CarAudioForum.com

Go Back   CarAudioForum.com > Discussion Forums > Car Audio: General

Reply
Old 11-15-2002, 08:56 PM   #1
musicboy

Senior Member
 
Join Date: Oct 2002
Location: california
Posts: 1,045
musicboy is on a distinguished road



what are the signs of an amplifier goiing bad?

what are the signs of an amplifier goin bad other than of course the classic blown amp, when you smell a burnt smell and the amp stops to function.

Is there such a thing as an amp starting to sound sh*tty?

I have a soundstream rubicon 302 2 channel bridged to power up one 10" woofer and it just doesn't sound right. It can produce your normal simple 4x4 trance/house bassline but when it comes to some detailed low's with hip hop and slow jams it just can't produce it clearly and accurately, it blabbers it out and rolls off and the wrong low frequencies.

It used to sound ok but now it seems to be sound worse.

is it possible that my amp is going bad?

Last edited by musicboy; 11-15-2002 at 08:58 PM.
musicboy is offline   Reply With Quote

Sponsored Links
Help Syrian Refugees Survive. Donate Now!
Or text REFUGEES to 50555 to give $10 to USA for UNHCR
Old 11-15-2002, 09:39 PM   #2
jayselle

Registered User
 
Join Date: Jul 2002
Posts: 2,337
jayselle is on a distinguished road



hard to say, i would second guess your sub first

but double check the settings on the amp are still right, sometimes after awhile of all that bass those knobs for the x-overs or gains can move, just seen this on some of the lower model amps, but can still happen.....also listening to your system is an acquired taste (for example remember your fist subwoofer or midrange install and you were like damn that sounds good, then three months later you hated it and want louder and better sounding)
jayselle is offline   Reply With Quote

Old 11-16-2002, 06:01 AM   #3
musicboy

Senior Member
 
Join Date: Oct 2002
Location: california
Posts: 1,045
musicboy is on a distinguished road



I don't think it's my sub cuz it has shown no signs of weakness ever.

but my amp has gone into safe mode a ton of times.

anyone els?
musicboy is offline   Reply With Quote

Old 11-16-2002, 07:30 AM   #4
thylantyr

Registered User
 
Join Date: Jan 2002
Location: [Yoda] Belong to us all your base are...
Posts: 12,539
thylantyr has a reputation beyond reputethylantyr has a reputation beyond reputethylantyr has a reputation beyond reputethylantyr has a reputation beyond reputethylantyr has a reputation beyond reputethylantyr has a reputation beyond reputethylantyr has a reputation beyond reputethylantyr has a reputation beyond reputethylantyr has a reputation beyond reputethylantyr has a reputation beyond reputethylantyr has a reputation beyond repute



--what are the signs of an amplifier goin bad

I used to do amp repair.

The majority of the time the amp is blown, dead,
either the power supply transistors are toast
or the output stage transistors are toast or
a combination of both.

On a rare occasion, something in the signal path
circuit blows causing one channel (or two) to
sound uber distorted.

Either it's working fine, blown up, or sounds like
horse crap. I never seen one that is going bad,
not to say that this is not possible - lol

Esoteric thoughts-
Some components may go bad like capacitors in
the signal path that may be audible. Capacitors
in the power supply that are going bad would probably
be inaudible, eventually the cap shorts and blows a fuse.

A resistor that fry an go "open circuit" on you, causing
audible distortion.

Semiconductors usually work, then they just die period - hehe

Can you borrow a friends amplifier just to test your
setup ? drop in his amp and check the sonics.. maybe
it's something else?
thylantyr is offline   Reply With Quote

Old 11-16-2002, 08:52 AM   #5
peter_euro

Registered User
 
Join Date: Dec 2001
Location: Sacramento, California
Posts: 23,128
peter_euro has a reputation beyond reputepeter_euro has a reputation beyond reputepeter_euro has a reputation beyond reputepeter_euro has a reputation beyond reputepeter_euro has a reputation beyond reputepeter_euro has a reputation beyond reputepeter_euro has a reputation beyond reputepeter_euro has a reputation beyond reputepeter_euro has a reputation beyond reputepeter_euro has a reputation beyond reputepeter_euro has a reputation beyond repute



Quote:
Originally posted by thylantyr
--what are the signs of an amplifier goin bad

I used to do amp repair.

The majority of the time the amp is blown, dead,
either the power supply transistors are toast
or the output stage transistors are toast or
a combination of both.

On a rare occasion, something in the signal path
circuit blows causing one channel (or two) to
sound uber distorted.

Either it's working fine, blown up, or sounds like
horse crap. I never seen one that is going bad,
not to say that this is not possible - lol

Esoteric thoughts-
Some components may go bad like capacitors in
the signal path that may be audible. Capacitors
in the power supply that are going bad would probably
be inaudible, eventually the cap shorts and blows a fuse.

A resistor that fry an go "open circuit" on you, causing
audible distortion.

Semiconductors usually work, then they just die period - hehe

Can you borrow a friends amplifier just to test your
setup ? drop in his amp and check the sonics.. maybe
it's something else?
One of my amps has been going worse... And it kept getting worse with time... It is a sub only amp and it would make continous thumping noise on the subs with the volume at 0 or no music playing at all. It would also shut off for no reason from time to time. The verdict from the manufacturer was that some of the soldered connections started to come apart and in addition the electrolyte from the internal components (I think they said internal filters) were leaking and started to short out stuff inside on the IC board. Since the filters were leaking, they did not function properly and I was getting the constant noise bleeding through, regardless of the volume... This was getting worse and worse. So I sent it back, they supposedly fixed it but couple of days after the reinstall, the thumping came back with a vengance, this time the thumping was at almost full volume regardless of the deck volume setting!!! And this is a 2400 w amp running 2 12in DVC subs in 1 Ohm... Needless to say, I sent it back... still waiting for resolution... This is a nightmare for me because I sent it twice already and each time it costs $20 to ship (20 lb amp!!!). So yes, the amps can start going bad without blowing completely...
peter_euro is offline   Reply With Quote

Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 08:46 PM.
Powered by vBulletin® - Copyright © 2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 1996 - 2011 by CarAudioForum.com - all rights reserved.