Dunwich DA-120
- Thread starter cniers13
- Start date
Just passing that along in case anyone is interested. Just posted today. I grabbed one and am excited to build it.
Thanks! I see the also have the wizard which is perfect
@gheorge77 I see they have a different C3 compared to what I traced from the tagboardeffects layout and looking at pictures of the original assemblies. They have 1u instead of 1n. There may be other differences, I'll take a closer look tomorrow. It's probably worth a bit of a check before you start populating it.
Here's mine:
forum.pedalpcb.com
Here's mine:
Dunwich DA-120 on a breadboard
Well, this is my most ambitious breadboard. For new breadboard bakers: Don’t get discouraged when your board doesn’t work. This is a monster with 7 pots, 3 different voltages, 2 IC’s, and 4 transistors. And it was crippled by a missing jumper and an out of place resistor leg. Just walk...
forum.pedalpcb.com
Interesting! It seems unusual to use a 1uF as a coupling cap.@gheorge77 I see they have a different C3 compared to what I traced from the tagboardeffects layout and looking at pictures of the original assemblies. They have 1u instead of 1n. There may be other differences, I'll take a closer look tomorrow. It's probably worth a bit of a check before you start populating it.
Here's mine:
Dunwich DA-120 on a breadboard
Well, this is my most ambitious breadboard. For new breadboard bakers: Don’t get discouraged when your board doesn’t work. This is a monster with 7 pots, 3 different voltages, 2 IC’s, and 4 transistors. And it was crippled by a missing jumper and an out of place resistor leg. Just walk...
Feral Feline
Well-known member
I don't think it's unusual.
Check out the EHX Muff schematics on Kit Rae's website, or some circuits targeting Bass Geetar...
Bricksnbeatles
Member known well
In addition to the effects layouts version, I’m pretty sure the GCI Apostle, which was designed by Dunwich’s very own Nick Williams, is almost the same as the DA-120, but with a few differences (one less knob, can’t remember which, but there’s also a switch to go between two different tone stack orders)
Nice find on the Apostle! Both of them are Matamp based, so lots of similarities, but also lots of differences. The Apostle seems to be more of a typical tube-to-fet approach (it's jfet based, running at 36V) while the DA120 seems like a more refined (not sure it's the word I'm looking for) design. All that to say I think they are different enough to justify building both
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I also built the Dirtboxlayouts board. I haven't used many amp emulator circuits, but this one sounds great. It's meant to go into a clean, slightly driven amp, but I also liked it as a preamp or with cab impulses.
doesitdoom.com
"“It’s not exactly the preamp of a GT120; it’s more like an emulation of a pedal hitting a GT120 and it does have a phase invertor and power amp emulation section inside it as well."
Dunwich Amps DA120 Overdrive: Boosted Matamp GT120 in a Box - Does It Doom?
Discussion of the Dunwich Amps DA120, a guitar effects pedal which uses MOSFET emulation to produce the tone of a boosted Matamp GT120 from the 70's.
doesitdoom.com
ICTRock
Well-known member
I used the one from tayda. I also ordered one from Amazon that was pc pin to hedge my bets but cutting the eyelets off the tayda switch worked
Feral Feline
Well-known member
Was just comparing schematics of the GCI and the ELS.
As lrgaraujo pointed out, the N.E.W. Apostle is JFET-based whereas the ELS EF120 is MOSFET-based, along with a few other differences.
The tone-stack is up front on the Apostle, switchable to a 2nd tone-stack between the transistor and op-amp sections, the latter being fixed in the EF120.
The Apostle is missing the EF120's DRIVE-control on the first transistor stage, having only a bias trimmer for the initial JFET.
The Apostle's BOOST is off the 3rd transistor, whereas the EF120's BOOST is op-amp based at the end of the circuit.
With some kajiggery, you could build a pseudo Apostle on the EF120 board, but you'd lack the Apostle's two different EQ positions and the EF120 has the 2 extra op-amp stages as well.
Further kajiggery with the Apostle: use concentric pots for the EQ and make the EQ switch a stomper for a 2-channel pedal.
As lrgaraujo pointed out, the N.E.W. Apostle is JFET-based whereas the ELS EF120 is MOSFET-based, along with a few other differences.
The tone-stack is up front on the Apostle, switchable to a 2nd tone-stack between the transistor and op-amp sections, the latter being fixed in the EF120.
The Apostle is missing the EF120's DRIVE-control on the first transistor stage, having only a bias trimmer for the initial JFET.
The Apostle's BOOST is off the 3rd transistor, whereas the EF120's BOOST is op-amp based at the end of the circuit.
With some kajiggery, you could build a pseudo Apostle on the EF120 board, but you'd lack the Apostle's two different EQ positions and the EF120 has the 2 extra op-amp stages as well.
Further kajiggery with the Apostle: use concentric pots for the EQ and make the EQ switch a stomper for a 2-channel pedal.
Kroars
Well-known member
Looks like both the Pepperbox (Volt Thrower) and EF120 (DA120) were removed from Effects Layouts catalog. Still has the Widogast (Wizard) and Illithid (Cthulu three knob), which is an awesome fuzz btw, up. I wonder if Magic requested he take those two down? Glad I grabbed a couple of each!
EF120 will be back in stock in a couple/few weeks. Asked storyboardist over on the madbean forum.
Dibs on 1
Kroars
Well-known member
Hoping a 7/4 sale in coming
Fama
Well-known member
...but 7/4 would be a 75% price increase?
