Strange distortion on Music Angel Amp. - Page 3 - UK Vintage Radio Repair and Restoration Discussion Forum

Diabolical Artificer · 21st Nov 2021, 1:04 pm

I agree a DC coupled LTP isn't optimum, the ECC85 isn't the best choice either. The whole amp is a bit weird, why not just make a Mullard 5-20 or Williamson clone? If you get rid of the DC coupling and pop a 6SN7 in place of the 6SL7 I think you'll see a big improvement. Driving it with a front end of the Leak is a good idea as a start.

Subbing a 6SN7 in place of the 6SL7 with the circuit as is won't work, different biasing.

I'd love to get my hands on this amp for a hour or two,hope you get it working, tother Andy.

21st Nov 2021, 1:04 pm	#41
Diabolical Artificer Dekatron Join Date: Jul 2009 Location: Sleaford, Lincs. UK. Posts: 7,669	Re: Strange distortion on Music Angel Amp. I agree a DC coupled LTP isn't optimum, the ECC85 isn't the best choice either. The whole amp is a bit weird, why not just make a Mullard 5-20 or Williamson clone? If you get rid of the DC coupling and pop a 6SN7 in place of the 6SL7 I think you'll see a big improvement. Driving it with a front end of the Leak is a good idea as a start. Subbing a 6SN7 in place of the 6SL7 with the circuit as is won't work, different biasing. I'd love to get my hands on this amp for a hour or two,hope you get it working, tother Andy. __________________ Curiosity hasn't killed this cat...so far.