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Dual Bias Layout for DR103
Posted: Sun Sep 15, 2013 2:03 pm
by Univibe65
I was thinking about a smart way to install the dual bias circuit in my DR103 without any major changes or an additional board - and had this idea here:
The pots will be mounted in the spare holes of the chassis (preamp-tubes).
What do you think. Is it alright?
Re: Dual Bias Layout for DR103
Posted: Sun Sep 15, 2013 5:31 pm
by mhuss
Looks good to me.
--mark
Re: Dual Bias Layout for DR103
Posted: Wed Sep 18, 2013 3:03 am
by Univibe65
OK - it's 4:40 am now and I'm done.
Now the amp is almost ready - dual bias, new caps, input section rewired and mains plug installed.
Caps still need to be formed and I have to order some Imperial 2BA's from the UK.
I can't wait to play this thing live.
Thanks for your help, Mark.
One more thing - I recognized that the (replaced) Master Volume pot has 500k instead of 250k. Does that hurt?
Martin
Re: Dual Bias Layout for DR103
Posted: Wed Sep 18, 2013 3:52 am
by mhuss
Nah, that shouldn't make a big difference.
--mark