[1573] EHX Satisfaction Fuzz

Date: March 24th, 2014 | Comments : [1] | Categories: DIY.

EHX Satisfaction Fuzz

The Electro-Harmonix Satisfaction Fuzz has been rumored to be a Maestro FZ-1 but after looking at a pcb photo that I saw in one of the guitar forums, it appears to be a Jordan Bosstone. The part numbers are even the same as on the Bosstone schematic I found.

You can’t build one for the price EHX is selling it, so I suggest that you go to your favorite online retailer and buy one. Since it uses through-hole parts on some of the important components, you can even do mods on it without too much trouble.

Check out the demo video: http://youtu.be/WD6BzUqqrsQ


[1567] CLM6000 Replacement

Date: March 24th, 2014 | Comments : none | Categories: DIY.

CLM6000 data

Several of the classic Craig Anderton projects used the CLM6000 optocoupler, which has become difficult to find. The question then is what to use as a replacement for it. I downloaded the CLM6000 datasheet and then checked the Silonex datasheets to find a similar part.

It turns out that the NSL-32 opto is almost an exact duplicate. It is so close that it is likely to have been originally developed as an alternate to the CLM photo-resistor. Click on the image above for a full size datasheet comparison.

Small Bear sells the Silonex NSL-32 but be sure to get the basic part, and not one of the revised versions with additional suffixes, such as NSL-32R2. You want the basic NSL-32 if you are looking to use it in place of the CLM6000.


[1563] Tinaja Quest

Date: March 24th, 2014 | Comments : none | Categories: DIY.

While searching for a detail about mosfets today, a search link led me to Don Lancaster’s Hardware Hacker archives. I had not been to his site in a long time, and while much of the computer info is outdated, the basic electronics stuff is still golden.

There is a wealth of info there, so check it out at http://www.tinaja.com/

See if you can find the Marcia Swampfelder archives for the lighter side…


[1553] Little Angel Chorus – NYE

Date: March 19th, 2014 | Comments : none | Categories: DIY.

Little Angel chorus prototype

Over the holidays just a couple of months past, I laid out a pcb for the Little Angel Chorus. After building it, I found that a few changes were needed to get the most out of it with my rig.


[1548] Differential Distortion 2

Date: February 4th, 2014 | Comments : [2] | Categories: DIY.

Differential Fuzz (small)

Ken Willmott published the Differential Distortion design in Popular Electronics, August 1995. He revised the design in 2014 and it is included on the AMZ schematics page with his kind permission. Thanks Ken!


[1541] NPD: EHX Soul Food Overdrive

Date: January 21st, 2014 | Comments : [5] | Categories: DIY.

EHX Soul Food

New Pedal Day! The EHX Soul Food Overdrive.

I spent about 30 minutes looking at the pcb, and as far as I can determine, this pedal does seem to be a Klon Centaur clone. At least it matches the schematics that are posted online, which is my only reference. I couldn’t see the clipping diodes as they are mounted on the back of the pcb, and I did not want to disassemble the pedal.

The box looks to be a zinc casting, and not as sturdy or as finished as the same type enclosure in aluminum. There is also a small switch inside on the 3PDT pcb to change it from true bypass to buffered. Nice touch.


[1537] NPD: Seafoam Chorus

Date: January 18th, 2014 | Comments : none | Categories: DIY.

Seafoam Chorus

New Pedal Day! Keeley Seafoam Chorus

More to come as I get some time to play with it.


[1524] 3PDT switches

Date: November 8th, 2013 | Comments : [6] | Categories: DIY.

3pdt switch types

Here are the Standard 3PDT, Pro 3PDT and Premiere 3PDT switches…



[1515] SOS page uploaded

Date: September 8th, 2013 | Comments : [2] | Categories: DIY.

SOS pcb

I just discovered that the Son-of-Screamer information page had never been uploaded. Yikes!

It is now available online here.


[1508] Voltage Doubler Test

Date: September 7th, 2013 | Comments : none | Categories: DIY.

Voltage Doubler pcb

I decided to do some tests on the voltage doubler kit to see how it compared to the stock circuit from a datasheet.