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Traynor Monoblock II preamp pedal

PostPosted: 28 Jul 2016, 20:31
by johnk
I just finished building a pedal version of the Traynor Monoblock II preamp. I used the factory schematic and followed it exactly for this build. the original preamp runs on a bipolar 15 volt supply so I added a bipolar charge pump to enable the pedal to run off a standard 9 volt power supply capable of at least 60ma.

here's a pic of the completed pedal in an etched 1590BB with all top jacks and a relayed true bypass:

Image

gut shot:

Image

and here's a soundclip of it with a P bass thru my 215 cab:

https://soundcloud.com/johnk_10/monoblockii

Re: Traynor Monoblock II preamp pedal

PostPosted: 28 Jul 2016, 20:33
by johnk
here's the PCB layout for it:
http://johnkvintageguitars.homestead.co ... allest.png

and the trace for etching (print at 800dpi!):
http://johnkvintageguitars.homestead.co ... allest.jpg

Re: Traynor Monoblock II preamp pedal

PostPosted: 28 Jul 2016, 20:48
by 287m
AWESOME as always Johnk! :applause:

errr, where the scheme Johnk?

Re: Traynor Monoblock II preamp pedal

PostPosted: 29 Jul 2016, 06:33
by johnk
Image

Re: Traynor Monoblock II preamp pedal

PostPosted: 02 Jan 2017, 03:28
by sonicblaze
Any chance you have a full list of parts (quantities of resistors/diodes/etc) before I go create my own BOM off Mouser?

Also, whats the black PCB board in the bottom right corner of your picture? Is that the input/output relay you spoke of?

Re: Traynor Monoblock II preamp pedal

PostPosted: 08 Jan 2017, 11:05
by stringsthings
This looks and sounds really cool. It would be nice to take a break from the guitar projects and do one for the bass.