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:  

MXR Dyna Comp


 
7/25/1999 11:59 AM
TeleTubby
email
MXR Dyna Comp
Hey where is everybody?  
 
If anyone is out there, I have a question about installing a DPDT footswitch in my MXR Dyna Comp. It seems to suck a little tone even when the effect is off. I have the DPDT switch, there seems to be plenty of room for it, and the wiring seems straight forward- are there any hidden challenges I should know about? Has anyone done this before? Also, has anyone done any experimenting with installing carbon composition capacitors to make it sound more like the script edition Dyna Comps? Thanks in advance.
 
8/2/1999 5:48 PM
GRTeese
Website
email

Hey there. I think most peope abandoned this site when it was down for so long. Hope they didn't drop the link...  
 
Anyway, check out the TECH TIPS portion of www.fulltone.com  
Michael has a very straihtforward explanation (pictorial) for installing DPDT switches.  
 
Your best bet for returning your reissue(?) to vintage specs would start with a schematic and finding out what Dunlop changed and undoing it.  
 
Good luck-Geoffrey
 
 
  Tuesday
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.
 
8/6/1999 10:12 AM
TeleTubby
email

Thanks Geoffrey,  
 
It looks like we are the only two here!  
 
I have one of each (script, block, and reissue) and have been comparing them. The script and block versions have identical pcbs- all component values are the same, but, visually, it appears that they changed manufacturers or suppliers, probably for cost benefits! Isn't that the driving force in most applications (your wahs being one of the few exceptions)? The reissue is a whole other ballgame- I have schematics for the originals, but have not found any for the new version. So I may experiment with exchanging caps and resistors and just see what happens!  
 
Thanks for your help with my wah a couple of months ago. I think the last time I e-mailed you I was having the problem with the volume oscillations when it was AC powered- got it figured out and now it smokes (figuratively, not literally!). Still want to get one of your inductors installed, though! And what would your "tropical fish" capacitors sound like? I guess the fun never ends, does it?  
 
Thanks again for all your time,  
Randy Erickson (TeleTubby)
 
   Page 1 of 1