British 18W Layout 12AX7 Version layout by Robert Hull pot has rear mounted SPDT switch all capacitors are 400V unless otherwise stated all resistors are 1/2W unless otherwise stated all wire is 20 gauge, 600V unless otherwise stated Refer to link below for parts list and full assembly instructions Refer to link below for full sized turret board construction template(s) http://tubedepot.com/kit-british18wcombo.html [email protected] T1 47K 47pfd 470K .01 .01 47ufd 50V 22ufd / 450V 150 / 10W 8.2K R6 T2 C1 R1 100K 820 47ufd 50V .0047 .01 .01 470K 470K R16 C10 R21 R20 8.2K 100K 47ufd 50V 68K 470K 470K 8.2K 68K .022 .047 .0047 820 470K 470K .022 .022 .022 1 2 3 4 5 6 6 7 8 1 2 3 4 5 6 6 7 8 1 2 3 4 5 6 6 7 8 1 2 3 4 5 6 6 7 8 1 2 3 4 5 6 6 7 8 1 2 3 4 5 6 6 7 8 power standby fuseholder 1A SB fuse VOLUME TONE 500 pfd .0047ufd VOLUME TONE SPEED 1M 1M 100K 33K 33K wire from fuse holder wire to pwr switch AC safety grounding point power grounding point 16 8 4 com grounding washer soldered to buss wire braided shield mount terminal under stand-off impedance selector High Voltage w/ CT 6.3V filament w/ CT 5.0V/6.3V rectifier filament 120 / 230 AC input .0047 100K INTENSITY 500mA speaker output jacks vibrato on/off footswitch jack AC input EZ81 220K output transformer secondary wires output transformer primary wires EL84 V5 EL84 V4 V6 12AX7 V1 12AX7 V2 12AX7 V3 1st gain stage phase inverter oscillator & 2nd gain stage power transformer T1 F2 C18 6.3V pilot lamp R30 F1 C17 R27 R29 R28 R31 C19 R26 R24 R23 R25 R32 C15 C14 R8 R9 C20 C8 C9 C7 R19 R18 C5 R22 C11 C6 C16 C4 C2 C3 R15 R13 R12 R11 R10 T4 T3 T7 T6 T5 J1 J2 J3 J4 VR1 VR2 VR3 VR4 VR5 VR6 SW1 SW2 Cx3 Cx2 Rx4 Rx3 Rx2 Rx1 Rx5 J5 J6 J7 SW4 500K-A 1K-L 1M-L 500K-A 500K-A 500K-A use terminal when shock mounting tube socket T11 T13 T15 T19 T9 T21 T23 T27 T25 T31 T33 T35 T29 T37 T39 T49 T55 T45 T47 T51 T53 T43 T57 T8 T10 T14 T12 T18 T20 T22 T24 T16 T28 T30 T34 T32 T38 T36 T44 T48 T41 T42 T50 T40 T56 T52 T46 T58 T26 T17 T54 100K T59 T60 18AWG 18AWG 18AWG 18AWG 18AWG 18AWG 18AWG 18AWG signal grounding point 1M connect to "A" on rear of tremolo intensity control tremolo range switch mounted on front panel (optional mod) "A" 20AWG buss wire