DIYstompboxes.com

DIY Stompboxes => Building your own stompbox => Topic started by: casey on July 07, 2004, 12:39:40 PM

Title: Here's some old school schems....
Post by: casey on July 07, 2004, 12:39:40 PM
http://img78.photobucket.com/albums/v324/caseyseffectpage/


i've got a bunch of these...if yall are interested.......
Title: Here's some old school schems....
Post by: Tim Escobedo on July 07, 2004, 12:43:42 PM
Password?
Title: Here's some old school schems....
Post by: Leandro on July 07, 2004, 12:43:52 PM
Says it's password-protected...
Title: Here's some old school schems....
Post by: casey on July 07, 2004, 12:49:07 PM
sorry, i didnt know it would ask for a password....

i was thinking we could all put in schems to this archive....

that would be cool.
Title: Here's some old school schems....
Post by: Fret Wire on July 07, 2004, 12:55:09 PM
Casey, instead of giving out your password, all you have to do is set the options so that particular album is public.
Title: Here's some old school schems....
Post by: Arn C. on July 07, 2004, 01:02:43 PM
Casey,

   They are great!  Keep them coming!

Peace!
Arn C.
Title: Here's some old school schems....
Post by: phillip on July 07, 2004, 01:35:51 PM
The tube vibrato looks pretty interesting!

Phillip
Title: Here's some old school schems....
Post by: casey on July 07, 2004, 01:46:47 PM
Quote from: Fret WireCasey, instead of giving out your password, all you have to do is set the options so that particular album is public.

how do i do that?



Ive got more coming....  i was thinking about everyone contributing
different type of schems. for this album....what do yall think?
then maybe turn it into a website later......
Title: Here's some old school schems....
Post by: Fret Wire on July 07, 2004, 02:00:25 PM
After you log in, look right at the top of the page. In small blue letters it says account options. In that, you can choose to make the album public or not. On your main page, you can create more albums. Then you can individually decide which albums you want private and which you want public. Once you get that set, you should change your password, before someone edits your photo's. :cry:

BTW, interesting schematics, thanks for sharing. :D
Title: Here's some old school schems....
Post by: casey on July 07, 2004, 02:22:02 PM
ive got 2 new ones...

a foot controlled wah

and a treble boost....from 1969
Title: Here's some old school schems....
Post by: casey on July 07, 2004, 02:55:10 PM
5 more have been added ......

variable attack delay for guitar

and mods to add distortion to a valve or ss amp....

guitar bass boost

a foot controlled wah

and a treble boost....from 1969
Title: Here's some old school schems....
Post by: casey on July 07, 2004, 03:23:07 PM
since a treble boost was added.....how about a bass boost for guitar...

it's in there now.....
Title: Here's some old school schems....
Post by: puretube on July 07, 2004, 03:24:41 PM
Quote from: phillipThe tube vibrato looks pretty interesting!

Phillip

be aware, that it is what Fender preferred to call "vibrato"... :)
Title: Here's some old school schems....
Post by: casey on July 07, 2004, 03:33:39 PM
ive got a mid boost/control in there now...
Title: are these from marcus
Post by: { antonio } on July 07, 2004, 03:44:34 PM
casey:

are these schems from a book by marcus?  if so which one is it?
Title: Re: are these from marcus
Post by: casey on July 07, 2004, 03:47:49 PM
Quote from: { antonio }casey:

are these schems from a book by marcus?  if so which one is it?

yup....  that's markus.....great books....highly recommended.

Guidebook of electronic circuits....  1974

i believe it's long out of print....  markus still produces this
series..... but this particular one, as you can tell, has alot of
old school schematics....and appears to not be in print
anymore.....
Title: Here's some old school schems....
Post by: casey on July 07, 2004, 04:05:47 PM
got a new fuzz in there......
another one is about to be added.
Title: Here's some old school schems....
Post by: phillip on July 07, 2004, 04:11:46 PM
Quote from: puretubebe aware, that it is what Fender preferred to call "vibrato"... :)

Is that good or bad?  I've never owned a Fender amp with the Vibrato channel before.  My "Evil Twin" has clean, a little drive, and a LOT of drive...but no vibrato.

