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ad30 and balanced pre amps for the phase invertors
Posted: Wed Aug 28, 2013 8:02 am
by Ronnie Robinson
I understand the Ad30 has 2 preamps for the 2 phase inverters. Do these tubes need to be balancsed? I have 4 ecc83s only one is balanced
Re: ad30 and balanced pre amps for the phase invertors
Posted: Wed Aug 28, 2013 8:34 am
by irish_admiral
Twin channel, I guess you mean?
No, the valves don't need to be balanced either way. Just shove in whatever sounds best. It's a bit of a fudge by sellers to tell you that they do.
Re: ad30 and balanced pre amps for the phase invertors
Posted: Wed Aug 28, 2013 9:32 am
by a.hun
Exactly right - just trust your ears!
While the people selling valves make it sound convincing in 99.9% of guitar amps there is actually
zero benefit to using 'self matched' valves for the PI slot. Unless you happen to have something like a 200W Marshall Major or 200 / 400W Hiwatt you can safely ignore them!
http://www.thegearpage.net/board/showth ... p?t=262694" onclick="window.open(this.href);return false;
Andy.
Re: ad30 and balanced pre amps for the phase invertors
Posted: Wed Aug 28, 2013 11:35 am
by Ronnie Robinson
Nice one, cheers guys