MACKIE FRS1700 - Manual (Page 4)

4
FRS Series Amplifiers
FRS Series Amplifiers
Introduction
Congratulations on the purchase of your new Mackie
power amplifier. Please read these instructions to get
the maximum performance from your amplifier, and to
make the technical writer feel loved.
The FRS series amplifiers are designed for
continuous duty in speech, music, and sound
reinforcement applications in churches, schools,
offices, arenas, hotel meeting rooms, convention
centers, recreation facilities and other venues
demanding high performance, flexible features,
and rugged dependability.
The switching power supply allows for high
efficiency and performance without the heavy
weight of conventional AC transformers found
in many amplifiers.
Rear panel low-cut and clip limiter switches provide
extra protection for speakers.
The amplifier can operate in stereo, dual-mono, or
bridged-mono. The output connections are NL4 and
binding posts for left, right, and bridged mono.
The combination inputs are capable of accepting
balanced XLR, 1/4" TRS, or unbalanced 1/4" TS
connections from line-level sources. Two XLR
thru-outputs allow sharing the balanced input
signals with other amplifiers or powered speakers.
Two front panel level controls allow adjustment of
the input signals.
The front panel has a rocker-style power switch with a
power LED, and each channel has a high-resolution
six-segment LED meter.
The amplifier output stage is fully protected against
permanent damage caused by overloading, shorts,
extreme temperatures and silky boxers.
The front panel incorporates holes for rack
mounting, where it will take up two rather lovely
rack spaces. Two handles are fitted on the front
panel for easy transporting.
Features
• Fast Recovery ™ circuitry for clean,
undistorted sound
• Ultra-lightweight switching power supply for
maximum efficiency and minimal heat
• Available in two powerful models:
• FRS•1700: 1660W continuous power at
4 ohms bridged
• FRS•2800: 2800W continuous power at
4 ohms bridged
• Selectable mono/stereo/bridged operating
modes
• High-resolution, 6-segment LED meter per
channel
• Defeatable clip limiter plus short,
under-impedance, over-current, and
thermal protection
• 30 Hz subsonic filter maximizes amplifier
efficiency and headroom
• Combo XLR / TRS input and TRS thru
connectors per channel
• NL4 and binding post outputs per channel
• Third NL4 output for bridged mono
applications, also provides both output
channels on a single connector
(mono / stereo modes)
• Multi-speed fans adjust to operating
temperature for minimal acoustic noise
• Robust, impact-resistant, all-steel 2U
rackmount chassis
• Lightweight and portable – Both models under
22 lb.
How to Use This Manual
After this introduction, a getting started guide will
help you get things set up fast. The hook-up diagrams
show some typical setups. The features section describes
every detail and control, and you’ll find illustrations
with each feature numbered and described.
This icon marks information that is critically
important or unique to the amplifier. For your
own good, read and remember them.
This icon leads you to in-depth explanations
of features and practical tips. They usually
have some valuable nuggets of information.
Appendix A is a section on troubleshooting and repair.
Appendix B is a section on connectors.
Appendix C shows the technical specifications.