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HT-20 Studio - Changing Tubes & Setting Bias
Posted: Tue Jul 10, 2012 11:04 pm
by teecee90
http://youtu.be/PtvsRn9H29Q
First attempt at a How To video .... let me know what you think.
Re: HT-20 Studio - Changing Tubes & Setting Bias
Posted: Wed Jul 11, 2012 12:47 am
by IM4Tone
EXCELLENT
Do you know what an acceptable, non-harmful range of voltage deviation from the 11.5v might be, as I understand tone variation can be tweaked with the bias?
Re: HT-20 Studio - Changing Tubes & Setting Bias
Posted: Wed Jul 11, 2012 4:28 am
by Markystang
Very nice! Thanks for this!
Re: HT-20 Studio - Changing Tubes & Setting Bias
Posted: Wed Jul 11, 2012 6:22 am
by KKND
Great Vid.....i think you have helped plenty of tone-hungry black star users! However, I am still confused, where did the 11.5 come from? is it across all HT range? what about if I want to put KT 77 instead of EL 34?
Great vid nonetheless, we need an "Ultimate Guide" thread
Re: HT-20 Studio - Changing Tubes & Setting Bias
Posted: Tue Sep 25, 2012 8:01 pm
by fjonasch
Hey folks!
Great video! I noticed that there is a BIAS and a BAL poti on the PCB of the HT Studio 20. The bias is clear, but what does the bal (balance) poti do, and should this be adjusted as well?
Cheers, Felix
Re: HT-20 Studio - Changing Tubes & Setting Bias
Posted: Mon Oct 01, 2012 3:57 pm
by VENTGtr
Included with the specs for the 30W Orange Dual Terror.
Interesting:
"Note: The Orange Dual Terror DT30H amp head does not require rebiasing when replacing power tubes."
Re: HT-20 Studio - Changing Tubes & Setting Bias
Posted: Tue Mar 12, 2019 10:02 pm
by Spykerwolf
Thanks for the video.
Where did you get 11.5V from?