diyAudio (
-   Car Audio (
-   -   Boomy Sub (

memito 14th August 2004 05:27 AM

Boomy Sub
I have a 12" sub in a sealed box. I built the box to specification for the sub. I thought that sealed boxes were supposed to make the bass have a "punch" to it instead of a "boom". I'm not a big fan of the boominess that subs can produce. Anyways, I stuffed the box with polyfil and the boominess is still there. Is there a way to get rid of the boominess without replacing the box? The box is in my trunk facing towards the back, not towards the front. Someone told me that if I turned the box to face the inside of the car it would help out. Any suggestions?

Bill Fitzpatrick 14th August 2004 06:07 AM

Put your main speakers in the trunk as well and then crawl in there yourself.

The sub is in the trunk. . . I can't stop laughing.

sss 14th August 2004 09:32 AM

Re: Boomy Sub

Originally posted by Bill Fitzpatrick
The sub is in the trunk. . . I can't stop laughing.
do u got a better suggestion?


Originally posted by memito
Is there a way to get rid of the boominess without replacing the box?
try to play with the LPF on the sub- amplifier

memito 14th August 2004 03:13 PM

will putting more polyfil inside the box help?

richie00boy 14th August 2004 04:02 PM

Not really; adding fill can only make the apparant volume of the box increase by 10% or so, which isn't enough to make a huge difference.

The boominess is caused by any or all of the following:

you have your tone controls set poorly
you have your filters set poorly
the sub is just a rubbish design

djQUAN 14th August 2004 04:42 PM

another could be the bass boost on most car amps. if you add some boost. there would be some boominess since it is usually around 40Hz.

I think your crossover is set to around 50Hz or below. increase it to LP at 100Hz or so. which lets the tight bass notes go to the sub.

memito 16th August 2004 05:25 AM

ok, this is what I have on my setup, a hifonics brutus driving a 12" jl. The Hz is at 80 and I added about 6db of gain. This amp has a remote "volume" control, which i don't know if it controls the actual volume or the gain (i've been reading that gain and volume are not the same). So what you guys are saying is that if I go from 80 to 100 on the hz and lower the gain it'll have more of a punch?

Hayden 16th August 2004 05:42 AM

could be the sound your playing
is it a test tone or a song?

memito 16th August 2004 05:48 AM

song, I made sure I tested it first with a test tone to set the hz at 80 and the gain i adjusted it by ear... then i popped in a song that has a punchy bass instead of long boomy notes and they sounded boomy

Hayden 16th August 2004 06:02 AM

is the box mdf 12mm
whats the modle of the sub

All times are GMT. The time now is 08:04 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2