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Electro-Harmonix 22500 User Manual

Electro-Harmonix 22500
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7
22500
Dual Stereo Looper
Congratulations on your purchase of the Electro-Harmonix 22500 Dual
Stereo Looper. Although the 22500 has a compact footprint it is loaded
with numerous powerful features, including:
Dual Stereo Loops with either independent or locked loop lengths
Sequential Looping enables verse/chorus switching
Parallel Looping allows simultaneous playback of two loops
Selectable Microphone input with adjustable gain and Phantom Power
Reverse and Octave functions at the touch of a button
Undo-Redo your last overdub
Overdub with adjustable feedback amount
Create loop lengths that are completely free-form, locked to each other
or quantized to internal rhythms
100 Loop Banks per SD Card, each bank containing up to 2 loops
Rhythm Guide with 16 built-in drum loops
Footswitch selectable for All Stop, Tap-Tempo, or Rhythm Start/Stop
USB Port enables backup/restore to PC or MAC
Includes high capacity SD Memory Card for up to 12 hours of loop time
Optional external Bank-Up/Down Foot Controller (sold separately)
9.6VDC/500mA power supply included
WARNING:
Your
22500
comes equipped with an Electro
-
Harmonix 9.6
V
-
500mA power supply. The 22500 requires 240mA at 9VDC with a center negative
plug and does not accept batteries. Using the wrong adapter may damage your
unit and void the warranty. Please do not exceed 10.5VDC on the power plug.

Table of Contents

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Electro-Harmonix 22500 Specifications

General IconGeneral
BrandElectro-Harmonix
Model22500
CategoryMusic Equipment
LanguageEnglish

Summary

MODES – Selecting / Types / Use

BANK

Allows selection of current loop bank, up to 100 banks per SD card.

LOOP

Changes settings for Loop Lock/Freeform, Quantize, Parallel/Sequential, and 1-Shot modes.

OVERDUB

Sets loop audio volume loss for each pass while overdubbing.

TRIGGER

Triggers loop recording automatically based on input signal threshold.

R TEMPO

Adjusts the tempo for Loops A, B, and Rhythm loop in BPM.

R TYPE

Selects the Rhythm type from 16 built-in factory rhythms.

R LEVEL

Sets the volume of the Rhythm loop from 0 to 100.

ERASE

Erases Loop A, Loop B, or both loops simultaneously.

Recording / Playing / Overdubbing Loops

START RECORDING

Initiates loop recording for Loop A or B, with options for quantization.

END RECORDING / SET LOOP LENGTH

Ends loop recording, sets length, and starts playback.

LOOP PLAY/STOP

Controls playback and stopping of recorded loops.

OVERDUB START/STOP

Enters and exits overdub mode for loops.

LOOP Mode Explanation

Quantize, Parallel/Sequential, Loop Lock Settings

Defines loop interaction, quantization, and locking mechanisms.

1-Shot Mode

Plays a loop only once through, then stops.

Parallel Loop Recording/Playback Examples

Freeform Mode

Loops play simultaneously, independently or with sync.

Quantize ON

Loops play simultaneously, quantized to nearest bar.

Loop Lock Mode Examples

Loop Lock Parallel Quantize OFF

Loop B's length automatically set by Loop A, not quantized.

Loop Lock Parallel Quantize ON

Loop B's length tied to Loop A, quantized to nearest bar.

Sequential Loop Recording/Playback Examples

Freeform Mode

Loops switch instantly or at end of loop, independently.

Loop-Lock Mode

Loops change over when current loop ends, length tied to Loop A.

CONTROLS & INDICATORS

LEFT INPUT TOGGLE SWITCH

Selects between 1/4" instrument or XLR microphone input.

MIC TRIM Knob

Fine-tunes gain for the XLR MIC input jack.

PHANTOM POWER TOGGLE SWITCH

Applies phantom power to the XLR MIC input jack.

INPUT GAIN Knob

Sets overall gain for LEFT/RIGHT inputs and output level.

CLIP L & R LEDs

Indicates when input signal exceeds maximum input level.

LOOP A & LOOP B Knobs

Set the output volume for their respective loops.

