EP booster mod from japanese site, what is it??

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
Post Reply
User avatar
screamersusa
Information
Posts: 44
Joined: 28 Apr 2009, 01:05
Has thanked: 8 times
Been thanked: 2 times

Post by screamersusa »

Wondering what this mod is for.
About to build an ep as a unity only buffer, and another as an actual boost with master vol.

http://blogs.c.yimg.jp/res/blog-80-21/n ... 0325/img_0
Image

User avatar
screamersusa
Information
Posts: 44
Joined: 28 Apr 2009, 01:05
Has thanked: 8 times
Been thanked: 2 times

Post by screamersusa »

I may have answered my own question here....
It looks like it may be a unity gain mod..... if so then how about this:
Put the gain pot on a 3pdt footswitch, replace the last 47k resistor with a 100k resistor
and a 100k pot in parallel, run the wiper of the pot to the 3pdt and switch the boost pot and the
new output pot at the same time? Now it's a buffer and a boost.
This is assuming you always want it on and or want to move the bypass to a regular toggle.
Why didn't xotic think of this? Will there be strange noises switching the gain pot in on the fly?

User avatar
modman
a d m i n
Information
Posts: 4817
Joined: 19 Jun 2007, 16:57
Has thanked: 4287 times
Been thanked: 2008 times

Post by modman »

This is the Eco Booster with Kenny Mod, of course! :wink:
This is the most deranged piece of schematic artwork I've seen coming through here... :scratch:
where's the original blog?
Please, support freestompboxes.org on Patreon for just 1 pcb per year! Or donate directly through PayPal

User avatar
Manfred
Tube Twister
Information
Posts: 1849
Joined: 04 Apr 2009, 23:42
Has thanked: 1597 times
Been thanked: 1301 times

Post by Manfred »

It's a EP booster mod.
Take a look at that link
https://www.freestompboxes.org/viewtopic ... ilit=xotic

User avatar
CHEEZOR
Diode Debunker
Information
Posts: 830
Joined: 10 Jul 2009, 18:19
Location: California
Has thanked: 42 times
Been thanked: 47 times

Post by CHEEZOR »

That image is burning my retinas.

User avatar
fuzzfiend
Information
Posts: 36
Joined: 03 Jul 2011, 14:48
Location: Southwestern USA
Has thanked: 14 times
Been thanked: 17 times

Post by fuzzfiend »

Is that finger paint? I can't tell if I love it or hate it, but I'm sure I feel strongly about it.
Q: How many bluegrass musicians does it take to change a light bulb?
A: Three. One to change the bulb and two to complain that it's electric.

User avatar
screamersusa
Information
Posts: 44
Joined: 28 Apr 2009, 01:05
Has thanked: 8 times
Been thanked: 2 times

Post by screamersusa »

Here's where I found it via google images under EP booster mod.
http://blogs.yahoo.co.jp/noisyken/65000325.html
Hope you can read japanese cuz I havent figured it out after going
through the ep booster pages on here twice.

Post Reply