In need of ib sub to fill the hole in my rear deck

[BnGRacing 10+ year member]

biggest thing is you need to make sure it's 100% sealed between your trunk and cabin, if not you will lose bass and it will be sloppy sounding

Nah, that's a myth. If you seal up the obvious stuff and make a decent baffle, it'll be quite good. Unless you plan on SQ comps, there's really no need to go crazy and fill every hole and go nuts with expanding foam. The bigger difference, that I've found anyway, is sealed vs. unsealed trunk vents. Sometimes your IB setup will sound better with those vents sealed off and sometimes it doesn't. Experiment with duct tape 1st...for obvious reasons.

 

[caseyarndt 10+ year member]

Yea thanks for all the help.

I have read that you should brace the rear deck when running ib, any tips on how to do that?

 

[wenn_du_weinst 10+ year member]

Nah, that's a myth. If you seal up the obvious stuff and make a decent baffle, it'll be quite good. Unless you plan on SQ comps, there's really no need to go crazy and fill every hole and go nuts with expanding foam. The bigger difference, that I've found anyway, is sealed vs. unsealed trunk vents. Sometimes your IB setup will sound better with those vents sealed off and sometimes it doesn't. Experiment with duct tape 1st...for obvious reasons.

no it's not a myth, you will have sloppy sound if you don't seal it off. I know I've had IB's before

 

[BnGRacing 10+ year member]

no it's not a myth, you will have sloppy sound if you don't seal it off. I know I've had IB's before

I've had IB systems since the 90's...it's a myth. You get sloppy sound when you use a crap amp and/or exceed the mechanical limitations of the sub in order to obtain more output. Cut a hole in the rear deck, lay down some deadening to cover up the holes, and you're done. There's no need to worry about every nook & cranny.

 

[duanebro 10+ year member]

Which ever sub you end up with, I'd love to hear it, I don't know how far dorr is from me, but I have a 15" sub that looks great in a IB. I have never heard an IB setup though.

Duane

 

[wenn_du_weinst 10+ year member]

I've had IB systems since the 90's...it's a myth. You get sloppy sound when you use a crap amp and/or exceed the mechanical limitations of the sub in order to obtain more output. Cut a hole in the rear deck, lay down some deadening to cover up the holes, and you're done. There's no need to worry about every nook & cranny.

You have had them since the 90's but you don't understand the core concept of the design? First you say you don't need to seal off the rear wave from the front now in this post you say that you do. Since you have been in audio since the 90's you should already know that the term Infinite Baffle originated as a very large sealed enclosure as the baffle wrapped ''infinitely'' around the rear wave dividing the 2 and eliminating the cancellation that occurs when the 180 out rear wave meets the front. Sure you really don't need an air tight seal in car as most of the time the sheet metal will vibrate and flex enough to negate the difference in 100% sealed and 90% sealed, it will how ever not be a bad thing to do it correctly and make sure the rear wave cannot meet the front wave.

I have always wondered why the ''old school'' generation seems to be most vocal and unwilling to change, while the newer generation is willing to listen. A lot of things have changed since the 70-80's when car audio started to ramp up.

 

[audioholic 5,000+ posts]

IB setups should indeed be sealed off (front and rear waves) as well as possible. Will it perform horribly if you dont get every last hole? Probably not. But the more thorough you are, the better the final result will be. Front/rear wave cancellation is not a theory, or a myth.