• TalkBass has been independent since 1998. Add your voice.
    Create a free account to reply to discussions, view embedded media, and browse with fewer display ads.
    Join free Log in
    Want zero display ads or expanded classifieds tools? Compare plans.

The Passinwind Open Source Preamp

#361
EMGs will need a 20k blend pot which will be a bit pricy if you buy from them but it'll certainly do exactly what you want to do. I went with Volume-Volume out of simplicity but my next build will use a blend pot.
A stacked Bass/mid control will be the ticket however and I love the mid freq. switch mod. From what I could find, getting a pot that could work as a stacked Freq./Res. setup might not be possible but @Passinwind will know better than I would.
 
#362
Gfkfloyd said:
EMGs will need a 20k blend pot which will be a bit pricy if you buy from them but it'll certainly do exactly what you want to do. I went with Volume-Volume out of simplicity but my next build will use a blend pot.
A stacked Bass/mid control will be the ticket however and I love the mid freq. switch mod. From what I could find, getting a pot that could work as a stacked Freq./Res. setup might not be possible but @Passinwind will know better than I would.
Click to expand...


yeah having trouble finding a 10k/5k. wondering if I could sort of spin my own by soldering in another resistor in parallel...
The EMG piece is ~ $30
 
#363
Loring said:
yeah having trouble finding a 10k/5k. wondering if I could sort of spin my own by soldering in another resistor in parallel...
The EMG piece is ~ $30
Click to expand...
Considering they are dual gang and reverse audio taper, it would be possible but it's functionality would be hindered a bit by adding the resistors. However, trying new approaches is what makes projects like this so fun, maybe get the pots on the BOM and get a set of pots to see if the resistor in parallel will allow you to build the concentric freq/res pot. I'm very interested in seeing how it'll turn out because if it's functionality remains intact, I'd love to add it to my next build.
 
#365
Loring said:
there is a Noll linear I may use for the res/freq. It's 50k linear... Might behave a little better. I will play once I get the BOM... Will start with the mouser BOM (on the way) and play from there.
Click to expand...

Not seeing your link.

Finding a stacked concentric 2 X 2 section pot with different tapers for each section that then also fits in your bass is a very big ask, unfortunately. As I've said upthread, probably the easiest workaround in your situation is:

Vol/Vol, stacked pot

Bass/Mids, stacked pot

LPF Freq, single pot

Resonance on toggle switch

Mid Freq on toggle switch

Noll does sell a few stacked pots with switches on them, but they are not exactly cheap.
 
  • Like
Reactions: svtb15 and Gfkfloyd
#366
sunbeast said:
Man how have I missed this?! Is anyone building these yet? I'd normally take it on myself but my time is quite limited these days!
Click to expand...

I'm hoping that a few of the early adopters here will be at the point of having a few extras to sell pretty soon, which would be fine by me. I'll also be revisiting any commercial possibilities on my end pretty soon, but at this point "pretty soon" probably means around Winter NAMM.
Or_wink.gif
 
  • Like
Reactions: sunbeast and Gfkfloyd
#376
Gfkfloyd said:
Yes they are off when they come from Mouser. Go by the numbers on the Schematic; they're correct.
Click to expand...

I think the problem is that when I buy those parts for other things, Mouser changes the reference numbers on all my BOMs to match. I'll take another shot at fixing that though, thanks for the heads up. I guess if I make a separate Mouser account just for this project that problem would go away. Maybe just clearing my Mouser cookies would do it too.
 
  • Like
Reactions: Gfkfloyd
#378
Souvik said:
I want to build one.Where can i find the PCB.Just checked at oshpark but confused about the version.
Click to expand...

Just use the link in the WIKI, please: Bill Of Materials | TalkBass.com

That should be the only version listed on Oshpark, please link any other ones so I can delete it/them.


......................thanks,
 
  • Like
Reactions: bassbenj and Loring
#380
Souvik said:
Sir....I just want to know that the oshpark version pcb will work without any extra modification?
Click to expand...

Yes, the only caveat is that you will need to use the pot wiring diagram from the WIKI, which uses a different ("backwards") wiring convention from most DIY kits and the like.
 

Latest posts

Top Bottom
Back