VTL stereo 60 bias with KT90

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hi
I bought a second hand VTL stereo60, with no instructions on how to set the Bias. I wrote to VTL, but no response...
I just bought a new set of EI's with minimum bias,they get cherry red, the bias lecture is around 67 mA.
My guess is that with that plate voltage (680) they should run with a bias of around 35 mA, but that is only my guess.
the problem is that the V- supply is not enough to lower the bias to this range.
I tried this tubes on a Jadis amp, and they behave normally (at 45 mA, V+ is around 480).
any ideas ? suggestions ?
regards
alex@rubli.net

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Topic - VTL stereo 60 bias with KT90 - rubli 09:21:49 01/22/04 (1)

Re: VTL stereo 60 bias with KT90 - Bill Way 16:04:39 01/23/04 (0)

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