Marshall Amplification 2203 Informacje Techniczne

METROAMP 100 WATT MASTER VOLUME STEP-BY-STEP INSTRUCTIONS V 1.2 AUGUST 2009 COPYRIGHT © 2009 METROPOULOS AMPLIFICATION INC

STEP 6: Installing the output tube sockets Locate (4) MICALEX OCTAL SOCKETS, (4) TUBE RETAINERS (EL34 OR 6550 size depending on your output tube type

STEP 7: Installing the preamp tube sockets Locate (3) 9 PIN MINIATURE SOCKETS WITH SHEILD (NOTE: 4 if using an additional tube for a mod), (8) #4 – 3

Step 8: Attaching the rear panel. Locate the ALUMINUM REAR PANEL, Super 77 or equivalent contact cement and (4) METRIC CAGE NUTS. Unlike the front

Step 9: Attaching the front panel, switches and pots. Locate the ALUMINUM FRONT PANEL, RED ROCKER SWITCH, BLACK ROCKER SWITCH and (6) ALPHA POTS (va

Step 10: Installing the knobs. Locate (6) Marshall SET SCREW KNOBS. Install one on each pot assuring that the pot shaft is rotated fully in either

Step 11: Wiring the PT (part 1) You can now start what I consider to be Section 2 of the assembly. Wiring inside the chassis. Fire up your solderin

STEP 12: PT wiring (part 2). Connect the PT high voltage secondary wires (RED, RED and RED with YELLOW stripe). Route the RED with YELLOW to the

STEP 13: Installing bias resistors, heater wiring (part 1). Locate (4) 1Ω 2W metal oxide resistors, color code BROWN-BLACK-GOLD-GOLD. These are ref

STEP 14: Wiring the heaters (part 2). Continue daisy-chaining sockets together until all of the output sockets are wired, as shown above. As

Step 15: Chassis wiring (part 1) The next several steps are dedicated to wiring inside the chassis in preparation for installing the component board

Introduction Welcome to the step-by-step instructions for the Metroamp 100 Watt Master Volume amp kit. We hope you will enjoy building your amp and

Step 16: Chassis wiring (part 2) Locate (1) 4.7kΩ 1-WATT CARBON FILM RESISTOR and (1) SOZO .1uf CAPACITOR. Solder the 4.7k in place between the bus

Step 17: Wiring the OT primary wires, installing output jacks. Twist the RED and BROWN wires from the OT and route to V5 and V6. Make sure to comple

Step 18: Wiring the output screen wires. Locate the 22g YELLOW wire and cut (3) 5” pieces and (1) 6” piece. These will be wired as jumpers for the

Step 19: Wiring the OT secondary wires (part 1). Locate the MARSHALL IMPEDANCE SWITCH, (2) #4 – 3/8” SCREW AND NUT, 10” of 18g BUSS and a 10” piece o

Step 20: Wiring the OT secondary wires (part 2). Your OT secondary wires should be routed as in the picture. The free end of the VIOLET negative fe

Step 21: Installing output screen and grid resistors. Locate (4) 5.6kΩ 1W (GREEN-BLUE-RED-GOLD) resistors and (4) 1kΩ 5W resistors. These are the o

Step 22: Installing balancing resistors and input jacks (part 1). Locate (2) 56kΩ 2W metal oxide resistors (GREEN-BLUE-ORANGE-GOLD). These are inst

Step 23: Installing the input jacks (part 2). Install the prepped Cliff jack in the HIGH SENSITIVITY chassis hole. Tighten the nut with a 15mm socke

Step 24: Wiring the PRE-AMP VOLUME pot. Locate (8”) COAX wire, (1/2”) 1/8” SHRINK TUBE. Strip ½” of insulation and braided shielding from one end

Step 25: Final chassis wiring prior to board install. Locate (1) 1,000pf ceramic disk cap (102K). Cut the leads to ½” in length and solder in pla

100 WATT MASTER VOLUME - BILL OF MATERIALS QTY DESCRIPTION QTY DESCRIPTION 1 JMP STYLE LARGE HEADBOX 4 MICALEX OCTAL SOCKET 1 METROAM

Step 26: Installing buss wire on the board. Locate the COMPONENT BOARD, (3’) 22g BUSS wire, and (2’) 18g SLEEVING. Our point-to-point terminal boar

Step 27: Wiring the component board. Locate each of the wire colors and prepare the component board for installation in the chassis by attaching the

Step 28: Attach chassis wires to component board. With your board wired for installation, you can now attach each of the chassis wires. These shoul

Step 29: Wiring the board into the chassis. With the under-board wires connected, flip the component board over and place it on the mounting screws.

