivers that it's like spreading subs around the wall to excite different nodes instead of crowding them all in a similar location. I initially wasn't going to bother with stuffing until I calculated that a quarter wave within the low pass tail off range could stand up within the box. Alright fine, have some denim fluff.

@glenncurry3041 3 месяца назад

When I started in Audio retail some 50 years ago I was selling the Rectilinear III speaker. They then introduced the "Low Boy" version of it. As I understood it, same drivers and cubic cabinet space. Just different cabinet dimensions. While they shared the same general characteristics, they did sounded noticeably different. I preferred the original Tall Boy. But that could have been familiarity.

@zodak9999b Год назад

The two sound very close to each other in my headphones, but A has a little better sounding bass, and I would guess that it's the deep box.

@peterbaugh51 Год назад

A is my guess also, deeper box. Cheat: how many good speakers have shallow boxes?

@gzubeck3 Год назад

I think this is a good starting point but it's what you do with the back wave from the back of the speaker that counts. I found that with quality acoustic foam on the side walls combined with real wool yields very good results for deep clean base.

@VicariousAdventurer 3 месяца назад

Equipment lust! I feel it!

@JimDockrellWatertone Год назад

Interesting. This reminded me of something I came across 40ish years ago. It was stating a certain size speaker needs a certain volume of box and then the dimensions ought to be 0.6 units deep, 1 unit wide, and 1.6 units tall, then acoustic insulation on the back, one side and bottom. Now, this was 40ish years ago and I am relying on a memory that can't recall names and birthdays, so take it at that. I may be totally out to lunch...lol.

@IBuildIt Год назад

The golden ratio is supposed to reduce standing waves in the box, but that's something else I'd have to try before I add it to my list of hard and fast rules.

@FOH3663 Год назад

Dipole is the golden ratio!

@disklamer 7 месяцев назад

I am pretty sure that the idea is/was to limit standing waves to one dimension and thereby reducing resonance peaks etc. by using these recurring fractional ratios or derived dimensions. (0.618...1...1.618 is the mathematical sequence). In this context people also considered the cabinet resonance to correspond to a musical frequency to hopefully potentially enhance harmonics - or not. It seems lot of it had to do with driver response. IIRC by contrast the pythagorean ratios (3...4...5) are susceptible to standing waves and harmonic resonances. The basic idea is to avoid the ratios of scale harmonics, ie avoiding dimensions that correspond to the proportional wavelengths. Some cabinet ratios produce crazy wolf tones or other anomalies for no apparent reason, which adds to the fun.

@jpz1970 Год назад

Listening to this on my headphones I thought that A had a slightly fuller bass. I guess that A is the deep box but it is almost impossible to hear a difference.

@Justwantahover 3 месяца назад

A has fuller bass but B has more detailed bass with a sharper attack.

@Clint3571 3 месяца назад

A longer dimension also means that you may have to deal with standing waves and use stuffing regardless.

@MrJoshua146 11 месяцев назад

A more wider.. Just a bit tiny diff.. But still A for me... Nice information I got from u.. Thanks for sharing.. Love from malaysia

@swishpan 5 месяцев назад

Seas of Norway! Didn’t know they still operate. Pretty close from where I work.

@bjtaudio 7 месяцев назад

The only way of isolating this test is to make a large box with same identical outside dimensions and baffle, but have sliding internal panels that change the depth but keep the same volume of chamber inside to see if you can hear the difference, consider looking at stored energy response and try the adding damping to back to see if you can get both deep and shallow to perform the same. Make sure the panels are solid with bracing, as any vibration of the box walls will overshadow the tests. This is actually very very hard to do.

@Gretschbeach 3 месяца назад

Amy Lynn & the Honey Men. Good choice for test music!

