EH Pocket Metal Muff

MB-1 · Post by **MB-1** » 21 Feb 2008, 22:38

Can this be T/B ?? i thought i could just swap out the switch..then i opened it.

teleman · Post by **teleman** » 22 Feb 2008, 03:38

How many lugs are on the switch under the ribbon?

seniorLoco · Post by **seniorLoco** » 22 Feb 2008, 05:15

http://www.ehx.com/instructions/Pocket_ ... ctions.pdf

'in Bypass mode, Ouput jack is connected to the Input jack through a buffer."

ieatyouforbreakfast · Post by **ieatyouforbreakfast** » 22 Feb 2008, 05:58

looks like theirs already a blue 3pdt.

i'm pretty sure all electro harmonix are true bypass as of 2007

allesz · Post by **allesz** » 04 Apr 2011, 17:13

Hallo, I can confirm that the pedal is true bypass. The switch is a 3pdt and, if you take off the battery, the signal pass trough in bypass mode.
I recently opened mine to take some pics of the circuit: a guy in the request folder asked for it. Right now I don't know were the tread has gone, probably I will post here.

keyofnight · Post by **keyofnight** » 06 Jun 2011, 07:19

This pedal looks like a real gem, man. True bypass out of the box?

I play bass, and I'd like to use this pedal more without taking out all of the mids and lows. Are there any mods I can do to give this pedal more life for the bass? I've heard that swapping out the input cap would be great. What else could I change?

allesz · Post by **allesz** » 09 Jun 2011, 15:53

I got some pics.... they are very bad (it can be me or my camera, I suspect me

), hope to be helpful to someone.

I really like this pedal, at first I thought it had too much treble (using it at home) but with the band I find that it just has the ability to cut through.

About modding the thing for bass.... well the idea about the input cap can be a good one; it would be easy if it was not smd, you just can solder a cap in parallel with the existing one (in this way the mod would be easy to undo). being smd I really can't tell.... By the way, which one is the input cap?

keyofnight · Post by **keyofnight** » 17 Jun 2011, 11:25

Damn. I've never cracked mine open. It looks pretty dismal. Thanks for the pictures.

keyofnight · Post by **keyofnight** » 19 Jun 2011, 20:02

You know what, though? Why exactly don't people want to deal with SMD? I mean... all it means is that we use lots of flux and a few different techniques, right?

If I had the schematic, I would give it a shot.

CHEEZOR · Post by **CHEEZOR** » 19 Jun 2011, 22:19

keyofnight wrote:You know what, though? Why exactly don't people want to deal with SMD? I mean... all it means is that we use lots of flux and a few different techniques, right?

If I had the schematic, I would give it a shot.

For me, I don't want to deal with it because I would have to buy a whole bunch of new parts just to try my hand at it.

keyofnight · Post by **keyofnight** » 20 Jun 2011, 04:26

CHEEZOR wrote: For me, I don't want to deal with it because I would have to buy a whole bunch of new parts just to try my hand at it.

I'll try my hand at it. All I need is the schematic. Has anyone got a redrawn schematic of this particular circuit? (Or is it similar enough to the Micro MM or Original MM to get by?)

allesz · Post by **allesz** » 20 Jun 2011, 09:10

Smd components looks difficult to deal with from a diyer point of view.
The pedal works very good though, better than a modern chinese rat for my taste; it has got a lot of basses and with the gain at a minimum it is a good overdrive too.
The last position of the mid switch is really useless (personally I would leave this completely out).
Is there a schemo for the standard metal muff? probably it is the same with just a fixed eq.

keyofnight · Post by **keyofnight** » 25 Jun 2011, 10:08

allesz wrote:Smd components looks difficult to deal with from a diyer point of view.
The pedal works very good though, better than a modern chinese rat for my taste; it has got a lot of basses and with the gain at a minimum it is a good overdrive too. The last position of the mid switch is really useless (personally I would leave this completely out). Is there a schemo for the standard metal muff? probably it is the same with just a fixed eq.

It's not bassy enough for me, but I like what it does with mids (with the scoop turned off).

I'm probably going to swap out C1 with a higher value cap. I'm not good at understanding schematics, so I can't quite tell what else I should replace in the signal path. I'm sure that simple change will make a world of difference. I'll report back with the results.

RnFR · Post by **RnFR** » 25 Jun 2011, 20:04

in a circuit this complicated, simply replacing an input cap could have a lot less effect than compared to something like a 2 transistor fuzz. you have to take all of the following coupling caps into consideration as well. in a fuzz face, you only have input and output caps, so it will have a huge difference. with a TB, you have one more in between the two. I haven't seen this schematic, but I'm sure there are several.

allesz · Post by **allesz** » 27 Jun 2011, 09:30

This is a link to a schemo to start with.
https://www.freestompboxes.org/viewtopic ... 7&start=20
I prefer to spend the damn 40 Euros to buy a factory built one, but it is interesting to look (understand is a big word in my case) how they do it.
Anyway it seems that I should buy a bigger breadboard to try to build this one

.

J_mould · Post by **J_mould** » 07 Mar 2012, 23:03

Does anyone know of a way to mod this pedal to sound more like a regular muff?