an easy octave UP schem?

[cedric]

i'm looking to build an easy octave UP for a bass player-friend of mine.
no clean signal would be necesary,- just the octave up.

any ideas?

- ced

[Mark Hammer]

Tim Escobedo's Oct-Up looks good.  Haven't finished wiring mine up so I can't offer a build/performance report.

[petemoore]

Take a Tycho Octaviaschematic and build just the last part the transformer and diodes [haven't tried this] and tack that on to the output of a Fuzz with lotta output.
 Scott Schwartz has a thing called an Octave Screamer..sort of  a TS meets Tychobrahe affair.
 I haven't tried it but the RM Octavia has been commented on by those who have.
   The Foxx Tone Machine I did try and it gets thick Octave/Fuzz very direct sounding [IMO] less ringy.

[moosapotamus]

Green Ringer?
... with a gain stage in front of it (i.e. stratoblaster, lbp-1 or 2, minibooster...).

Audio clip: here

~ Charlie

[Marcos - Munky]

Buzz Box. See Runoffgroove's Bazz Fuss page.

[Tim Escobedo]

I have several circuits that do some kind of octave up. Never tried any with bass. Forum member Rocket also had a simple two transistor octave up design, but I can't find his site right now. IIRC, it was a two transistor phase splitter, output of each transistor going through  a diode to a summing point, which forms the output.

[Ammscray]

By far the easiest to build and one of the best sounding octave-up pedals is Gus' simple octave up...it sounds very much like a FTM and you can build it it 15 minutes! Much better IMO than the octave screamer and bobtavia, which have a much weaker octave...tracks great with guitar or bass...

build it you won't be sorry...it's my fav GUS scheme...

[Arn C.]

This one?     http://www.diystompboxes.com/pedals/SOU2.GIF

Not sure if I got the URL posting correct.

If this is the one, what transformer coud be used?
Mouser part#?

Thanks!
Arn C.[/url]

[petemoore]

I have both the Mouser part [like for the Tycho] and the RS transformers [Like Bobtavia uses].
 What did you use for the Gus's Simple Octave UP?
 I know this has been covered...the difference between Ring Mod and Octave, but is there a way to mod an octave [I have a FTM and a Tycho] to have more of ring mod sound/less octave?

[Ammscray]

I've used both the RS and Mouser trannys (can't remember the M part number) with equal results...there's actually several M ones that all work great...

 I don't know about the ring mod thing but I would never want to lessen the octave sound that's kind of defeating the whole purpose for me...I like real strong octave-up!

Just build a green ringer...

[nightingale]

tims rambler~
that thing is very underrated IMO.
best,
~ryanS

[Marcos - Munky]

I have a schematic here that say 273-1380 transformer in RadioShack. I think a Mouser TL002 do the job.