Eico MX-99 Multiplex Adaptor

Radio Road

Which tuner to get and getting the most from it. Thank God, for the radio!

While I'm at it - also finished playing with Eico's only multiplex adaptor. Turns out to work and sound very nice. Post alignment, the design provided decent stereo separation (25dB) to 1Khz AND maintains maybe 20dB up to 10Khz. With many other early tubed circuits I've measured, the separation above 1Khz deteriorates rapidly - like 8 to 10dB.

It also uses a bunch of .05Mfd ceramic capacitors in the audio path. Upgrading these and the 50Mfd electrolytic caps at the output markedly improved the sound.

Charles

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Parts Connexion

Topic - Eico MX-99 Multiplex Adaptor - stellavox 05:52:30 12/8/09 (4)

RE: Eico MX-99 Multiplex Adaptor - Marantzguy 14:20:26 12/8/09 (3)

RE: Eico MX-99 Multiplex Adaptor - stellavox 07:12:32 12/9/09 (0)

Rich,that is one of the very best auxiliary mpx ever made. - Michael Samra 18:42:39 12/8/09 (1)

RE: Rich,that is one of the very best auxiliary mpx ever made. - LFsound 23:34:07 01/12/10 (0)

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