I'm a Korean, live in seoul South Korea, and like DIY of audio amps.
I have a 300B SE power amp, which was DIYed by me past.
Recent days, I made its B+ down to 320 volts for tubes' life.
However, it causes two channels to be unbalanced.
A right channel has a triple greater output level than left.
What can I do for the balanced operation of the power amp?
Thanks..
my Email: gokhl@dreamwiz.com
I have a 300B SE power amp, which was DIYed by me past.
Recent days, I made its B+ down to 320 volts for tubes' life.
However, it causes two channels to be unbalanced.
A right channel has a triple greater output level than left.
What can I do for the balanced operation of the power amp?
Thanks..
my Email: gokhl@dreamwiz.com
Hi Gokhl, welcome to the forum.
I'm not clear about the channel imbalance:
Do you mean that when 1 channel is outputting 1 volt, the other is outputting 3 volts? That's a 12dB imbalance!
What was the original +B voltage?
If the amp uses manual bias, you will have to adjust this.
Cheers,
I'm not clear about the channel imbalance:
Do you mean that when 1 channel is outputting 1 volt, the other is outputting 3 volts? That's a 12dB imbalance!
What was the original +B voltage?
If the amp uses manual bias, you will have to adjust this.
Cheers,
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