@keantoken6433 5 месяцев назад

At the beginning B sounded quieter, but it could just be the section of music that was played on it. In the graphs the deep box was slightly lower in the midbass, so maybe that was B. Although 650-750Hz is higher on the shallow box, and that may be where the singer's voice is. They're so close, it would take a lot more listening to know if there was a significant difference and whether one was better. From what I read, the outside of the box can be seen as a waveguide and deeper boxes show better directivity in the midbass. Shallow boxes have a more abrupt transition from 1/2 space to full space.

@garygranato9164 4 месяца назад

great video , i've wondered about this for a while. why did you put the crossover inside the box ?? would be better out side

@MrNewcarscott 3 месяца назад

you are the king .

@williamdavison 3 месяца назад

I have heard a lot of speaker box design best practices and all of them are for a ported or vented design... when looking at sealed, 'same volume' designs the speaker should have the same results. Knowing you don't want to go thin on the material, brace or frame areas that might flex with large low frequencies... but for the most discerning ears it will be the same. Great channel by the way!

@Sheevlord Год назад

Trying to determine which speaker sounds better by the sound that was crunched up by YT compression and then reproduced by my somewhat questionable audio setup is not an easy task. To me they sounded almost the same. BTW what would be the perfect speaker box shape? Spherical? I understand why it's not common - manufacturing becomes way more difficult. I heard that some speakers are designed to avoid 90 degree angles (by making side panels trapezoidal instead of rectangular) - supposedly this reduces standing waves. Would be interesting to see a comparison.

@ItVex 9 месяцев назад

Yes in physical theory spherical would be the best shape for the inside of the box.

@JustInvertedFpv 4 месяца назад

Does not appear it was revealed in a future video, or we are not yet far enough into the future. My guess was A was the deeper box. Which one was it?

@RoadTo19 Год назад

Is the voice coil vented on the back of the speaker magnet? If so, allowing only a 1/4" space would also be a factor.

@zefrog7482 11 месяцев назад

B seemed to have a clearer top end, odd though considering the measurements weren't altered up that end. Unless, efficiency is maybe slightly increased in whichever box that was, presumably the shallow box as possibly had an effect on the loading maybe...🤔

@chrishumphries1043 9 месяцев назад

I think A is the deep box and B is the tall shallow box, as most others also think. This lines up with the graphs , with the deep box having more low frequency output and the tall shallow box stronger in the mid range. I think the 2 different boxes together would sound good but most people wouldn't like the look of this.

@tallnrough68 5 месяцев назад

What happens if you put the stuffing directly behind the speaker ? It looks like you put it up in the topside of the box ? Would be cool to see how much of a difference more or less stuff makes

@EdwardKilner 10 месяцев назад

I’m 79, wear in-ear (larger) hearing aids. I closed my eyes listening to your test. I could not hear a transition, and indeed saw A and B items. I would like to hear TV and Movies / Netflix as well as might be possible, and suspect I need not get audiophile quality speakers. I live near Toronto. Can you provide a recommendation? Pretty sure I’m not alone in this quest. Recent Sony receiver plus PSB speakers from about 1990 .

@RennieAsh 10 месяцев назад

Something to consider is that the crossover for the shallow box is mounted right next to the driver, possibly interfering with the air space at that end

@lohikarhu734 Год назад

I noticed that you have one of the cool "remote arbor tightener" tools...

@lohikarhu734 10 месяцев назад

I figured that a slower sweep of the audio might allow more "settling" time for standing waves to really get going .. Thx...🇨🇦in🇩🇪

@robertdewar1752 5 месяцев назад

Just a quick question re cabinet design, if i may. After watching a few videos, i notice the drivers are always recessed. I understand this may be for aesthetic reasons, however would the full thickness of the cabinet not be better right where the driver is supported?

@graham8316 Год назад

I like A more, but I'm hoping it's the shallow box. When will you release the results?

@jfs70ss 3 месяца назад

Nine months later I guess we'll never know. Does this guy respond to questions??? 3/10/24

@dtwistrewind7361 10 месяцев назад

Standing wave reverberation can be reduced in a shallow box by using random size foam diffusers on the back panel.

