When they are packed, sent to the fufillment company, received and staged by them, and then set for sale by managment.
One of these days, hopefully.
One of these days, hopefully.
It’s a small PCB and all the actives are in-production. This one will be cheap, cheerful, and available.
🙂
🙂
Works beautifully in my little test chassis. Note the LED+resistor hack to shine light through the vent holes to show power.
Will hook up to follower amplifier (in this case, MoFo) tomorrow and see what it can really do.
🙂
EDIT: The photo has been removed because I connected it quite incorrectly and don’t want to have it as an example. Will replace with updated soon.
Will hook up to follower amplifier (in this case, MoFo) tomorrow and see what it can really do.
🙂
EDIT: The photo has been removed because I connected it quite incorrectly and don’t want to have it as an example. Will replace with updated soon.
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Hello Frontend2022 - builders,
I have started my boards today. All is fine so far.
The symmetrical PSU is adjusted to +- 20 V DC. It was easy to adjust the output -offset (between R5 and C3) below 1mV.
After a while of warming up, I could adjust this 'nice baby' to below 0,5 mV offset.
I think I will add some RCAs and should have a listen this night? No hurry - patience is your friend...
Cheers
Dirk 😉
I have started my boards today. All is fine so far.
The symmetrical PSU is adjusted to +- 20 V DC. It was easy to adjust the output -offset (between R5 and C3) below 1mV.
After a while of warming up, I could adjust this 'nice baby' to below 0,5 mV offset.
I think I will add some RCAs and should have a listen this night? No hurry - patience is your friend...
Cheers
Dirk 😉
Attachments
Looking good, Dirk, well done!
After some proper burn in and listening please share your impressions as ever 🙂
MFG
Claude
After some proper burn in and listening please share your impressions as ever 🙂
MFG
Claude
For sure Jim will reply himself much better than me...
Meanwhile you may want to look at Grayhill rotary switches, they are indeed very small and well build... Jim recommended them once for my B1K build... avail at Mouser's etc.
I love the way Jim bounded the cables just in front of the switch as that can save you IMHO a lot of hassle with these tiny parts if using them for prototypes... I wish I were so clever and clean builder as Jim!
Have fun
Claude
Meanwhile you may want to look at Grayhill rotary switches, they are indeed very small and well build... Jim recommended them once for my B1K build... avail at Mouser's etc.
I love the way Jim bounded the cables just in front of the switch as that can save you IMHO a lot of hassle with these tiny parts if using them for prototypes... I wish I were so clever and clean builder as Jim!
Have fun
Claude
The 3.3uF WIMA's in Pa's BOM (here) are non-stock at Mouser - in fact their part number isn't even 'Assigned' so the WIMA's must clearly be from the authentic OPL Non-Disposable Facility. However, Digikey have one or two that might fit - lead spacing appears to be the same 10mm on both.
@grataku https://diyaudiostore.com/collectio...s-dc-filter-p089zb-kit?variant=39297638465609. They will be in stock again very soon. Pot is 50K, but the preamp circuit doesn’t care what the pot value is, you sources do. If you are not sure, 50K is the safe value. If all your sources are non-tube output, you could use a 10K or a 25K.
@manniraj As our esteemed @ClaudeG surmised, it is a Grayhill.
@manniraj As our esteemed @ClaudeG surmised, it is a Grayhill.
Thanks guys. This maybe off topic but Nelson mentions the soft turn on/off circuit during his BAF 22 talk. Is that circuit available somewhere?
@grataku That filter is here - https://www.diyaudio.com/community/...-filter-and-thump-switch.392552/#post-7232597
Yes, will be in the store at some point as well. 🙂
Yes, will be in the store at some point as well. 🙂