Rockfabrik - Mind Abuse Distortion

[J0K3RX]

I found some gut shots on the net and this one has me a bit stumped..? Sounds Huge though and has massive gain!!

Link

[dv8r601]

I'm so damn glad you posted this. I had been looking for the name of this for a while. I saw a demo a bit ago but forgot the name altogether. I assumed it was a 386 design like the krank distortus maximus / protone body rot. Now I am guessing its more a modded Marshall type design a la guv'nor or something. No info to help but I am very interested in this one as well.

[modman]

It looks like a TL072 and a 1044 charge pump. From the video demos, the mode switch affects the midrange voicing/scoop.

[J0K3RX]

Yeah... Seems like allot of resistors, caps and diodes for one TL072 but I guess they could be a part of the tonestack or something? Has a hell of allot of gain for one dual opamp which makes me wonder what is on the other side of the board I have seen all kinds of gut shots and even the raw un-populated boards but not even one shot of the other side... maybe some SMD hiding out over there like FET's or somethin?

[hyrk]

I found some gut shots on the net and this one has me a bit stumped..? Sounds Huge though and has massive gain!!

Link

Sound like great high gain, need to follow that if Joker is on it !

[bool]

I see a TO92-something in there. Maybe this makes "more" gain. Maybe not.

[modman]

Screen grab of the PCB being routed. That T0-92 looks like voltage reg to me.

[J0K3RX]

YellowBoy - Great find on the pcb routing screen shot! Yeah, that looks like a voltage doubler or charge pump, whatever you wanna call it..

[roseblood11]

You can see some more details in that video, and in the demos from Brett Kingman. I'm not sure, if there are components on the other side, maybe just some connectors.
The design reminds me of the Emma Pisdiyauwot.

[YellowBoy]

Yip...that routing pic shows placeholders for what looks like trimmers. You can see them very briefly in the video as well. There's definitely more going on under that PCB that we know about. Starting to see more black solder masks these days. Is that their way of making traces more difficult I wonder?

[Circuitsmith]

It seems that opamps are connected as buffers because pin 1 & 2 connected together as well as pins 6 & 7.
So no gain there.

The routing image may also have wrong tracing on purpose.

[bajaman]

looks like the gain is performed by the 4 fets ? Very high voltage quadrupling power supply - the TL072 is just input and output buffers perhaps ?

ma2.png

[Ichabod_Crane]

Sounds great!

[dv8r601]

Now this makes WAY MORE sense. They let slip those early guts to muddy the water. Its a damn good thing we have people like Bajaman that keep up the search for these kinda things. One observation on the 2nd (Bajaman) gut shot: they used the tiny ass smd trim pots with Thru hole Fets. Am I the only one who thinks that is kinda silly. I know these smd trim pots are really inexpensive and manufacturing cost plays into a product but it looks ridic

[modman]

rockfabrik_mindabuse_003.jpg

g6-thumb.jpg

[turbonigro]

Could be wrong but to me looks like a Joe Davisson Vulcan Overdrive with gyrator filters and output fet buffer. Not sure about the filters.

[temol]

Anything new in the subject?

T.