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The System 84 Model A from RDL is a rack-mountable eight-in, four-out stereo matrix router and audio mixer with very low self-noise. The inputs can be mixed to the outputs in any combination. The functions of the System 84 Model A are controlled by 32 logic lines on a single input connector. Functions may be selected using dry contacts, or the unit can be software-controlled using a computer with a logic-control in/out card.
All I/Os are connected via plug-in terminal blocks. Levels can be precisely adjusted using rear-panel trimmers. With all of those features, plus solid-state switching, studio-quality mixing, and excellent headroom in a 1U rack-space housing, the System 84 Model A is a great addition to any sound system.
Studio-quality audio routing and mixing in a 1U rack-space unit
Eight stereo inputs and four stereo outputs on plug-in terminal blocks. All can be balanced/unbalanced
Logic-controlled soft switching
Solid-state switches - No relays
Gain trim for each source
Inputs can be sent to any combination of outputs
Direct mix inputs for expansion
In the Box
RDL System 84 Model A - Stereo 8x4 Audio Mixing Matrix
3 Year Limited Warranty
Table of Contents
Switched: 8 x Line-Level, 10 k ohm Balanced or Unbalanced via Plug-in Terminal Block Direct: 8 x Unbalanced via Plug-in Terminal Block, -2 dBu
-10 dBV to +8 dBu (for +4 dBu Output) Max input: +24 dBu
> 18dB Above +4 dBu
-6dB to 12dB (Adjustable for Each Input, 25-Turn Trimmer)
10Hz to 30kHz (+/-0.25dB, Bridging Load)
THD + N
< 0.01% (20Hz to 20kHz)
< 0.025% (20Hz to 20kHz)
Left into Right: Better than 80dB (10Hz to 15kHz), Better than 75dB (15kHz to 20kHz) Right into Left: Better than 70dB (10Hz to 15kHz), Better than 65dB (15kHz to 20kHz)
< -80dB (Channel On, Referred to +4 dBu)
> 80dB (10Hz to 20kHz) with Adjacent Input Channel Off > 80dB (10Hz to 10kHz) > 75dB (10kHz to 20kHz) with Adjacent Input Channel On
Front-Panel LEDs for Activity and Idle
Common Mode Rejection Ratio
> 50dB (50 to 120Hz)
4 x 150 ohm Balanced or Unbalanced via Plug-in Terminal Block