@disklamer 7 месяцев назад

diffusers are the answer to many problems

@NackDSP 2 месяца назад

I have found that the optimal rectangular box shape is a half cube with the driver centered on the square face. Why? My goal was to have all the reflections travel the same distance so the lowest box mode frequency would be as high as possible. Damping material is more effective at higher frequencies, so this mode is easily damped by filling the box with rock wool or fiberglass producing a resonance free result. Selecting drivers that need the smallest volume helps push this frequency higher, which is great. With this construction it is possible to low pass filter the woofer at or below the lowest cabinet resonance and have zero audible box sound. The free Hornresp software will model box internal resonances so you can try this concept before building anything. To extend the bass use woofers with sufficient displacement and equalize the system with a Linkwitz transform ( asymmetric second order shelf filter). Nice video, but without more stuffing I fear the listening result is not conclusive. The lowest mode of that long cabinet will likely color the sound even with lots of stuffing. It would be audible with a slow sine sweep or some vocal in that frequency range.

@doctersound9630 8 месяцев назад

B all day long. Don't care which is which. I prefer B (I think B is the deeper box b/c the low bass extension) Side note the highs in this song were very harsh and distracting.

@thingone62 6 месяцев назад

I am very jealous of your shop too. Love your videos! Would you make some baffles for someone (me)? I would pay for wood and time and wear and tear etc

@alessandrosuppini943 Год назад

Speaker A has a more open and rich sound which make me guess it is the deep cabinet but I might be wrong hence the “surprising results” John mentioned in the video

@dpdp006 5 месяцев назад

Did we get which one is A/B ?

@wattspeakers Год назад

Very good video John, and interesting results. Taking it any further would make a good follow-up and perhaps a "mythbuster". Having a personal attraction to the vintage mass market speakers, which also have the "shoebox" style shape because that was a common design philosophy in that era, it's a relief to know that my builds are likely not impaired all that much, despite their shape. It seems to me that a few decades ago, I recall the purposeful practice of not making speaker enclosures too deep. I can't recall the "why", (likely in books that I've stuffed away in moving boxes somewhere). It seems like it had something to do with a theory that in a speaker cabinet that's overly deep could actually defeat bass response due to internal cancellations or some such thing. The one thing I know for sure, is that nearly ALL cabinets for a very long time had variations on the golden ratio and shoebox shape cabinets. Even high end brands employed this philosophy, albeit a bit more proportional looking than department store speakers. This was very cool experimentation. I think the only way to take it further would be to do varying amounts of dampening, ported vs sealed, and Woofer placement on the baffle. I listened to the A/B tests and the music sounded almost identical. If I had to guess, I'd say the shallow box was "A", but only from watching the sound level meter, and assuming the SPL of the deeper box was spiking due to lack of woofer control in areas, but by the end of the listening both showed some spikes so maybe it was the song or the timing of the song as it played on each speaker. Either way though, cool experiment, that one could take further, but you already proved that in that instance, with that speaker in a sealed box, there was negligible difference. It seems to me, (and my memory isn't always reliable), if I remember correctly, the deeper cabinets started trickling into the mainstream speaker designs, when the woofers started to get smaller and smaller, (in an effort to cleanup baffle diffraction). Whenever I look at my energy RC 70 towers, they always remind me of the 180 degree shift in box methodology. Great videos, keep up the good work!

@IBuildIt Год назад

I think taking it further would just muddy the water. Having it a simple "is there a significant difference" test like this should convince anyone who's open to the possibility that a shallow box doesn't have a major impact on the sound quality And that the idea that the sound bounces back through the cone MORE in a shallow box is incorrect.

@wattspeakers Год назад

@@IBuildIt Yup!

@rods6405 8 месяцев назад

I be more worried about the dip at 10K and peak at 12K but its a great test!

@cam-inf-4w5 10 месяцев назад

Wow what a great royalty free song. What is it?

