How to Seal IB / Infinite Baffle Subs in Trunk of a Car - Mounting, Sealing, Orientation

Playlist for Trunk IB subwoofer installation:
• IB trunk wall in Merce...
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[@lucaslong5368]

This video was awesome👍 Pro tips coming from you is a real treat! I wish wish I would have found your channel before I purchased my W6's. IB is sounding more and more like what I want in my life.

[@nismofreak33]

thanks again, we are very lucky to have you. i absolutely love the layout on the Subaru build. its what put me onto you in the first place.

[@PleaseBuyMyCat]

Amazing. Keep doing what you're doing Peter you are moving the industry forward at light speed!!!

[@agonydaddy]

Wonderful video @Pssound thanks again for sharing your wisdoms and experience Peter thanks so much

[@nectros7157]

I'm doing my first IB build and thanks for the great ideas. Also thank you for the simplification of leakage and its real impact. I was told when I started "you have to seal every hole, even open fastener holes"....so I went crazy with the sound treatment.

[@antro_oner]

I've watched this video three times now and I'm still learning something new each time.

[@salar7459]

happen to me on the tuning video.

[@jasonhicks767]

Thank you for doing these videos!

[@krysisn]

love , love , love this!!!! thank you!!!!

[@shawnosbourne509]

Amazing work thanks so much for sharimg this video it will give you a clear vision of proper work at the highest level

[@milesbachelor8747]

Without a doubt IB is my next project. Acoustic Elegance is relatively local, two states away. Going to take a weekend trip this summer for more inspiration

[@nicholasstephey8475]

Awesome as always. Thanks petet

[@ccvideotech]

Great video thanks as always for sharing!

[@shawnosbourne9439]

Thanks so much bro this is very good information

[@carlnorrbom]

Hi. Very informative indeed. I am very intrigued to try out a trunk baffle in my next build. :-)

[@KookyBloke]

M

[@williamprice4269]

Thank you Peter!!!

[@ryanwooster4477]

I used a 10mm steel plate welded in...lots said it wouldn't work.with sound deadner on it works great

[@adaboy4z]

I want to experiment with this technique. I have a Kicker 15 laying around. Thanks for the video!!

[@pssound9749]

It’s not ideal for any sub! Their T/S specs have to be suitable for this application. Low Fs (20-25Hz), high Qts (0.5-0.8), high VAS (150L+ for a 15”), high Xmax (18-20mm+ for a 15”).

[@adaboy4z]

@@pssound9749 Thank you for that info!

[@carybunker37]

Yes! I’m attempting my first IB build with the FI 15 because of you!

[@geraldwinder5590]

Which Fi sub did you use??? Cause I have a 15" SSD ferrite magnet and a 15" Q Neo... I reached out to Fi a hour ago, to asking either will work in infinite baffle, but they haven't responded yet...

[@chesspiece81]

Today boys and girls we are going to learn how to build a speaker box. Just make sure you forget to put the back off. Awesome job and great content. When you put the back seat up would it still be considered an infinite baffle? Granted the seat isn't creating a perfect seal but it in not as open to the atmosphere.

[@MrDivision89]

Hello, What specs should I look for in a subwoofer to determine if its good to be used on IB setup? I have Carpower Raptor 12mk2, and I'm wondering if I should go for reflex or IB in Volvo 240 trunk. I have built IB setup in one volvo 240, it had SPL Dynamics 12" and worked great tho I didnt have enough power for it back then. Thanks for all the awesome content! Br, Jussi, Finland

[@williamprice4269]

I remember you doing that Impreza. That would have given me a migraine.

[@alimahdavi2276]

Hey Peter very nice of you too make this educational material. This is the content we need, but don't deserve😂😂😂 Got a question. Is an undertuned ported box practically the same as a sealed box? I simulated a trunk IB setup in WinISD and compared the sealed version with the ported version (tuned at 16Hz to only allow DC airflow for cabin and assist a little with the low lows). The effect on phase and group delay were minimal at +20Hz. It seemed fine so I made it, set it up and I'm happy with how it sounds. The question being, have I lost anything going from IB to an undertuned ported? Not to mention the response can now stay near flat down to 18Hz, gaining over 8dB over the IB, which is impressive.

[@pssound9749]

Hard to tell without knowing what sub you have. When you use subs like the AE in the video, I don’t think anything can beat them for SQ. Having certain frequency response is just a single thing in the equation to determine what it actually sounds like.

[@e36coupethemis]

amazing work on the baffles....by the way have you ever done any e36 truck and show some work done?keep up the great job

[@pssound9749]

Hi, We haven’t worked on one of those yet. Also, pretty much everything is shown on KZbin/Fb channel.

