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dc offset

  1. ChrisP2

    DC Offset Issues - Harmon Kardon HK580i

    Struggled for several weeks off and on with an HK580i that had 6.7-7.0 VDC at the speaker terminals on one channel and neither the Offset or the Bias POTS had much effect. Issue was the OEM glue on the back of the Amp board holding down C431 (electrolytic). Over the years the glue had...
    • ChrisP2
    • Thread
    • dc offset harmon kardon hk hk580i
    • Replies: 3
    • Forum: Solid State
  2. thekid72

    JBL TLX-PS10/12 Subwoofer power on thump. Normal?

    I picked up a JBL TLX-PS10 powered subwoofer locally on the cheap, seller upgraded to a true home theater subwoofer and this fits my need for adding extension to bookshelf speakers just fine. It does have one possible issue, and that is when it cycles on (automatic signal sensing with no bypass)...
  3. D

    Help with DC offset on NAD 7125.

    Hi guys, posted before about DC offset on my NAD 7125 receiver. Please bear with me because I am new to this and love to learn. Recently I noticed my right speaker was lacing some bass/mid. And my left speaker was sounding a bit to loud. I trouble shot the speakers and it's not them. Read the...
  4. tipsy

    Recommend a DC blocking cap?

    My preamp puts out just a tad too much DC and is setting off the DC protection in my amp. Only occasionally. Generally only when inductive or large loads are turned on in the house. Yep, I've tried different outlets and power conditioners, to no avail. The (tube) preamp maker tells me that I...
  5. D

    Checking DC offset on NAD 7125....

    Hi guys. I have a NAD 7125. Have previously posted about a pop when powering it up. Have also noticed the right channel runs a bit weak/distorted. I love to learn so I am going to check the DC offset. I have the schematics...and you can adjusted everything. Now...the schematic manual has a...
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