In Reply to: An interesting JFET-based active XO design from TNT Audio ... posted by andyr on March 30, 2014 at 18:34:24:
Andy are you using laser trimmed op-amps such as the OPA2134? Your xo's are old (just like us) and I'm thinking you may have TL072's which Rod Elliott says are fine for this application but I don't think they are laser trimmed. Laser trimming minimizes DC offset. Just a thought.
"Our head is round in order to allow our thoughts to change direction." Francis Picabia
Edits: 03/30/14
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Follow Ups
- RE: An interesting JFET-based active XO design from TNT Audio ... - neolith 19:32:34 03/30/14 (3)
- No, neo, I used AD826 (much better than OPA2134, IMO!!). ... - andyr 23:32:40 03/31/14 (2)
- RE: No, neo, I used AD826 (much better than OPA2134, IMO!!). ... - neolith 04:43:10 04/01/14 (1)
- "Have you given thought to making it balanced rather than single- ended?" ... - andyr 17:38:49 04/01/14 (0)