AMZ overdrive pro "lite" version.....

[MartyMart]

http://aronnelson.com/gallery/Martys-layouts-and-photos/AMZODproLite

I built Jack's "overdrive pro" some while ago and really loved it !
I ended up giving it to the Band I was recording with a few months ago
as the guitarist loved it too ( and they may get famous, so I was "keeping
in with them too ! )
I remember that with my rig, I had the eq pretty much "flat" and liked
the saturation control at "half way" too .......
so here's a version with the "sat" control at mid way point and without the
three band eq section .
Thanks to Jack and AMZ's efforts, its a fantastic little circuit,
it sounds wonderful and rolling back your gtr volume "cleans" up the
sound nicely, lots of gain available from "mild OD" to "shred" !!!

Jack :
If you have a problem with this edited version or see any mistakes/
improvements, then please let me know and I'll correct/take it
off the Gallery right away.

Built and working from that schematic BTW

Enjoy,
Marty.

[elvisjb]

Anyone have a vero layout of the AMZ Overdrive Pro that they could pass along or post? This lite version sounds like an interesting build to add to my project list. Thanks

[dv8]

MartyMart,

looks cool, I have the full version, but I usually leave the eq and saturation knobs set.  Possibly all this can now fit in a 1590B box.

thanks for the input.

-brian

[MartyMart]

MartyMart,

looks cool, I have the full version, but I usually leave the eq and saturation knobs set.  Possibly all this can now fit in a 1590B box.

thanks for the input.

-brian

Thanks , you're welcome
It's quite small and will fit easily into a 1590B.
Adjust the "saturation" pair of resistors to taste, 20k top and 82k to ground was a little less "full on" sounding, perhaps there's room for that
pot on a 1590B ..... Just !!  (16mm)

Marty.

[dv8]

Yeah!

I was thinking of skipping the saturation and the tone stack and going with just the distortion & Volume controls.  Some pedals are nice to have all these tweakable knobs/switches, but most of the time I try to keep it simple.

The original I built I had to put leds for clipping diodes to boost the output, I had originally thought about placing a small booster on the output.  I kept the clipping symmetrical.

So did you achieve unity plus gains without the tonestack?  And did you keep the diodes as 1n914s in the lite without volume concerns?

-brian

[MartyMart]

Yeah!

I was thinking of skipping the saturation and the tone stack and going with just the distortion & Volume controls.  Some pedals are nice to have all these tweakable knobs/switches, but most of the time I try to keep it simple.

The original I built I had to put leds for clipping diodes to boost the output, I had originally thought about placing a small booster on the output.  I kept the clipping symmetrical.

So did you achieve unity plus gains without the tonestack?  And did you keep the diodes as 1n914s in the lite without volume concerns?

-brian

There is "well enough" gain/vol from this, with a 50k output pot !
I guess with the Eq, the original last 2N5088 stage was for volume recovery.
You could keep that final stage, or tap in 4.5v just before that 0.1 output
cap ?
I used 1N4148's for diodes as I dont have any 914's, seem to work well
and are perhaps not as "compressed" sounding, they have a forward
current of 0.7v and I think 914's are 0.4 - 0.5 volts ..?

I'll post a few sound clips tomorrow, so you can check it out OK ?

Marty.

[WGTP]

We seem to be on the same Wave Length.  I drew a similar version, but replaced the first stage with a second op amp stage, since the wiring up of the op amp was already done.  Saves a few parts.