[@CarAudioHorizons]

Another great video, I would love to do IB configuration but unfortunately I have an SUV and would have to cut through the floor🤔

[@pssound9749]

Yes, pretty much true IB is the only option like in my Honda.

[@anthonytan8751]

Thx again for educational vids. Quick query, how do you recommend advise audio display unit if a vehicle rear cabin boot have battery? The boot space is spacious though. I have one zapco hd dsp, 5 x 2ch mini amps bewith.

[@pssound9749]

Do you mean layout & design? If so, i’m not sure i can answer it as there are so many factors.

[@mattnucci7716]

I’m starting on an Impreza like the one you showed here. I’m aware of the electrical system shortcomings too, so I’m curious what that car had for an alternator and battery and what you would have preferred them be changed to if you could. Thanks for this video, very timely!

[@pssound9749]

That Scubby had stock alt with Optima Red Top upfront and a 40Ah Stinger AGM at the back. Having min 40-60Ah lithium would help to step up to bigger bass power, but if you plan a hungry system, then plan for an uprated alternator too.

[@BobBasshead]

Going all Lithium is the best bet.

[@gonzoe123]

What are your thoughts about leakage around the C-pillars? That is where a lot of manufactures pass wiring into the trunk and the holes can be massive.

[@pssound9749]

You also have trim panels over them, then the side of the seats, so it doesn’t really leak as much back into the cabin. Also, you have to compare the cone area to the level of leakage and then any leakage is negligible.

[@jprieto727]

Pete would you ever face ib subs at each other? I have one jbl gti mkii 10" where the original ls 430 sub was, I two 10 gti sub and was thinking of face to face and port thru ski hole armrest

[@pssound9749]

That’s an option too, but how would you mount them? Onto the back of the seat?

[@antro_oner]

What t/s parameters would be defining factors of an infinite baffle? Would it be a QTS over .6?

[@wtfbenny]

I've had good luck with as low as 0.4qts drivers; a trunk isn't really true IB

[@yiaxiong7864]

You should make and sell kits. In my IB setup, I feel like too much air is moving up to the rear deck causing a lot of rattles. I have the rear deck sound deadened but it doesn't seem to make a significant difference. Do you think it would be a good idea to mount a board on the bottom of the rear deck to prevent or reduce the rear deck rattles?

[@pssound9749]

Yes, a board would certainly help with lots of isolation & foam between the shelf and the board or just stack & glue boards on top & bottom.

[@yiaxiong7864]

@@pssound9749 ok thanks

[@urielmejia3600]

Hey Peter, when do you feel like the system is completely done? I just put a full system in my 1999 Ford Ranger, a tiny single cab pickup truck now the whole interior back panel is essentially a big amp rack. I like what I have now but I kinda wanna change the rear speakers and subwoofers to something bigger. I had an installer do some of the work but gave me my truck back with alternator whine and hissing when it never had that before. So I’m hesitant to pay someone if I want to switch it up again. Thanks

[@pssound9749]

Well, it’s completely done when you have no noises and the setup is properly tuned. You just need someone more capable & reputable than this aforementioned installer.

[@urielmejia3600]

@@pssound9749 thanks for your reply Peter! I was able to get rid of the annoying alternator whine but part of the hiss is still there even after playing with the amp gains, it’s just unfortunate that you pay good money and expect the quality to live up to what the install said they could do. I will try another installer here locally and see how it goes. Greetings from Arizona, hope all is well.

[@IPsyChARTz]

I am considering to do such a setup in my Audi A4 B8 Sedan. I am worrying that my trunk will rattle insanely from in and outside. I would like to use an Audio System R12FA Evo. (375W Rms). I think that amount of power should be enough for a nice sq build?

[@pssound9749]

Yes, that power should be enough for a 12”.

[@christittle1131]

If speaker the cone facing the seat does back seat have to be laid down or can it stay up?

[@pssound9749]

There is a video showing the test results with seats up/down, please check it in the trunk-IB playlist.

[@denniswalker1640]

Another good video, I was wondering how old you were when you did your first install,, I was in my low teens ?? And I'm sure your self taught???

[@pssound9749]

I was hooked at 14 and never looked back! I’m like a sponge when it comes to caraudio. I was 32 when i won Euro Finals.

[@ajazzyluv]

IF I was to do IB in my 2008 Chrysler 300C......Will any sub work for that?....I'm looking at Morel, Xcelsus or Blam equipment. Will 2 12' work?

