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amp on but no bass

 
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Old 11-19-2008, 02:49 AM
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amp on but no bass

well ive looked around but didnt really find any helpfull sites... i have my amp and 2 12's wired up... all fuses, ground, power,, rca's, are good. problem is that amp light turns on but i get no bass... if i turn up the sound it begins to bump a lil but nothing like it used to...gain is on middle even when i turn it up nothing improves
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Old 11-19-2008, 02:56 AM
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Re: amp on but no bass

have you tired to run the subs with a difference sub? cause my boys amp did the same thing and it ended up being a blown sub
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Old 11-19-2008, 02:58 AM
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Re: amp on but no bass

check your settings on your radio. make sure the bass is turned up. also make sure that if you have a "loud" setting or button that is activated. otherwise, check the speaker wire inside of the speaker box that connects the sub to the box. also check the RCA's where they are connected behind the radio. if this all fails, congrats you have burned out the output channels of your amp :(
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Old 11-19-2008, 03:01 AM
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Re: amp on but no bass

Quote:
Originally Posted by 2.2Lude View Post
have you tired to run the subs with a difference sub? cause my boys amp did the same thing and it ended up being a blown sub
yea i tired it with a new one same thing tho
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Old 11-19-2008, 03:03 AM
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Re: amp on but no bass

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Originally Posted by zbucy View Post
check your settings on your radio. make sure the bass is turned up. also make sure that if you have a "loud" setting or button that is activated. otherwise, check the speaker wire inside of the speaker box that connects the sub to the box. also check the RCA's where they are connected behind the radio. if this all fails, congrats you have burned out the output channels of your amp :(
yea its on loud,, rca's good.... lol how did i do that?
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Old 11-19-2008, 03:07 AM
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Re: amp on but no bass

idk...my friend just had the same problem with a 2400w volfenhag amp. it was going great for a long time, he changed nothing, and one day he turned it on and no sound! he sent it back to the manufacturer and they repaired it for free cuz those amps have a lifetime warranty. they said it was a design problem.
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Old 11-19-2008, 03:11 AM
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Re: amp on but no bass

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Originally Posted by zbucy View Post
idk...my friend just had the same problem with a 2400w volfenhag amp. it was going great for a long time, he changed nothing, and one day he turned it on and no sound! he sent it back to the manufacturer and they repaired it for free cuz those amps have a lifetime warranty. they said it was a design problem.
mmmmm.... sucks well atleast now i know its noth worth trying to fix lol
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Old 11-19-2008, 12:54 PM
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Re: amp on but no bass

Quote:
Originally Posted by twign209 View Post
well ive looked around but didnt really find any helpfull sites... i have my amp and 2 12's wired up... all fuses, ground, power,, rca's, are good. problem is that amp light turns on but i get no bass... if i turn up the sound it begins to bump a lil but nothing like it used to...gain is on middle even when i turn it up nothing improves
Seriously?
www.DIYmobileaudio.com
www.caraudio.com
www.carstereo.com
www.the12volt.com
www.caraudioforum.com
www.sounddomain.com
www.forum.realmofexcursion.com
-- more?? --

Quote:
Originally Posted by zbucy View Post
check your settings on your radio. make sure the bass is turned up. also make sure that if you have a "loud" setting or button that is activated. otherwise, check the speaker wire inside of the speaker box that connects the sub to the box. also check the RCA's where they are connected behind the radio. if this all fails, congrats you have burned out the output channels of your amp :(
Quote:
Originally Posted by twign209 View Post
mmmmm.... sucks well atleast now i know its noth worth trying to fix lol
Seriously? x2!
Have you even tried testing the outputs with a DMM (digital multimeter)?
set it on the LOWEST AC setting.. the Same way you would "Properly" set your gains.
Read this somewhat controversial post for information about Using the DMM.


the PROPER method of Trouble shooting is to start at the "Problem" and work your way to the Source...
If yourt AMp isnt bumpin....
1) Check the Sub for continuity--AT the sub, One at a time- Use the "Ohm" setting on your DMM --your subs are disconnected while doing this of course-- (Edit: Yes, even from eachother.)
2) they test out good? Fine- Hook the wires back up and test at the terminal cup-- or at the Amp hookup if you didnt use a terminal, DO NOT Hook it up to the amp yet! What ohm load are you getting? You didn't say if your 12" subs are single Voice coil, or dual. 8, 4, or 2 Ohm. Wired in Series or Parallel? What reading are you getting with both subs hooked up?
3) If it is 2 Ohms or less... are you SURE your amplifier can handle the load?
4) with the subs STILL disconnected-- go to the link above, read, understand, then test your amplifiers output.
Make sure no Hi-Pass filters, crossovers, or multi Channel switches are turned on. I dont know what specific Model of amp you have here so I am clueless as to what to tell you to check for. Other than the basics I have already listed. if it still is not putting out ANY signal...
5) Temporarily replace/run new rca's from your HU (or any processor you may have in line) to the amplifier-- do this with KNOWN good RCA's all the way back to the source unit/Head Unit. Still no signal? Try a portable MP3 player or CD player (using a headphone to RCA adaptor.)

welcome to the world of 12 volt electronics.

p.s... shouldnt this be moved to the I.C.E. Section?
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Quote:
Originally Posted by shatterbox View Post
People say the biggest difference you can change to your system is to add a subwoofer. Which is true, it is the most noticable difference. But running an amplifier to a good set of speakers makes the BEST difference.

