22500 Dual Stereo Looper Congratulations on your purchase of the Electro-Harmonix 22500 Dual Stereo Looper.
2500 QUICK START GUIDE MODES − Selecting / Types / Use MODE SELECTION & KNOB: OVERDUB: Very much like a Feedback control on a delay effect0 the OVERDUB value sets the loop audio volume loss for each pass while overdubbing/ Set to zQQ so the loop never loses volume/ • Press and release the MODE knob to select or deselect modes/ TRIGGER: Trigger the start of loop recording automatically when you start playing your instrument/ Use TRIGGER mode to set the threshold level/ As the Trigger threshold is set hig
Recording / Playing / Overdubbing Loops LOOP A First: Even though the loops may be completely independent in Freeform mode, we recommend you always record Loop A first. When set to Loop-Lock mode, the 22500 requires Loop A to be recorded first since Loop B’s length is automatically set by Loop A. LOOP FSW ACTIONS Press Once START RECORDING - No Loop in Memory: NON QUANTIZE MODE: 1. Set LOOP Mode to F nP. 2. Press LOOP A or B’s FSW once to begin recording loop immediately. REC LED lights.
LOOP Mode Explanation Page 1: Quantize, Parallel/Sequential, Loop Lock Settings The settings in LOOP mode dictate how loops are recorded, played back, and interact with each other.
Parallel Loop Recording/Playback Examples Freeform Mode In Parallel mode, one or both loops play simultaneously, allowing you to use the 22500 like a 2 track recorder or two independent loopers. To follow these examples, please set LOOP Mode to the settings shown at the start of each section. FREEFORM PARALLEL— QUANTIZE OFF: • Loops play back simultaneously. • Each loop may be independently started or stopped. • Loop B’s length is independent of Loop A.
Parallel Loop Recording/Playback Examples Loop Lock Mode Continuing examples of Parallel Loop recording and playback, this time with Loop B’s length locked to Loop A. LOOP-LOCK PARALLEL— QUANTIZE ON: • Similar to Loop-Lock mode with Quantize Off except Loop A’s length is quantized to the nearest bar. Again, Loop A must be recorded first. LOOP-LOCK PARALLEL— QUANTIZE OFF: • Loop A’s length automatically sets the length for Loop B. • Loop A must be recorded first.
Sequential Loop Recording/Playback Examples Freeform & Loop-Lock Mode In Sequential mode, only one loop plays at a time, allowing you to switch back and forth between the 2 loops either immediately or when one of the loops comes to its end. To follow these examples, please set LOOP Mode to the settings at the start of each section. FREEFORM SEQUENTIAL— QUANTIZE OFF: • Loops are switched back and forth immediately upon pressing their footswitches.
22500 USER REFERENCE MANUAL - CONTROLS & INDICATORS LEFT INPUT TOGGLE SWITCH (MIC/INST) – The left channel has two input connector choices: set LEFT INPUT to the down position for the ¼” instrument input jack or set to the up position for the XLR microphone input. MIC TRIM Knob – The MIC TRIM knob allows you to fine tune the gain of the XLR MIC input jack. The maximum gain available at the MIC TRIM knob is +27dB. Normally it is best to start with MIC TRIM at its maximum setting.
When the REC LED is lit solid but PLAY and MEM are not lit: the respective loop is currently recording its initial loop. When the REC LED is lit solid while also PLAY and MEM are active: the loop is currently overdubbing onto an established loop. Only one loop can record or overdub at a time; Loop A and Loop B cannot simultaneously record or overdub. One loop can record or overdub while the other plays though.
