2. amps-preamps
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Will this amp trick work for increasing bass performance?

I'm considering matching Focal Utopia Scala Evo with two amps for bi-amping, to separate bass and mid/high. 

I'm considering the Pass Labs XP-32 pre-amp, which has individual volume controls for each channel/amp. By slightly increasing bass amp volume over mid/high amp volume, I get to feel more punch from the 11" woofers. The crossover in the Focals cuts off at 220Hz, so only bass and sub bass are affected.

Which two power amps would you consider? Power amp budget is about $30K. Was told Focals like power, so >250W for bass amp seems the minimum. Pre amp will likely be Pass Labs XP-32.
Maybe Pass Labs X250.8 + X150.8 or X250.8 + XA60.8?

Your thoughts please? Any other ideas to get more bass performance from the 11" woofers in the Focals? Subwoofer is not an option. I know McIntosh has a pre-amp with equalizer, which would solve the problem too. But I always thought EQs are a no-no.
robert1976

Showing 1 response by audiorusty

audiorusty
265 posts
 
Robert,

I believe you are on the right track. You probably don't need a sub unless you are listening to EDM or at concert level volume. Focal recommends an amp up to 500 watts, so depending on how much bass you are looking for I would get an amp as close to 500 watts as I could afford. You have a large room which makes it easier to over drive an amp powering the low end if you going for high volume.

Adding eq can help tailor the sound even more if desired. If you are looking for that chest thump you could further accent the 40 to 80 hz region with out boosting the 160 to 220 hz area which can start to give you that hollow, in a tunnel type sound, depending how surgical your eq is.

I believe that Pass amps and pre amps are truly balanced so if you convert the balanced output to RCA I believe you will loose 6db of out put
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