I picked up the 2.3tl last weekend. Since I am anxious to hear how they sound, I hooked up a pair of Musical Design (75 watts per channel in stereo) amps in mono (probably giving me 125 watts) to a Lexicon CP1+ Pre to drive the speakers. I got tiny sounds from the speakers. I had to run up stairs to get the remote for Pre so I can increase the volume. When I returned, there was smoke coming out of one of the amps. I then powered every thing off. I took the fired amp out, set the un-fried amp to stereo and hooked it back up. This amp was also bad because the music was coming out of the right speaker only.
I am poking around and learning that these SDA speakers need common ground amps. I dont know if the Musical Design amps were common ground or not, but I am wondering whether these speakers might fry my amps because the amps were probably not common ground OR there was something previously wrong with the amps (since they have not been used for more than 4 years)?
The speakers are now hooked up to a small receiver and they produce sound. However, I would like to know if the speakers were hurt in any way with my fried amps?
I just bought a Carver TFM 55X and it should be coming soon. Is there anything I should do to avoid similar problems to the new amp?
Maybe it might help the other new owners of the SDA speakers to avoiding similar problems with a SDA 101 course. I would like to know some answers to the questions:
Why SDA speakers require common ground amps?
What is common ground amp?
How one tell if the amp is common ground or not?
What happen to the speakers (or amps) if they are connected to the un-common ground amps?