Digitech PDS1700 trimpots

ChrisFFTA · Post by **ChrisFFTA** » 24 Nov 2008, 01:27

How does one ascertain which trimpots to tweak? The PDS1700 Chorus Flanger has 4 and I would like to try and get it sounding a little wackier and figured trimpots could be the go

lolbou · Post by **lolbou** » 24 Nov 2008, 12:02

Hi,

I guess that having the schematic is a good thing to start with... Finding it is not always easy, but if you feel confident about it, you can do it yourself by looking at the pcb...

If your effect is only analog, then some of the trimpots will, I think, tweak the gain of the unit, the feedback of the BBD device, the clock adjustment, and the balance between wet and dry...

If it uses a digital component, it might be as well, or not...

Did you try to get teh schematics from Digitech?

ChrisFFTA · Post by **ChrisFFTA** » 24 Nov 2008, 12:48

thx for that... the schems for the old PDS stuff used to be on the digi site but alas no more...

lolbou · Post by **lolbou** » 24 Nov 2008, 13:06

then you have to seek for it...

let me know if any information comes to you!

ChrisFFTA · Post by **ChrisFFTA** » 24 Nov 2008, 13:17

digitech will supply one... for a FEE... and that shit dont rub well with me.

lolbou · Post by **lolbou** » 24 Nov 2008, 18:24

Are the components quite common in it or is there any E.T. stuff?

If the pcb is one-sided and the ICs quite common, you should be able to "read" the schem...

If not, it might be hard...

Anyway, if it works, don't touch it (in an analog or digital device)... Someone tweaked the '79 Electric Mistress I found the other day, and I'm still trying to fix it hoping no IC is damaged...

ChrisFFTA · Post by **ChrisFFTA** » 22 Mar 2009, 04:24

if i post some gut shots would that help at all?

lolbou · Post by **lolbou** » 22 Mar 2009, 13:49

Definitely!!

ChrisFFTA · Post by **ChrisFFTA** » 23 Mar 2009, 13:48

Alrighty... I hope this pic makes it easy enough to pick out the trimpots inside the unit...

ChrisFFTA · Post by **ChrisFFTA** » 08 Apr 2009, 02:10

anyone?