Anyone fancy a DHT preamp project? I have two fully-populated Bartola 'Gyrator' boards and 4x 3A5 NOS valves that I'm realistically never going to get round to building into a preamp. To complete it you'll need a suitable CRC B+ supply and some filament supplies (Coleman or Andrew L's are recommended). There's some info here;
https://www.bartola.co.uk/valves/2016/0 ... h-3a5-dht/
https://www.bartola.co.uk/valves/for-sale/gyrator-pcb/
And there's a build thread here, though the guy gets confused about the biasing approach...
https://www.diyaudio.com/community/thre ... mp.381126/
Yours for £10 plus postage at cost.
If anyone is interested I can take some pictures if it would help.
Project Cull - 3A5 preamp
#1 Project Cull - 3A5 preamp
Sorry, I couldn't resist!
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#2 Re: Project Cull - 3A5 preamp
Too good to leave behind Ray, I'll have them . If you let me know the postage I'll transfer some funds.
Can you remember which bits of sand you used in the gyrators?
Can you remember which bits of sand you used in the gyrators?
#3 Re: Project Cull - 3A5 preamp
Sounds good Simon. I'll find a box and get a postage cost. The Gyrator boards are Rev 5. Picture attached. I'll have a look round as see if I have any other bits and pieces that might be useful.
Ray
Ray
Sorry, I couldn't resist!
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#4 Re: Project Cull - 3A5 preamp
Thanks Ray. Yeah, if there was a BOM or similar from Ale that would be really helpful.
#5 Re: Project Cull - 3A5 preamp
I don't have specific info as I was just referencing Ale's website but I know he's helpful and I'm sure he'll be able to oblige.
Sorry, I couldn't resist!
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#6 Re: Project Cull - 3A5 preamp
Okay no probs
#7 Re: Project Cull - 3A5 preamp
Haven't forgotten you Simon, will aim to pack and post on Saturday morning.
Sorry, I couldn't resist!
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#8 Re: Project Cull - 3A5 preamp
Thanks Ray, no rush