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RU-MLA2 Dual Mic / Line Preamplifier
Pro Net: $327.08
Price: $245.31
You Save: $81.77 (25 %)
Item Number: RU-MLA2
Manufacturer: Radio Design Labs
Manufacturer Part No: RU-MLA2
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Twochannel Audio Preamplifier
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Front Panel XLR Input / Output Jacks
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Detachable Input / Output Terminal Blocks
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Switchselectable Mic or Line Inputs
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Switchselectable Mic Gain and Phantom
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Gain Trim on Each Input
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Each Output Switchselectable Mic or Line
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The RUMLA2 is a dual channel audio preamplifier. The inputs and outputs may be connected through the frontpanel 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 frontpanel XLR connectors and the rearpanel terminals are active at all times. The RUMLA2 may be rackmounted with the XLR jacks facing forward, or may be reversemounted using the RDL RUFP1 Filler Panel/Reverse Mount Kit.
Each audio input is equipped with a rearpanel 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 rearpanel 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 RUMLA2 to be operated as a stereo preamplifier or as two separate mono preamplifiers.
Gain trim for each channel is provided on a frontpanel control. The knurled adjustment includes a slot so the gain may be adjusted by hand or by screwdriver. An RDL Dualled 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 RUMLA2 audio outputs are active balanced.
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Typical Performance:
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Inputs (2):
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XLR(front); detachable term block(rear)
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Input level (for +4 dBu output):
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Switchselectable (rear panel) MIC/LINE
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Mic:
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48 dBu to 3 dBu (LO GAIN); 65 dBu to 20 dBu (HI GAIN)
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Line:
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15 dBu to +28 dBu
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Input Impedance:
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Mic:
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2 k balanced, switchable 24 V phantom (IEC 1938: 199612)
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Line:
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> 10 k balanced; may be connected unbalanced
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Outputs (2):
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XLR(front); detachable term block(rear)
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Output level:
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Switchselectable (rear panel) MIC/LINE
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Output Impedance:
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150 balanced
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Channels:
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2 (A and B; stereo or dual mono)
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Gain Trim (2):
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Front panel adjustable; one per channel
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Mic:
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Off to 52 dB gain (LO GAIN); Off to 69 dB gain (HI GAIN)
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Line:
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Off to 20 dB gain
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Frequency Response:
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Mic
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80 Hz to 50 kHz (+/ 0.75 dB); < 10 dB @ 20 Hz (integral highpass filter)
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Line:
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15 Hz to 50 kHz (+/ 0.1 dB)
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THD+N:
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< 0.1% (Mic); < 0.005% (Line)
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CMRR:
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> 60 dB (Mic); > 50 dB (Line)
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Residual Noise (below +4 dBu LINE output
or 45 dBu MIC output):
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Mic:
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79 dB (50 dB Gain); 70 dB (Mic 60 dB Gain)
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Line:
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85 dB
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Crosstalk:
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Below noise floor (A to B; B to A)
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Headroom:
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> 20 dB (above +4 dBu LINE output)
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Power Requirement:
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GROUNDREFERENCED, 24 to 33 Vdc @ 80 mA
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Have a Question?
Expert advice is only an email or phone call away. Email advice@globalav.com or call 1-800-595-4436 to speak with one of our knowledgeable system integrators regarding this product.
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