PLAY LEDs for LOOP A & LOOP B – If these green LEDs are lit solid for a respective loop, the loop is playing. When both the REC and PLAY LEDs are lit for a respective loop then the loop is overdubbing. The PLAY LED blinks to indicate the loop is about to start or stop playing. This occurs when the 22500 is set to Sequential mode with either Loop Lock or Quantize enabled. In these cases the loop currently playing will finish out its loop while PLAY blinks before changing over to the other loop.
not change the playback speed of the other loop or the Rhythm loop. You can playback and overdub in any of the Octave modes. Half Speed: Upon pressing the OCTAVE button to activate half speed, the 4-digit display shows the word “down” for about 1 second. When set to half speed, the pitch of the loop goes down 1 octave and the tempo is halved. Exactly like playing a tape at half speed. Double Speed: Press the OCTAVE button again to activate double speed.
The following table breaks down the function of the STOP/TAP FSW depending on the buttons that are enabled. RHYTHM BUTTON TAP ON BUTTON Disabled Disabled Enabled Disabled Enabled STOP/TAP FSW FUNCTION Disabled Enabled Enabled 12 1. A single press of the STOP/TAP FSW immediately stops playback of all loops including Rhythm. 2. Press and hold the FSW for 1.5 seconds to return to Loop A’s originally recorded tempo. 1. A single press of the STOP/TAP FSW starts and stops Rhythm playback. 2.
- MORE ON TEMPO & TAP TEMPO TEMPO – The 22500 displays the current tempo setting, in BPM, when you select R TEMPO mode. The settable tempo range is 40.0 to 320.0 BPM. The tempo setting is saved with each bank, so as you change banks the last used tempo for a given bank is recalled the next time you return to the bank. TEMPO ADJUSTMENTS – You may adjust tempo in two ways: 1) by rotating the MODE knob when R TEMPO is selected or 2) by tapping a tempo using the STOP/FSW when TAP ON is enabled.
like before creating Loop A. Then use the initial tempo setting as a starting place for adjusting tempo later. NOTE: Tap tempo may not work as expected for nonQuantized loops. - MORE ON UNDO/REDO The 22500 allows for one level of undo and redo. When each loop’s MEM LEDs are blinking, an undo or redo is capable of being performed for the respective loop. If the MEM LED is lit solid than no undo or redo is available for that loop.
MIC Input – XLR Input Jack for microphones. To use the MIC input, set the LEFT INPUT switch to MIC. Flip the PHANTOM POWER switch to ON to apply a phantom power voltage of approximately +45VDC to the MIC input. Please ensure the microphone you are using can withstand phantom power before enabling the switch. In particular, phantom power is known to possibly damage ribbon microphones. The input impedance presented at the XLR input is 10kΩ. R Input – ¼” Right Instrument/Line Input Jack.
- SIGNAL PATH Left/Right Audio Paths – The Left and Right channels remain separate throughout the 22500. Signals input through either the L/MONO ¼” jack or the XLR MIC connector are recorded onto the left channel of each loop. The loop’s left channel is output through the L/MONO output jack only. You cannot record L/MONO ¼” jack or XLR MIC inputs simultaneously. Use the LEFT INPUT toggle switch to choose one or the other.
Rotate the MODE knob clockwise to cycle around the modes in a clockwise direction. For example, rotate clockwise to move from BANK to R TEMPO to R TYPE. Rotate MODE counter-clockwise to cycle through the modes in a counterclockwise direction, for example from BANK to LOOP to OVERDUB. As you move from mode to mode, the 4-digit display shows the value of the current mode. When you arrive at the mode you want to adjust, press and release the MODE knob. Once a mode is selected, its LED goes solid.
Some typical examples of LOOP mode’s Page 1 display include: L Digit 1 2 Digit 2 4 Digit 3 P Digit 4 F Digit 1 Digit 2 n Digit 3 S Digit 4 Digit 1 – F or L: Digit 1 determines the relationship between Loop A and Loop B’s length. When set to F, for Freeform, Loop A and B are completely independent and may have different lengths that are unrelated to each other.
