User manual RANE AP 13

[. . . ] OPERATORS MANUAL AP 13 ACOUSTIC PROCESSOR QUICK START The AP 13 accommodates the signals from two pickups from any acoustic instrument, where the pickups are wired to the tip and ring of a standard stereo ¼" TRS (Tip, Ring, Sleeve) plug. You do not need internal preamps when using the AP 13. Phantom power voltage is available for electret and other condenser mic pickups. It is assumed one pickup is a piezo-type while the other is some type of microphone. [. . . ] Pin 2 is "+" positive, pin 3 is "­" negative, and pin 1 is signal ground. MAIN OUTPUTS--LINE-level: Two ¼" TRS (Tip-Ring-Sleeve) connectors deliver the Main A & B Line Level Outputs. No surprises here: the tip is "+" positive, the ring is "­" negative and the sleeve is signal ground. MAIN OUTPUTS MONO button: Engaging this pushbutton combines or Monoes the Main A & B Output. EXPAND IN A & B jacks: Two unbalanced ¼" TS jacks used to expand the AP 13. These inputs sum (pre-Main Level control) with the Main A & B signals. Mono expansion is done using only the EXPAND IN A jack. As long as nothing is plugged into the B jack, the signal from EXPAND A automatically drives EXPAND B. These jacks also provide an auxiliary input path. INSERT loop A & B jacks: Two unbalanced ¼" TRS jacks wired per the tip=send, ring=return convention. Allows placing an outboard signal processor in series with the main signal paths. RETURN A & B jacks: Two unbalanced ¼" TS jacks used as the return path from the OUTPUTS of an outboard signal processor. Mono signals use only the RETURN A jack. As long as nothing is plugged into the B jack, the signal from RETURN A automatically drives RETURN B. SEND A & B jacks: Two unbalanced 1/4" TS jacks used to connect to the inputs of an outboard signal processor. Mono effects units should wire only to the SEND A jack. PIEZO OUTPUT: An unbalanced ¼" TS jack gives a direct dry Output signal from the Piezo Pickup only. The PIEZO PICKUP OUT slider controls the amount of signal; however, since this Output is located after the PIEZO PICKUP LEVEL slider, then LEVEL also controls this Output. TUNER OUTPUT: An unbalanced ¼" TS jack used for direct tuner connection, fed by the PIEZO input. Located post EQ but pre-LEVEL, this Output is unaffected by either the LEVEL or OUT controls. For convenience, the tuner may be left connected during performances. Ground lift switch: provides the ability to separate chassis ground and signal ground. [. . . ] EFFECTS LOOPS Most often the SEND/RETURN loop is used for a reverb, while something more specialized like a compressor or multieffects processor fills the INSERT loop. Hook-up is simple: connect the SENDs to the inputs of the reverb and run the outputs back to the RETURN jacks. To send mono and return stereo, connect only the SEND A (MONO) jack to the input and return both outputs to the RETURN jacks; or to send and receive mono use just the A (MONO) SEND and RETURN jacks. The AP 13 splits and sums the mono input equally with the A and B Outputs. [. . . ]