@TheMaxipa 6 месяцев назад

I thought you always had standing waves and I suspect the deeper box just has them at higher frequencies and more grouped together, because the three dimensions are more similar

@Dr._Spamy 3 месяца назад

Could also be because of the different resonance of the much larger front and back panel. But also the shape/lenght of the volume matters. The box is not only more shallow but also significantly higher/longer. I think the orientation of the shape in relation to the speaker doesn't matter as much, at lower frequences ? Needs proof though by tip the box over and mounting the speaker in the head panel. ;) Thank you for this very interesting audio experiments though !

@caryrodriguez7040 Год назад

I like the sound of B. It's tighter and more focused. A is a bit.......just a bit on the boomy side.

@bradstone2603 Год назад

It took a very close comparison to find a difference but I prefer A.

@Goose_Lord Год назад

I have been curious as to why so many box designers use the conventional shape, and so few slim on-wall speakers are available. Thanks for the video!

@djfirestormx 9 месяцев назад

because it literally has no effect, most of the waves are much longer than the boxes. the only exception is perfect squares. bracing, proper stuffion (not sound absorbing rockwall) and the front baffle shape on the FRONT of the speaker not internal will have signifigant results. the internals is more about vomumetric space to match the drivers optimal displacement

@JonathanDillonfds-fx Год назад

I listened to this experiment using an open baffle pair midrange and treble combined with a sealed midbass pair with no sub. Based on the graph provided and the listening experience I had, Box A has a very slight bump in the deeper bass notes and B has more kick timbre. My interpretation is box A is the deep box and box B the shallow one from what I was able to detect through my listening source.

@chokechange Год назад

Curious about the inverted config on each?

@keithmarlowe5569 9 месяцев назад

This came right on time! A company in Florida makes custom printed acoustic fabric. My idea is build the box as shallow as possible, then wrap it in the fabric to look like artwork. Or make a cover with it. I read somewhere that 2 inches deeper than driver is the minimum.

@torsteinengevik3744 8 месяцев назад

Used a headset. And believe that B was the shallow box, because of the booming 200-300hz that overshadowed the deeper sound.

@TomCrockett-bl1gp 6 месяцев назад

Just a guess but wouldn’t the deep box be what you want in a sub and a shallow but tall for the upper range equipment?

@11164kloc 4 месяца назад

Didn't hear a single different anywhere 👍✨🙂 BUT GREAT VIDEO

@danieltambasco528 8 месяцев назад

B sounds like a more controlled sound, whereas A sounds more lively to me. I would pick A for my speaker build.

@markbrooks6979 Год назад

I don't know which one is which, but "A" has a very, very small (almost indistinguishable) bit tighter bass. But for all intents and purposes they sounded the same to me.

@poodlelord Год назад

What if you put the driver so it fires down the longer demension of the shallow box?

@BenBuss 4 месяца назад

Then it would be a very deep box…

@NoferTrunions 3 месяца назад

Did you ever plot the difference between the two freq responses?

@ElectronicInspiration 6 месяцев назад

The size of the walls of the different boxes could introduce different resonane frequencies

@Brucinator68 27 дней назад

I have two 8" subs. they're rectangular with the speakers being on the top half of the box. would'nt they be better on the bottom closer to the floor?

@pliedtka Год назад

Once properly stuffed they should sound very similar. There might be some difference in FR because of baffle shape and size, again very small.

@djfirestormx 9 месяцев назад

yes its different because of the baffle not internal volume. so many dont realize the wavelength of that region that is changing is several meters lol. there is not enough box space to have it bounce back and cancel. its literally baffle difference and stuffing placement. rockwall absorbs sound and it WILL make the base strong or weak. proper stuffing would be indistinguishable .

@poppy3879 8 месяцев назад

i heard for bass reflex subwoofers optimal depth is 60 cm because of the wave length of the bass frequencies. i wonder if that’s true

@markpenland Год назад

I prefered B for upper midrange/vocals and think it's the shallow box.

@fabbri4497 Год назад

The dimensions of the front panel can also influence the frequency response.

@IBuildIt Год назад

But it didn't, so there's that too.

