Dallas Rangemaster pedal guts (w/ parts list)

Everything has been installed and my rendition of the famous Dallas Rangemaster stomp box is ready to test! The 3.3kΩ and 47kΩ bias resistors now show 7.2v on the collector, right where I want it. I also used a 25kΩ gain (audio taper) pot and found it had more balls than the original 10kΩ pot.

 

As for the cloth insulated wires I used red for power (+9v), black for ground (-) and green for signal.

 

Full Parts List:

 

1 “Rangemaster NPN U.S” germanium transistor (Small Bear: 0106), $7.00

1 3.3kΩ bias resistor (Small Bear, came w/ transistor), $0.00

1 47kΩ bias resistor (Small Bear, came w/ transistor), $0.00

1 470kΩ 1% metal film resistor (Mouser: 660-MF1/4DCT52R4703F), $0.05

1 3.9kΩ 1% metal film LED resistor (Mouser: 660-MF1/4DCT52R3901F), $0.05

1 25kΩ 16mm audio taper potentiometer (Pedal Parts Plus: 7526), $1.25

1 .005μF polyester film input capacitor (Mouser: 598-WMF1D5K-F), $1.47

1 .0068μF polyester film input capacitor (Mouser: 598-WMC08D68K-F), $1.46

1 .01μF styrene film output capacitor (Mouser: 23PS310), $0.39

2 47μF aluminum electrolytic capacitors (Mouser: 647-TVX1J470MAD), $0.92 ($0.46/ea)

1 1N4148 diode (Pedal Parts Plus: #4001), $0.15

20 gauge red cloth insulated wire (Tube Depot: CW-20-SLD-RED), $0.55 ($0.55/foot)

20 gauge black cloth insulated wire (Tube Depot: CW-20-SLD-BLACK), $0.55 ($0.55/foot)

20 gauge green cloth insulated wire (Tube Depot: CW-20-SLD-GREEN), $0.55 ($0.55/foot)

5 lug terminal strip (Tube Depot: P-TS-817), $0.65

1 #4-40 ¼" nut and bolt (Home Depot), $0.10 (for terminal strip)

1 black fluted “MXR” knob (Pedal Parts Plus: 10002), $0.75

1 2.1mm DC power jack (Mouser: 163-4302-E), $1.38

1 5mm ultraviolet LED (Pedal Parts Plus: 5005), $0.25

1 5mm LED bezel (Pedal Parts Plus: 5000), $0.65

1 Switchcraft ¼" mono output jack (Pedal Parts Plus: 6005), $0.50

1 Switchcraft ¼" stereo input jack (Pedal Parts Plus: 6006), $0.75

1 3PDT “true bypass” footswitch (Pedal Parts Plus: 9008), $3.80

1 SPDT micro-mini toggle switch (Radio Shack: 275-625), $3.99

1 1590B enclosure (Pedal Parts Plus: 1009), $5.75

“Almond” paint job for 1590B enclosure (Pedal Parts Plus: 105), $2.25

 

Not a bad little pedal for $35.21 (+ shipping fees) in parts, along with some drilling and soldering time!

 

NOTE: You can also view a demo video of this pedal on my YouTube channel at www.youtube.com/watch?v=9y6KMfPqPUg ♪♫

Done