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Summary of Contents for Mojotone CANYON Series
- Page 3 In the control; the second channel has a single 18watt TMB is based on the circuit used in Mojotone version, we have done just this. input with volume, treble, middle, and bass vintage Marshall models 1958, 1973, and We have integrated the entire preamp section controls.
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Page 4: Table Of Contents
Copyright © 2019 Mojotone, LLC All content included in this book including text, graphics and images is the property of Mojotone, LLC and protected by U.S. and international copyright laws. The collection, arrangement and assembly of all content in this book is the exclusive property of Mojotone, LLC and protected by U.S. -
Page 5: Introduction
{ Always work in a well-ventilated space. { Have safety equipment such as a fire extinguisher, a first-aid kit and a phone nearby. { Be Patient! Rushing through any type of technical work just leads to frustration and compounds issues that can easily be avoided. WWW.MOJOTONE.COM... -
Page 6: Inventory
(1) faceplate and backplate* EL 84 EZ 81 ECC83S GZ34S 12AX7 12AT7 (1) void free birch combo / head cabinet* (1) Mojotone British Vintage speaker* (1) aluminum chassis EL 84 EZ 81 ECC83S GZ34S 12AX7 12AT7 (1) Mojotone British Style... -
Page 7: Tools
5.1KΩ (2) Sprague Atom watt 10KΩ 25µf @50v (20) 4-40 x ” screw & keps nuts watt 47KΩ (1) Mojotone (2) 8-32 x ’’ screw & keps nuts Electrolytic watt 68KΩ KingCap (4) 6-32 x ’’ screw & keps nuts 16µf @475v... -
Page 8: Component Identity & Orientation
B A N D 1 B A N D 2 M U LTI PLI ER TO LERA N CE Mojotone kit, all use the 4-band resistor color Black 1Ω code for determining their values. The easiest Brown 10Ω... -
Page 9: Soldering Basics
{ Remove the iron from the connection and allow the joint to cool. Once it has cooled you can gently pull the component to test the connection. WWW.MOJOTONE.COM... -
Page 10: Chassis Assembly
S ECT I O N 7 : CHASSIS ASSEMBLY T R A N S FO R M E RS power { Mount the power transformer by first output transformer removing the black rubber tips on the ends of transformer the mounting screws. Do NOT remove the nuts output on the transformer. - Page 11 { Mount J2 input jacks using their pre- assembled hardware and an adjustable wrench. Pay close attention to the orientation of the jacks on the wiring “INPUTS” J1 jack assembly diagram. WWW.MOJOTONE.COM...
- Page 12 S ECT I O N 8 : TRANSFORMER & COMPONENT WIRING POW E R T R A N S FO R M ER { Twist all matching pairs of wires coming out of the power transformer. { Measure length needed for each wire, allow yourself extra lead and cut to length.
- Page 13 (+) terminal to the same lug the Blue wire is connected to on the terminal strip. { Double check wiring and solder all connections in this section EXCEPT ones with the red circle ( WWW.MOJOTONE.COM...
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Page 14: Circuit Board Assembly
S ECT I O N 8 : CIRCUIT BOARD ASSEMBLY & INSTALLATION { Begin by applying traces (or “jumper wires”) to the board. 47 pF Utilize the different sections on P R O T i p: the post of the turret when attaching your wires and components. - Page 15 Install 4-40 a turret board standoff on each hole using the ” 1/4‘‘ 4-40 screws. { Line the mounting holes on the turret board with the turret board standoffs and standoff secure using the 1/4‘‘ 4-40 screws. 4-40 ” WWW.MOJOTONE.COM...
- Page 16 S ECT I O N 1 0 : WIRING SOCKETS POTS JACKS & CAN CAPACITOR TUBE SOCKET FILAMENT WIRES This is a high gain preamp and is more Pro Tip: sensitive to filament hum from wiring 500 K 25 K 250 K 500 K 500 K...
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Page 17: Wiring The Sockets, Jacks, Pots & Power Cord
Gray wire. Start from the left “BASS” control and work your way across the chassis towards the input jacks. 500 K 25 K 250 K 500 K 500 K 500 K WWW.MOJOTONE.COM... - Page 18 INPUT JACKS { Prepare the Green signal wire from pin J1 jack 2 of the preamp tube and connect it to the rear left lug on the “MASTER” input jack. { Prepare the three jumper wires and connect to the “INPUTS” input jacks as 25 K 250 K 500 K...
- Page 19 BRITISH STYLE 18watt POWER TRANSFORMER 47 pF CAN CAPACITOR from indicator lamp 32µF + 32µF @500V from mains switch from power transformer from output transformer ground tab ground tab impedance switch fuse holder A/C power jack J1 jack J2 jack WWW.MOJOTONE.COM...
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Page 20: S Ect I O N 1 2
S ECT I O N 1 2: Speaker Wiring & Installation S P EA K ER W I R I N G { Twist the two 15” lengths of Black and White White 18 gauge stranded wire together. { Push the insulation back about 1⁄2” from both wires on one end and tin them. -
Page 21: Initial Chassis Testing
(Red) probe and carefully measure the voltages on the (+) terminals on the can capacitors. Then measure the voltage at the 16uf capacitor on the board. The voltages will be higher than the voltage readings on the wiring diagram due to the WWW.MOJOTONE.COM... -
Page 22: S Ect I O N 1 4
S ECT I O N 1 4 : Chassis Installation H E A D CA B I N E T { Turn the chassis over so that the open end is facing up. If you still have the tubes installed be VERY careful not to break the EZ 81 EL 84 EL 84... -
Page 23: Sound Test
All About Vacuum Tube Guitar Amplifiers by Gerald Weber Truly must read books by Gerald Weber for any amp tech. You can purchase these at Mojotone.com. { The Tube Amp Book By Aspen Pitman. A great resource for schematics and basic tube info. -
Page 24: More From Mojotone
Using unconventional means to work on your amplifier chassis can be a real pain, and cause unwanted frustration. We here at Mojotone decided we’ve had enough and created our take on the bench-top repair stand. The final outcome is the item listed above, the Mojotone Amplifier Chassis Stand. - Page 25 C i rc u i t: 5 F 1 TWEED CHAMP 5F1 STYLE COMBO Mojotone’s Tweed Champ Style Amp Kit is based on the beloved 5 watt amp from the 1950s. These amps were perfect for recording and were featured on a wide array of recordings from Joe Walsh’s “Rocky Mountain Way”...
- Page 26 BRITISH nc3015 STYLE COMBO & head Inspired by some of history’s most iconic British amps the Mojotone NC3015 is one of our most unique and articulate amps yet. Based on a familiar Class A EL84 platform, this amp delivers tones that salute some of the greatest guitarists of all time.
- Page 27 Brown leather handle 1/4‘‘ input jacks chicken head knob mojotone orange drop capacitors Indicator light carbon composite Power switch resistors Fuse holder sprague capacitor Ground switch mojotone king cap capacitors 1ma potentiometers ceramic resistor mojo 756 power transformer 9-pin tube socket...
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