How to bias an HT Club 40 MKII - found the answer
Posted: Fri Oct 18, 2019 1:53 am
I have had this amp for a few weeks and it sounds great. I want to try some different EL34 tubes to see how they sound. I am very used to biasing Marshalls and similar amps, but can't quite understand the MKII.
I do see a couple of adjustment screws with 2 leds net to each. The leds are green and red, both right now are shining the green ones. There is also a 3 prong connector next to the leds. All of this seems like the bias on teh MKII can be set without dropping the chassis - which is a great feature. Unfortunately, I can't find any documentation on how to hook up my meter and what each adjustment screw does.
Any instructions will be appreciated.
Thanks, in advance
*** I meant to add that I dropped the chassis down and looked for a bias pot, but there are none mounted on the board. As I was putting the chassis back in I noticed the cutouts with the adjustment screws and leds.
I do see a couple of adjustment screws with 2 leds net to each. The leds are green and red, both right now are shining the green ones. There is also a 3 prong connector next to the leds. All of this seems like the bias on teh MKII can be set without dropping the chassis - which is a great feature. Unfortunately, I can't find any documentation on how to hook up my meter and what each adjustment screw does.
Any instructions will be appreciated.
Thanks, in advance
*** I meant to add that I dropped the chassis down and looked for a bias pot, but there are none mounted on the board. As I was putting the chassis back in I noticed the cutouts with the adjustment screws and leds.