Whistle Rock Audio ML12 preamp BUILD/HELP thread!

[Bobby Baird]

Well here it is. ML12 PSU Gerbers. I Recommend ordering pcb with 2oz copper traces. This is intended for open source project. Not for commercial use.
5-5-24 Updated BOM and silkscreen on Gerbers to reflect alternate U4. TL783 high voltage regulator adjustable output range of 1.25v to 125v. This part is better suited to supply 48 phantom volts compared to the standard LM317 which only is adjustable from 1.2v to 37v. Instead I recommend using the TI LM317HV which is capable of supplying 1.5 A or more currents over a 1.25-V to 57-V output voltage range. If using TL783 *Omit* D8* & C21*.

 

[Bobby Baird]

Updated silkscreen for " alternate U4" part TL783 high voltage regulator. Corrected BOM. Check above. Note U4 should be the high voltage variant the LM317HV.

 

[ccstudios]

Well here it is. ML12 PSU Gerbers. I Recommend ordering pcb with 2oz copper traces. This is intended for open source project. Not for commercial use.
5-5-24 Updated BOM and silkscreen on Gerbers to reflect alternate U4. TL783 high voltage regulator adjustable output range of 1.25v to 125v. This part is better suited to supply 48 phantom volts compared to the standard LM317 which only is adjustable from 1.2v to 37v. Instead I recommend using the TI LM317HV which is capable of supplying 1.5 A or more currents over a 1.25-V to 57-V output voltage range. If using TL783 *Omit* D8* & C21*.

Dang! Great work! I'm just about a couple months too late as I bought the 2448 PSU kit from five fish.

Btw anyone have a legit source for the BC560C?

 

[Bobby Baird]

Btw anyone have a legit source for the BC560C?

https://www.amplifiedparts.com/products/transistor-bc560-general-purpose-92-case-pnp