Ok, this probably serves me right, buying a used amp on Ebay, but the original ad said one channel was not working. I bought it anyway, hooked it up, and all channels worked! My setup at the time was Infinity Kappa 3 Way 6x9's in the front doors (modified from coaxial to component- mounted mid/tweeters in the dash openings) and as of yesterday I removed the factory Infinity 6 3/4" drivers and installed Kappa 2 ways in the back doors. Here's where things got weird. As soon as I turned the stereo on, a Pioneer AVH-6500DVD, it started to squeal LOUDLY in all speakers once I turned it up beyond 7 on the volume scale. I turned it down, and that back up slightly, and it happened again. To worsen things, I see a plume of smoke rise from the front left tweeter/mid!
Keep in mind, with the factory rears connected, it never did this. I checked impedances, or DC resistance mainly with a DMM. The factory drivers were 2 Ohm, and the new Infinitys read 3 Ohm. I disconnected the rear channel, and tried listening again. I turned on the engine, in case the amp was starved for voltage, and heard HORRIBLE engine noise at the same level as the radio's audio.
I have since then disconnected the amp, and connected the speakers to the head units output, and surprisingly, they all still work! Still running a seperate powered sub from the preamp output.
My amp obviously took a dump. I have no schematics, just a bench power supply, digital oscilloscope, a signal generator and a 5 1/4" Kicker as a test load. My idea is to ring out each channel, front to back, and see where things look odd. If anyone has suggestions, or even schematics, either would greatly be appreciated.
Thanks!
Keep in mind, with the factory rears connected, it never did this. I checked impedances, or DC resistance mainly with a DMM. The factory drivers were 2 Ohm, and the new Infinitys read 3 Ohm. I disconnected the rear channel, and tried listening again. I turned on the engine, in case the amp was starved for voltage, and heard HORRIBLE engine noise at the same level as the radio's audio.
I have since then disconnected the amp, and connected the speakers to the head units output, and surprisingly, they all still work! Still running a seperate powered sub from the preamp output.
My amp obviously took a dump. I have no schematics, just a bench power supply, digital oscilloscope, a signal generator and a 5 1/4" Kicker as a test load. My idea is to ring out each channel, front to back, and see where things look odd. If anyone has suggestions, or even schematics, either would greatly be appreciated.
Thanks!