2. amps-preamps
  3. 1322925310

Ref 3 Impedence Mismatch HELP please

I've recently discovered I have an impedence mismatch between my Xilica XD 4080 digital crossover and the ARC REF 3. The input impedence on the Xilica is 10K. Which is too low for the REF 3. This causes issues with the sound in the high frequencies and lows. It seems like a Burson Audio XLR Audio Buffer would be the solution but apparently they are not importing them into the country any more.
I was wondering if there is another product or manufacturer that might have a product as a solution or if there is any way to raise the input impedence of the Xilica Crossover by adding caps or resistors as in internal mod.

Any ideas? I know I can always replace the preamp with a solid state unit which I'm contemplating.

As an after thought, wouldn't it be great if the audio manufacturers could at least codify the specs for all audio equipment so that these problems could be prevented? All manufacturs would have to at least hit a target input and output impedence so that all equipment could work together electrically. It seems a no brainer for the industry to develop.
sgr

Showing 2 responses by sgr

sgr's avatar
sgr OP
689 posts
 
Hi,
Thanks for all the suggestions. There is indeed a bass roll off using the REF 3 with the Xilica Crossover. The spokesman at ARC, confirmed there would be a roll off in the treble and bass, with a loss of dynamics.
I am using a 25 foot balanced interconnect between preamps and crossover so that I could keep the source and preamp from being on a rack inbetween the speakers.

I have recently tried two different solid state preamps in my system and this problem has been confirmed, the other preamps sound much better than my ARC. Darn, I like ARC preamps and never suspected there could be a problem. This does solve one problem though, why wasn't I getting great bass and treble response from my system.

My solution is to look for a great solid state preamp to install in my system. Right now I'm using a friends Gryphon Sonata Allegro and it really has taken the system to a new level. If I could find another of these that's what I'd purchase. Darn, they are not imported into the states any more.

Right now I'm considering a Pass Labs XP 20 preamp. Anyone else have any more suggestions?
Thanks,
Steve
sgr's avatar
sgr OP
689 posts
 
Atmosphere,
Great speaking with. You gave me lots to think about. I really enjoyed speaking with you and learning about your company and products.
Thanks again,
Steve
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