The resistor to change the level is the 150k which connects between the collector and base of the PNP transistor: 120k to reduce gain, 180k to increase it.' Rob Strandįor offboard wiring instructions check the offboard wiring project page. Their 'original-spec 1974 components' include metal film resistors. Theres a sucker born every minute - and too many of them end up in the bootweak pedal biz. M101 Phase 90 (and vintage models) 4 mA: Vintage. Possible mods: 'The resistor you pull to get rid of the feedback (and change the sweep) is the red 22k at the top of the schematic. The MXR Script Phase 90 is powered by one 9-volt battery (remove bottom plate to install), a 9-volt AC adapter such as the Dunlop ECB003/ECB003E. MXR - Phase 90 (script, reissue) An rebuild of the script phase 90 - even the pcb-layout is the same. EVH90 EVH Phaser: 9 mA: Hardwire: EVH117 EVH Flanger: 18vDC, 35 mA. The value of the zener diode depends on the FETs you use. Note: Quality is usable, but not perfect.
Tonepad_phase90.pdf 115.2 KB- Pez 90, Rev.6.Sep.30.2007Ī great-sounding phase shifter used by the likes of Eddie Van Halen ('Unchained') and many others. MXR 101 Phase 90 Pedal Schematic Contents: Schematics, PC Board Layout, Semiconductor Generic Reference Numbers.