I once tried a '65 Twin Reverb (reissue), and I couldn't get the "Vibrato" channel to do jack...sounded just like the regular clean channel...unless it was so subtle that I couldn't hear it!  I even had all the intensity controls turned all the way up...strange.  There might have been some switches on the back panel that I missed or something.

Phillip
Title: Here's some old school schems....
Post by: puretube on July 07, 2004, 04:15:11 PM
it`s pure amplitude (volume) modulation - not pitch variation - should be named "tremolo" ...
Title: Here's some old school schems....
Post by: casey on July 07, 2004, 04:18:47 PM
Quote from: puretubeit`s pure amplitude (volume) modulation - not pitch variation - should be named "tremolo" ...

hey puretube....

are you referring to the schem that i posted?

i guess it's like the fuzz, distortion, overdrive, "crunch" syndrome
with these type of circuits.....
Title: Here's some old school schems....
Post by: phillip on July 07, 2004, 04:22:45 PM
Quote from: puretubeit`s pure amplitude (volume) modulation - not pitch variation - should be named "tremolo" ...

Ahh...kinda like how Fender's called the vibrato bridge on the Stratocaster a "tremolo."  I still don't know why I couldn't get that Twin Reverb to do any sort of modulation when plugged into its vibrato channel.

A tube tremolo is pretty cool too.  In my style of playing I haven't found a good use for vibrato, but I do use a tremolo sometimes.  I've tried the EA, the Pulsar, and the Tremulus Lune.  The Tremulus Lune beats the others, hands down :)  You can get square wave, sine wave, and with two diodes and a 3-way toggle switch, you can get ramp up and ramp down.  Hard to beat that!

Phillip
Title: Here's some old school schems....
Post by: puretube on July 07, 2004, 04:29:44 PM
yes, casey - I wouldn`t want to drag a different circuit into your thread...
Title: Here's some old school schems....
Post by: puretube on July 07, 2004, 04:36:35 PM
phillip: the new Pulsar has variable slope: from ramp-up through triangle to ramp-down (besides the pulsewidth-variable square);
its rate goes from 0.2Hz to 40Hz...
Title: Here's some old school schems....
Post by: casey on July 07, 2004, 04:46:08 PM
Quote from: puretubeyes, casey - I wouldn`t want to drag a different circuit into your thread...

if you have any circuits you would like to add to the mix....
i am looking for different - odd circuits that are not commonly
found for a new website......  this photoalbum is the beginnings
of a collection to do just that.....

by the way....

i've got a new leslie/tremelo effect in there now everyone...
Title: Here's some old school schems....
Post by: Marcos - Munky on July 07, 2004, 05:16:25 PM
Thanks a lot for the schematics, they really looks great.
Title: Here's some old school schems....
Post by: Lonestarjohnny on July 07, 2004, 05:51:29 PM
Phillip. there's a pedal that hooks up to a couple of rca jacks in the back, if the pedal is plugged in, you can turn the reverb and tremelo on or off, if the pedal is not hooked the reverb will work, but the tremelo is wired off,
it's like that on all stock S/F-B/F Fender amps, unless it's modified,
JD
Title: Here's some old school schems....
Post by: phillip on July 07, 2004, 06:00:33 PM
Quote from: JDPhillip. there's a pedal that hooks up to a couple of rca jacks in the back, if the pedal is plugged in, you can turn the reverb and tremelo on or off, if the pedal is not hooked the reverb will work, but the tremelo is wired off,
it's like that on all stock S/F-B/F Fender amps, unless it's modified,
JD

D'oh!  No wonder it didn't work.  I was messing around with it in the guitar store where I used to work before I moved, but I didn't take the foot switch out of the little bag and plug it in.

Phillip
Title: Here's some old school schems....
Post by: D Wagner on July 08, 2004, 11:11:17 AM
The guitar bass boost was designed by a S. Daniels.  Could this be Steve Daniels of Small Bear Electronics fame?  (Not to mention the author of many electronics articles and projects.)
Title: Here's some old school schems....
Post by: casey on July 08, 2004, 11:29:13 AM
could be....this is a very old schem....

that would be ultra-cool.  8)