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Last edited by LilMsPrelude; 11-19-2008 at 05:42 PM.
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Old 11-19-2008, 10:16 PM
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Re: amp on but no bass

I'd check your headunit's manual, most modern units have a subwoofer on/off option. Make sure they are turned on.
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Old 11-23-2008, 01:10 AM
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Re: amp on but no bass

Wat kind of amp and subs do you have?
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Old 11-23-2008, 01:39 PM
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Re: amp on but no bass

Quote:
Originally Posted by LilMsPrelude View Post
Seriously?
www.DIYmobileaudio.com
www.caraudio.com
www.carstereo.com
www.the12volt.com
www.caraudioforum.com
www.sounddomain.com
www.forum.realmofexcursion.com
-- more?? --





Seriously? x2!
Have you even tried testing the outputs with a DMM (digital multimeter)?
set it on the LOWEST AC setting.. the Same way you would "Properly" set your gains.
Read this somewhat controversial post for information about Using the DMM.


the PROPER method of Trouble shooting is to start at the "Problem" and work your way to the Source...
If yourt AMp isnt bumpin....
1) Check the Sub for continuity--AT the sub, One at a time- Use the "Ohm" setting on your DMM --your subs are disconnected while doing this of course-- (Edit: Yes, even from eachother.)
2) they test out good? Fine- Hook the wires back up and test at the terminal cup-- or at the Amp hookup if you didnt use a terminal, DO NOT Hook it up to the amp yet! What ohm load are you getting? You didn't say if your 12" subs are single Voice coil, or dual. 8, 4, or 2 Ohm. Wired in Series or Parallel? What reading are you getting with both subs hooked up?
3) If it is 2 Ohms or less... are you SURE your amplifier can handle the load?
4) with the subs STILL disconnected-- go to the link above, read, understand, then test your amplifiers output.
Make sure no Hi-Pass filters, crossovers, or multi Channel switches are turned on. I dont know what specific Model of amp you have here so I am clueless as to what to tell you to check for. Other than the basics I have already listed. if it still is not putting out ANY signal...
5) Temporarily replace/run new rca's from your HU (or any processor you may have in line) to the amplifier-- do this with KNOWN good RCA's all the way back to the source unit/Head Unit. Still no signal? Try a portable MP3 player or CD player (using a headphone to RCA adaptor.)

welcome to the world of 12 volt electronics.

p.s... shouldnt this be moved to the I.C.E. Section?


lmao no i just checked here and google.......idk i was going to put it there but idk how to move it
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Old 11-23-2008, 01:40 PM
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Re: amp on but no bass

Quote:
Originally Posted by waltrupp1988 View Post
Wat kind of amp and subs do you have?
nothing special 2 visonik 12in and the power amp thats trash
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Old 11-23-2008, 01:43 PM
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Re: amp on but no bass

il try the dmm today
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Old 03-05-2010, 01:53 AM
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Re: amp on but no bass

laaate update:

this was before my elct. class (hence the ignorance & post fail's), i ended up selling the amp for like $30,, it was all testing out fine, outputing signal to sub's too, yet no sound so i sold it
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Old 03-05-2010, 02:01 AM
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Re: amp on but no bass

make sure the fuse is good. i have subs, the amp worked but no bass. fuse was blown. replaced it, then bass
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Old 03-06-2010, 02:47 AM
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Re: amp on but no bass

Sometimes reversing the polarity to the subs helps if you're running two off the same amp, or running a sealed enclosure box where both the subs share the same volume of air. Run one output from the amp to the sub +to+/-to- and the other one +to-/-to+.
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Old 03-06-2010, 03:12 AM
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Re: amp on but no bass

welcome to four months ago Einstein.
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Quote:
Originally Posted by shatterbox View Post
People say the biggest difference you can change to your system is to add a subwoofer. Which is true, it is the most noticable difference. But running an amplifier to a good set of speakers makes the BEST difference.

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Old 03-06-2010, 03:22 AM
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Re: amp on but no bass

Oh eff I didn't even notice the original post dates haha. Well now another random person will have a few posts of additional help :)
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Old 03-06-2010, 03:34 AM
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Re: amp on but no bass

HAHAHAHAHA!!!!!!!!!!!!!!!!!
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Quote:
Originally Posted by shatterbox View Post
People say the biggest difference you can change to your system is to add a subwoofer. Which is true, it is the most noticable difference. But running an amplifier to a good set of speakers makes the BEST difference.

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