Re: Bi-amp Audio Research and Bryston 4BOn Mon, 21 Apr 2008 15:19:55 -0700, Serge Auckland wrote
(in article <fuj3ub024ug@news4.newsguy . com >):
> "Sonnova" <sonnova@audiosanatorium . com > wrote in message
> news:fugf5606am@news2.newsguy . com ...
>> On Sun, 20 Apr 2008 10:22:04 -0700, Serge Auckland wrote
>> (in article <fufu3s02b6h@news2.newsguy . com >):
>>
>>> "Tony Pike" <tonypike@telus . net > wrote in message
>>> news:fufk2301avn@news4.newsguy . com ...
>>>> My original post:
>>>>
>>>> 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?
>>>>
>>>> "Guido Neitzer" <guido.neitzer@web.de> wrote in message
>>>> news:fudnru02948@news5.newsguy . com ...
>>>>>
>>>>> Maybe - don't mix different amplifiers on the same speaker. It just
>>>>> sounds gross. If you don't like the Bryston, get a different amp. In
>>>>> general - bi-amping without active crossover never sounds better than
>>>>> one better single amp.
>>>>>
>>>>> With active crossover, you might (!) get about the same sound qualitiy
>>>>> with more power headroom, but overall, speaker manufacturers know what
>>>>> they're doing, so it's very doubtful, you can match the quality with
>>>>> mixing equipment and hooking up the stuff without measuring equipment.
>>>>>
>>>>> cug
>>>>
>>>> I love both amps, if any in the group are familiar with them. The Audio
>>>> Research D115 mk.2 has the absolute clearest midrange and treble my ears
>>>> identify, but lacks bass, like almost all tube amps. The Bryston is
>>>> amazing
>>>> in all aspects, and being transistor output has solid clear bass to make
>>>> the
>>>> difference. I understand Guido that Martin Logan and other high end
>>>> speakers
>>>> know what they're doing or would not be near the top of the heap, but
>>>> like
>>>> many other speaker manufactures, offer 2 inputs each channel. It is not
>>>> just
>>>> for bi-wiring, but for bi-amping which comes back to my original
>>>> question
>>>> to
>>>> the group.
>>>> Regards,
>>>> Tony.
>>>>
>>>
>>> Bi-amping without using electronic crossovers is pointless. As Guido said
>>> above, there's no point in it, and the results will almost always be
>>> worse,
>>> never better. If you want to play around with the treble/bass balance of
>>> your 'speakers, then fine, enjoy yourself by all means, but don't expect
>>> the
>>> results to be better than what Martin Logan originally supplied. My
>>> advice
>>> is to use the Bryston amp as this is one of the better engineered units,
>>> and
>>> keep the ARC for nostalgia, or indeed, sell it and use the money more
>>> effectively.
>>>
>>> S.
>>>
>>>
>>
>> But it's cheap enough to fool around with an active crossover. The
>> Behringer
>> Pro-X active 2-way stereo crossover is only $90 at Zzounds:
>>
>> * w w w .zzounds . com /item--BEHCX2310
>>
>> If its as good as the rest of the stuff that Behringer makes, it' will be
>> a
>> fine unit, indeed.
>>
>
> I agree, that's the way to do it. Nevertheless, I personally wouldn't use a
> valve amplifier in this application as the electrostatic panels are a pretty
> severe load. Having said that, for $90, it would be a fun thing to do.
> Endless playing around with the treble/bass balance, crossover frequencies
> and slopes. Much more fun than just listening to boring music.......
>
> S.
>
>
I told the OP yesterday that Martin-Logan doesn't recommend tube amps. I
drive a pair of M-Ls, however, with a a pair of VTL monoblocs and they work
and sound fine.