TexasAngel34
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Was curious how to get some good sound/bass out of my speakers... i have a sony cd player with (2) 12 DUB Subwoofers, my amp is a fosgate 700 watts... it sounds good but not as good as i want.... suggestions please
best way to get good bass
- Thread starter TexasAngel34
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paul_smith_347
Active Member
I don't know what your DUB's are rated for, but 700 watts seems a bit low for two 12's. Might try a new amp or rewiring for less OHMS. Depending on your voice coils and the Ohms they can run, anytime you lower the OHMS (resistance) you gain power power supplied to the subs. I don't recall what Ohms Rockford amps are stable at.... I can't recall if its one or two, but depending on how your subs are wired, you may not be getting peak power to the subs. An audio shop will be able to fill in the gaps i'm not sure about. Find a good one and see what they say, thats the best advice I have.
Captain Morgan
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Hi Angel, do you have any model numbers for these?
I'm with Paul_Smith_347, but it could be that there is an adjustment on the Fosgate that attenuates the input signal. Look for any small knobs that adjust the input. If they are at 50% etc then just crank them up to 90%ish. Does your Sony have an equalizer or Bass -\+ adjustment?
If the Fosgate is running all of your system then it merits getting a dedicated amp just for the subs. 12" is not as punchy and responsive as 10" and can eat more juice to make them really breath.
There are any number of 2 or 4 channel amps that are bridgeable that would gives those 12"s a really good thumpin and NOT break the bank, assuming that the input level was sufficient.
I'm with Paul_Smith_347, but it could be that there is an adjustment on the Fosgate that attenuates the input signal. Look for any small knobs that adjust the input. If they are at 50% etc then just crank them up to 90%ish. Does your Sony have an equalizer or Bass -\+ adjustment?
If the Fosgate is running all of your system then it merits getting a dedicated amp just for the subs. 12" is not as punchy and responsive as 10" and can eat more juice to make them really breath.
There are any number of 2 or 4 channel amps that are bridgeable that would gives those 12"s a really good thumpin and NOT break the bank, assuming that the input level was sufficient.
panda24619
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or a new ported box tuned to 32hz made out of 3/4 mdf will do the trick. 
GAINMOB
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all the above...rewire for lower ohms if can hold it...bigger gauge wires...vented box...3/4" wood...lastly placement...if your amp isnt strong enough the subs will starve and not sound right...my 18" is like that...i put my ma audio 1200rms (pushing 800) on it and it sounds good...put my power acoustik 3600D 1800rms on it...BOOM BOOM BOOM BOOM BOOM!!!
Captain Morgan
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Crap, that's what I get for assuming (that she already has boxes)
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TexasAngel34
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Yes its in the original dub box.. will take pics and get the info on them... my sony has so many adjuatments so got to mess with those and my roommate said the amp is not turned up to much
Captain Morgan
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The theory that an amp shouldn't be turned up too much has merit, but needs qualification.
The input attenuation can keep an amp from saturation, or clipping (amplifying a signal so that the peaks of the waves are beyond it's headroom and puts out minute pulses of DC instead of the fluctuating AC) which can kill both the speakers and the amp.
Those knobs on the amp - are dumb, they don't know anything about what is getting fed to them, they are only variable resistors and they attenuate the signal be it large or be it small.
If the bass signals sent to the amp are not high to begin with, then having the input attenuation at 50% will equal low volume for you.
You want to provide some good musical bass from the Sony and set the volume to what is comfortable. Then slowly increase the amplification on the Fosgate by decreasing the attenuation, or turning up the amp by providing a stronger input. The bass should sound natural and proportional to the rest of the music. Throw on some Robert Cray, Linda Ronstadt, Stevie Ray Vaughan or Eagles etc and adjust so that the bass is not over powering at normal listening volume.
If your Sony powers all the other speakers and the Fosgate powers just the 12"s for bass, then the balance might not be linear across all volumes. You can compensate for any lack of bass at lower volumes by using the BASS adjustment or EQ on the Sony.
You never turn an amp UP, you can only turn it down.
Hope this helps, happy tweaking.
.
The input attenuation can keep an amp from saturation, or clipping (amplifying a signal so that the peaks of the waves are beyond it's headroom and puts out minute pulses of DC instead of the fluctuating AC) which can kill both the speakers and the amp.
Those knobs on the amp - are dumb, they don't know anything about what is getting fed to them, they are only variable resistors and they attenuate the signal be it large or be it small.
If the bass signals sent to the amp are not high to begin with, then having the input attenuation at 50% will equal low volume for you.
You want to provide some good musical bass from the Sony and set the volume to what is comfortable. Then slowly increase the amplification on the Fosgate by decreasing the attenuation, or turning up the amp by providing a stronger input. The bass should sound natural and proportional to the rest of the music. Throw on some Robert Cray, Linda Ronstadt, Stevie Ray Vaughan or Eagles etc and adjust so that the bass is not over powering at normal listening volume.
If your Sony powers all the other speakers and the Fosgate powers just the 12"s for bass, then the balance might not be linear across all volumes. You can compensate for any lack of bass at lower volumes by using the BASS adjustment or EQ on the Sony.
You never turn an amp UP, you can only turn it down.
Hope this helps, happy tweaking.
.
Last edited:
panda24619
Full Access Members
i have my amps gains to the max. i know its not "good" to do that, but i use this to turn the bass up and down.
not that exact one, but you get the idea.
not that exact one, but you get the idea.
Captain Morgan
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Panda that's just fine, you just put the same functionality at your fingertips.
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TexasAngel34
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Thanks so much, that helps alot... ill make adjustments , probaly gonna go to an audio shop and have them make adjustments, dont want to mess anything up , audio is not my best...
Captain Morgan
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Hopefully they will give it a once over for free (and not sell you anything).
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