• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

bias setting

  1. tutor_turtle

    Rega Elex-R Bias setting?

    I was tasked with evaluating a Rega Elex-R. I found the schematics, but no notation on what the bias setting should be. I measure 55mv across each of the bias resistors. It runs quite warm at a moderate volume setting with an 8 ohm load. All the functions work, volume control is smooth and...
  2. tutor_turtle

    MA6600 bias setting?

    I have a MA6600 on my bench for a (right channel) Power Guard issue. This same unit was in seven years ago for the same issue (left channel) Then, as now, I purchased the output board as a whole to simplify the repair as it is a direct coupled design, the pre-drivers were likely damaged as...
  3. Siraudio85

    Kenwood KA-7002 Idle current Adjust Proceedure

    Hello everyone, I have been struggling with my KA-7002's Idle current adjustment. Unfortunately the service manual isn't so clear. So far I have: Connected 2 dummy loads of 80ohms each to each channel on speaker terminals. Connected a 1 Khz signal through aux port. (Manual says main but if I do...
  4. H

    G-9000 Bias Voltage at zero and can't be set after replacing pre driver transistors

    I have just finished a complete recap of a Sansui G-9000 that came into my shop barely playing. I rebuild lots of recievers. I have rebuilt the PA boards and replaced transistors 5-8 ,the the 2sc1628(NPN) and 2sa818(PNP) transistors with KSC2690AS(NPN) and KSA1220AY(PNP) from Mouser. With the...
Back
Top Bottom