K&K Audio / Lundahl Transformers

ANANDR your help is needed - LL1676 & LM3875

74.238.134.226

Dear Mr. Raman,

I, too, am using Peter Daniel's LM3875 amps. I am using four in a bi-amp situation.

I had long wanted to use the LL1676's as input transformers and was inspired by your post to go ahead and do it.

To balance my system I am using them in 1:1 configuration for low pass and 2:1 for high pass (take advantage of the attenuation).

I seem to be having problems figuring out how to ground he transformers.

I am getting what it either oscillation or RFI.

Would you let me know how you handled the grounding of the transformers?

I am not using a box for the amps. The chips are mounted on a 3/8 inch thick rectangle of copper. I am using battery power so the amps are not attached to any ground other than through the interconnect which is connected to Dave Davenport's EXTREME line stage.

I wanted to do away with shielding on the interconnect and figured with transformers "at both ends" this would be simple.

I would greatly appreciate the benefit of your experience.

Thanks,

Rick McInnis

Follow Ups:

RE: ANANDR your help is needed - LL1676 & LM3875 - AnandR 09:16:49 10/10/07 (2)
- You have elected to not receive emails - rickmcinnis@dogwoodfabrics.com 12:03:30 10/10/07 (1)
  - Rick, you've got mail (nt) - AnandR 15:12:44 10/10/07 (0)

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