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Which balanced crossover fits with Apogee FR's?

Hello Audiogon Folks,
I have just changed Apogee Diva for Apogee Full Range in my system.
The Apogee crossover is single ended. I play my whole system balanced.
I use Pass 600.5, Audio Research HD 220 and Audio Research Ref 3. I am technical a nono. I like as less interference in the signal as possible and don't like changing values everytime. I know the Pass and the HD 220 deliver different resistance (ohm). I like to use the Pass for the bass section and the HD 220 for mid and high range. Which analog crossover will fit in my system without disminishing sound quality? I was thinking about a Pass XRV, but it's price is a bit above my budget ($ 2500). On eBay there is an Accuphase F35. I need to specify the frequencies, but which?
bokito

Showing 2 responses by ngjockey

ngjockey
1,042 posts
 
Of all the analog xovers I've seen, only the Pass and Krell seem to be internally balanced, and I'm not 100% sure about even those. Most that do offer XLR input/outputs are "servo" or transformer balanced, including Bryston, Marchand and all the pro gear. For my purposes, the servo-balanced NHT X2 was fine, but it's more for subs.

Didn't find any direct info on the FR's and the only crossover number I found for any Apogee was 700 Hz, with no clue of the slope. Maybe you can test them with a calibrated microphone and a RTA, like HolmImpulse, to find out. Caution: With wide-range planar/ribbon drivers, there's also a good chance of notch filters far beyond the crossover point.

Unrelated but did stumble across some opinion you might find interesting...
http://www.high-endaudio.com/RC-Amplifiers.html#Mark
ngjockey
1,042 posts
 
The only OTHER active crossover made specifically for magnetic planar drivers was the Wisdom DAB-1 (Digital Active Brain), which was incredibly complex and powerful. Good luck finding one of those.
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