Using Quantize Modes 2, 3, 4, 6: These four quantize modes all record loops in the following manner: 1. Press either loop footswitch, the 22500 begins recording the loop on beat 1 of the Rhythm loop’s following bar. For example, if you press the Loop A FSW on beat 2 of the Rhythm loop, the 22500 enters RecordReady mode and waits for the Rhythm loop’s next beat 1. At the moment beat 1 hits, the 22500 starts recording. 2.
b: beat, quantizes loop lengths to the nearest beat. You can make your loop any number of beats in length. The 22500 begins recording the loop on the following beat after you press either the Loop A or Loop B FSW and ends the loop on the first beat after you press either FSW. We consider b Quantize to be an expert setting and is best attempted after you have mastered one of the other Quantize settings. NOTE: Both the RHYTHM and TAP ON LEDs blink on every beat.
Changing the 1-Shot setting works the same way as any other mode: press and release the MODE knob to jump into the mode, LOOP LED lights up solid, and then turn the MODE knob to change the setting. NOTE: upon completing an initial loop recording, the loop does not immediately playback if 1-Shot is enabled. Press the loop’s FSW to initiate loop playback. OVERDUB Mode – OVERDUB mode acts like a Feedback control on a delay, setting the attenuation amount for each loop cycle while overdubbing.
6. Press Loop A’s FSW to end loop recording. Stop recording the loop in the same way you would when not using Trigger. 7. Disable TRIGGER by decreasing its setting so that the display shows “oFF”. R TEMPO Mode – R(hythm) TEMPO mode displays the current tempo in BPM and allows for tempo adjustment. Select R TEMPO and turn the MODE knob to change tempo. As you do so, both Loop A and B and the Rhythm loop will follow along with the tempo change.
4. Press and hold the MODE knob. Release the knob when you see “COPY” blinking. 5. Wait 6 seconds. COPY continues to blink while the factory Rhythm loops are copied to the SD Card. 6. When COPY is complete, the word “done” is displayed. The SD Card is now ready to play the factory Rhythms. ERASE Mode – ERASE mode is used to erase one or both loops in the currently selected bank. Erasing both loops will reset all of the current bank’s settings back to the default settings.
Cards need to be formatted to the FAT32 file system. Most cards are preformatted for FAT32. If you need to format an SD Card, attach the 22500 to a Windows PC via the USB port, and choose “FAT32” under the File System pulldown menu. The 22500 does not record or playback without a proper SDHC Card inserted into its card slot. SD Card Removal – To remove the SD card, push the card into the 22500, this releases the card and allows a spring to push it out of the slot part of the way.
22500’s SD Card File System – All loops that you record on the 22500 are placed into the Bank folders. The Bank folders are numbered 00 through 99 and they match the Bank number you see on the 22500’s display when you scroll through the banks. The Bank folders are titled BANKxx on the SD Card, where xx stands for a number between 00 and 99. Only the bank numbers in which you have recorded audio will have folders. For example, if you have never recorded into Bank 20, there will be no folder called BANK20.
• Find a Bank folder in the root directory of your SD Card then copy and paste it to the same root directory. Do NOT rename it at this time. • Copy your audio files into the new Bank folder. • In the new Bank folder, delete the USERBANK.SET file. • Open the BANKTMPO.TXT file in your Bank folder. In the line, where it says TEMPO = xxx.xxxxx bpm, write in the BPM number used to create the loops; this will be the default tempo for the loop bank. Note: this .TXT file must be in ASCII or ANSI format.
We have some rules for the Rhythm loop audio files imported onto the 22500: • The audio files must be in .wav format. • The .wav files must have 16-bit resolution and a sample rate of 44.1kHz. • The audio files must be stereo. • The tempo of the audio files must be no less than 60BPM and no more than 240BPM. • The audio files must be named TRACKM.wav. • The TEMPO.TXT file needs to be present in the LOOPxx folder, preferably copied from an established loop.
- WARRANTY INFORMATION Please register online at http://www.ehx.com/product-registration or complete and return the enclosed warranty card within 10 days of purchase. ElectroHarmonix will repair or replace, at its discretion, a product that fails to operate due to defects in materials or workmanship for a period of one year from date of purchase. This applies only to original purchasers who have bought their product from an authorized Electro-Harmonix retailer.
