DEMO Breadboard builds [Boss MT-2 Metal Zone Bonanza + mods //// JCM800 Pedal /// EAE Model feT]

[owlexifry]

Pro level breadboarding. I like the sounds you're getting, with and without mods.

cheers!
none of this is really all that serious, (my preferred rig/method is a drive boosted high gain tube amp channel) it's all just a bit of fun and experimentation with the circuit that left a huge impression on me from my youth, by making otherwise awful cheap solid state amps fun and tolerable.

I've had basically the opposite idea about the tone stack - take only the distortion stages of the Metal Zone and put the Marshall Valvestate or Ampeg VH-140C tone stack after it. Could make for a decent 90s death metal preamp in a box type of thing I think, although I guess even the stock Metal Zone already kind of is just that.

aw hell yeah. i like this idea.
reckon the HM-2 might be worth looking at. maybe i’ll do that next.

cos often i find the mids control on the MT-2 can be a little redundant (if not otherwise destructive if you don't get it just right), as i’ve often found good sounds with the mid cut/boost sitting at noon(zero), most of the judicious action happening in the treble knob, and then bass to taste.
but yeah maybe the ‘ultramid’ in the VH140 might be a little more useful.
recently just copped a VH drive board from aionfx a few weeks ago, keen to check that out someday.

Has anybody done a Russian Muff with HM-2 tonestack yet?

well, if i get around to plotting out a HM-2 tonestack for MT-2, I'm sure i could get this done

 

[zeropluszero]

There's no decent 6505/5150 preamp pcb available is there? (the Aion Amptweaker sounds inconclusive I believe) I have one of those Orange Pedal Baby power amps, and would love to box a preamp so I stop thinking about just re-buying a 6505MH.

 

[owlexifry]

There's no decent 6505/5150 preamp pcb available is there? (the Aion Amptweaker sounds inconclusive I believe) I have one of those Orange Pedal Baby power amps, and would love to box a preamp so I stop thinking about just re-buying a 6505MH.

despite claims that the amptweaker tight metal is meant to emulate a 5150, the aionfx version, "ember metal distortion', i built was quite a disappointment.
there's definitely better distortions out there.

e.g. the brown betty i built was way more fun.
[although i reckon the 6 knob version without the mids control (thermionic distortion) would probably do it just as well, if not better (mids control on the brown betty was a bit redundant imo)]

 

[zeropluszero]

Yeh I dont think you were the only person to say the Ember was underwhelming.

 

[Feral Feline]

...
Has anybody done a Russian Muff with HM-2 tonestack yet?

Great Idea!

 

[Blackboarcult]

There's no decent 6505/5150 preamp pcb available is there? (the Aion Amptweaker sounds inconclusive I believe) I have one of those Orange Pedal Baby power amps, and would love to box a preamp so I stop thinking about just re-buying a 6505MH.

The AMT P2 gets really, really close, but I don't know if there is a pcb for it anywhere.
Otherwise, the Baja EVH and its subsequent version by dylan are quite nice too, a tad undergained though, compared to the original amp.

 

[zeropluszero]

I'll have to read those over.

 

[owlexifry]

Has anybody done a Russian Muff with HM-2 tonestack yet?

alright, here it is.

finished a HM-2 build on the breadboard this arvo. it's gnarly. gotta do a demo soon.

so tonight i plotted out a russian muff on the free space left (minus tone circuit & q4), and got it running into the HM-2 EQ.
but it’s 1:45am so i can’t properly test or hear it yet, but it’s working well. keen.
(3x 2N5088, Q3 collector -> 4.7uF -> non-inverting input of buffer stage immediately prior to the EQ stage)

 

[jwin615]

The AMT P2 gets really, really close, but I don't know if there is a pcb for it anywhere.
Otherwise, the Baja EVH and its subsequent version by dylan are quite nice too, a tad undergained though, compared to the original amp.

AMT Legend Series II Drive Channel ONLY - Share Project - PCBWay

This PCB can implement any of the AMT Legend Series II drive channels. Does not include the clean channel or cab sim. This will fit easily in a 125B case.I also have a PCB that includes the clean chan...

www.pcbway.com

 

[Blackboarcult]

Awesome, can't wait to hear that!
One thing to consider - if we max the tone controls, the opamp's gonna clip due to the amplitude coming from the last bjt. It'd be better to stick e.g. a 68k-33k voltage divider before the buffer to make sure not to hit the rails at the EQ...