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RE: Technical Advice Needed - Phono Output for Adjust Plus

Posted by Barry (A) on March 20, 2016 at 14:17:32

In Reply to: RE: Technical Advice Needed - Phono Output for Adjust Plus posted by John Elison on March 19, 2016 at 16:28:18:

Yes, thanks John. I tried using the moving magnet section. Gain is too low.

There is no problem with the cartridge or the phono preamp as there is no visible clipping when I hook the phono preamp outputs directly up to my old oscilloscope. Peak to peak voltage looks to be about .3mV but its very tough to read.

Also, if I play a -14 dB signal 1K Hz from the Cardas test record, there is no clipping on the Adjust Plus program's oscilloscope. That doesn't help because I can't use that record to run the Adjust Plus tests. That signal is also too low, but at least I get a wave form on Adjust Plus.

Here are the specs Specs:
Etna cartridge: Output 5 cm/ sec @ 1K zero to peak at 45 degrees

Adjust Plus Test record setting: 0dB reference level @ 1K Hz

Xono gain: MC setting used single ended with lowest gain - 57dB

Xonar U7 computer sound card: 1V RMS line in and line out for full voltage. If these were the soundcard specs don't see why I'd be having a problem.

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