Ear 8l6

AchimD · 12th April 2007, 11:17 AM

Hi all,

I am using an EAR 8L6 power amplifier, schematic as attached.

Can somebody explain me the function of the serial 2 x 100pF capacitors between feedback and anode of the power tubes?
Is it an improvement of the slew rate?

thx & rgds,
Achim

SY · 12th April 2007, 11:26 AM

I've deleted the schematic- it's got a copyright notice on it so TdP's permission is needed to post it.

The function of those caps (really, it's the equivalent of a single 50pF cap) is to compensate for the inevitable HF unbalance between halves of the output transformer primary. That's a pretty low value, so presumably, the output transformer is a very good one in that respect.

12th April 2007, 11:17 AM	#1
AchimD diyAudio Member Join Date: Jun 2006	Ear 8l6 Hi all, I am using an EAR 8L6 power amplifier, schematic as attached. Can somebody explain me the function of the serial 2 x 100pF capacitors between feedback and anode of the power tubes? Is it an improvement of the slew rate? thx & rgds, Achim

12th April 2007, 11:26 AM	#2
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	I've deleted the schematic- it's got a copyright notice on it so TdP's permission is needed to post it. The function of those caps (really, it's the equivalent of a single 50pF cap) is to compensate for the inevitable HF unbalance between halves of the output transformer primary. That's a pretty low value, so presumably, the output transformer is a very good one in that respect. __________________ “Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache

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