Posting Permission

If anyone who wants posting permission on this site please email me mtl.asm@gmail.com and i will add you

thanks

scott.

Friday, July 18, 2008

fuzz face details

Hi

The following may help you complete your fuzz face.

First off as most people know from coming out last week, one of the transistors on the layout sheet is facing the wrong way. It is the p channel fet that was given out on that sunday. the orientation should be rotated 180 degrees. see the photos below.





Next up, germanium orientation. If you look closely at te bottom of the germanium transistors youll see the leads are not really in a straight row. instead they form abit of a triangle.



flip the board so that teh component side is facing you.

rotate the board so that the pots are in what you would consider the "lower right corner".

the input jack should be on the left and output on the right.

now populate the BOTTOM 3 PINS of the socket with germanium transistor such that the MIDDLE LEAD is closest to the RIGHT SIDE off the board. The orientation is the same for both germaniums.



Before the next step you may want to test your pedal to see how you like it. I spent some time with Maria's pedal and found the output was not that high and sort of nasaly sounding. The current gain of the transistors we have is not quite as high as the ones specified. but luckily it is easy to compensate. heres how.

Instead of a fine tuning mod we will use the trim pot as a large gain adjustment. Simply cut the trace from the output cap to the trim pot and solder a wire from the cap to the other side of the trim pot. Look at the photos.



Heres the mod on Maria's. ONLY AD THE YELLOW WIRE. teh other wires were added to replace lifted pads and may not be required. (definitely not required for the "mod")



Now play with the pot until your desired output level is achieved.

IF you still have questions please either make a post or make a comment. if you are confused it is likely other people will be too so it is more useful to ask in a forum accessible by everyone as opposed to through email. THANKS

Sunday, May 11, 2008

workshop #2

workshop #2 is full!

if you have booked a spot, we will be in touch with you soon about payments/details.

thanks!

do not hesitate to ask if you are interested in future workshops (there will be more!) or have any questions, comments, etc...

talk soon.

tyler and scott.

tylerbcrawford atttt gmail dot com

Friday, April 4, 2008

The magical missing diode

HI


the following information is in regards to the last diode which populates the added holes with no traces.

look at the picture



what a mess but it should help . look where it says "hexfuz" backwards. place the end of the diode with the stripe (cathode) into one of the holes with no trace and teh other end (anode) into the unpopulated hole that should be above the "z". if you can make out the semi retarded red diode in the picture it shows correct orientation.

NOW the last wire that you didnt connect on your stomp switch goes into the other hole with no trace (labeled MILB on the diagram). solder the anode (striped end) of the diode to the new wire under the board to simulate a trace. this is depicted in my diagram by a neon green "u" shaped blob.



congratulations thats the end of this procedure.