Paul Barker wrote: ↑Fri Mar 15, 2024 6:41 pm
Oh pooh, really sorry to have to tell you this, honest I wasn’t copying you. I adjusted b+ in my amp to get g2A 425v the bias on the cathode 39v 48 mA. 21 watts dissipation. Totally better by a mile than the 6550.Diana just nuck up on me, I nearly jumped out my skin. “Gosh its sounds really……significant.”
So its now a EL34 Triode amp.
Vade mecum says 2nd 8% power 6 watt. It has come alive. EL34 transes the 6550.
I love the EL34.
Sgt. Baker started talkin’ with a Bullhorn in his hand.
I was going to stop at around 4:00 today, but after tea, Melanie decided she was going to watch a recording of, "Celebrity Big Brother Live and Late!"
I didn't need much encouragement to leave the room, go upstairs and continue with the build. Got the power supply wired up and the OPTs connected to the output valve sockets:
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Now that's definitely it for today.
Sgt. Baker started talkin’ with a Bullhorn in his hand.
Thanks chaps.
Amp is finished. Last two jobs were to cable the input sockets to the selector switch and to put a reinforcing piece of anodised aluminium L section along the bottom edge of the rear panel, to match the one at the front:
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Sgt. Baker started talkin’ with a Bullhorn in his hand.
It’s back in the system after the cosmetic facelift and power supply upgrade.
Sounds great with the LCRCRC supply. Glad I searched out the 450V transformer, despite the head scratching over the primary phasing.
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Sgt. Baker started talkin’ with a Bullhorn in his hand.
