Tube Amp Network | Thomas | Activity https://tubeampnetwork.com/members/jackaroe/activity/ Activity feed for Thomas. Thu, 22 Oct 2026 13:39:20 +0000 https://buddypress.org/?v= en-US 30 hourly 2 135b7e99464aad0e9e46ef05760ff1c7 Thomas replied to the topic Voltage readings too low (first build) in the forum 2 Stroke Amplifier Design and Building https://tubeampnetwork.com/forums/topic/voltage-readings-too-low-first-build/#post-8536 Thu, 26 Oct 2023 19:55:40 +0000 Figured it out. The original target values from Daves book expect a 325v power feed. The revised schematic and layout are using 275v, which I adopted. This is why its lower

]]> 0 cb87f61eff8bd7ee71998b559ea8f9c0 Thomas started the topic Voltage readings too low (first build) in the forum 2 Stroke Amplifier Design and Building https://tubeampnetwork.com/forums/topic/voltage-readings-too-low-first-build/ Wed, 25 Oct 2023 23:41:23 +0000 Just finished my two stroke build using a 125ESE and one 12ax7 (thanks to the revised TAN 1.13.2011 revised 1.0 schematic). I checked voltage readings against D.Hunters book and mine are low. Perhaps I should look into smaller PT dropping resistors?

Tube.   Pin.   Expected vdc.   Measured vdc
6v6.        3.       340-360.               332
12ax7.…[Read more]

]]> 0 82dbab7c96b7ba484a993827a776522d Thomas became a registered member https://tubeampnetwork.com/activity/p/4845/ Thu, 12 Oct 2023 01:39:00 +0000 0