MMDI-Mini Wall plate direct box

169.99 Request

Single channel passive multi-media DI converts stereo Hi-Z to mic level. Fits single gang electrical box with Decora face plate. Screw terminal output for easy termination

  • Passive design, no power needed
  • Simple to connect
  • Contractor friendly screw terminals
  • Transformer isolated eliminates noise

Single channel direct box converts stereo Hi-Z signal from a laptop to a mono, transformer balanced, mic level signal for the house PA system. 3.5 mini TRS input, 3-conductor screw terminal output. Switch lifts output ground from TRS sleeve.

Equipped with ground lift switch on the front and a terminal block on the rear for connection to a mic input on the house A/V system. These units are ideal for use in meeting rooms, boardrooms or banquet rooms where you need to provide a simple connection point for a laptop or an audio source.

 

Applications

MMDI-Mini with a Laptop

Connect a laptop with the MMDI-Mini to a PA system while eliminating noise. The discrete wall plate DI is simply designed to be installed in a banquet hall to give easy access for a consumer level input.

Specifications

All levels are input unless noted

PARAMETER CONDITIONS MINIMUM TYPICAL MAXIMUM
Input impedance, Zi 1 kHz, 0 dBu, test circuit 1 92 kΩ 97 kΩ 102 kΩ
Voltage gain 1 kHz, 0 dBu, test circuit 1 -40.0 dB -38.6 dB  
Magnitude response, ref 1 kHz 20 Hz, +4 dBu, test circuit 1 -0.25 dB -0.08 dB 0.0 dB
Magnitude response, ref 1 kHz 20 kHz, +4 dBu, test circuit 1 -0.25 dB -0.07 dB +0.1 dB
Deviation from linear phase (DLP) 20 Hz to 20 kHz, +4 dBu, test circuit 1   +1.2/-0° ±2.0°
Distortion (THD) 1 kHz, +4 dBu, test circuit 1   <0.001%  
Distortion (THD) 20 Hz, +4 dBu, test circuit 1   0.036% 0.10%
Maximum 20 Hz input level 1% THD, test circuit 1 +19.5 dBu +21.5 dBu  
Input common mode rejection ratio (CMRR) unbalanced source 60 Hz, test circuit 2   80 dB  
Input common mode rejection ratio (CMRR) unbalanced source 3 kHz, test circuit 2 40 dB 45 dB  
Output impedance, Zo 1 kHz, test circuit 1 145 Ω 150 Ω 155 Ω
Optimal cable length input   3 m (10’) 15 m (50’)
Optimal cable length output   30 m (100’) 150 m (500’)
Temperature range operation or storage 0°C   70°C
Breakdown voltage* primary or secondary to shield and case, 60 Hz, 1 minute test duration 250 V RMS    

Graphs

Phase Distortion (DLP)
Frequency Response
THD vs Level at Low Frequencies

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