
115
Turning your amp on for the first time
Step 1: Make sure your AC power cord is NOT plugged in. Do NOT install any of the tubes yet. Do not plug a
speaker into the speaker jack. Do not plug any instruments into the input jacks. If at any point in this process, you
smell smoke, see sparks, or hear any loud electrical hum noises, immediately pull the AC power cord from the wall
socket.
Step 2: Do not test your amp on a metal table or any surface that can conduct electricity. Situate yourself and your
amp so that the AC power outlet you will be using is within arm's length.
Step 3: Install your amplifier chassis into the cabinet or enclosure that you should have. You should never apply
power to the amplifier while it is not inside its cabinet or enclosure. If you insist on supplying power to the
amplifier while it is not inside its cabinet or enclosure, the safest way to do so is with the chassis laying on a non-
conductive, flame retardant surface with the transformer side facing down and the open side of the chassis facing
up, making sure that no foreign objects (especially any of your body parts) are touching any part of the amp.
Step 4: Install the 3A (120v) or 2A (240v) fuse into the panel mounted fuse holder on the back of the chassis. You
can tell the 2A or 3A fuse apart from the 500mA fuse because the 2A or 3A fuse will have a small “2” or “3”
printed on it and the 500mA fuse will have “500” printed on it somewhere. You can also tell because the the 2A or
3A fuse will have a thicker conductive wire running through the middle of it than the 500mA.
Step 5: Turn the amplifier's power switch on, but still do not plug the power cord in yet.
Step 6: Orient the amp so that you can see the indicator light. When you plug the power cord into the AC power
supply, you should be able to see the indicator light come on immediately. This means, at the very least, AC
power is getting to the power transformer and that the power transformer is working.
Содержание Classic Brit 50
Страница 9: ...9 Chassis Assembly Step 1 Add grommets...
Страница 11: ...11 Step 3 Add the tube sockets red arrows...
Страница 14: ...14...
Страница 16: ...16 Step 5 Add flat mount fuse holder Use 1 x M3 screw and 1 x M3 nut...
Страница 20: ...20 7b Mount all the potentiometers and the four remaining jacks...
Страница 21: ...21 Wiring power section...
Страница 24: ...24 Step 3 Connect the OFF side of the MAINS switch to the center lug of the panel mounted fuse holder...
Страница 25: ...25 Step 4 Attach the remaining terminal on the panel mount fuse holder to the L terminal of the AC receptacle...
Страница 30: ...30 Step 9 Connect ON side of the STANDBY switch to one end of the flat fuse holder...
Страница 31: ...31 Power Wiring Drawing...
Страница 32: ...32 Step 10 Add bus wire to the speaker jacks Solder on the green arrows not on the red arrows yet...
Страница 33: ...33 Step 11 Connect the black wire from the OT secondary Common to the Sleeve bus and solder...
Страница 34: ...34 Step 12 Connect the yellow orange and purple wires to the rotary switch as shown...
Страница 43: ...43 Tube Side Wiring...
Страница 48: ...48 Step 25 Mount the input jacks and connect the black wires to the ground bus at the green arrow...
Страница 50: ...50 Chassis Wiring Layout...
Страница 51: ...51 Populating the Circuit Board Step 1 Run bus wire along turret lugs as shown Solder the bus wire jumps...
Страница 52: ...52...
Страница 53: ...53 Step 2 Insert trimpot so that one wiper is not inserted into a turret lug as shown...
Страница 55: ...55 Drawing of component placement so far DO NOT solder the red arrows yet...
Страница 56: ...56 Step 3a Add the large capacitors that were left out of the previous step and solder all connections...
Страница 57: ...57 Completed Board Component Placement Picture...
Страница 61: ...61 Example of wire connections to top tier of turrets...
Страница 65: ...65 Step 9 add the 3 hex standoffs at the red arrows Use M3 screws...
Страница 66: ...66 Top side component picture showing the location of the standoffs in green...
Страница 77: ...77 Tube Socket Wiring...
Страница 78: ...78 Step 1 Attach the first white wire from the 47pF 100K 022uF junction to pin 6 of V3...
