User Manual for Electro-Harmonix TRIBORO BRIDGE

Quick Start Guide

The Electro-Harmonix TRIBORO BRIDGE is a compact pedal offering three saturation algorithms: overdrive, distortion, and fuzz. To begin using the device, connect a 9VDC, 100mA, center-negative power supply to the power jack. Connect your instrument to the Input jack and your amplifier to the Output jack. The unit must be powered to pass a signal, even in bypass mode.

Controls and Jacks

The pedal features several controls to shape your sound:

• 1. VOL: Controls the overall output volume.
• 2. GAIN: Adjusts the amount of saturation. Note: In fuzz mode, high gain settings may introduce noise; use the Gate knob or reduce gain to manage this.
• 3. BASS/GATE: In overdrive and distortion modes, this acts as a bass control to boost or cut low frequencies. In fuzz mode, it controls the noise gate threshold.
• 4. TREBLE/TONE: In overdrive and distortion modes, this boosts or cuts high frequencies. In fuzz mode, it controls the cutoff frequency of a resonant low-pass filter.
• 5. TYPE Button: Cycles through saturation modes: Green (Overdrive), Orange (Distortion), and Red (Fuzz).
• 6. Footswitch and Status LED: Engages or bypasses the effect. The LED color indicates the active mode.
• 7. Input Jack: Connect your instrument here.
• 8. Output Jack: Connect to your amplifier.
• 9. Power Jack: Connect the 9VDC power supply here.

Input Contour Mode

The TRIBORO BRIDGE includes an optional Input Contour EQ that cuts bass and boosts mids for a more modern character. To enable or disable this feature:

1. Press and hold the TYPE button.
2. After two seconds, the LED will blink to indicate the status.
3. 8 quick blinks indicate the Contour EQ is enabled.
4. 4 slow blinks indicate the Contour EQ is disabled.

The setting is saved through power cycles.

Specifications

• Power Requirements: 9VDC, 100mA, Center-Negative.
• Input Impedance: 2.2MΩ.
• Output Impedance: 680Ω.
• Max Input: +1.5 dBu.
• Max Output: +2.1 dBu.