New Marshall Pedals

[Einzeln]

What is the purpose of That chip in an overdrive?

 

[JTEX]

Noise gate? Bit of a compressor maybe?

 

[Robert]

The JVM pedal has a noise gate.

 

[SillyOctpuss]

The JVM pedal has a noise gate.

If it's anything like the amp it'll bloody need it when the gain and volume start getting cranked

Is it a fet input stage and then opamp based like the circuit Santiago said he designed three years ago for them?

 

[Robert]

Is it a fet input stage and then opamp based like the circuit Santiago said he designed three years ago for them?

I'll let you know soon, I saved that one for last.

 

[tcpoint]

I'm going to have a buy these pcbs. The Peavey ones, as well. I know that I'll like them enough and buy another set of each. I know myself, too well. I'm afraid my wife is going to have an intervention, soon.

 

[Feral Feline]

Well, she told me it was going to be spring, but... yeah, with all these sets of PCBs about to flood the shop — the sooner the better.

 

[Robert]

For sure the pedal's don't seem to be cheaply made.

These aren't your typical Hammond 1590BB either...



With that said, I feel like the weak point of these is going to be the footswitch.
The hole in the enclosure is larger than the metal hardware... so when you stomp, you're stomping against that white plastic light diffuser.

 

[fontoponto]

bump… up the jam. any news on those shiny boxes?

 

[Robert]

bump… up the jam. any news on those shiny boxes?

The '800 prototype will be here shortly.

 

[fontoponto]

Thanks a lot!

 

[Blackboarcult]

By looking at the gutshots posted:

- Jfet input gain stage going to gain pot (?) going to first opamp stage
- Looks like MC3317 opamp
- Diodes in feedback loop with those BAV-type "transistor-shape" diode pairs? Perhaps similar to what Friedman or Blackstar have already done on their SS/Hybrids.
- Lug 1 of tone pot going to cap going to possibly ground, standard-ish treble cut there
- Surprised not to see any LEDs, given Marshall's fondness of them

Damn eager to see the schems. They actually sound consistently good on the demos.

 

[HamishR]

I've played a few excellent Marshall 2204 style amps and quite like that kind of master volume in those amps. Right now I'm playing a 1987 Lead style Marshall circuit (ie not a MV amp) in a 1x12 combo a lot and it handles my ODs like a champ. After hearing Steve Jones' live sound over the weekend I'm keen to hear what the JCM800 pedal might sound like through my amp.

 

[Blackboarcult]

Totally get what you are aiming for
This is, to me, THE quintessential hard rock tone:

 

[rossbalch]

Diodes in feedback loop with those BAV-type "transistor-shape" diode pairs?

Could you expand on this? What's special about the BAV diodes?

 

[Robert]

Nothing special, they're just 4148 / BAT equivalents but there are two of them in one SOT-23 package.

 

[Blackboarcult]

As Robert said. Nothing special at all, just convenient for mass prod.

 

[NickKUK]

Good to see they still have an easter egg.

 

[Feral Feline]

Nothing special, they're just 4148 / BAT equivalents but there are two of them in one SOT-23 package.

AND! — the BAV're $5.03 each...

 

[rossbalch]

AND! — the BAV're $5.03 each...

For real? Swear I've seen them on mouser / lcsc for like less than 1c