Passive bi-amping and Intro2s

Posted by: Dan H on 01 November 2003

Has anyone tried this? Looking at the Intro manual, it seems to be just a matter of disconnecting the woofer from the crossover and routing its leads/sockets out to the blanked holes in the woofer cabinet.

This puzzles me slightly, as it means (I think) that the tweeter is still associated with the crossover, whilst the woofer is completely isolated from any crossover components and is directly coupled to the second power amp. As it's passive bi-amping we're talking about, that means the woofer gets the whole signal, low and high, whereas the tweeter presumably gets just the part of the signal its associated crossover components don't filter out. Is this right? Are there worthwhile benefits to be had doign this?

Cheers,
Dan

Posted on: 02 November 2003 by David Patterson

Dan,
i believe that the original Credo was designed with no filter on the bass, its crossover was very simple, but the sound was judged to be to bright and forward because of the fact that the bass unit can still produce the upper frequencies.

The more complex crossover was intoduced as a retro fit.

I was able to get my hands on another pair of crossovers for Credos and biamped with 140s , but came to the conclusion it was alot of trouble for little gain.I did biamp with one 140 direct into bass unit and the other through the crossover but it was too forward and bright for me. If you try it just make sure the amp is not plugged directly to tweeter.

David

Posted on: 03 November 2003 by Dan H

David,

Thanks for this; very useful. Sounds like it's not a compelling upgrade that should be a real priority.

Dan