ampage
Tube Amps / Music Electronics
For current discussions, please visit Music Electronics Forum. New: view Recent Searches.
New: visit Schematic Hell!
The sunn still shines online!

 
Listen to great tunes streaming live right now!

ampage archive

Vintage threads from the first ten years

Search for:  Mode:  

Making the MXR Distortion + Louder


 
12/19/2002 10:17 AM
Hieg
email
Making the MXR Distortion + Louder
Does anyone know how of a mod for the newer style MXR Distortion plus pedals to make them louder?
 
12/19/2002 6:44 PM
griff
email

Replacing the clipping diodes with ones of a higher voltage drop, like LEDs will work.  
Blue will have the highest threshold, and therefore highest volume. (i think..)  
 
Put it onto an 18V supply by using another 9V if you find the pedal becoming less distorted, this will allow the opamp to swing further voltage wise, and make more distortion.  
 
griff
 
 
  Sunday
Book Of The Day The Ultimate Tone, Volume III by Kevin O'Connor
Have you ever wondered if there is a better way to build a Bassman, Champ, Plexi, an 800, AC-30, Bulldog or Portaflex? Or you wanted to build an SVT with off-the-shelf parts? How about a master-volume amp that doesn’t change tone with the master setting? Everything you need to know is right here, including: proper grounding techniques, wiring methods, and mechanical considerations. Eighteen chapters cover the “iconic” amps everyone knows and loves, with schematics and layouts for each, along with the technical history of the product. Eyelet-board and chassis-mounted tube socket construction is used throughout, for easy servicing and modding. TUT3 is very accessible even if you cannot fully read a schematic and is a "must have" if you are going to build an amp for your self.

Note: The Ampage Archive is an Amazon Associate site. A small commission is paid to the site owner on any qualified purchase made after clicking an associate link such as the one above.
 
12/23/2002 9:56 PM
Mark Hammer
email

The schematic for the older stock Dist+ lists the output pot as 10k. In tandem with the 10k fixed resistor in series with it, this provides an annoyingly low output level, even when everything is maxed. Replace the output (if it is currently 10k) with a 50-250k pot (100k is probably good). This will increase the output level.  When combined with the suggested diode switch (2 Si diodes instead of 2 Ge diodes) this will also increase the overall output level.  
 
Please note that switching the diodes will also reduce the amount of clipping available at any given distortion pot position.
 
   Page 1 of 1