Quad 303 quandary - Page 2 - UK Vintage Radio Repair and Restoration Discussion Forum

Craig Sawyers · 17th Feb 2022, 10:00 am

Good summary!

Baxandall on the regulated supply on the 303 "The use of a regulated supply (for the 303) was my contribution, and had nothing whatever to do with any notion that it might be "sonically superior". It was done purely because in 1967 we were all scared of busting power transistors!"

From a long letter to Douglas Self.

Craig

mikes08 · 22nd May 2022, 9:13 am

Bit the bullet in the end and have now upgraded with Dada kit and just running it in now and will then check the voltages again. I had to wait until they re-stocked anyway. That is all three of my 303's done now but looking back the first one i did was eleven years ago.

lesmw0sec · 22nd May 2022, 10:27 am

Hmm. Have been using a 303 for donkey's years in the course of which I had to replace a noisy front end transistor and leaky electrolytic. I have no intention of modifying it as it still manages perfect reproduction through a pair of Tannoy 15" speakers.

17th Feb 2022, 10:00 am	#21
Craig Sawyers Dekatron Join Date: Nov 2010 Location: Oxford, UK. Posts: 4,992	Re: Quad 303 quandary Good summary! Baxandall on the regulated supply on the 303 "The use of a regulated supply (for the 303) was my contribution, and had nothing whatever to do with any notion that it might be "sonically superior". It was done purely because in 1967 we were all scared of busting power transistors!" From a long letter to Douglas Self. Craig __________________ Doomed for a certain term to walk the night

22nd May 2022, 9:13 am	#22
mikes08 Pentode Join Date: Dec 2021 Location: Canterbury, Kent, UK. Posts: 135	Re: Quad 303 quandary Bit the bullet in the end and have now upgraded with Dada kit and just running it in now and will then check the voltages again. I had to wait until they re-stocked anyway. That is all three of my 303's done now but looking back the first one i did was eleven years ago.

22nd May 2022, 10:27 am	#23
lesmw0sec Octode Join Date: Jul 2009 Location: Carmel, Llannerchymedd, Anglesey, UK. Posts: 1,509	Re: Quad 303 quandary Hmm. Have been using a 303 for donkey's years in the course of which I had to replace a noisy front end transistor and leaky electrolytic. I have no intention of modifying it as it still manages perfect reproduction through a pair of Tannoy 15" speakers.