Eventide

Instant Phaser

Effect

Main Details
Maker Eventide Company
Function
Additional Model ID PS-101
Channels/Tracks
  • 1 × Channel (Main input)
  • 1 × Channel (Main output)
  • 1 × Channel (Aux output)
Form Factor 19" Rackmount
Signal Path Analog Hardware
Made In USA
Date Produced 1971
Dimensions 480 x 89 x 260 mm (W x H x D) + 20 mm knobs
Weight 10 lb
Power Source USA 115 V AC / Europe 220 V AC, 50-60 Hz, 20 W, captive mains lead
Frequency Response 20 Hz to 15 kHz, +1 dB, -0 dB (phasing out)
Notes Input & output signals are unbalanced to ground unless option O4 (transformer) is installed.

One can use either an Envelope Follower, an Oscillator, or Remote control to vary the phasing effect, or set a fixed Manual level.

Pseudo-stereo (Main+Aux) output, with phasing still present even when mixed to mono. Main output uses four Fixed Phase Shift sections, Aux output uses two.

Units used by Isao Tomita, Yes, The Grateful Dead, Chicago, Led Zeppelin, Todd Rungren, Hot Tuna, The Edgar Winter Group, and over 100 major Studios, including CBS, EMI, Media Sound, The Record Plant, and Electric Lady.

The beautiful old lamps on this unit are larger than LEDs and a joy to behold!
Additional Specifications
Frequency Response (Max Depth) 50 Hz to 20 kHz (+1/2 dB)
Frequency Response (Min Depth) (-20 to +6 dB, depending on input frequency and phasing control setting)
Distortion <1% (at +4 or +8 dBm)
Signal to noise ratio >64 dB
Phase shift >1200 degrees (at 1 kHz)
Envelope Follower Threshold -6 dB peaks required for full phasing with threshold control fully clockwise
Remote control input 0 to +10 V for full control range. Internally strappable for 0 to +5 V Voltage available at front panel connector for driving remote control potentiometer.
Displays/Indicators
Type: Green lamp
Indication: Bypass
Scale: In/Out
Type: Green lamp
Indication: Remote
Scale: On/Off
Type: Yellow lamp
Indication: Oscillator, Internal
Scale: On/Off
Type: Red lamp
Indication: Phase shift
Scale: Pulses on/off indicating phasing speed
Type: Red lamp
Indication: Manual
Scale: On/Off
Type: Cyan lamp
Indication: Envelope Follower
Scale: On/Off
Type: White lamp
Indication: Power
Scale: On/Off
Connections
Remote (front panel)
Connector: 1/4" Phone Jack (6.35mm)
Remote
Connector: Terminal Block
Description: 3 Way
Input
Connector: Terminal Block
Description: 3 Way
Aux output
Connector: Terminal Block
Description: 3 Way
Main output
Connector: Terminal Block
Description: 3 Way
Controls
Parameter: Bypass
Control Type: Toggle Switch
Range: In/Out
Parameter: Depth
Control Type: Rotary Pot
Parameter: Oscillator speed
Control Type: Rotary Pot
Range: 0.1 to 10 Hz
Parameter: Manual phase shift
Control Type: Rotary Pot
Parameter: Envelope Follower Threshold
Control Type: Rotary Pot
Parameter: Envelope Follower Release Time
Control Type: Rotary Pot
Range: 0.1 to 5 seconds
Parameter: Control mode
Control Type: Rotary Switch
Range: Manual / Oscillator / Envelope / Remote
Parameter: Power switch
Control Type: Toggle Switch
Range: On/Off

Comments

Login or Register to post a comment