Amp dying, or just the speaker frying
Posted: May 30th, 2012, 8:57 pm
First, my system:
Kenwood Excelon head unit with USB, KDC-X491
Rockford Fosgate amp pushing 2 Infinity 12's
Xtant 302a pushing front speakers, Kenwood 3-ways (will add model# later)
Rear Speakers, pretty much shot, irrelevant...
This morning, I start up the car, and hear a scratching-like noise from the front passenger side speaker. I tapped the driver side speaker panel (you ok in there?), then turn off the stereo.
Turn it back on, same noise from both speakers. Didn't have time to deal with it, so took off for an interview with no tunes (
)
Later in the day, I turn radio on, and seems fine, no scratchy noise, just music.
A while later, after 2 stops, it starts again, kill radio, drive home in silence
I checked all connections on the stereo, RCA cables, tight and secure.
Check amp, smell a slight burn odor. Not pungent, but there. I've had the amp 10+ years, used it for 7-8, so wouldn't surprise me if it is dying. I remove the cover to see if there's anything obvious. I see a little corrosion, but nothing jumps out 'Here's the problem, ME!'
Turn the stereo on, only driver side is scratchy. Pull speaker, woofer isn't barking.
Found I had RCA's backward, L was R, R was L, D'oh! swapped them back (must've goofed up when I removed my stereo to test my brother's new stereo before installing) no big deal, speaker acts the same. No scratchiness now.
I've had amps die, just quit working. I've had speakers go out, sounding crappy then crappier, then finally yanking them out...
Repeat testing has so far yielded no further scratchiness, and I'm quite sure when speakers were working earlier in the day that woofers seemed fine. I'm sure they were yesterday, as I sat jamming for a short while and really should've noticed.
Could the speaker woofer's voice coil frying cause a scratchy sort of feedback that could effect both speakers?
Kenwood Excelon head unit with USB, KDC-X491
Rockford Fosgate amp pushing 2 Infinity 12's
Xtant 302a pushing front speakers, Kenwood 3-ways (will add model# later)
Rear Speakers, pretty much shot, irrelevant...
This morning, I start up the car, and hear a scratching-like noise from the front passenger side speaker. I tapped the driver side speaker panel (you ok in there?), then turn off the stereo.
Turn it back on, same noise from both speakers. Didn't have time to deal with it, so took off for an interview with no tunes (
![Sad :(](./images/smilies/icon_sad.gif)
Later in the day, I turn radio on, and seems fine, no scratchy noise, just music.
A while later, after 2 stops, it starts again, kill radio, drive home in silence
![Crying :crying:](./images/smilies/crying.gif)
I checked all connections on the stereo, RCA cables, tight and secure.
Check amp, smell a slight burn odor. Not pungent, but there. I've had the amp 10+ years, used it for 7-8, so wouldn't surprise me if it is dying. I remove the cover to see if there's anything obvious. I see a little corrosion, but nothing jumps out 'Here's the problem, ME!'
Turn the stereo on, only driver side is scratchy. Pull speaker, woofer isn't barking.
Found I had RCA's backward, L was R, R was L, D'oh! swapped them back (must've goofed up when I removed my stereo to test my brother's new stereo before installing) no big deal, speaker acts the same. No scratchiness now.
I've had amps die, just quit working. I've had speakers go out, sounding crappy then crappier, then finally yanking them out...
Repeat testing has so far yielded no further scratchiness, and I'm quite sure when speakers were working earlier in the day that woofers seemed fine. I'm sure they were yesterday, as I sat jamming for a short while and really should've noticed.
Could the speaker woofer's voice coil frying cause a scratchy sort of feedback that could effect both speakers?