Dirtbag DLX3 PCB LAYOUT

[hukenny]

Hello,

I'm looking for the Dirtbag DLX3 PCB LAYOUT (Deluxe Memory man EH), and the circuit schematic too.

Anyone can help me?

BR.

Hukenny

[pickdropper]

I don't think that PCB has been released yet.

If you are looking for an etched layout, Brian will have to chime in on whether or not there will even be one.  I don't think he made one for the first Dirtbag Deluxe.

[hukenny]

Thank you,

the .JPG layout it will be ok.

I'll make the pcb by myself.

I'm looking for the schematic too, anyone can link it to me?

[madbean]

The schematic will be available when the project is released. There won't be an etchable layout for it, unfortunately.

[handlefras]

Brian, are you able to make any comment on the changes to the future DLX3 layout vs the older Dirtbag design? I have built the Dirtbag on your pcb with 4x MN3008s @ 15V but when A/Bing it to my big box DMM have never really got it as close as i would like. This could be to do with biasing or any number of other issues, but I'm wondering if you have any suggested mods that I could try now, before the DLX3 project release? Mostly, I'm concerned with the repeats distorting (almost pitch shifting) quite badly after about the third repeat.

Should I just bypass the Road Rage and run this thing @ 18V to achieve more headroom?

Thanks

[mattlee0037]

You can run part of the circuit at 18v but I believe there is a regulator to capthevoltage at 15 as that is as high as the BBDs will operate at

[handlefras]

Yeah, you're right, in the DMM schem there is a regulator. No point going above 15V then. But does it make a difference if you are below 15V? My Road Rage is supplying 14.8V at the moment.

On another note, does anyone know if you can bias the BBDs with a multimeter (no scope here) i.e measure the voltage on input and output pins and bias both BBDs so these voltages are equal? Or am I talking rubbish here?

[Scruffie]

Yeah, you're right, in the DMM schem there is a regulator. No point going above 15V then. But does it make a difference if you are below 15V? My Road Rage is supplying 14.8V at the moment.

On another note, does anyone know if you can bias the BBDs with a multimeter (no scope here) i.e measure the voltage on input and output pins and bias both BBDs so these voltages are equal? Or am I talking rubbish here?

Don't work that way, every BBD has an individual optimal bias point, voltage will only get you in a ball park.

Use an audio probe instead.