Step 30: Wiring the board into the chassis (part 2). To complete the wiring of the inputs jacks, cut a small section of PINK wire and install as s

Step 31: Wiring the output tube grid wires. The final board wires to be attached are the output tube grid wires (ORANGE, GREEN). These can be tricky

Step 32: Loading the component board! With the board fully wired into the chassis, the fun part can finally begin! Install the board securing nuts a

Step 33: Installing the IEC socket and mains fuse. Locate the IEC AC SOCKET, (1) FUSE HOLDER, (2) #6 3/8” screw and Nyloc nuts, (10”) ORANGE wire, (

Step 34: Cable ties and final inspection. Your chassis should now be fully assembled and ready for the testing and powering up procedures documented

TESTING SECTION: PART 1 WARNING!!! WARNING!!! WARNING!!! WARNING!!! WARNING!!! WARNING!!! IT CAN NOT BE STRESSED ENOUGH THAT TUBE AMPLIFE

100 WATT MASTER VOLUME RESISTORS QTY VALUE SIZE TYPE COLOR CODE 1 820 2 WATT METAL OXIDE GRAY-RED-BROW

TESTING SECTION: PART 2 Locate and install (1) 1 AMP FUSE and (1) 4 AMP FUSE (3A for 220/240V operation). Also locate and install (3) 12AX7 preamp t

TESTING SECTION: PART 3 Assuming there were no fireworks upon powering on, you can begin taking measurements. Set your meter to AC volts, with th

TESTING SECTION: PART 4 Assuming all has gone well to this point, with your meter still set for DC 500V measure both terminals of the HT fuse holder.

TESTING SECTION: PART 5 With all the tube sockets tested and receiving the correct voltage on each pin, you can install the output tubes. Once in pl

TESTING SECTION: PART 6 TECH NOTE: On the subject of biasing, we should discuss why we break from authenticity and install the 1Ω resistors. These

APPENDIX • FULL CHASSIS • • FULL CHASSIS LAYOUT AND WIRING DIAGRAM • • BOARD BUSS WIRE DIAGRAM • • BOARD WIRING DIAGRAM (COLORS AND LENGT

100 WATT MASTER VOLUME – CHASSIS

100 WATT MASTER VOLUME – COMPLETE CHASSIS

100 WATT MASTER VOLUME – BOARD BUSS WIRES

100 WATT MASTER VOLUME – BOARD COMPONENTS

STEP 1: Preparing to assemble the kit. When your kit arrives, we suggest unpacking it and examining the parts. Get familiar with what we have shipp

100 WATT MASTER VOLUME KIT - VOLTAGE CHART PIN 1 PIN 2 PIN 3 PIN 4 PIN 5 PIN 6 PIN 7 PIN 8 PIN 9 V1 12AX7 217 SIGNAL 2 3.15 AC 3.15 AC

100 WATT MASTER VOLUME – CHANGES FOR 6550 OUTPUT TUBES CHANGES NECESSARY FOR 6650 OUTPUT TUBES: • BIAS DROPPING RESISTOR CHANGE FROM 27K TO 15K

100 WATT MASTER VOLUME – 220, 240V AC WIRING

METROAMP TRANFORMER DIAGRAMS

MM MP100-460 POWER TRANSFORMER WIRING

OPTIONAL MERCURY MAGNETICS OUTPUT TRANSFORMERS

STEP 2: Installing the power transformer (PT) When you are ready to start assembling, place the chassis on the bench with the front (pots, switches,

STEP 3: Installing the output transformer (OT) Locate the C1998 output transformer (abbreviated as “OT”), (2) ½” GROMMETS and (4) #10 –3/8” machine

STEP 4: Installing the choke and filter caps (part 1) Locate the Mercury Magnetics MMC-3H choke, 3/8” RUBBER GROMMET and (4) #6 – 3/8” machine screw

STEP 5: Installing the filter caps (Part 2) Part 2 of the filter caps installation is mounting them on the chassis with the necessary ground lugs. L