Dunlop Manufacturing CSP026 User Manual

MXR CUSTOM SHOP

Since its 1999 inception, the MXR Custom Shop has brought together
the world’s leading design engineers and the hottest guitarists—people
like Bob Bradshaw, Eddie Van Halen, Slash, Prince, Joe Perry, Lenny
Kravitz, Kirk Hammet, the Edge, Steve Lukather, and Zakk Wylde. The
result? Some of the coolest, ultra hot-rodded effect pedals ever known
and reintroductions of hard to get, out-of-production Classics. MXR has
now opened its Custom Shop to the public and will be releasing these
pedals in limited quantities through select dealers world-wide.

‘74 VINTAGE

CSP-026 PHASE SHIFTER

Coveted by both players and collectors—the MXR Phase 90 set
the benchmark for phasers, with its thick and rich tone. Our
in-house work horse, purchased in 1974 by Dunlop Senior
Engineer Bob Cedro, was meticulously spec’d and recreated as
the '74 Vintage Phase 90. The hand-wired board features select
resistors paired with hand-matched FETs to achieve the same
smooth and warm modulation as the original. The '74 Vintage
Phase 90 comes housed in the classic orange finished box and is
adorned with the unmistakable Script logo. Available only from the
MXR Custom Shop.

DESCRIPTION

- Hand-wired circuit board built with original-spec 1974 components

- Original high-quality Switchcraft Input/Output Jacks and Carling
bypass switch

- Hand-selected FETs, matched to produce deep and rich phasing

- Original Script logo and smooth orange finish

- Looks, sounds, and wired like it was in 1974!

DUNLOP MANUFACTURING, INC. P.O. BOX 846 BENICIA, CA 94510 U.S.A.

TEL: [phone] FAX: [phone] WWW.JIMDUNLOP.COM

92503006095

CONTROLS

1

SPEED knob regulates overall effect
rate (inactive in bypass mode)

2

FOOTSWITCH toggles effect
on/bypass

SPECIFICATIONS

INPUT IMPEDANCE: .................................................................. 500K Ohm

NOMINAL INPUT: ......................................................................... -20dBV

OUTPUT IMPEDANCE: .............................................................. 10K Ohm

OUTPUT LEVEL:............................................................................ -20dBV

SIGNAL TO NOISE ALL CONTROLS @ MID POSITION :.... >95dB ‘A’ weighted (Vref 1V RMS)

POWER DRAW:............................................................................ <2.2mA

POWER

The MXR CUSTOM SHOP ‘74 VINTAGE PHASE 90 can be powered by one 9-volt
battery accessed through the bottom of the pedal.

1

DIRECTIONS

To begin using your MXR CUSTOM SHOP ‘74 VINTAGE PHASE 90:
A) Run a cable from your guitar to the Vintage Phase 90’s Input jack and run another

cable from the Vintage Phase 90’s Output jack to your amplifier. (For starters,

select the clean channel of your amp).
B) Set the Vintage Phase 90’s Speed control to 12 o’clock.
C) Turn the effect on by depressing the footswitch.
D) Rotating the Speed knob in a clockwise motion will result in a faster phase effect,

2

and a counterclockwise motion creates slower effects.
E) Select your amp’s distortion channel and repeat steps B through D to hear how the

effect reacts differently with a dirty tone.

SAMPLE SETTINGS

Check out the sample settings below to hear some of the many great sounds the
Vintage Phase 90 is capable of.

CLASSIC 80’s ROCK

Speed knob to 9:00

PSEUDO LESLIE

Set Speed knob to 12:00