zobel on OT - mccormick - DIY HiFi Forum

zobel on OT

Posted by mccormick (A) on February 19, 2005 at 11:59:43

In Reply to: Re: DC-coupled Foreplay posted by zarniwoop on February 17, 2005 at 17:25:45:

I have to agree that the OPT seems have some high frequency ringing. In triode, it is there but not in your face as is UL. The zobel seems to help, don't recommend speakers with a flat treble response.

I have considered the interstage trans., but do not want to put any more $$ into this amp. I did the P-P rewire not too long ago and am pleased with the sound. The resistors are on the sockets, the amp images better and there seems to be more detail. Also added another cap for a CLC power supply filter. Tried various changes to the SRPP stage as well.

I might opt for a 2A3/300B project if I can find a speaker I like to mate the amp with. I seem to have an affection for 87db speakers.

Mark

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Follow Ups Full Thread

Topic - Ella Mod Success and Qs - Saul P 23:14:06 02/13/05 (8)

Re: Ella Mod Success and Qs - zarniwoop 14:56:56 02/14/05 (7)

My first creative spark, maybe needs some work. - Saul P 21:28:42 02/14/05 (6)

you're close - zarniwoop 15:44:48 02/15/05 (5)

DC-coupled Foreplay - Saul P 10:57:03 02/16/05 (3)

Re: DC-coupled Foreplay - zarniwoop 17:25:45 02/17/05 (2)

zobel on OT - mccormick 11:59:43 02/19/05 (0)

Re: DC-coupled Foreplay - Saul P 19:29:44 02/17/05 (0)

Cool! - Saul P 21:48:38 02/15/05 (0)

Follow Ups

zobel on OT - mccormick 11:59:43 02/19/05 (0)

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