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RDL RU-MLA2T


Dual Mic/Line Preamp

BSW PART: RUMLA2T

RDL RU-MLA2T
The RDL RU-MLA2T is a dual channel audio preamplifier with inputs and outputs that can be connected through the front-panel XLR jacks or on the rear panel detachable terminal blocks. Each input accepts either a balanced microphone or line level signal. Each output provides either a microphone or line level signal. Both the front-panel XLR connectors and the rear-panel terminals are active at all times. The RDL RU-MLA2T may be rack-mounted with the XLR jacks facing forward, or may be reverse-mounted using the RDL RU-FP1 Filler Panel/Reverse Mount Kit.

Each audio input is equipped with a rear-panel switch to select between MIC and LINE level. Two additional switches on each input allow setting the MIC input for LO or HI gain and for enabling or disabling standard 24 Vdc phantom. The two microphone gain settings allow the connection of a wide variety of dynamic and condenser microphones. Each output is provided with a separate rear-panel switch to set the associated level to either MIC or LINE. Audio outputs may be wired balanced or unbalanced. Crosstalk between channels is below the noise floor, allowing the RU-MLA2 to be operated as a stereo preamplifier or as two separate mono preamplifiers.

Gain trim for each channel is provided on a front-panel control. The knurled adjustment includes a slot so the gain may be adjusted by hand or by screwdriver. An RDL Dual-LED VU meter is provided above each channel gain trimmer. The meters are calibrated to indicate +4 dBu for outputs set to line level.

The rear panel provides a detachable terminal block and a power input jack to connect 24 Vdc power. The RDL RU-MLA2T audio outputs are active balanced, with each output equipped with a studio-quality audio output transformer.
 

Power supply sold separately. (PS24AS)

Main Features:
• Two-channel audio preamplifier
• Front panel XLR I/O
• Detachable I/O Terminal Blocks
• Switch-selectable mic or line inputs
• Switch-selectable mic gain and phantom power
• Gain trim on each input
• Each output switch-selectable mic or line
• Studio-quality audio output transformer on each output

Specifications:
• Inputs (2):XLR(front); detachable term block(rear)
• Input level (for +4 dBu output): Switch-selectable (rear panel) MIC/LINE
• Mic: -48 dBu to -3 dBu (LO GAIN); -65 dBu to -20 dBu (HI GAIN)
• Line:-15 dBu to +28 dBu
• Input Impedance:
• Mic: 2 kΩ balanced, switchable 24 V phantom (IEC 1938: 1996-12)
• Line: > 10 kΩ balanced; may be connected unbalanced
• Outputs (2):XLR(front); detachable term block(rear)
• Output level:Switch-selectable (rear panel) MIC/LINE
• Output Impedance:150 Ω balanced
• Channels:2 (A and B; stereo or dual mono)
• Gain Trim (2):Front panel adjustable; one per channel
• Mic: Off to 52 dB gain (LO GAIN); Off to 69 dB gain (HI GAIN)
• Line:Off to 20 dB gain
• Frequency Response:
• Mic80 Hz to 50 kHz (+/- 0.75 dB); < 10 dB @ 20 Hz (integral high-pass filter)
• Line: 15 Hz to 50 kHz (+/- 0.1 dB)
• THD+N:< 0.1% (Mic); < 0.005% (Line)
• CMRR:> 60 dB (Mic); > 50 dB (Line)
• Residual Noise (below +4 dBu LINE output or -45 dBu MIC output):
• Mic:-79 dB (50 dB Gain); -70 dB (Mic 60 dB Gain)
• Line:-85 dB
• Crosstalk:Below noise floor (A to B; B to A)
• Headroom:> 20 dB (above +4 dBu LINE output)
• Power Requirement:GROUND-REFERENCED, 24 Vdc @ 80 mA
• Ambient Operating Environment:0° C to 55° C

RDL RU-MLA2T Figure 1

RDL RU-MLA2T Figure 2

List Price: $638.94
$455.42
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