2. amps-preamps
  3. 992190615

Monoblocks did not work

Help me with this problem pl. I had one Classe CA-400 driving Dunlavy V'S with all Classe front end. I was very happy with the sound, so happy I refused to upgrade for 3 years. That the power bug hit me. What if I buy another CA-400 and run each as monoblocks. I did, with all other components remaining same( same IC's going to each amp). The result was way worse than expected. Thin , hashy, ambient sound. Power of 800W/ch (into 4 ohms) became 2400 W/ch, still bad sound. What happened? How do I make use of the beast (120lbs) that I have aquired?
nilthepill

Showing 1 response by garfish

garfish
1,840 posts
 
I don't know if your CA400s are also balanced or not, but I recently vertical bi-amped a pair of McCormack amps using RCA ICs, and I accidently switched one amp to the balanced mode and got sound like you describe.

Do the CA400s have balanced switching of some kind? Other than that, I would make sure all speaker cables are attached to the correct speaker and amp terminals for the way the monos need to work. Good Luck. Craig
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