2. amps-preamps
  3. 1153965606

2 Pre-Outs?

I have a high end preamplifier (which has 2 balanced pre outputs) connected to two stereo amplifiers, both J. Rowlands 112's. Each amp is connected two a pair of 8 Ohms loudspeakers with fairly equal efficiency ratings.
When I play a source (digital or analog) both loudspeakers lose their inherent sonic virtues, particularly gain. When I play each one individually(by turning off one or the other amp.), each pair performs flawlessly.
Should I increase the gain on the preamp?
128x128drmoles
dan_ed
2,451 posts
 
This sounds like a Rube Goldberg project. :)

Seriously, along with the issues previously mentioned I'm wondering if there is something going on with the sensitivity between pre and amps when you try to run everything together. Don't know where you're trying to get to, but have fun.
drmoles's avatar
drmoles OP
16 posts
 
Hi Dan_Ed:
I am been searching for performance level reproduction (96 dB's without fatigue and stridence) and I think that I have achive room filling sound that is involving, accurate and quite detailed.
dan_ed
2,451 posts
 
I'm sure it's filling the room! :) As to gain, if the pre is built to run both outputs simultaneously I would not expect there to be any issues with gain. Do you find that when you drive both amp/speaker pairs that you have to double the volume setting to get back to the sound of a single pair?
jtgofish's avatar
jtgofish
513 posts
 
Drmoles,What you are doing is truly radical.I do know a bloke who uses a pair of Quad 989s along side some Infinity ribbons and active woofers-through different power amps so I guess this is similar.He reckons this just really works well.So maybe you are on to something.
aball
2,016 posts
 
Take a look at my "system" page. I did the same with 2 systems. Enjoy!
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