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
snook2's avatar
snook2
620 posts
 
I found vertically Bi-amping to sound better using the Aloia's. It took several calls to get the wiring right so you want to make sure about that.
nilthepill OP
842 posts
 
On My quest for perfection, Over the week end I tried to Bi-wire my Dunlavy V's, with my 2- Classe CA 400 in monoblock configuration ( no vert or hor biamping yet) I DID everything right: Connect to the right terminal at both amp and speakers, Both amps in balanced/mono configuration, speaker jumper removed, using a seperate speaker cables( same make, same length) for bass and mid's. Here is what happened. The right speaker worked alright with the right monoblock. The left speaker made a lound sharp popping noise like little fire cracker! Scared shit, I disconnected the left speaker right away. Did some trouble shooting and put jumpers back on an ran single wired.Turned out that left amp channel fuses were blown on the left monoblock even though the channels were bridged. What might have happend? Do you think the mono switch on the left monoblock may not have engaged?
snook2's avatar
snook2
620 posts
 
Call Steve Davis at Hififarm. He's knowledgeable with troubleshooting. Don;t you hate when this crap happens
dekay's avatar
dekay
5,409 posts
 
Nil: Are you related to Kublakhan?
kublakhan
717 posts
 
funny dekay.

i just saw this!
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