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Old 14th August 2004, 05:27 AM   #1
memito is offline memito  United States
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Default 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?
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Old 14th August 2004, 06:07 AM   #2
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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.
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Old 14th August 2004, 09:32 AM   #3
sss is offline sss  Israel
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Default Re: Boomy Sub

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


Quote:
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
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Old 14th August 2004, 03:13 PM   #4
memito is offline memito  United States
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will putting more polyfil inside the box help?
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Old 14th August 2004, 04:02 PM   #5
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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
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Old 14th August 2004, 04:42 PM   #6
djQUAN is offline djQUAN  Philippines
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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.
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Old 16th August 2004, 05:25 AM   #7
memito is offline memito  United States
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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?
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Old 16th August 2004, 05:42 AM   #8
Hayden is offline Hayden  Australia
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could be the sound your playing
is it a test tone or a song?
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Old 16th August 2004, 05:48 AM   #9
memito is offline memito  United States
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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
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Old 16th August 2004, 06:02 AM   #10
Hayden is offline Hayden  Australia
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is the box mdf 12mm
whats the modle of the sub
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