StewMac ’65 P-REVERB Assembly Instructions Manual

15w combo amp kit original aa1164 circuit

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'65 P-REVERB
C O M B O A M P K I T
ORIGINAL A A1164 CIRCUIT
A S S E M B LY I N S T R U C T I O N S
Sparkling bright,
perfect for the surf.
With loads of
helpful tips!
15W

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  • Page 1 ’65 P-REVERB C O M B O A M P K I T ORIGINAL A A1164 CIRCUIT Sparkling bright, perfect for the surf. A S S E M B LY I N S T R U C T I O N S With loads of helpful tips!
  • Page 2: Table Of Contents

    COPYRIGHT WARNING This material is protected by copyright and has been created by and solely for the purposes of StewMac . You may not sell, alter or further reproduce any part of this material, or distribute it to any other per- son .
  • Page 3: About This Iconic Amp

    Suggested listening while you build this kit: the Beach Boys’ “Surfin’ USA” and the great sounds of Ryan Adams . StewMac ICON KITS bring classics that are no longer made, or are simply unaffordable, within reach . And the best part is you get to build them with your own hands .
  • Page 4: How To Build This Kit

    GZ34 Reverb pedal AC switch TR1: 125P1B TR2: 125A10B TR3: 125A20B 1 amp To tube heaters slow-blow fuse and pilot light #10734 © 2018 StewMac Resistor Capacitor Electrolytic Cap. Potentiometers Diode Transformer Jack Ground Shielded Preamp tube Power tube Rectifier tube ’65 P-REVERB...
  • Page 5: Parts List

    (1) Screw for cable clamp (4) Chassis strap screw and nut (6) Rubber grommet (1) Faceplate/backplate set (1) Strain relief for power cord (2) Eyelet boards set (1) Filter cap mounting clamp (2) Insulator boards set stewmac.com © 2018 StewMac...
  • Page 6 (1) Output transformer BUT: Trimming the insulation still works better. (1) Reverb driver Wire (1) White wire (1) Green wire (1) Speaker wire (two leads) stewmac.com © 2018 StewMac...
  • Page 7: Tools And Supplies

    Drill with a 5/32" bit #3000 For mounting eyelet board and filter cap Guitar Tech Screwdriver Set Ruler Item #4905 StewMac Shop Rule Digital multimeter #1606 Item #3618 Fieldpiece Pocket Multimeter Wire Stripper Snuffer stick (bleed resistor) Item #1552 Snuffer Stick Copper shielding tape Item #0028 2"...
  • Page 8: Amp Voltages Are Seriously Dangerous

    To discharge a capacitor, clip the snuffer stick lead to ground—preferably a mounting bolt on the power transformer . Hold the tip of the stick to the cap’s positive lead and use your multimeter to watch the voltage drain to less than 18V . stewmac.com © 2018 StewMac...
  • Page 9: How To Read Resistor Values

    Installing capacitors with the polarity backwards will make the circuit malfunction and quickly destroy the capacitor— even causing it to explode . x1,000 +/- 5% +/- 5% Blue Gray Orange Gold K = 1,000 Read this band first (closest to an end) stewmac.com © 2018 StewMac...
  • Page 10: Prepping The Cabinet

    Don’t drill through the cabinet! Use a piece of masking tape on your drill bit STEP 2 STEP 3 to mark the depth, or use a StewMac Solder the speaker plug Solder the speaker leads Depth-stop Drill Bit (item #1712) .
  • Page 11 Cut out the tube replacement chart Criss-cross on page 51 . Put a thin coat of glue tightening or contact cement on the back prevents warping. and glue it to the inside wall of the cabinet . stewmac.com © 2018 StewMac...
  • Page 12: Prepping The Eyelet Boards

    5/32" drill board . Drill two 5/32" mounting holes through this pair of boards . Set the bit . Separate the boards and set the insulator board aside for later . insulator board aside for later . stewmac.com © 2018 StewMac...
  • Page 13: Tips For Great Soldering

    Snip cloth wrap . an eyelet is filled . Keep the iron on the connection for a second longer to allow time for all of the flux to cook Wrap out of the joint . Solder stewmac.com © 2018 StewMac...
  • Page 14 REVERB DRIVER (mounted outside) OUTPUT TRANSFORMER (mounted outside)
  • Page 44: Installing The Fuse, Lamp, And Knobs

    . If you don’t have one, a couple of blocks of wood will get you by just fine . stewmac.com © 2018 StewMac...
  • Page 45: Testing And Troubleshooting

    Set your multimeter to 500V DC and connect the negative lead to ground . Once the negative lead is secured to ground, measure the DC voltage at eyelet 54 for your B+ voltage . This should be roughly 420V DC . stewmac.com © 2018 StewMac...
  • Page 46 41 . You should ume . If the amp behaves as it should, have continuity between these two keep increasing the volume . It should points . start to break up nicely as you increase the volume . stewmac.com © 2018 StewMac...
  • Page 47: Final Assembly

    Bass and Treble controls to dial this StewMac is here to help! in . With humbuckers, try turning the For more than fifty years, StewMac bass down a bit . Give singlecoils a has supplied instrument builders and little more bass .
  • Page 48: Learning More: Secrets Revealed In The Schematic

    . part of the amplifier, the first pre-amp tube in the Gain stage . stewmac.com © 2018 StewMac...
  • Page 49: Aa1164 Circuit Schematic

    Power stewmac.com © 2018 StewMac...
  • Page 50: More Iconic Amp Kits From Stewmac

    . It’s all here: clarity, distortion, and rectifier tube sag . D I F F I C U LT Y H O U RS : #10737 22 WATTS / 12" SPEAKER / ORIGINAL AB763 CIRCUIT stewmac.com © 2018 StewMac...
  • Page 51 This isn't a pocket-sized digital simulation; this is the real deal! Listen to Dick Dale’s “Misirlou” while doing this easy build . D I F F I C U LT Y #10733 ORIGINAL 6G15 CIRCUIT H O U RS : stewmac.com © 2018 StewMac...
  • Page 52: Aa1164 Wiring Diagram

    © 2018 StewMac...
  • Page 53: Tube Replacement Chart

    I C O N K I T S DANGER: Unplug the amp before changing tubes. Tube locations from left to right: 5AR4 12AX7 12AX7 12AT7 12AX7 (GZ34) (ECC83) (ECC83) (ECC81) (ECC83) Use only 1-amp slow-blow fuse. stewmac.com © 2018 StewMac...
  • Page 54 © 2018 StewMac...
  • Page 55 © 2018 StewMac...
  • Page 56 StewMac tools + ideas for guitarmaking 21 N . Shafer St ., Athens, OH 45701 800-848-2273 stewmac .com ©2018 StewMac . All rights reserved . #i10734 Updated October, 2018...

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