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To Bi or not to Bi? That is the question

I have recently purchased a pair of Dahlquist CA2 and W2 speakers. These were/are a fabulous speaker designed to be bi-wired or bi-amped. For those not familiar, there are two cabinets, one for the highs (D'appollito array) and the other cabinet contains 2 6.5" woofers. The two cabinets stack one on top of the other and are bridged together. I currently am using the same amp I had to drive my old speakers which is a "modest" Hafler 9180 (105wpc). Needless to say, I'm not getting the best from my new speakers. What I am looking for help with is in the biamping process. I really like the 9180 which has that warm MOSFET sound and am thinking of keeping the amp to run the top cabinets. I would then like to get a stronger amp (looking at Hafler or Bryston)to drive the bass cabinets. I am a little concerned because I have read differing opinions on using two different powered amps in this configuration - some say they should be the same amp while others say a combo produces good results. What do you think? Also, my pre-amp only has only one set of outs for the mains, so a Y would be needed here - which brings me to another problem - where to fing a high quality Y (I am currently using AQ Opal to go to the main amp)? Thanks for the help in advance! BTW: I do not use an external crossover. Tony
treyhoss

Showing 1 response by gregm

gregm
3,395 posts
 
Bi, I say. Since the choice is vast, I suggest you start with a few amps on loan -- if possible. Just to get an idea. As S7 said & and the resident EE's will confirm, it's useful to match the sound characteristics & phasing of the two amps.
How about a tube for the upper... assuming the Hafler can drive your woofs. Otherwise, you'll need a powerful machine for the woofs which may be faster (if recent model) than the Hafler -- thereby creating phase problems.
Not a problem; just fun in researching, if you can. Good luck, nice speakers!
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