With a line-level xover you will always need an amp on each channel. More specifically, you need amp inputs on each channel. I say that because a multi-channel amp would only work if it also had independent inputs on each channel.
I use 2440's, EV15b mid-bass, and JBL 2240Hs for bass. Tweets are fostex t500amkii's. I used a different approach. No digital crossovers or amps though. Two, Marchand analog xovers, a couple of ~70 watt PP, and a 500watt SS amp. The tweets run with a simple cap off of one of the PP amps.
I am a little confused by your question regarding the resistor. You say these are bias pots (?) but I've not heard of stepped biasing. Are these stepped attenuators?
I use 2440's, EV15b mid-bass, and JBL 2240Hs for bass. Tweets are fostex t500amkii's. I used a different approach. No digital crossovers or amps though. Two, Marchand analog xovers, a couple of ~70 watt PP, and a 500watt SS amp. The tweets run with a simple cap off of one of the PP amps.
I am a little confused by your question regarding the resistor. You say these are bias pots (?) but I've not heard of stepped biasing. Are these stepped attenuators?