Re: Bi-amp Audio Research and Bryston 4B

On Sat, 19 Apr 2008 08:01:51 -0700, Tony Pike wrote
(in article <fud1gv028ec@[EMAIL PROTECTED]
>):

> I have a question with the above subject concerning bi-amping with a 
> Sonic Frontiers Line One tube preamp. Both amps will be accompanying 
> Martin Logan Sequel 2 speakers, all at 8 ohms. I will use the Bryston
> for the woofers and the A.R.C. for the panels. The D115 has level
> controls, but I am unsure if it will be adjustable enough to blend
> equal output for both amps sonically. The Bryston is hooked up with a
> balanced output from the preamp and the D 115 is single ended. I
> realize if I have too much base that I can use single ended to my B4
> to lower by 6db. and maybe equalize better on the base/panel Martin
> Logans. Barring purchasing an outboard adjustable crossover (Bryston's
> is around  $1300.00) - any other suggestions from the group here
> please?
> 
> Regards,
> Tony. 
> 

You don't say, but I suspect that when you say A.R.C. you mean Audio
Research 
Cor****ation and that you are referring to a tube amplifier. While I use My

Martin-Logans with a pair of VTL tube amps, I must tell you that M-L does
not 
recommend tube amps on the electrostatic panels because at high
frequencies 
that ES panels' impedance drops below 2 ohms. So you might want to
re-think 
that scheme. I haven't noticed any problems and it might be fine, but I 
thought I would pass along M-L's caveat to you anyway.