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LEVELHIGHLOWDISTORTION

1590B · 4 knobs

Tagboard Effects

Exar MT-1 MetalVerified

Based on the Exar MT-1 Metal· 1 other board clones it

Category
Distortion
Controls
Level · High · Low · Distortion
Build
Vero· 20×20· 23 cuts, 9 links
Layout
Verified · Tagboard Effects marks it as built and working
Tags
Distortion, Exar

From the post

Hi yall. Noticed a week or so back that it's been exactly ten years since my first post here. To celebrate the occasion, i thought i'd post something. There's been a number of slower years along the way, but so it goes. Life has it's ups and downs. To quote one of the more interesting british bands i've found in recent years: "It's alright now. Not what you hoped for, but that's ok. Teenage hopes are never less than perfect anyway." Now for the layout. There had been a trace up on FSB for years and it seemed a bit wonky on couple of details. Vitalii checked his unit out and there were a couple of errors on that old trace. His new trace seems to be spot on. Now, this probably won't be the low-parts-count / easy build alternative for HM-2 style sounds, but this may still be nice 1590B-sized build with enough distorion. There's also room for tweaking. For examble, one could sub one or even both clipping diode pairs for LEDs or Schottkys or use a on/off/on switch for changing them on the fly. Hi/Lo gyrator controls seem to be quite effective as well. I bet this will be a fun distortion build with no special parts required. Sadly, no youtube demos to be found.. Should you build one of these and a make a demo? ...So i could post it up?

Schematic

This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.

Parts list 30 rows

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Check before you build · 1 value the reader of this layout was not sure of
  • Which transistor each BC550/BC547 label belongs to is by position: the two upper ones taken as BC550, the middle-right and bottom ones as BC547
RefValueNormalizedTypeNotes
Resistors 10
×610K10kread from the layout by eye
×41K1kread from the layout by eye
×21M1Mread from the layout by eye
×2470K470kread from the layout by eye
×2470Ω470read from the layout by eye
×256K56kread from the layout by eye
×23.3K3.3kread from the layout by eye
×1100K100kread from the layout by eye
×112K12kread from the layout by eye
×133K33kread from the layout by eye
Capacitors 11
×1100pF100pread from the layout by eye
×1470pF470pread from the layout by eye
×11nF1nread from the layout by eye
×110nF10nread from the layout by eye
×122nF22nread from the layout by eye
×247nF47nread from the layout by eye
×1150nF150nread from the layout by eye
×1330nF330nread from the layout by eye
×31uF1uelectrolytic; read from the layout by eye
×110uF10uelectrolytic; read from the layout by eye
×2100uF100uelectrolytic; read from the layout by eye
Diodes 2
D11N58171N5817read from the layout by eye
×41N41481N4148D2, D3, D4, D5; read from the layout by eye
Transistors 2
×2BC550BC550read from the layout by eye
×2BC547BC547read from the layout by eye
ICs 1
IC1TL072TL072read from the layout by eye
Potentiometers 4
DistortionB470KB470kPotentiometerread from the layout by eye
LoB22KB22kPotentiometerread from the layout by eye
HiB22KB22kPotentiometerread from the layout by eye
LevelA10KA10kPotentiometerread from the layout by eye

Other boards based on the Exar MT-1 Metal