Mullard 3 watt amp - gobsmacked ! - Page 2 - UK Vintage Radio Repair and Restoration Discussion Forum

Aerodyne · 5th Dec 2010, 5:36 pm

The stereo amp I've built was based upon the Mullard 3-3 as shown in the Mullard 'Circuits for Audio Amplifiers', published 1959. The component differences between this later book and the earlier Radio Constructor article are quite marked; it will be interesting to try out these differing values and note what, if anything, the outcome is. When I can find the time, that is!
-Tony

G4PCE Rich · 4th Jan 2011, 10:15 pm

Nice pics.
I have a Sterns Mullard 10+10 amp in the cupboard and the original construction sheets somewhere. Looking at your 3 watt one has stirred me into firing mine up. I think it had a little residual hum which might be reduced with a bit of extra smoothing, but otherwise was nice. It has a GZ34 rectifier I think, and had a ECC83 input mod replacing the EF86s

5th Dec 2010, 5:36 pm	#21
Aerodyne Octode Join Date: Jun 2004 Location: Hampton Vale, Peterborough, UK. Posts: 1,698	Re: Mullard 3 watt amp - gobsmacked ! The stereo amp I've built was based upon the Mullard 3-3 as shown in the Mullard 'Circuits for Audio Amplifiers', published 1959. The component differences between this later book and the earlier Radio Constructor article are quite marked; it will be interesting to try out these differing values and note what, if anything, the outcome is. When I can find the time, that is! -Tony

4th Jan 2011, 10:15 pm	#22
G4PCE Rich Retired Dormant Member Join Date: Jan 2011 Location: Solihull, West Midlands, UK. Posts: 5	Re: Mullard 3 watt amp - gobsmacked ! Nice pics. I have a Sterns Mullard 10+10 amp in the cupboard and the original construction sheets somewhere. Looking at your 3 watt one has stirred me into firing mine up. I think it had a little residual hum which might be reduced with a bit of extra smoothing, but otherwise was nice. It has a GZ34 rectifier I think, and had a ECC83 input mod replacing the EF86s