REC LEDs for LOOP A & LOOP B

Indicates loop activity (recording/overdubbing).

MEM LEDs for LOOP A & LOOP B

Indicates loop memory status and undo/redo availability.

PLAY LEDs for LOOP A & LOOP B

Indicates loop playback status.

MODE/VAL Knob

Cycles through modes and adjusts selected mode values.

SELECTING MODES

Method for navigating and selecting operational modes.

REVERSE Button

Enables/disables the Reverse function for each loop.

OCTAVE Button

Cycles loop speed through half, double, or original speed.

TRIGGER LEDs

Indicates when TRIGGER mode is activated for a loop.

LOOP A & LOOP B FSWs

Footswitches control loop recording, playback, and overdubbing.

STOP/TAP FSW

Controls stop, start rhythm, and tap tempo functions.

RHYTHM Button

Enables/disables the Rhythm loop playback.

TAP ON Button

Enables/disables tap tempo function.

TEMPO & TAP TEMPO Operations

TEMPO

Displays and adjusts the current tempo in BPM.

TEMPO ADJUSTMENTS

Methods for adjusting tempo via MODE knob or STOP/TAP FSW.

USING TAP TEMPO

Procedure for setting tempo by tapping the STOP/TAP FSW.

TIME STRETCH & COMPRESSION

Audio time adjustment without pitch change.

LOOP A SETS BANK DEFAULT TEMPO

Loop A's initial recording tempo sets the bank's default.

RETURN TO ORIGINAL TEMPO

Resets tempo to Loop A's original recorded tempo.

NON-QUANTIZE TEMPO CHANGES

Tempo affects loops even when quantization is disabled.

UNDO/REDO Operations

PERFORMING UNDO/REDO

How to execute undo and redo for loops.

INITIAL LOOP UNDO

Erases the entire initial loop; no redo available.

OVERDUB LOOP UNDO/REDO

Removes or restores the last overdub layer.

I/O & POWER Connections

L/MONO Input

1/4" input for instruments; impedance and signal level details.

MIC Input

XLR input for microphones; impedance and phantom power.

R Input

1/4" Right input for instruments; impedance and signal level.

L/MONO Output

1/4" Left output for Loop A, B, and Rhythm loop signals.

R Output

1/4" Right output for Loop A, B, and Rhythm loop signals.

FC Jack

Connection for optional Foot Controller.

9V Power Jack

Connects the supplied AC adapter.

SIGNAL PATH

Left/Right Audio Paths

Explains how left and right channels are processed.

EXPLANATION OF MODES

BANK Mode

Allows selection of current loop bank from SD Card.

LOOP Mode

Sets parameters for loop creation and interaction.

Digit 1 – F or L

Determines relationship between Loop A and B lengths (Freeform/Lock).

Digit 2 – Loop Lock Multiple

Sets multiplier for Loop B's length relative to Loop A.

Digit 3 - Quantize Modes

Sets quantization for loops to exact bar/beat lengths.

Using Quantize Modes 2, 3, 4, 6

Details on quantizing loops to 2/4, 3/4, 4/4, and 6/8 time signatures.

b: beat Quantize

Quantizes loop lengths to the nearest beat (expert setting).

Digit 4 – Parallel or Sequential Modes

Determines interaction between Loop A and B (simultaneous/one-at-a-time).

1-SHOT Mode

Plays a loop only once through.

OVERDUB Mode Settings

TRIGGER Mode Setup

R TEMPO Mode Operation

R TYPE Mode Selection

R LEVEL Mode Functionality

ERASE Mode Procedure

MEMORY CARD, USB, IMPORTING AUDIO

SDHC Memory Card

Specifications and requirements for SDHC cards.

22500 Requirements for SDHC Cards

Minimum/maximum card size, speed, and recording time.

SD Card Removal

Procedure for safely removing the SD card.

USB Port

Transferring files to/from computer via USB.

22500's SD Card File System

Organization of files and folders on the SD card.

Backing Up Files

Method for backing up loop banks to a computer.

Restoring Files

Method for restoring loop banks from a computer.

Importing Audio Files for Loop A & Loop B

Importing Audio Files for RHYTHM Loops

WARRANTY INFORMATION

FCC COMPLIANCE

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