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ChristoMephisto
Platinum Member
Canada
1288 Posts |
 Posted - 01/20/2008 : 23:53:42
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One mod I've seen is removing the first two of the three clipping sections. The schems can be found at effects heaven.
Good luck |
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cctsim
Silver Member
United Kingdom
418 Posts |
Posted - 01/21/2008 : 04:03:18
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Certainly a possibility. I would probably use a switch, as I would like to be able to switch between the original and the modified version.
I am planning to jumper the Germanium diode pair via a switch as
first step. They seem to be some sort of noise gate that stops
signals in the range -0.3V to +0.3V
cctsim |
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leonard d rock
Silver Member
Philippines
301 Posts |
Posted - 01/24/2008 : 01:33:35
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quote:
Originally posted by Ken
I dont know about you guys, but I think the hm-2 is quite cool.
Its not the most "sonic" pedal out there, but still...the tone has something about itself.
I bought the pedal just for old times sake, since I used to have one when I was a kid. Remember it to be quite ok then. Belive that it was used on an old Peavy 112 Bandit at the time.
Still it sounds fine on my Marshall today. I�m happy
/ken
hi ken and all hm-2 lovers. i agree with you 200%! the hm-2 rules and sounds good with a humbuckers and marshalls. use the hm-2 with a les paul and marshall and you can get rhandy rhoads' heavenly-heavy growl. peace, leonard |
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Alice
Bronze Member
USA
66 Posts |
Posted - 01/26/2008 : 11:34:39
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The best part about that ad, Heavy Metalman's guitar is plugged into the output jack of the pedal. But he doesn't seem to give a shit. 
-A |
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leonard d rock
Silver Member
Philippines
301 Posts |
Posted - 01/27/2008 : 06:29:55
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quote:
Originally posted by Alice
The best part about that ad, Heavy Metalman's guitar is plugged into the output jack of the pedal. But he doesn't seem to give a shit.
-A
yeah. that ad was the one that made me buy the hm-2 in the first place. i really wanted to be a heavy metalman. |
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dfx
Copper Member
Philippines
33 Posts |
Posted - 02/25/2008 : 20:17:49
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@cctsim
have you successfully modded your hm-2?
i would like to hear the difference between stock and modified...
cheers!
:) |
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cctsim
Silver Member
United Kingdom
418 Posts |
Posted - 02/26/2008 : 14:31:14
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Yes, I did mod my HM-2. I am using a 4DPT swith for the mods located in the battery compartment. My idea was to be able to switch between the original and more mellow overdrive type of distortion.
I use the original HM-2 setting for practicing at lower volumes while the overdrive setting is more useful for live where you get a lot of
sustain from a cranked tube amp. In the latter situation, HM-2 has
to much distortion.
I will post some fotos later.
Harris |
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cctsim
Silver Member
United Kingdom
418 Posts |
Posted - 02/28/2008 : 01:15:23
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This is the mod I have done so far.
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leonard d rock
Silver Member
Philippines
301 Posts |
Posted - 02/28/2008 : 05:48:23
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hi cctsim. congrats on finding a mod for the hm-2.  most modders and players shun the hm-2 as if it has the plague.altho i swore never to mod my hm-2 since i love it, i might try it since it essentially becomes 2 pedals in one. it might free some pedalboard space for another pedal. if its ok with you, could you outline how to do your mod? thanks. |
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dfx
Copper Member
Philippines
33 Posts |
Posted - 02/28/2008 : 15:33:23
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@cctsim
Hi Harris,
congrats on your hm-2 mods. looking at the photos you posted, you managed to switch in/out the Ge diodes that are used as crossover distortion notch. am i right? a detailed schematic would be appreciated.
if you are familiar with the schematic, the HM-2 implemented 2 clipping methods. one is in the negative feedback of the opamp using assymetrical diodes (overdrive effect) and the other is symmetrical diodes (distortion effect) prior to the tone section. BOSS pretty much implemented a soft clip and hard clip fx unit into one ala dual dirt pedal setup.
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cctsim
Silver Member
United Kingdom
418 Posts |
Posted - 02/28/2008 : 16:18:06
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This is the first mod assigned to switch 1 that disables the Germanium diodes which implement some sort of noise gating (in my view):
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leonard d rock
Silver Member
Philippines
301 Posts |
Posted - 05/16/2008 : 10:57:11
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| hi guys. i was experimenting(tho i swore never to mod the hm-2 but i did) and came up with this mod which i currently like. i changed the stock diode in d8 to a LED and the resulting distorted sound is fuller, rounder and more dynamic. the distortion is still there, only not as sharp, but less shrill. regards, LDR |
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Topic |
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The infamous HM-2
