Troubleshooting Sound Break Up

Jeff Miller
Jeff Miller Posts: 10
edited June 2010 in Electronics
Greetings, troubleshooting an inherited system, not a very advanced audiophile.

The system: A JVC QL-F4 turntable is connected to mag high L and R on an H.H. Scott 340 Tuner/Amplifier, then on out of the Scott's Tape Record L and R into a Kenwood GE-1000 equalizer's Line In L and R. Signal continues out of the EQ's Line Out L and R to the Phono 1 L and R inputs on the back of a Kenwood KR-9600. The speakers are gigantic, almost five feet long, and custom, from the late seventies, I'm told, when my uncle paid $2,000 to have them built. Curly maple decks top and bottom, a wrap-around of brown brocade fabric with gold flecks. No badges of any kind.

This setup, input output wise, was as I was directed by my repair guys, when I asked if I could use the Scott as a Phono preamp.

Sound is close to perfect on Phono, but there's a breaking up of mids to highs, on vocals, groups of voices/choruses in particular, you can particularly tell. While the sound on Aux (CD's, iPod), or radio, perfect. Removing the EQ and preamp from the lineup doesn't change the 'breaking up'.

Cartridge? I've been trying skating/tonearm weighting adjustments, nothing quite eliminates this 'breaking up at the high end'.

Figured I'd ask the Brains Trust.