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Bass level does not match volume level!! Please Help!!!

So I have a 10" infinity perfect powered by a fossgate p-500-2 (500wtt) amp and the bass stays at the same loudness regardless of if the sound volume is on 1 or 20. Also the amp does not turn of when the music is off (does when I turn the car off however). Any help would be great! Thanks for your time.

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Re: Bass level does not match volume level!! Please Help!!! - Alpine MRD-M1000 Car Audio Amplifier Car Amplifiers

That should be the wiring mistake

Posted on Dec 24, 2007

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My amp turns on good but after a while of too much bass causes a ugly sound too loud what could it be? Can it be repaired?

If you have over driven the amp by playing it real loud with the bass control turned up, it is very possible that you have toasted the output stages of amp.
Every time you boost a tone control by 3 db you have doubled the output power at that frequency. So if you are "coasting" along at a nominal 75 watts, the moment you boost the bass by 3 db the amp has to put out 150 watts at that low frequency.. Go to +6db and now the poor amp has to kick out 300 watts! And so on.

Rule of thumb - you never use your tone controls at very loud levels. Tone controls are there to compensate for the poor frequency response of the human ear at low volume levels - the Fletcher Munsen effect. At low volumes our hearing with the lows and high frequencies so when you play something at low volume you boost up the bass and treble to compensate for poor hearing. At loud volumes our ears respond properly.

Sep 12, 2015 | Car Amplifiers

1 Answer

Bass level is the same @ all volume levels

your problem is the wiring... but it is really hard for me to see where the problem is..

is there a way for you to send a picture of what you have done?

Dec 24, 2007 | Rockford Fosgate Punch P5002 Car Audio...

1 Answer

Is it possible to hook up 2-6x9 and 2-12in.subs to the 7540a and still pack a nice punch

yes it is however the hookup for it requires something a bit unorthodox

you have 4 outputs (bridgeable)

channel 1 and 2 must be bridged (to lower the ohms) then connected to the 2 6X9 in Parallel..
this must then be set to the high pass frequency (eliminates bass)
lower all the settings as low as possible then turn them up slightly to increase volume to a level where its the hardest and clean sounding..lower volume after

this eliminates the bass and keeps the 6x9 pushing your mid range and high range frequency

now you have 2 channels remaining,, set 3 and 4 to low pass and connect each 12" to an individual channel. (this keeps the bass and ohms high so you will get a clean bass to match with mids and high's. Dont set or bridge for a low bass as it will jam out the 6x9 and your music will sound terrible.

so there u have a simple hookup that will work and keep you sounding clean. remember not to raise the volume on the 6X9 too much as you will blow them..

Mar 29, 2011 | Infinity 7540A Car Audio Amplifier

1 Answer

What would cause my amp to shut off when the bass hits hard I have two t12s and a fossgate t1500

how big is the amp an if it over a 1000watt then it could be ur power wire .but does it do it then its down on low if it does then check ur speaker wires they could be touching .if it dont shut off then it is more then likly ur power wires not big enuf .i have a 4400watt amp an i have 0g wire ..

Feb 22, 2011 | Car Amplifiers

1 Answer

What would cause my fossgate t1500 to shut off everytime the bass hits hard I have two t12s that it pushes

Sounds like your amp isnt powerful enough to power your subs, whats the wattage of your amp and both subs? Its shutting off when hard bass hits to protect itself from blowing, a good feature as a blown amp means a new one. an amp should always be more powerful than the speakers / subs you are connecting to it. for 2 500w subs your looking at a 1200w amp minimum.

Feb 22, 2011 | Car Amplifiers

1 Answer

I have a Kenwood KAC-9105D amp with 2 Rockford fosgate 10 inch subs in a sealed box. When i turn the volume up loud the bass fades out for a few secs and then comes back to being loud again, this keeps...

It's the battery, not enough juice to supply your amp at loud volumes so the bass will drop out especially on long bass notes. Replace your battery!

Sep 25, 2010 | Kenwood KAC9105D Car Amp

2 Answers

Legacy Amp 2600 watt HELP

Hello e_cody_e,

The settings you have will not break anything and may sound OK.

But they may not be optimum for getting the best bass from your system. The SubSonic setting filters out frequencies below the threshold of hearing allowing the amp to put more power into the frequencies that can be heard. So, it should be set to about the same frequency that your enclosure is tuned for or just a little lower. If your enclosure is tuned for 35Hz, then the subsonic should be close to maximum.

Similarily, the low pass sends all frequencies below the setting to the subs, (other than those blocked by the subsonic filter) and is commonly referred to as the "crossover" frequency. Typical crossover frequencies for subwoofers are 60Hz, 80Hz and 100Hz. For a ported enclosure, lower is probably better.

The phase shift should be set to the position that best synchronizes the bass with the music. Because of the additional wiring required for the subs, the signal to them is sometimes slightly delayed causing the bass to be "out-of-sync" with the rest of the music. The thump of the bass comes just a little sooner or later than expected. If the bass sounds out of phase, turn the phase shift on, otherwise leave it off.

The "gain" or level control allows you to match the amps input to your head units subwoofer output. The best setting is usually as high as possible without distortion. Set it by turning up the head unit volume to about 3/4 maximum and then advance the amp gain until your subs just begin to distort. Then back it off slightly.

These settings should allow your amp to put the most power into the frequencies that your subwoofers are designed for and hence produce the loudest and lowest bass.

Hope this helps.

Jun 28, 2009 | Legacy Car Amplifiers

1 Answer

Ashdown Perfect 10 Bass Combo keep blowng 2 man fuses

What main fuses? Fuses in the car electrical system? If so, your amp is too powerful to run through the cars electrical system, you should get a heavy guage wore ran straight from the battery, with its own dedicated fuse placed in-line, ad close to the battery as possible. Wait, is this a bass guitar combo??? Open it up, if there's wax coming from the power supply, thats prolly the culprit. Check for any obviously blown resistors or any short circuits. But most likely, its not gonna be user-servicable.

Feb 28, 2008 | Ashdown Perfect 10 Bass Combo Amp Car...

1 Answer

Amp Issues

1) Make sure a bridged load of no less than 4 ohms is applied.
2) make sure both the left & right channels are working.

Jan 29, 2008 | Rockford Fosgate Punch P2002 Car Audio...

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