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September 30, 2020, 08:21:53 PM

Author Topic: KregB voltage slightly high (6.8V)  (Read 187 times)

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Offline dthong

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KregB voltage slightly high (6.8V)
« on: December 01, 2019, 10:03:13 PM »
Hi there

I'm seeing the KregB voltage reading as 6.8V (vs. 3-6V range). Is this OK? KregA is 5.3V.

The amp sounds fine.

All resistance checks are fine and other voltage readings are OK. I've gone over the Low Current C4S wiring. All LEDs light up.

Low C4S
IA - 148V
OA - 77V
KregA - 5.3V
bRegA - 148V
IB - 149V
OB - 79V
KregB - 6.8V
bRegB - 148V

High C4S
IA 192/192
OA 148/149
bA 0/0
IB 0/0
OB 97/98
bB 148/149

Tip - 45mV
Ring - 50mV


« Last Edit: December 01, 2019, 10:17:13 PM by dthong »

Offline Paul Birkeland

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Re: KregB voltage slightly high (6.8V)
« Reply #1 on: December 02, 2019, 05:27:18 AM »
Yes, that's OK.  If the amp is new, you may find that with some time that particular voltage will drop a bit as the 6AQ5s cook in.

-PB
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man