Search found 7 matches

by TWSpedals
10 Jan 2021, 01:18
Forum: Pimp-My-Cheap-Pedal
Topic: Ibanez SML/MS10/SM9 mods
Replies: 1
Views: 2202

Re: Ibanez SML/MS10/SM9 mods

My mods are just to increase the max output volume.

Jumper R58
Increase R22 to 100K
Decrease R15 to 1K

These changes tease the most output volume out of the pedal while keeping as much of it as original as possible. None of these mods should colour the tone in anyway.
by TWSpedals
06 Jan 2021, 22:45
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Böhm- Trickverzerrer [schematic]
Replies: 40
Views: 9645

Re: Böhm- Trickverzerrer [schematic]

Here is the schematic of my device. It does not work, after the repair I will make some measurements. BoehmTrickverzerrerSchematic.JPG GA101 If_VF.jpg I think you need the power filter cap after the 270ohm resistor not before, other than that it looks the same as mine in terms of components in the ...
by TWSpedals
04 Jan 2021, 18:24
Forum: Boutique Stompboxes dissected...
Topic: Studio Electronics Wolftone Chaos Schematic [traced]
Replies: 0
Views: 262

Studio Electronics Wolftone Chaos Schematic [traced]

Just traced this rather scarce Studio Electronics Wolftone Chaos. It's a weird octave up fuzz that was re-released/cloned by Malekko as well. The transformer seems to be utilised purely as an impedance conversion device, and won't be adding much saturation (to my knowledge) as it is DC decoupled. Al...
by TWSpedals
03 Jan 2021, 16:45
Forum: Boutique Stompboxes dissected...
Topic: Hudson Electronics Broadcast - AP
Replies: 11
Views: 2716

Re: Hudson Electronics Broadcast - AP

Because the transformer isn't being saturated with DC and is simply converting the impedance of the output I don't expect it's doing much to the sound (though that would be dependant on that follows it in the signal chain). I've heard at least 1 account of a clone being built and the transformer add...
by TWSpedals
03 Jan 2021, 15:34
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Böhm- Trickverzerrer [schematic]
Replies: 40
Views: 9645

Re: Böhm- Trickverzerrer [schematic]

That large 100n cap between the pots is the capacitor in the tone stack that departs from the factory schematic. It looks like yours has the same board layout as mine. There is no doubt yours too will have resistor value variations. I'm kind of envious that yours looks that nice with the white text ...
by TWSpedals
03 Jan 2021, 15:07
Forum: Modern Stompbox Effects (1975 - ...)
Topic: Ibanez - SM-9 / Maxon SM-01 Super Metal [schematic]
Replies: 22
Views: 10131

Re: Ibanez - SM-9 / Maxon SM-01 Super Metal [schematic]

Recently traced my Ibanez Super Metal SML, from the master series. The PCB number is MP-SM2001. Matches up very well if the schematics online already. There is a few differences mind: TR1 is a 2SK118 FET not a BJT. There is no LEDs used as clipping diodes. All the clipping diodes are silicon diodes....
by TWSpedals
31 Dec 2020, 00:01
Forum: Vintage Stompbox Corner ( ... - 1975)
Topic: Böhm- Trickverzerrer [schematic]
Replies: 40
Views: 9645

Re: Böhm- Trickverzerrer [schematic]

I recently bought one of these and traced it out and mine has a number of differences from the factory schematic. Nearly every resistor value is different, and there's is a difference in the the tone stack too. Instead of the 100n cap going between 'Diskant' lug 1 and ground, it goes between said po...