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View Full Version : Eico HF-81 phono imbalance?


drknstrmyknight
05-02-2008, 08:44 AM
My Eico HF-81, which was rebuilt by NOS Valves :banana: has an unusual manifestation when playing vinyl. The turntable is a Music Hall MMF-5 with an Ortofon Super 30. The speakers are Fostex FE206E's int the Fostex spec BLH's. The left channel has a great degree of cone excursion as compared with the right.

This humble integrated amplifier, which Craig has elevated to rock-star status in our house when used with the aux inputs and digital sources, has no rumble or scratch filters.

I know the HF-81's phono section is not known as a giant killer to begin with, but it does play a part in our systems, and this bothers me a bit.

Some facts:
The left speaker is rather closer to the TT.
Swapping the TT inputs doesn't change things.

Anyone got an idea?

Check it out:

http://www.youtube.com/watch?v=VfVLnmyJaDc
http://www.youtube.com/watch?v=4eSh0ra9Q2Q