User manual RANE SP 13

[. . . ] If not, recheck all settings and wiring, and read the next few pages. Never connnect anything except an approved Rane power supply to the red thing that looks like a telephone jack on the rear of the unit. This is an AC input and requires special attention if you do not have a power supply exactly like the one originally packed with your unit. See the full explanation of the power supply requirements elsewhere in this manual. WEAR PARTS: This product contains no wear parts. Manual-1 FRONT PANEL DESCRIPTION Stick® INSTRUMENT INPUT: is a stereo ¼" TRS (Tip-Ring-Sleeve) INPUT jack for use with a Stick instrument with two pickups; Use a balanced or stereo ¼" shielded cable to connect your instrument to this Input. [. . . ] 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 from another mixer, instrument, tape, etc. 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 ¼" TS jacks are used to connect to the inputs of an outboard signal processor. Mono effects units should wire only to the SEND A jack. AUX OUTPUT: An unbalanced ¼" TS jack gives a direct dry Output signal from the A Pickup only. The PICKUP A OUT slider controls the amount of signal. TUNER OUTPUT: An unbalanced ¼" TS jack used for tuner connection, fed by both pickups. Located post EQ but preLEVEL, 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. Normally, this switch should be in the "grounded" position. In some circumstances, moving it to the opposite position eliminates hum and buzz problems. Remote power supply input: This unit is supplied with an RS 1 Remote AC Power Supply (RAP) suitable for connection to this input jack. The power requirements call for an 18 VAC center-tapped transformer. Never use a power supply other that the one supplied or a replacement approved by Rane. [. . . ] EXPAND JACKS Signal entering the SP 13 through these jacks sums (postEQ and effects loops) with the internal signal. Mono signal applied to the A (MONO) EXPAND IN jack sums equally into Main A and B Outputs. MAIN OUTPUTS Two sets of Main Outputs exist. Both are fully balanced, both may be used at the same time. [. . . ]