audio-talk

jack wrote: ↑Wed Nov 13, 2019 9:33 am Maybe. Maybe not!

Oh yes you may have to look for it.

I realised I hadn't finished this off properly by sharing the completed interior shots, or any decent exterior shots of the amps working. I photographed them this week in the evening after having got a more up-to-date lens for my proper camera, as the light was getting low. It's actually quite tricky capturing glowing valves without them looking pink.

So - left hand amp, exterior:



And its interior wiring:



Right hand amplifier, exterior:



And its interior wiring:



I haven't addressed the oscillation that occurs on one of them if nothing is connected to the inputs yet. However, other than that they have been largely trouble free since they were completed in November. They are used every night, usually for a good 4 hours or so.

I don't think that looks at all shoddy!

Cool...or should that be hot!

Nice shots, & properly shoddy work there !

Thanks all. Hopefully they'll finally make it to Owston in 2021! I'd originally planned to have them there in 2018 but...

2018 - Not ready yet
2019 - Still not ready yet and Owston clashes with trip to Scotland
2020 - Ready, but Covid-19.

Things I still need to do:

Preamp VU meters - as predicted, at most levels there was very little movement most of the time, and now with the Beasts being more sensitive we barely see any movement at all right now. I plan to add a little audio compressor circuit in the line to the meters, which will extend their actual range down to 40dB or maybe even more than that.

Power amps - need to investigate a solution to stop them oscillating with unconnected inputs (I am most grateful for the various solutions that were suggested on this thread). This partly drove my purchase of the Analog Discovery as I wanted to be able to save and compare the results of various tests.

Shoddy