1. Introduction
The Electro-Harmonix 22500 Dual Stereo Looper is a powerful and intuitive looping device designed for musicians. It offers comprehensive features in a compact package, recording high-quality, non-compressed audio directly to a removable SDHC card. With support for 4GB to 32GB cards, each capable of holding up to 100 individual loops, the 22500 provides extensive recording time. An 8GB card is included, offering up to 12 hours of recording. This manual provides detailed instructions for setup, operation, and maintenance of your 22500 Looper.
2. Setup
2.1 Connections
The 22500 features stereo inputs and outputs, allowing for versatile recording and playback configurations. Connect your instruments or audio sources to the L/MONO and R INPUTS. For stereo effects processors or stereo reverbs, utilize both inputs. The unit also includes an XLR jack for microphone input with selectable phantom power.
Figure 2.1: Front view of the Electro-Harmonix 22500 Dual Stereo Looper, showing controls and footswitches.
Figure 2.2: Rear view of the 22500 Looper, highlighting the input/output jacks, phantom power switch, mic trim, 9VDC input, SDHC card slot, and USB port.
2.2 Power Supply
Connect the included 9.6VDC 500mA power supply to the 9VDC input jack on the rear of the unit. Ensure the correct power supply is used to prevent damage.
3. Operating Instructions
3.1 Basic Looping
The 22500 features two independent loops, Loop A and Loop B, each with dedicated REC, PLAY, and MEM indicators. You can record and play back audio on either loop independently or simultaneously.
3.2 Dual Stereo Looping
Utilize the stereo inputs to record different instruments on each channel, such as a guitar on the left and a bass on the right, while maintaining separate tracks. This allows for rich, layered stereo soundscapes.
3.3 Microphone Input
Plug a microphone into the XLR jack and an instrument into the right input. Use the MIC TRIM control to mix the two signals. This is ideal for vocal and acoustic guitar duos.
3.4 Built-in Drum Loops
The 22500 includes 16 built-in drum loops to provide rhythmic backing for your performances and practice sessions. You can also load your own drum beats into the 100 available slots.
3.5 Undo/Redo Functionality
The unit allows you to undo or redo your last overdub or recording, providing flexibility during the creative process.
3.6 Auto-Trigger Recording
The Auto-Trigger feature automatically starts recording the moment it detects sound. This simplifies the process of capturing sound effects and samples. Simply arm the looper for auto-trigger and set the threshold for recording activation.
3.7 Dual Tempo Digital Delay
By turning down the feedback control, the 22500 can function as a dual tempo digital delay. Loop A can be set as a slap-back delay, while Loop B can be configured as a long delay. The delay time is equal to the length of the loop you create.
3.8 Sound Effects and Samples
The 22500 offers 100 memory spots to store sound effects and samples, enhancing your performance. Sound effect loops can play continuously or in 1-Shot Mode, playing once and then stopping. You can also record ambient sound effects to add a new dimension to your live performance.
3.9 Optional Foot Controller
An optional foot controller (sold separately) can be used for convenient loop up/down functions, allowing you to scroll through banks of sound effects or drum beats during live performance.
4. Media Integration
4.1 Product Overview Video
This video provides a comprehensive overview of the Electro-Harmonix 22500 Dual Stereo Looper Pedal, demonstrating its key features including stereo inputs/outputs, microphone input, dual tempo digital delay, and auto-trigger recording. It showcases unique functionalities not commonly seen in other looper videos.
4.2 Advanced Features Demonstration
This video further explores the capabilities of the Electro-Harmonix 22500 Dual Stereo Looper, demonstrating features such as overdubbing, dual tempo digital delay with different delay times for each loop, auto-trigger for sound effects, and the use of ambient sound effects with drum beats. It also highlights how to integrate other Electro-Harmonix pedals like the POG2 and Key9 for diverse sound creation.
5. Maintenance
To ensure the longevity and optimal performance of your 22500 Looper, keep the unit clean and free from dust. Use a soft, dry cloth for cleaning. Avoid exposing the unit to extreme temperatures, humidity, or direct sunlight. Store the unit in a safe place when not in use.
6. Troubleshooting
6.1 No Power
- Ensure the 9.6VDC 500mA power supply is correctly connected to the unit and a working power outlet.
- Verify the power supply is the correct voltage and current for the device.
6.2 No Audio Output
- Check all audio cables for proper connection and integrity.
- Ensure input gain and loop levels are set appropriately.
- Verify that the correct input (L/MONO, R, or MIC) is selected and active.
6.3 Recording Issues
- Ensure an SDHC card is properly inserted into the slot.
- Check the available storage space on the SDHC card.
- If using Auto-Trigger, adjust the threshold to ensure it's sensitive enough to detect your input signal.
7. Specifications
- Item Weight: 1.2 pounds
- Product Dimensions: 5.75"L x 4.75"W x 2.5"H
- Item Model Number: 22500
- Color: Black
- Hardware Interface: USB
- Signal Format: Analog
- Power Source: Corded Electric
- Voltage: 9 Volts
- SDHC Card Support: 4GB to 32GB (8GB card included)
- Loop Banks: 100
- Audio Tracks: 2 uncompressed
8. Warranty & Support
For detailed warranty information and further support, please refer to the official Electro-Harmonix resources. You can also find additional information and products on the Electro-Harmonix Store.
A PDF version of the user manual is available for download here.