Страница 79: ...79 Step 2 Attach yellow wire from 47pF 82K 022uF junction to pin 1 of V3...
Страница 80: ...80 Step 3 Attach brown wire from 1uF 1M junction to pin 7 of V3...
Страница 82: ...82 Step 5 Connect the 2nd yellow wire from the 1M 022uF junction to pin 2 of V3...
Страница 84: ...84 Step 7 Connect brown wire from 10K 2W 32uF 32uF capacitor to pin 6 of V2 green arrow solder pin 6 of V2 now...
Страница 85: ...85 Step 8 Attach white wire from the 100K 33K 500pF junction to pin 8 of V2...
Страница 86: ...86 Step 9 Connect yellow wire from 68uF 820Ohm junction to pin 3 of V2...
Страница 87: ...87 Step 10 Connect brown wire from 470K 470K junction to pin 2 of V2...
Страница 88: ...88 Step 11 Connect white wire from 022uF 100K junction to pin 6 of V1...
Страница 89: ...89 Step 12 connect yellow wire from 68K 68K junction to pin 7 of V1...
Страница 90: ...90 Step 13 Connect brown wire from 022uF 100K junction to pin 1 of V1...
Страница 91: ...91 Step 14 Connect white wire from 68K 68K junction to pin 2 of V1...
Страница 92: ...92 Step 15 Connect the yellow wire from 68uF 2 7K junction to pin 8 of V1...
Страница 93: ...93 Step 16 Connect remaining brown wire to pin 3 of V1...
Страница 94: ...94 Wiring diagram for Tube Side For high Res image click here http byocelectronics com brit50tubesidewiring pdf...
Страница 95: ...95 Wiring Potentiometer Side Step 1 Attach the first black wire to the ground bus green arrows...
Страница 96: ...96 Step 2 Connect the white wire from the 1uF 10K junction to lug 3 of the PRESENCE potentiometer green arrows...
Страница 98: ...98 Step 3c Connect a piece of black wire from lug 1 of the MIDDLE pot to the ground bus...
Страница 99: ...99 Step 4 Connect the brown wire from 022uF to lug 2 of the TREBLE pot...
Страница 100: ...100 Step 5 Connect next black wire to ground bus as shown...
Страница 101: ...101 Step 6 Connect yellow wire from 022uF to lug 2 of the MIDDLE pot...
Страница 102: ...102 Step 7 Connect white wire from 022uF to lug 1 of the TREBLE pot Solder the connection now...
Страница 103: ...103 Step 8 Connect brown wire from 500p to lug 3 of the TREBLE pot...
Страница 104: ...104 Step 9 Attach next black wire to the ground bus...
Страница 105: ...105 Step 10 Connect lug 1 of both LOUDNESS pots to the ground bus...
Страница 106: ...106 Step 11 Connect yellow wire from 470K 500p junction to lug 2 of the LOUDNESS 1 BRIGHT TREBLE pot...
Страница 107: ...107 Step 12 Connect the white wire from 470k to lug 2 of the LOUDNESS 2 NORMAL pot...
Страница 108: ...108 Step 13 Connect the brown wire from 022uF to lug 3 of the LOUDNESS 1 BRIGHT TREBLE pot...
Страница 109: ...109 Step 14 Connect the final brown wire from 022uF to lug 3 of the LOUDNESS 2 NORMAL pot...
Страница 112: ...112 Diagram for Potentiometer Side Wiring For High Res image click here http byocelectronics com brit50potsidewiring pdf...
Страница 113: ...113 120V Layout Go to http www byocelectronics com brit50 120layout pdf for high res PDF...
Страница 122: ...122 Diagrams and Schematic...
Страница 123: ...123 Circuit board top side...
Страница 124: ...124 Circuit Board Wiring showing from top side...
Страница 125: ...125 Power Section and Heater Wiring for hi res pdf go to http www byocelectronics com brit50powerwiring pdf...
Страница 126: ...126 Schematic For hi res pdf go to http www byocelectronics com brit50schematic pdf...