[@pssound9749]

It’s not ideal for any sub! Their T/S specs have to be suitable for this application. Low Fs (20-25Hz), high Qts (0.5-0.8), high VAS (150L+ for a 15”), high Xmax (18-20mm+ for a 15”). The more cone area, the better.

[@denniswalker1640]

Another question, how long were you installing ,before you went sq, I think most of us installers end up going sq ish, I just a matter of time

[@pssound9749]

I’ve always been into SQ! 😃

[@hifiman4562]

I'd like to know how to seal off my suv for IB use. 2005 Nissan Xterra. Can it be done?

[@pssound9749]

It’s easy in saloon trunks, a bit more difficult to separate the trunk on an SUV. Your other option is “true IB”. Check out the playlist for trunk & true IB on the channel, shows you everything.

[@gabrielr6679]

Can you show more true infinite baffle like your car? And also are there anyone with true infinite baffle with 4 or more 12s, 15s or 18s for SQL setup as I am thinking about doing true infinite baffle in a suv but going to add more cone area for more spl out of them or correct me if I'm wrong as I have never done it.

[@pssound9749]

Go to the True IB playlist on the channel. There’s a build with a 24” shown there.

[@gabrielr6679]

@@pssound9749 so I see that ib can get really low in the tens, what is the frequency response for the higher frequencies 40, 50, or even up to 100 Hz? Can ib cover that wide of a bandwidth?

[@pssound9749]

Gabriel R they can play upto midrange if they want, just like any sub, BUT what you and everyone else has to understand is that what you hear mainly depends on where the sub is located in the car and what car it is. Watch the video about “why upfront subwoofer in a car” video on the channel, that will change your perspective about what you actually hear in a car.

[@ranvijaydhami7246]

hello bro . please tell me that audible physics midbass vs hybrid audio x6 which one is better for sq

[@pssound9749]

2way/3way? Where is the driver located? What’s the installation type? Where is the sub located? What’s the budget?

[@ranvijaydhami7246]

2 way with nz 3 location is door pods sub in trunk budget is not a problem

[@MrGilmond]

Mettre un Subwoofer de 38 cm sur une plage arrière en bois de 18 mm es t'il possible ? Is it possible to put a 38 cm subwoofer on an 18 mm wooden rear shelf?

[@pssound9749]

I’d rather suggest min 36mm and many many bolting points heavily supported.

[@nuclearbum9858]

which series of AE subs are good for trunk IB

[@pssound9749]

Almost all of them can perform great! SPB, IB, HT. AE subs are beautiful!

[@deeznuttz7980]

What kind of glue did you use

[@pssound9749]

Not sure, it was ages ago. Standard wood glue or PU.

[@theejoeylee]

I just want to hang some 8s under my rear deck where the 6.5s were

[@666Necropsy]

its aaawesome with accent lol

[@pssound9749]

Everyone has accent! 😃

[@pepper-a8144]

Why you use big free air subwoofer?

[@pssound9749]

Because it’s most musical, sensitive option you can have in a saloon/sedan car.

[@pepper-a8144]

@@pssound9749 логично! Ok, rear sealed sub + free air sub = great bass

[@pepper-a8144]

@@pssound9749 at crossover, suv ? Sealed box or vent?

[@pssound9749]

PePPeR - A in SUV you can do “true IB” by cutting a hole through the floor or just have a box.

[@alihariris2933]

مرحبا

[@klubstompers]

Is this still considered an Infinite baffle, when it is just a large enclosure? Is it because the trunk is so large the waves don't effect the woofer movement, or?

[@alimahdavi2276]

Usually when the sealed box size is more than 4× the sum of all drivers' Vas, the box is considered as a practical IB. In other words, an IB is just a very big sealed box. There's no practical difference between that and a really infinite volume box.

[@klubstompers]

@@alimahdavi2276 TY!!

[@alimahdavi2276]

@@klubstompers Np pal👍

[@Chris_Wolfgram]

How to "seal IB" ? Isn't that an oxymoron ? :)

[@pssound9749]

You gotta seal it in a car! 😃

[@Chris_Wolfgram]

@@pssound9749 I get it :) Don't mind me too much. Nobody else does :) lol

[@sbeezynukka]

Your doors are also an “ib” setup which is why we try to “seal” them as much as possible

[@greenbackmafia_8655]

I have been looking into doing this type of build I went from a suv with a single 15 inch sundown u model in it in a big ass box to a Chrysler 300 and having to make a new box tnats still big and it sounds good but if these beat hard still I would like to know if I can run my sub with a build like this

[@screwedup_ant]

I got a 300 with 2 15s facing the back seats and a port going through the rear deck and it makes all doors shake and flex the windshield a little