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Crest Audio Stavmixer UMA 4300

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1
UMA™4300
Professional Series
Installation Power
Amplifer
Owner’s Manual
UMA™ 4300
Professional Installation Power Amplifier
The UMA 4300 is a high quality, commercial grade analog audio mixer/amplifier. Designed for flexibility in application, this mixer/
amp represents the latest, state-of-the-art technology in analog and class-D circuit design. Powerful, yet easy to use, the new UMA
series delivers amazing sonic performance. Low-noise design and features applicable to “real-world” situations make these units ideal
for audio applications where a compact, powered mixer with multiple input and output capabilities are required.
This manual was written to provide as much information as possible for your new Crest Audio Professional Series Installation Power
Amplifier. It is our sincere desire that you enjoy your purchase. We feel that the best way to fully enjoy any purchase is to have an
in-depth understanding of the product’s features, functionality, and performance characteristics. We hope that this manual, along
with the manuals of our other products, will provide this. If you require additional information that this manual does not provide,
please let us know. We are continuously looking for better ways to provide information about our products, and your input is always
appreciated. If you require additional information not provided in this manual‚ please let us know or check out our website at:
Web site: http://peaveycommercialaudio.com/products.cfm/cr/:
Email: techserve@crestaudio.com
We are continuously looking for better ways to provide information about our products and your input is always appreciated.
ENGLISH
UMA™ 4300 Features:
• Efficient 300 Watt class-D power amplifier
• 4 electronically balanced mic/line Inputs
• 2 Inputs feature selectable dual-RCA, summing
connectors for Auxiliary sources
• Discrete-transistor, variable-gain, channel preamps for
consistent front panel level control.
• Channel 1 Priority/Muting system with variable
threshold adjustment and mute indication
• External switch input for “Mute All” control with
indication
• Bass and treble equalization controls
• Preamp output and power amp input loop for external
processing equipment or auxiliary output
• Electronically balanced line output with level control
and mix or channel 4 source selector
• Amplifier signal indicator
• ACL ™ (Automatic Clip Limiting) circuitry with
indicator
• 4 Ohm direct output
• 25 Volt, 70 Volt, and 100 Volt outputs
• Power ON indicator
• Line Voltage Selector switch for 100-120 VAC or
220-240 VAC 50/60 Hz operation
• Optional rack mounting with included rack ears
Applications:
• Presentation rooms • Board rooms • Courtrooms • Auditoriums • Lecture halls • Meeting rooms • Convention centers
• Paging systems • Background music • Retail spaces • Restaurants
3
PROFESSIONAL SERIES INSTALLATION POWER AMPLIFIER
UMA 4300
LEVEL
1 2 3 4 MASTER
POWER
SIGNAL
PEAK/MUTE
SIGNAL
ACL /MUTE
min max min max min max min max min max
TM
Front Panel
1 7
2
3 4
6
5
(1) Input Channel Level Controls
These rotary controls set the channel signal level sent to the mix bus. It is best set in the 12:00 to 2:00 range as indicated
on the front panel. The preamp gain control should then be adjusted for proper operating level.
(2) Input Channel Peak/Mute indicators
These red LEDs perform a dual purpose of indicating that the corresponding channel is muted and when the input signal
is too high and distortion can occur. To correct the problem, lower the corresponding channel gain control.
(3) Input Signal Indicator (SIG)
These LEDs illuminate green to indicate signal presence on the corresponding input.
(4) Output Signal Indicator (SIG)
These LEDs illuminate green to indicate signal presence to the mixer output master.
(5) ACL/Mute Indicator
This LED will illuminate red when the signal in the power amplifier reaches the point where the ACL circuit (Automatic
Clip limiter) engages. The ACL circuit reduces the gain automatically when necessary to prevent amplifier clipping. It
will also illuminate red when a switch closure is present on the Mute All input causing all signals through the amplifier to
be muted.
(6) Master level control
The master control sets the overall signal level of the system. It is best set in the 12:00 to 2:00 range as indicated on the
front panel.
(7) Power Indicator
This LED illuminates when powered and active.

Produktspecifikationer

Varumärke: Crest Audio
Kategori: Stavmixer
Modell: UMA 4300

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