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zentropa
Gold Member

USA
837 Posts

Posted - 05/23/2008 :  04:56:00  Show Profile  Send zentropa an AOL message  Reply with Quote
Was curious if anyone knew of any freebie/published mods for the Metal Zone. i just stepped a friend through his first pedal mod and he's "addicted" to it now and wants to mod out everything he owns. his next pedal to do is an MT-2.

ChristoMephisto
Platinum Member

Canada
1288 Posts

Posted - 05/23/2008 :  11:04:45  Show Profile  Reply with Quote
Pedal modding can be addictive
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mojah63
Copper Member

USA
10 Posts

Posted - 05/25/2008 :  19:02:43  Show Profile  Reply with Quote
Here's a few mods for the mt-2:

K*EL*Y MOD (+Clarity) -

C37, C39, C17, C11 - Change to 1uf
C9, C42 - Change to .1uf
C20, C8 - Change to .22uf

MIDRANGE MOD (Removes annoying midrange) -

C35, C25 - Remove
C34 - Change to .047uf

Other -

C42 - Fattens distortion (+.1uf)
C36 - Midrange Sifter (.022-.1uf)
R46 - Increasing will reduce pre-distortion mids boost
R41 - Lowering will increase distortion (470 ohms recmd.)
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pedals 4 pv
Platinum Member

Canada
1351 Posts

Posted - 05/25/2008 :  19:11:51  Show Profile  Reply with Quote
hi mojah63 thanks for the info and welcome to the forum.
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zentropa
Gold Member

USA
837 Posts

Posted - 05/25/2008 :  19:34:52  Show Profile  Send zentropa an AOL message  Reply with Quote
thanks a bunch :)

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ChristoMephisto
Platinum Member

Canada
1288 Posts

Posted - 05/25/2008 :  23:41:10  Show Profile  Reply with Quote
Lets more to the fray..

Mt-2 �Dieznerr� mod

Location Stock value Mod value
c35 .01 uf Remove
C34 .027 uf .047uf
C25 .01 uf remove Removes nasally mids
C42 .047 uf .1 uf
D3 1n4148 led
D4 1n4148 1n4001
C36 .022 uf .1 uf
Gives the eq a huge range �many more tones available!!


Mt-2 �JCM-boogie� mod *
Location Mod value
c35 Remove
C34 .047 uf
C25 remove
C36 1 uf Gives the eq a huge range
D3 led
D4 1n4001

Options
R46 - Increasing will reduce pre-distortion mids boost
R41 - Lowering will increase distortion (470 ohms or so will sound good)

Sold my MT2 before I got into modding...
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mojah63
Copper Member

USA
10 Posts

Posted - 05/26/2008 :  01:11:11  Show Profile  Reply with Quote
Thanks guys :) I did the monte alums mod to my mt-2 and didn't like
it much. He replaces the clipping diodes with red leds and does a few
of the the keely mods but not all. The Burr Brown opamp monte uses OPA2134PA is no big deal either.. This week I'm going back in . I'm planning on putting back the honky mids and just concentrate on getting more low end out of the pedal maybe try and widing the q of the midrange. I've already put the stock clippers back in. I'm not a big fan of led's and 1n34's are for mxr dist+'s YMMV
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zentropa
Gold Member

USA
837 Posts

Posted - 05/26/2008 :  01:30:49  Show Profile  Send zentropa an AOL message  Reply with Quote
thanks again. these were some that i was looking for.

does the boogie mod stack well w/ the clarity mod?


Edited by - zentropa on 05/26/2008 01:31:10
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zentropa
Gold Member

USA
837 Posts

Posted - 05/27/2008 :  08:12:32  Show Profile  Send zentropa an AOL message  Reply with Quote
i put the boogie mod in today.

i like it better than stock but still isn't like "omg this is the best thing since toilet paper" like i'm hoping to find from a mod.

i probably shoulda tried it w/ the LED + 1n4148 before i popped the 1n4001 in there.

i'm waiting on more caps (that i ordered like 4 weeks ago...) to arrive so i can finish up w/ the clarity mods.



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mojah63
Copper Member

USA
10 Posts

Posted - 05/27/2008 :  16:29:26  Show Profile  Reply with Quote
Mods are funny things... They can be so different sounding
depending on amps and guitars used. My stock mt-2 sounds
great through a dark amp but through a honky combo the mids
are way too sharp. I try to put in line mill sockets in place
of the components I want to replace. That way I don't have
to unsolder then resolder the stock or other value components
if you want to change them. It makes the modding process a lot easier.. I put back most of the component original values and
now I'm concentrating on getting a little more bass and a wider
mid Q.. So the mid sifter and the .1uf cap in the bass eq are in
now. I put a switch in to toggle between the stock diodes and my
newest creation... 1n4401's with one side in series with a germ
diode...

http://www.smallbearelec.com/Detail.bok?no=101

You can get them at Mouser or probably Maplin? in Europe.

