Description

The Fusion Preamp Interface is a robust, flexible interface designed for safely connecting and controlling Leslie® speaker cabinets. Not limited to just organs, the FPI expands Leslie® connectivity to any ¼” audio source with unprecedented ease.

The built-in preamp provides 26dB of clean gain with a simple ¼” audio input. It also features tone controls, hi-gain switch, low cut switch, and effects loop.

The ¼” TRS speed control input is compatible with any CU-1 half-moon style switch or dual footswitch. A COT (Chorale/Off/Tremolo) screw terminal allows optional hardwiring of speed control.

Some Leslie® amplifiers have been modified with an EIS Trek II or other solid-state relay to add a Stop mode. The FPI is compatible with both 3-speed and 2-speed Leslie® amps. Two Y/N (Yes/No) switches select either Fast/Stop/Slow mode (Y position) or Fast/Slow mode (N position) for the 122 and 147 outputs individually.

All models come with all features included in the base model FPI-D-EFX, listed under “Features” section below. Other standard models have expanded connectivity options, including 11-pin input or output, and 6-pin input.

Benefi­ts:

  • Allows simultaneous Leslie® 122/147 usage.
  • Safe, low-voltage DC speed switching for 122 and 147 Leslie® operation.
  • Capability to mount inside or outside of Leslie® cabinet or organ enclosure.
  • Plug any ¼” audio source into your Leslie®.
  • Low-cut switch eliminates muddiness for guitars or other higher-register instruments.
  • Hi-gain switch means Lo-Z instruments (electric guitar or bass, for example) can be plugged in directly.

Features:

  • 122 and 147 Outputs: Standard on all models, can be used simultaneously.
  • Other Input/Output Options: Other models include 11-pin or 6-pin input and 11-pin output.
  • Audio Input: Standard on all models, ¼” jack.
  • Speed Control: 1/4″ TRS Input – compatible with any CU-1 half-moon style switch or dual footswitch.
  • Y/N Switches: Allows for 3-speed (Slow/Stop/Fast) or 2-speed (Slow/Fast) operation, for 122 and 147 individually.
  • COT Terminal: Allows hardwiring of CU-1 hand switch or dual footswitch to unit for speed control.
  • Preamp: Volume and tone control, hi/lo gain and low-cut switches, effects loop.
  • Mounting Kit: Comes with a mounting kit for mounting onto Leslie cabinet or organ enclosure.

Standard Models Include:

  • FPI-D-EFX: 122/147 6-Pin Output
  • FPI-D11-EFX: 11-Pin Input, 122/147 6-Pin Output
  • FPI-D11-11-EFX: 11-Pin Input, 11-Pin Output, 122/147 6-Pin Output
  • FPI-D6-EFX: 6-Pin Input, 122/147 6-Pin Output
  • FPI-D6-11-EFX: 6-Pin Input, 11-Pin Output, 122/147 6-Pin Output

The FPI is fully configurable with a wide variety of input and output options. Contact us for additional modifications or customizations.

Leslie® is a registered trademark of Hammond Suzuki Corporation.

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ConditionBrand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.Learn more
Brand
Model
  • Fusion FPI-D11-11-EFX
Finish
  • New
Categories
Year
  • 2025
Made In
  • United States

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Colton, CA, United States
Joined Reverb:2025

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