- Description
Details
RDL RU-MLD4T Microphone / Line Distribution Amplifier - 1x4 with Transformer
The RU-MLD4 is a four channel audio distribution amplifier. The input and all four outputs may be connected through the front-panel XLR jacks or on the rear panel detachable terminal blocks. The input accepts either a balanced microphone or line level signal. Each of the four outputs 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 audio input is equipped with a rear-panel switch to select between MIC and LINE level. Two additional switches 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 are isolated from each other and may be wired balanced or unbalanced. Gain trim is provided on a front-panel control. An RDL Dual-led VU meter is provided above the gain trimmer. The meter is 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. Each output of the RU-MLD4T is equipped with a studio-quality audio output transformer.
- Features
Features
- Distribution amplifier with four outputs
- Front panel XLR input/output jacks
- Detachable input/output terminal blocks
- Switch-selectable mic or line input
- Switch-selectable mic gain and phantom
- Gain trim on input
- Each output switch-selectable mic or line
- Specification
Input XLR (3 pin, front panel) and detachable terminal block (rear panel) Input Level (for +4 dBu output) Switch-selectable (rear panel) MIC (LO or HI gain) or LINE Mic -48 dBu to -3 dBu (LO GAIN); -65 dBu to -20 dBu (HI GAIN) Line -15 dBu to +28 dBu Input Impedance Specifications Mic 2 kΩ balanced, switchable 24 V phantom (IEC 1938: 1996-12) Line > 10 kΩ balanced; may be connected unbalanced Outputs (4) XLR (3 pin, front panel) and detachable terminal block (rear panel) Output Level Switch-selectable (rear panel) MIC (-46 dBu) or LINE (+4 dBu) Output Impedance 150 Ω balanced; drives high or low impedance lines Gain Trim Front panel adjustable; one for each channel Mic LO GAIN Off to 52 dB gain Mic HI GAIN Off to 69 dB gain Line Off to 20 dB gain Frequency Response Specifications Mic 80 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 Specifications Mic < 0.1% (80 Hz to 20 kHz) Line < 0.005% CMRR > 60 dB (Mic); > 50 dB (Line) Residual Noise
(below +4 dBu LINE output or -45 dBu MIC output)Mic 40dB Gain, LO GAIN -79 dB (20 Hz to 20 kHz) Mic 50dB Gain, HI GAIN -79 dB (20 Hz to 20 kHz) Mic 60dB Gain, HI GAIN -70 dB (20 Hz to 20 kHz) Line -85 dB (20 Hz to 20 kHz) Headroom (above +4 dBu LINE output) > 20 dB Power Requirement 24 to 33Vdc @ 90 mA, Ground-referenced WEEE Weight 2.385 lbs (1.08 kg) Shipping Weight 2.12 lbs (0.96 kg) - Documents
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