Also a cap kit from Small Bear or Futurlec is handy ;)

P

Edited by - mojah63 on 05/27/2008 16:37:35
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zentropa
Gold Member

USA
837 Posts

Posted - 05/27/2008 :  16:51:48  Show Profile  Send zentropa an AOL message  Reply with Quote
i've been meaning to grab some of those sockets ever since i found out how difficult it is to fit the legs from 1n4001's through a lot of the holes.

i think it'll be a little while until my next small bear order. i have a few places i order from but i try to buy most of my stuff locally and support the 4 stores left here that still sell this stuff (1 is like 2 blocks from my gf's apartment and 1 is like 1 mile from work).

1 is a surplus shop that has a mix & match of stuff, often mis-marked but when they have it, it's usually cheap and they have fairly good hours (10-8pm). right now that's where i get my .047uf mylar caps @$0.10 ea. 100uf electrolytics @$0.15 ea. and 220pf silver mica @$0.35 ea. and i can buy as few/many as i want.

there's a pro audio store (where all the recording studios buy their stuff) that has a good array of this stuff as well and gives quantity discounts. 3mm red LED's are $0.22 or $0.19 if i buy 10+ (yellow or green are $0.03 more), resistors are $0.10 ea. in 20 packs (or $0.12 ea) diodes @$0.10 to $0.21 ea. and they have most of the electrolytic and ceramic caps i need @$0.10 ea. they have a poor selection of mylar/poly caps though.

after that i order a lot of stuff from a surplus store that i used to buy old RAM and used SCSI cables when i lived in portland. they have the best price i have found on good quality 1uf mylar caps ($0.25 ea.) and cheap 8-pin sockets ($0.25 ea.) as well as decent prices on anything they have (but they don't always have it...) they do have J201 transistors for the SD-1 bleed fix though for $0.25 ea. the nicest thing about this place is that if they have it in stock it ships within 1 day and they charge actual shipping (or at least close to it). e.g. 200 resistors/caps/transitors/diodes = ~$2 shipping. the downside is that if they don't have it in stock, it may take a week for a phone call to ask if they should ship your order or hold it until more arrive.

beyond that i split orders between digikey and small bear. if i need JRC4558D's, germanium stuff, or a load of silver mica caps i go through small bear. if i need a lot of caps and i need em quick i go through digikey (they are located in the same state as me).

my mouser catalog got ruined in a flood recently... haven't ordered from them before.

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mojah63
Copper Member

USA
10 Posts

Posted - 05/28/2008 :  16:18:21  Show Profile  Reply with Quote
I wonder if digikey has those sockets? I bought
mine from mouser a while ago. Mouser is pretty
good. They can ship USPS for small orders. The only
problem I had once was I had a backorder and they
charged me to separate ship it. The previous time
they didn't charge me. There online ordering is a
little simpler than digikey. I've ordered from digikey
a few time myself, it's just hard to find something if
you don't know exactly what it's called.. I'll have
to try my local pro audio shop for parts.. I've bought
a lot of cabinet hardware from him... The only other
electronics place near me is Rat Shack, you know it's
not much of a parts place anymore...

I tried out my changes last night at rehearsal and It
sounds much better. Way huge midrange and Marshall crunch
out of my combo amp. I'm getting too old to shelp out my
stack anymore... I put back c24 + c34 and changed c09 to
.1uf and c36 to .1 uf also. The original mod that I did was
the monte alums mod also the original ic is back.


Hope you have good luck with yours :)
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zentropa
Gold Member

USA
837 Posts

Posted - 05/28/2008 :  16:32:23  Show Profile  Send zentropa an AOL message  Reply with Quote
digikey doesn't have the sockets but they are located in my state so if i order on a tuesday, they're here wednesday, and shipping was like $2.21 but i had to clear a $25 minimum order.



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Laurie
Double Platinum Member

Canada
4854 Posts

Posted - 06/14/2008 :  08:06:09  Show Profile  Visit Laurie's Homepage  Reply with Quote
Just did the Diezner mod on my second MT-2, plus replaced all the 1�F caps with polyester and the 10�F caps with tantalums.

Interesting result... opened it up a lot. Not sure if it's an "improvement", rather it is simply "different" and just as good (I always liked the stock MT-2 anyway).
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Laurie
Double Platinum Member

Canada
4854 Posts

Posted - 06/19/2008 :  17:09:50  Show Profile  Visit Laurie's Homepage  Reply with Quote
The Diezner mod isn't going to stick. I think if was was more into Metal music it would suit better. I think I'll be taking a few of the mod components out - putting the modded diodes back to original, plus putting some (not all) of the mids back.
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Laurie
Double Platinum Member

Canada
4854 Posts

Posted - 06/22/2008 :  04:09:02  Show Profile  Visit Laurie's Homepage  Reply with Quote
Just fiddled with this mod some more. Ended up reinstalling C35 and C25. Now it sounds good to my ear...

Total mod list:
- C34 .027uf to .047uf
- C42 .047uf to .1 uf
- D3 1n4148 to LED
- D4 1n4148 to 1n4007
- C36 .022uf to .1 uf
- all 1�F caps changed to metallised polyester
- all 10�F caps changed to tantalum

I quite like it. It's opened up, better EQ, and distortion a little more "controlled" than the stock MT-2.

Edited by - Laurie on 06/22/2008 04:11:03
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