Super Full Wave Octaver - Audio

[Morocotopo]

Hi gang, I just perfed J.C. Maillet ´s Super full wave octaver, found here:

http://www.lynx.net/~jc/superFullWave.html

And made a little demo:

8va _amp sim test.mp3 - 1.73MB

Neck P90, guitar tone open, FX into soft amp simulator (Orange model at full gain) via mixer. Each lick played first without FX, then with FX.
Works nice, I recently breadboarded a Green ringer, it´s quite similar in function, maybe some subtle differencies in timbre...
I haven´t seen many reports about this one here. Maybe I´m the first to make it (well, really the second, after J.C. himself)?

I don´t know if I´ll dedicate a box to it, maybe incorporate it into a od/dist pedal... don´t know yet.

Thanks J.C.

[Morocotopo]

Cmon, say something!

[Derringer]

sounds like an octave up!

I've toyed with this circuit myself, it gives a very nice picture on the scope

[puretube]

Cmon, say something!

"something"

[John Lyons]

Sounds good, small parts count.
I'm going to monkey with it at some point...

[Cliff Schecht]

The circuit is pretty much a standard full-wave rectifier so I wouldn't expect anything too unusual from it..

[Top Top]

Just an FYI, I tried the other day and wasn't able to listen to it because the site you used to upload it makes you jump through all kinds of hoops to hear it.

Personally I use youtube and just put the sound in the soundtrack to a video. Some folks also use services like soundclick or soundcloud as well. Both are more immediate and don't require you to download anything to listen.

[ddpawel]

Can you post Can you put the layout and PCB files?

[FiveseveN]

Hmm... imput impedance? My opamp math is a little fuzzy this early in the morning.

[Cliff Schecht]

What math is there? There is a 100k resistor going to an AC ground (the decoupled voltage divider) so the audio input impedance is 100k.

[Jaicen_solo]

Isn't that 50K?

[earthtonesaudio]

Power to the op amp is drawn as -9V and GND?  Surely that's supposed to be +9V.

[John Lyons]

I think it's +9v but it got pixilated to look like -9v somehow.
When I printed it out you can see how it was a + but looks like -.

[Morocotopo]

Just an FYI, I tried the other day and wasn't able to listen to it because the site you used to upload it makes you jump through all kinds of hoops to hear it.

Odd, when I click the link it opens a new browser window with windows media player embedded and starts downloading/playing inmediately... all in one click.

Can you post Can you put the layout and PCB files?

There you go:








Note that I added a 100 uF cap for power filtering, a pull down r at the input, and a reverse polarity protection diode. Both electro caps go sideways, that is, the legs should be bent in an "L" shape, so that the caps rest on their side, to reduce the final board height.

[Top Top]

Just an FYI, I tried the other day and wasn't able to listen to it because the site you used to upload it makes you jump through all kinds of hoops to hear it.

Odd, when I click the link it opens a new browser window with windows media player embedded and starts downloading/playing inmediately... all in one click.

It may be because I am on a mac, but it wouldn't actually let me download the MP3 and only would play in a media player which required download of a special/non-standard codec. I am a video editor and have a lot of codecs installed on my computer... it could just be a more PC centric codec.

[slimflash]

Is there a way to listen the sample again ? I can't manage to listen it... 
Thanks