? can an onboard pre be converted to outboard?

[bryanonbass]

so here's the deal.
I got these pickups and electronics from a usa lakland 44-94. Ive been trying to sell or trade them with no luck.
I recently saw a for sale ad for an bartolini ntmb pedal which got me to thinking.
Could I feasibly just put this preamp into a pedal form? I know I would have to add a footswitch and such.
If that is possible can I set it up so that it runs off battery or external power?
here is the box that got my mind wandering:

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[ToneRanger]

Why not? I went the opposite route - my EUB has a Boss FA-1 built in.
The only issue you'd have is achieveing silent switcing if that isn't already part of the preamp. If you just do a hard bypass there'll will probably be louds pops & clunks.
One way to reslove this is to wire som 1 MegOhm resistors from each switch pole to ground - thsis will bleed off any static build-up. However you may need to find some way to switch it electronically for silent operation.

 

[basadam]

Could I feasibly just put this preamp into a pedal form?

With proper tools, parts and skill, yes!

 

[jady]

There is a how to on this floating around somewhere, try a search........

 

[jongor]

Bumping up this old thread to see if anyone else has done this.

I just put a Sadowsky onboard pre into a box but don't want to fire it up until I know it's right.

I'm not sure what to do with 9v power supply ground.

The Sadowsky schematic, and other pedal schematics I've seen online, show it going to the output jack "ring".

Isn't this "ring" the same as the ground that's always used? The ring seems to be in contact with the "ground" portion of the plug.

 

[mburd]

John,

open up any active bass you own and look at the output jack, which willl have 3 terminals.
One is signal, one is signal ground, and the 3rd will short 9v negative to ground when the 1/4 plug is inserted. That's where your ground goes. The 9v+ is always connected. If you have just a standard mono jack there will be no way to switch the power via the negative to ground.
I did this with an Aggie OBP-1 with great results when using my passive basses. You'll like your new box too!.
-mike

 

[jongor]

Thanks Mike,

Another tid-bit I learned by contacting Sadowsky, use a "regulated" power supply to ensure consistent voltage.