Dedicated to the needs of the acoustic musician, the AP 13 Acoustic Preamplifier is a full-featured package specifically suited for instruments with two pickups. The AP 13 provides two signal processing paths: one optimized for piezo pickups and one for microphone pickups. The piezo path features very high input impedance for extended low bass response; while the mic processing channel offers two choices of phantom power voltages satisfing most electret condenser mic pickups. Additionally, either channel accepts dynamic pickups or line-level outputs from outboard preamps. A convenient front panel slide switch allows choice of which pickup is wired to the tip or the sleeve of the stereo 1/4" input jack. Handy Pickup Gain Trim controls feature large openings for quick changes using guitar picks, fingernails or coins. And separate pickup overload indicators make gain set-up easy.
Each pickup signal path contains an Invert switch, an adjustable Low Cut filter, a 7-band graphic equalizer, a Pan control and a separate Level amplifier, all logically arranged along the front panel using smooth-acting oil-damped sliders for the ultimate in convenience and graphical feedback. The Invert switch solves the annoying (and too common) problem of what to do with pickups wired out-of-phase. The sliding Low Cut filter helps eliminate troublesome thumping, rumbling, rubbing and other unwanted infrasonic frequencies. The graphic equalizers give you separate timbre control over each individual pickup. The Pan and Level controls mix both pickups into one smooth stereo signal ready to drive the Send/Return effects loop, or the in-line Inserts. Two pair of high-current cross-coupled balanced stereo line drivers, with Mono switch, complete the processing chain. Choose between the stereo 1/4" line-level outs for amplifier feed or the stereo XLR mic-level outs for direct console patching, or use them both.
A powerful Headphone amplifier and Master Mute switch allow private auditioning and practice. The separate Tuner Output lets you leave your tuner attached for quick checks or changes during performance. When an auxiliary output is necessary, the separate Piezo Output with Level control perfectly satisfies the need.
The AP 13 Acoustic Preamplifer is all you ever dreamed of for perfect control of your acoustic instrument (years of practice not included).
Important Safety Instructions
For the continued safety of yourself and others we recommend that you read the following safety and installation instructions. Keep this document in a safe location for future reference. Please heed all warnings and follow all instructions.
Do not use this equipment in a location where it might become wet. Clean only with a damp cloth.
This equipment may be installed in an industry standard equipment rack. We recommend that all mounting holes be used, providing the best physical support. The equipment may be used as a table top device, although stacking of the equipment is dangerous and not recommended.
Do not directly block any of the ventilation openings. If rackmounting, please provide adequate ventilation. Equipment may be located directly above or below this unit, but note that some equipment (like large power amplifiers) may cause an unacceptable amount of hum or may generate too much heat and degrade the performance of this equipment.
Protect the power cord and plug from damage caused by being walked on or pinched. Protect the line cord, where it exits the unit, from excessive strain. Only use attachments and accessories specified by Rane.
Unplug this equipment during lightning storms or when unused for long periods of time.
Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power supply cord or plug damage, spilled liquid, fallen objects into an opened chassis, exposure to rain or moisture, a dropped unit, or abnormal operation.