IB in a hatch, anyone done it? Any reason not to try?
Hello all, as per the thread title, has anyone tried running a form of infinite baffle in a hatchback? If so, how was it? Pros & cons?
I reason that if the boot/trunk has solid ply or mdf panels built for the seat back, sides, and floor, then the cabin can be effectively sealed from the luggage compartment. A new parcel shelf/ baffle to mount the sub(s) would be constructed to replace the original, and this would be sealed to the new side and real panels, plus some form of gasket to seal it to the hatch door itself.
I know that for true IB, there should be a hole cut in the trunk to the outside world, but that isn't realistic to achieve whilst keeping spare tyre, tool kit etc.
Current thinking is to use 1x 15", or 2x 12", or even 3x 10". There seems to be no definitive set of parameters for the ideal IB sub, all I have found is that displacement and xmax are key, and to aim for the trunk have at least 3x VAS for it to work.
Car is a Nissan Almera, which for those of you in the US is a small hatchback, similar in size to a early 2000s Honda Civic or VW Golf. Trunk space is approx. 300 litres/10.5 cuft once the above mentioned panels have been installed.
Eager to hear your thoughts.
Re: IB in a hatch, anyone done it? Any reason not to try?
Re: IB in a hatch, anyone done it? Any reason not to try?
When I read this, I was thinking about Andy's car, but couldn't find any images
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Re: IB in a hatch, anyone done it? Any reason not to try?
From my understanding, IB doesn't always need to vent to the outside, especially if the air space you're using is large enough. My last car ('93 Civic sedan) had 4 SoundStream SS10 Limited 10"s in IB using my trunk (two firing up through the rear deck, two firing through the back seat), and it was a big effort to keep everything sealed off from the cabin. It was essentially using the trunk as a large enclosure.
Attachment 15215
Maybe I went a bit overboard, but there were holes & gaps everywhere that needed to be filled (I used spray foam on the large gaps and silicone on the small seal gaps). It was hammer time.
Unless it's really sealed well from the cabin, I can't see it performing as well as a traditional IB setup using a trunk as the enclosure.
In know it's not your car, but the baffle on the VW in the post above just doesn't look beefy enough for those 15"s IMO. might be the angle of the shot, but the baffle looks a bit warped, and I can't imagine the bracing is sufficient, unless it's hidden from view.
I had a sandwich of 3/4" MDF with deadener in between for the baffle in my Civic; I could make the car move when I grabbed the baffle. Like I said, maybe I went overboard, but damn it dug deep and made my steering wheel flex.
I'm using sealed boxes for the 15's in my current car, and made the enclosures out of sculptural concrete (no rattles, baby!):snap:
post edited for content
Re: IB in a hatch, anyone done it? Any reason not to try?
That's crazy...this was your build?! I used to obsess over this trunk and another one that I can't remember how to look it up anymore when i was trying to figure out how to do IB in my last install. Insanity. Small world.
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Re: IB in a hatch, anyone done it? Any reason not to try?
Attachment 15217
Why yes I have. Thru the floor of a Scion xB
Re: IB in a hatch, anyone done it? Any reason not to try?
Great to see some real world applications, thanks everyone!
That VW is what I was envisaging doing, but with a single 15, or 2x 12s.
Dubscientist, I get what you mean about the baffle. I wonder if it was due to there being more woofer than baffle, looks like 2 15s, which doesn't leave much actual baffle, if that makes sense?
I'm prepared to make a baffle as thick/substantial as necessary to make this work, originally thought 3/4" would be sufficient but can easily make that 1 1/4".
Re: IB in a hatch, anyone done it? Any reason not to try?
Quote:
Originally Posted by
chefhow
That looks... Solid! So.
Chefhow, was this vented to the exterior of the car through the floor? I understand that can give very impressive results.
If it does vent to the outside world, how audible is it from outside? Such as, if you were stopped in traffic would pedestrians be easily able to hear it?
Also, am I right in thinking Scion is a Toyota subsidiary? We don't get them in the UK, sadly.
Re: IB in a hatch, anyone done it? Any reason not to try?
You get the Yaris Verso though, built on the same platform as a Scion xB. Wouldn't recommend a Verso for car audio though (speaking from experience) ;)
Re: IB in a hatch, anyone done it? Any reason not to try?
Quote:
Originally Posted by
Haakono
You get the Yaris Verso though, built on the same platform as a Scion xB. Wouldn't recommend a Verso for car audio though (speaking from experience) ;)
Yeah, true :lol: So the Verso is no good for audio? I quite like the Cube though, but import only here. Is it the same in Norway?