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I suspect the harshness you hear is from the 6h30's. call le ... Newbee
Well, a popular line of thinking is that the mkii with 6922s ... Hi_hifi
The vt100mkii is not designed to be used with the 6h30 tube. ... 9rw
You have a wonderful amp. i have owned everything and think ... Evoneill
Thanks for your replies guys, i ... Borg7x9
Just a word of wise. the vt100 mk 2 requires a 2 stage bias ... Dbtrucks
Yes, be careful, the bias scheme for the 6922 is involved. ... Rlips
Thanks again guys. i tried to talk to leornard this morning ... Borg7x9
I am currently using an arc vt100 mkii in my system. the 6h3 ... Gmorris
Myron: please tell us. what did leonard say? 9rw
Hi guys, i managed to talk to leonard who advised t ... Borg7x9
I really like this amp and have heard it sound great in a we ... Mikesinger
Borg i think it is important to note again that the vt100 m ... Gmorris
Still, the previous owner may at some point have used the 6h ... 9rw
Thanks for all your advise guys. just to let you know that ... Borg7x9
Ok just in case anyone is still checking this..............
I warmed up the amp and tested across the resister on the Power valves (130Mv) and was only able to adjust to 98 Mv max on right channell and 122mv max on left channell. they'd both been adjusted to 98 mv.
Adjustment on the input output valves were shot too. I adjusted these to within the tollerances specified (60v on relevant testing points)without any drama's but this didn't influence the output of the power vlves at all.(expecetd)
So I guess the short story is that the guy who sold me the amp fibbed about the recent Valve replacement ( bad bad man ).
So my plan is to ship the amp to the local distributor who will revalve and service My amp. It will end up having cost me 4000 USD in the end. So while I'm a bit negative about the experience overall, if I end up with a smooth, lovely sounding amp I still think I will have done OK.
Thanks all for your time. Any encouraging comments would be appreciated :-).
Borg7x9 (Threads | Answers | This Thread)
Borg: if the input tubes are not properly balanced and adj ... Gmorris
Gmorris, thanks for the info. the guy who gave me th ... Borg7x9
You should also check the 1 ohm resistors r37/r38 and r43/r4 ... Gmorris
Borg,i have a pal with your amp,driving nola(alon)circe's.fa ... sirspeedy70680@
Update.............. more help please. a technician friend ... Borg7x9
Final update............................... every thing tur ... Borg7x9
Borg: i am happy for you. as i had suggested the resistors ... Gmorris
Hi! please help me how can adjustment the bias output tube a ... Keithandy