@Zeinzu2 Год назад

"A" is the Shallow Box. If the Deep box has a more level response, than The shallow has less in the mids and it creates the sound of a slight "V". And that's what I think I heard in "A" (I think)

@myronhelton4441 Год назад

A is the shallow box that has lower volume that dint sound as good.

@bedlamite42 4 месяца назад

Couldn't tell a difference on my computer, finally hooked up a decent amp and speakers to it. there's a difference, but I'm not sure which is deep or tall.

@TAPAKEGABREWA Год назад

Couldn't really tell. But if I had to pick one, I choose B as the shallow box.

@SureshKumar-nk2ok 3 месяца назад

sir which type microphone used to measure the speaker parameters

@pervertt 7 месяцев назад

Listening to this video with a pair of DT770 Pros, and I'm struggling to tell this diff between the 2 speakers. This video reminds me of the pair of B&W SCM1 speakers currently sitting on my desk. They are supposed to be the equivalent of the better known B&W 805 speakers, but are flatter in shape and designed for wall mounting. Legend has it that the deeper shaped 805 has better bass response. B&W simply tells me that positioning the SCM1 closer to the wall elicits similar bass. I don't care. I simply bought the SCM1 because it sounded and looked good and were a bargain compared to the 805.

@vl292 8 месяцев назад

A is the one that measured to have a tad more low end?

@jublaim 7 месяцев назад

Interesting! I think A is deep, B shallow. Singer sounded slightly 'confined' with B; more open with A.

@martingarrish4082 Год назад

Good video, with interesting tech content. I'll be honest, I couldn't tell which box was which, although I could hear that there was cabinet noise from both. However, that shouldn't really come as a surprise because the frequency responses were similar, with no obvious resonances. I normally use the 1/4 wave depth to cancel/unload higher TL modes - maybe this is flawed? What you do find with really high performance, but not necessarily expensive, systems is that it's about keeping the various distortions below the level of the recording background signal. This is what people tend to mean when talking about "the soundstage": the newly introduced errors are small enough that you can still make out the room reflections from the recording session. It is a very tricky thing to get right, as two speaker designs might measure flat but one can produce a much better 3D image than the other. But, getting a well damped cabinet is the best way to start the journey. I ended up manufacturing my own magnet systems, and am still finding ways to reduce errors between class D amp output and full range driver. Coax is a neat solution...

@kniferideaudio5145 4 месяца назад

My guess is b is shallow. It has a slightly fuller low mid that my guess is due to the resonance of the large front face. A sounded more like a typical point source pa speaker to me. More projected mids but not as deep

@reynolds087 9 месяцев назад

I thought I may have heard slightly more compression in the low mids on B, although I was listening on my phone 😆

@scivirus3563 10 месяцев назад

A sounds like its been compressed. my guess this is the shallow box since the driver has a stiffer air suspension i think you will get a bigger difference with sub base frequencies .. this recording on the mic suggest it had little to no base .hence most frequencies would not create a standing wave in a deep box ..you will find 50 hz and lower will be far more detailed and louder in a deep box ..i made studio grade monitors that can go well below 25 hz and are very responsive .i heard no base what so ever on this mic examples the lowest was 80 hz ..that will work and any enclose size even open baffles . i suggest using sub woofers for this experiment .i find using Fs wave length of the driver and fit it or divide perfectly by 2 /4/8/ or 16 times ,you can get the depth of the deep box with the best results then adjust the other sides to fit the volume needed

@adam872 10 месяцев назад

I need to listen to this again with a better set of headphones. I suspect the ones I'm using here in the office aren't hifi enough to discern a difference.

@gsxroyce256 6 месяцев назад

In a thin long box, put a 45 degree angle plate behind the sub firing the sound into the long half so it can’t bounce right back out the face of the cone. Send it more directions so to speak.

@JamesBond-gg4wg 26 дней назад

Iam planning to build a 2 way speaker using ribbon tweeter and a 6 inch mid bass, I would love to get your assistance/advice on how to build a picture frame 🖼️ speaker