UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Mullard 5-10 amplifier

Boulevardier · 8th Jul 2019, 4:02 pm

I may have missed the answer to this, but could the OP confirm that the hiss is present with the 5-10's coaxial input socket grounded at the socket itself. If he's just zeroing the pre-amp's volume control to ground the input, then the hiss could be coming in from the pre-amp. That bit of the pre-amp's output circuitry isn't the same as the Mullard 2-valve pre-amp circuit.

Mike

8th Jul 2019, 4:02 pm	#96
Boulevardier Octode Join Date: Sep 2017 Location: Bristol, UK. Posts: 1,658	Re: Mullard 5-10 amplifier I may have missed the answer to this, but could the OP confirm that the hiss is present with the 5-10's coaxial input socket grounded at the socket itself. If he's just zeroing the pre-amp's volume control to ground the input, then the hiss could be coming in from the pre-amp. That bit of the pre-amp's output circuitry isn't the same as the Mullard 2-valve pre-amp circuit. Mike