I happily hooked up my new eBay purchase, an Adcom 5802, to my SDA SRS's and as soon as I flicked on the power to the amp, I heard a LOUD horn-like sound. I quickly turned off the power. I checked my wiring and tried it again with my hand on the switch and the same thing happened.
I switched back to the 555II amp and I think my drivers and tweets are all ok.
I searched the forum here and discovered that perhaps the 5802 is not a common ground amp, which the SRS's require. I measured the resistance between the negative speaker output terminals and it's low at 20ohms, but not common ground. Furthermore, I believe that my SRS's (blade/blade) will not work with an isolation transformer in the IC cable.
Am I screwed?
The amp was not cheap (well, less than a lot of you have probably spent on amps) :)
Worse, if all higher powered amps are not common ground, I'm severely limited to the amplifier upgrades I can do for me SRS's.
Please someone tell me how to make this work! Can I connect the output grounds together on the amp? (probably a good question for Adcom. Wish I had a service manual for it).