RDL ST-UMX3 Bedienungsanleitung

RDL Stabmixer ST-UMX3

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STICK-ON® SERIES
Model ST-UMX3
Universal Audio Mixer
Audio Mixing with Up To Three Inputs
Switch Selectable Mic or Line Inputs
Switch Selectable Mic or Line Output
Add Additional Microphone or Line Level
Inputs to an Existing Mixer
Combine Signals of Different Level,
Impedance, or Bal. / Unbal. Configuration
The ST-UMX3 is part of a group of products in the STICK-ON series from Radio Design Labs. The durable bottom adhesive permits quick,
permanent or removable mounting nearly anywhere or it may be used with RDL’s racking accessories. The ST-UMX3 gives you the advantage of
a high performance audio mixer with a big PLUS, you can put it where you need it. STICK-ONs are designed, built and rated for continuous duty
in professional A/V systems.
APPLICATION: The ST-UMX3 is a three-channel audio mixer for combining mic-level or line-level signals
to a single output. A MIC/LINE switch is provided for each input. A separate MIC/LINE switch selects the
output level. Each input features a separate preamplifier circuit, which isolates it from the other inputs. An
audio-taper, single-turn gain adjustment is provided for each of the three input preamps. Signals from the
three preamps are actively summed and fed to the output line-level driver amplifier. The output amplifier
includes an RDL dual-LED VU meter.
The mic-level input circuits accept either balanced low-impedance mics or high-impedance unbalanced
mics. The line-level input circuits bridge any line-level audio source. The output is switch-selectable for
mic-level or line-level, and is capable of driving either high or low impedance, balanced or unbalanced
loads.
Each input level is set while observing the LED output level meter. The dual LED output meter follows
standard VU ballistics. The intensity of the green LED progresses from minimum at -11 dBu to full
intensity at +4 dBu. Flashing of the red LED is equivalent to a VU meter needle swinging above the
0 level. If the output is switched to MIC level, the meter continues to indicate correct operating level. The
output MIC level is padded 50dB below the normal LINE output level.
The ST-UMX3 is powered from ground-referenced 24 Vdc, permitting the module to share a common
power source with most RDL modules.
The flexibility of switching each input and the output between MIC or LINE allows installers to address a
wide variety of mixing solutions with only one product type. Wherever a flexible mic and line level mixing
amplifier is needed, the ST-UMX3 is the ideal choice. Use the ST-UMX3 individually, or combine it with
other RDL products as part of a complete audio/video system.
RDL
659 6th St.
Prescott, AZ., USA 86301
(928) 443-9391 FAX (928) 443-9392
www.rdlnet.com
STICK-ON® SERIES
Model ST-UMX3
Universal Audio Mixer
TYPICAL PERFORMANCE
Inputs (3): Mic: 600 balanced; Line: 50 k balanced
NOTE: MIC INPUTS ON ST-UMX3 ARE NOT PROTECTED
AGAINST PHANTOM VOLTAGE. USE THE ST MPA48 or
ST-MPA24 Mic Phantom Adapter.
Max Input Signal: Mic: -18 dBu; Line: +25 dBu
Gain (each input): Mic: Adjustable from OFF to 60 dB
Line: Adjustable from OFF to 21 dB
Output: 150   balanced; 75 unbalanced
Output Signal: +4 dBu nominal, mic level 50 dB below line level
THD+N: < 0.006%
IMD: Mic (@ 50dB gain): < 0.04%: Line: < 0.008%
Freq. Response: Mic: 50 Hz to 100 kHz (+/- 1 dB)
Line: 10 Hz to 100 kHz (+/- 0.05 dB)
Noise (each input): Mic: < -70 dB (50 dB gain)
Line: < -82 dB (unity gain)
Headroom: 18 dB
CMRR: Mic: > 60 dB; Line: > 50 dB (50 to 120 Hz)
Ambient Operating Environment: 0° C to 55° C
Power Req.: GROUND-REFERENCED, 24 Vdc @ 55 mA
Installation/Operation
Declaration of Conformity available from rdlnet.com.
Sole EMC specifications provided on product package.
Specifications are subject to change without notice.
891-1105C
Radio Design Labs Technical Support Centers
U.S.A. (800) 933-1780, (928) 778-3554; Fax: (928) 778-3506
Europe [NH Amsterdam] (++31) 20-6238 983; Fax: (++31) 20-6225-287
CONDENSER MIC CONNECTION
(USING ST-MPA24 OR ST-MPA48
MODULE FOR PHANTOM VOLTAGE)

Produktspezifikationen

Marke: RDL
Kategorie: Stabmixer
Modell: ST-UMX3

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