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Summary of Contents for Mojotone CANYON Series
- Page 1 WWW.MOJOTONE.COM...
- Page 2 BUILD. MODIFY. REPAIR.
- Page 3 The amp utilizes one 6V6 power tube and one 12AX7 preamp tube, giving the amp its famed lush harmonic composition. We chose our Mojotone American Vintage AV8C 15 Watt speaker to complement the 5F1 style circuit since it has a nice clean sound at its lowest volumes but introduces an articulate and unique grit as you increase the amp’s volume.
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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
12AX7 SE CTION 2: INVENTORY *optional based on order 12AX7 GZ34S 12AX7 12AX7 (1) solid pine cabinet* (1) Jensen C8R 8" 25watt 4Ω speaker* (1) chrome chassis 12AX7 (1) Mojo 760 EX power transformer (1) NOS 771 output transformer (1) eyelet board & backer board GZ34S GZ34S 12AX7 12AT7... -
Page 7: Tools
16uF (6) 4-40 x ’’ screw watt 68K (2) 6-32 x ’’ screw watt 100K (1) Mojotone Electrolytic King Cap 16µf @475v (2) 10-32 x 1 ’’ screw watt 220K WI R E S watt 1M (2’) 18 gauge stranded Black... -
Page 8: Component Identity & Orientation
TOLERANCE Black 1Ω The resistors that are included in your Brown 10Ω ± 1% Mojotone kit, all use the 4-band resistor color 7 x 10,000 = 100Ω ± 2% code for determining their values. The easiest 470,000 Ω Orange 1KΩ... -
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
SE CTION 7: CHASSIS ASSEMBLY power TRANS FORM ERS transformer output { Mount the power transformer by first transformer removing the black rubber tips on the ends of the mounting screws. Do NOT remove the nuts on the transformer. These are used to create an air gap for dissipating heat. - Page 11 1/2” nut driver. { Mount 9-pin tube socket using (4) 4-40 x 1⁄4” screws and keps nuts and tighten down with adjustable wrench and screwdriver. octal tube socket assembly RCA speaker jack assembly 9-pin tube socket assembly WWW.MOJOTONE.COM...
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Page 12: Circuit Board Assembly
SE CTION 8: CIRCUIT BOARD ASSEMBLY { Starting at one end of the front side of the board, identify the necessary components for each eyelet connection and place leads through the eyelet holes. Once inserted, bend the leads under the bottom of the board to hold them in place. When a capacitor and resistor are both PRO Tip: running between the same eyelet holes, you... - Page 13 ( ). There will be additional wires connected here once the circuit board has been installed. { Make Sure you don’t have any bad or “cold” solder joints by lightly pulling each wire after solder has set. WWW.MOJOTONE.COM...
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Page 14: Transformer Wiring
SE CTION 9: TRANSFORMER WIRING Powe r T rans former { Twist all matching pairs of wires coming out of the power transformer. fuse indicator potentiometer holder light { Measure length needed for each wire, allow yourself extra lead and cut to length. This will eliminate excess wire and free up space in your chassis. - Page 15 { Double check your wiring and begin speaker jack soldering all connections in this section rectifier power EXCEPT for the indicator light. There will tube socket tube socket be additional wires connected to it when wiring the tube sockets. WWW.MOJOTONE.COM...
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Page 16: Circuit Board Installation
SE CTION 10: CIRCUIT BOARD installation { Locate the two small fiber board mounting holes drilled into the chassis. { Tilt the chassis on it’s side and insert the 6-32 screws from the top of the chassis through to the outside. { Holding the screws in place, insert the completed backboard into the chassis, and push the... -
Page 17: Wiring The Sockets, Pots, Jacks & Power Cord
{ Install a 1MΩ resistor on the input jack closest to the potentiometer. Connect to the second jack with a jumper. { Connect the Yellow Yellow wires to the input jacks. { Connect the Green wire the ground lug on the input jack on the top right. WWW.MOJOTONE.COM... - Page 18 WIRING T HE HE AT ER FI LA M EN TS { Connect one end of the 100Ω resistors to indicator each lug of the indicator light. Make sure that light either lead that is connected to the indicator light does NOT touch the other or the bracket that holds the assembly to the chassis.
- Page 19 { Slide the heat shrink tubing over the solder connection and apply heat with a small flame to shrink it over the exposed wire to insulate. { Double check your wiring and begin soldering all connections in this section. ground lug A/C power cord WWW.MOJOTONE.COM...
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Page 20: Speaker Wiring & Installation
SE CTION 12: Speaker Wiring & Installation SPE AKER WIRING { Twist the two 15” lengths of Black and White White 18 gauge stranded wire together. RCA plug { Prepare the Black and White White wires and solder them to the RCA plug, White White to center and Black to shield. -
Page 21: Initial Chassis Testing
DO NOT short them to ground as this can damage the capacitors or cause them to explode. Test with your multimeter to make sure the voltages are below 10V DC before working on the amp. WWW.MOJOTONE.COM... -
Page 22: Chassis Installation
SE CTION 14: Chassis Installation { Install the 2 chassis mount screws into mount holes on top of cab. Turning the cabinet upside down may make it easier for chassis installation. Be mindful of tweed and tolex when 12AX7 PRO Tip: installing. -
Page 23: Sound Test
You can purchase these at solder on joint, capacitor in backwards, etc.. Mojotone.com. Here are a few resources we suggest. { The Tube Amp Book RESOURCE WE BSITES By Aspen Pitman. -
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 ircuit: 5F1 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...
- Page 28 BUILD. MODIFY. REPAIR.
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