Pre/Pro with

Parasound C1 and C2 controllers both offer two programmable channels that may be programmed as non-summed L and R sub outs. These have the balanced connections you are seeking (although auxillary channels are unbalanced outputs) and very good audio quality, but no Audyssey XT. The C2 controllers owner manual states the following regarding programming Auxiliary Channels 9 and 10
"Each of these two channels has independently adjustable high-pass and low-pass filters and provision for deriving content from any or all of the other eight channels, mixed in any proportion you like. Filter type can be “None,” “Lowpass,” or “Highpass.” Filter freq can be set in 5-Hz increments. The high-pass filter, commonly used to keep bass out of small speakers, can be set from 20 Hz to 1 kHz. The low-pass can be set from 20 Hz to 18 kHz. Mix Level sets the percentage and polarity (“phase”) of the new channel’s content that comes from each of the other 7.1 channels, in 1% increments."

The Parasound controllers were recently discontinued and are available at substantial discounts.

Mglenn

Thanks so much

Marty

Why are the Parsifals supposed to cross over so high? They are pretty full range speakers, afaik. Are you confusing the crossover to the bass modules with the crossover to a real sub?

In general, the crossover to the sub for most processors is much lower. You would also need an additional amp as the sub/lfe output of prepros is line level.

If you are looking to replace the passive crossover in the Parsifals with an electronic one, there are more appropriate units. For example, there's a nice deal on the nht X2 at http://home.comcast.net/~jhidley/ This would give you the frequency you need but you would still need the additional amp.

Frankly, I would leave the Parsifal's as is and add a single competent sub for the bottom end, if you need more grunt.

Kal