BIAS TUBES VM220 ARC


I have the VM220 mono blocks by ARC. My problem is that on two pot #v1 and #v2 my millavolt meter reads -17.0 can not get anywhere near 65db's. Can someone please guide me in the right direction.
sjwholesale

Showing 3 responses by sjwholesale

Hi, sorry for the typing error. Yes i am trying to adjust the pots to read 65 mili-volts. all the other pots i can adjust properly only #v1 and #v2 i get weird readings thanks
The tube switch did not work, I still show very low readings. in #v1 on one amp and #v2 on other. How do i know if the bias resister is blown? Where do i get them at? and is it easy to do myself. thanks I thought the tubes might be blown, so I order a set (octet) x2 TUNG-SOL KT 120,should i try them first or just replace the resister?
Bifwynne, thanks for getting back to me and offering some good advise. I talked to calvin right before I got your last message. He thought it might be bad tubes, thats why I ordered the new set of tubes, and he said the KT-120 would work GREAT with my VM-220. He said it would really help my vandersteen wood quatros in the lower end, and mid's.

I am puzzled why he did not bring up the point of a bad Bias resisters as a possible problem, I think he assumed it was the tubes. going to call back and ask him for further help. as well as going about replacing the resister.

What do you have as a phono stage? Just started into the vinyl world and bought the nano(clearaudio) for now but wanted to get a better one and thought about Joule/ Modwright/ ARC advise? thanks

I will get back to you after i talk to Calvin again

Thanks Stacy