Audio Engineering Associates RP48Q Operating Manual

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AEA RP
48
Q Ribbon Preamp with
Curve Shaping
Operating Manual
1029 N. Allen Ave. Pasadena CA 91104 www.ribbonmics.com Phone: (626) 798-9128 Fax: (626) 798-2378
• STUDIO RIBBON MICS
• MIC POSITIONERS
TALL STANDS
• ACCESSORIES
Audio Engineering
Associates
Introduction
The AEA RP
48
Q Ribbon Preamp with Curve Shaping provides two channels of high-quality, high-gain,
low-noise microphone preamplification. Particularly well suited for use with ribbon microphones, it
delivers the speed, precision, quietness, and headroom needed for today’s high resolution recordings.
The JFET circuitry design generates up to 80 dB of clean and quiet gain, with extended bandwidth
from below 1 Hz to beyond 200 kHz, for dynamic range and transient response that complements all of
your microphones.
Unique to the RP
48
Q, the separate microphone inputs offer you the choice of either DC coupling, for
microphones that neither want nor need phantom power (such as ribbon, moving-coil, or self-powered
condenser microphones) or AC coupling with switchable full-spec P48 phantom power, for phantom
powered condenser or ribbon microphones.
Bypassable Curve-Shapers—low frequency trim and high frequency boost circuits, both with variable
break frequency selection—provide full and intuitive control. These filters enable you to minimize
proximity effect or low-frequency environmental noise without compromising the bass content of the
program and/or add just the right amount of high-frequency presence boost or “air” at the top.
To complete the system in this rugged 1 RU package, the RP
48
Q provides a polarity invert switch and
LED level indicators for each channel as well as balanced outputs capable of driving +28 dBu into
600Ω and unbalanced outputs capable of driving +22 dBu into 100 kΩ loads. The recommended load
for the unbalanced output is > 10 kΩ. All outputs may be used simultaneously. The unit is factory-
wired for either 120 VAC or 240 VAC operation.
The Front Panel
© February 2009
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ribbon pre
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Figure 1: AEA RP
48
Q Front Panel Diagram