Mojo Mojotone Blackface Twin Reverb Instruction Manual

Mojo Mojotone Blackface Twin Reverb Instruction Manual

Audio amplifier diy kit

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Tools needed for build:

40 W Soldering Iron
Wire Cutters / Stripper
Needle Nose Pliers
Phillips Head Screwdriver
Small Flat Head Screwdriver
AC/DC Multimeter with Resistance Reading
44 Rosin Core Solder
Lay out parts for a quick inventory (Photo 1)
Compare physical inventory to the included bill of materials. Packaging mistakes are rare for Mojo but
double check us before you start your build.

Install chassis mounted hardware

Tube Sockets - Install so that they all face the same direction (noting pin #1 orientation)
Power Transformer - Make sure to mount the PT so that the label faces toward tube sockets. This will be
helpful for anyone looking at the transformer model number without having to take the chassis out of the
amp.
Output Transformer - Feed wires through grommets and note wire locations.
Install Potentiometers.
Install Bias Potentiometer.
Install Input, Output Jacks, and Switches.
Fuse Holder - Install fuse at same time so you won't forget.
Pilot Light Assembly (Lens and Bulb)
®
©Mojotone
Blackface Twin Reverb
Mojotone Blackface Twin Reverb
Style Amp Kit Instruction Manual
Photo 1 - Lay out parts for quick inventory
®
Style Amp Kit Manual 2012
®
Page 1

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Summary of Contents for Mojo Mojotone Blackface Twin Reverb

  • Page 1 Lay out parts for a quick inventory (Photo 1) • Compare physical inventory to the included bill of materials. Packaging mistakes are rare for Mojo but double check us before you start your build. Photo 1 - Lay out parts for quick inventory Install chassis mounted hardware •...
  • Page 2 Photo 2 - Installing Chassis Mounted Hardware Photo 3 - Filter Cap Fiberboard Assembly Fiberboard Assembly Tech Tip - Always use a clean tip on your soldering iron to make positive, clean solder joints, (“cold” solder joints can be a major problem in hand-wired amps) •...
  • Page 3 Photo 5 - Fiberboard Assembly Photo 6 - Filter Cap Fiberboard Assembly Photo 6 - Rectifi er / Bias Fiberboard Assembly ® ® ©Mojotone Blackface Twin Reverb Style Amp Kit Manual 2012 Page 3...
  • Page 4 Internal Wiring • Follow the color coded wiring diagram closely, twist the fi lament wires (6.3v heater wires) together from transformer and between tube sockets to reduce hum from 120ac voltage. • Have enough of the power cord inside chassis to reach fuse, switch and ground •...
  • Page 5 Photo 8 - Rectifi er / Bias Fiberboard Photo 9 - Internal Wiring - Power Amp ® ® ©Mojotone Blackface Twin Reverb Style Amp Kit Manual 2012 Page 5...
  • Page 6 Photo 10 - Internal Wiring - Preamp Photo 11 - Internal Wiring - Power Tube Sockets ® ® ©Mojotone Blackface Twin Reverb Style Amp Kit Manual 2012 Page 6...
  • Page 7: Testing The Amp

    Always use a multimeter to check the residual voltage in the cap to make sure it is fully discharged. Feel free to call Mojo at 1-800-927-Mojo (6656) at any time if you any questions regarding your kit. Thanks for choosing Mojo and don’t forget to crank it up!! **WARNING** The Voltages found inside your amp can cause serious harm or even death.

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