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VOLUMEMID

Enclosure not stated · 2 knobs

Effects Layouts (blog)

Fender Eric Clapton Active Mid-BoostVerified

Based on the Fender Eric Clapton Active Mid-Boost· 3 other boards clone it

Category
Boost
Controls
Volume · Mid
Layout
Verified · Effects Layouts (blog) marks it as built and working
Tags
Boost, EQ, Fender

From the post

Got a request for this one. It's the active midrange boost (of up to 25dB at around 500Hz) found in Fender's Eric Clapton signature Stratocaster. Ended up not board mounting the pots for a smaller board for those building this into a guitar. Here's the schematic for reference.

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 Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.

Parts list 35 rows

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Check before you build · 4 values the reader of this layout was not sure of
  • 232K, vertical resistor right of the 22nF cap in the middle of the board: printed clearly, unusual value
  • 233K, vertical resistor in the bottom row right of the 3.3K: printed clearly, unusual value
  • 216K, vertical resistor in the bottom row right of the 233K: printed clearly, unusual value
  • 321pF, ceramic cap in the bottom row right of the 470Ω: printed clearly, unusual value
RefValueNormalizedTypeNotes
Resistors 17
×247K47kread from the layout by eye
×222K22kread from the layout by eye
×147Ω47read from the layout by eye
×1470Ω470read from the layout by eye
×11.8K1.8kread from the layout by eye
×12.2K2.2kread from the layout by eye
×13.3K3.3kread from the layout by eye
×14.7K4.7kread from the layout by eye
×115K15kread from the layout by eye
×133K33kread from the layout by eye
×182K82kread from the layout by eye
×1100K100kread from the layout by eye
×1216K216kread from the layout by eye
×1232K232kread from the layout by eye
×1233K233kread from the layout by eye
×1330K330kread from the layout by eye
×11.5M1.5Mread from the layout by eye
Capacitors 11
×110pF10pread from the layout by eye
×1120pF120pread from the layout by eye
×1321pF321pread from the layout by eye
×11nF1nread from the layout by eye
×16.8nF6.8nread from the layout by eye
×122nF22nread from the layout by eye
×147nF47nread from the layout by eye
×182nF82nread from the layout by eye
×1100nF100nread from the layout by eye
×210uF10uelectrolytic; read from the layout by eye
×147uF47uelectrolytic; read from the layout by eye
Diodes 1
×11N40011N4001read from the layout by eye
Transistors 4
Q12N50882N5088read from the layout by eye
Q22N50882N5088read from the layout by eye
Q32N50882N5088read from the layout by eye
Q42N50872N5087PNP; read from the layout by eye
Potentiometers 2
VolumeB250KB250kPotentiometerread from the layout by eye
MidB250KB250kPotentiometerread from the layout by eye

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