It depends highly on the given situation... (BD-Design)

by Bert , Friday, March 14, 2014, 08:57 (3690 days ago) @ Kevin

Hi Kevin,

This is nothing new...

If your main amp is without issues (noise, lousy performance in the bass) then using the output of the main amp is much more favourable!

Then integration between bass and mid-high range is most optimal without creating separated bass and mid-high differences, the speakers sounds as one and not split into channels...

Another major advantage is that you can exchange the main amp without the need to adjust or re-tune the crossover which takes much time if done properly.

In cases where your amp makes (too much) noise or the bass performance is poor (lack of control?) then using a pre-amp output (if present) should be used unless the output impedance of the pre-amp is high in relation to the total input impedance of both separate amps connected. A factor 1:100 should be minimal! This will otherwise not just give poor bass but also lack of dynamics... sometimes even the noise wins from silence!

Bert

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BD-Design - Only the Best!