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MS83P

MS83P      8 Channel (3 Way) Rack Mount Mic Splitter




FEATURES:

  • Provides 3-way Split for Low Impedance Microphone
  • 8 Splitter Channels in Single Rack Space
  • Allows Assembly of Economical Expandable Splitting System
  • Great for Musicians' Monitoring and Remote Recording and Broadcast
  • Phantom Power Buss for Powering Condenser Mics from an External Power Source
  • Connects with Phoenix COMBICON Plug-in Screw Connectors
  • High Quality Transformer-Isolated Output
  • Rugged ProCo Uni-Box Construction Provides Protection and EMI/RFI Shielding


DESCRIPTION:

The ProCo TradeTools MS83P Eight-Channel Mic Splitter splits the signals from each of eight low-impedance microphones (or similar sources) into three outputs, enabling three microphone preamplifiers to be fed from one source. Additionally, the MS83P features a phantom power buss to facilitate the powering of condenser microphones from an external power supply. This allows microphone patching without fear of transients due to the interruption of phantom power, often a problem when the console power supply is used.

The primary application for the MS83P is in large sound reinforcement systems, where the P.A. system microphones must also be fed to a stage monitor system and a broadcast or remote recording mixer. In such complex systems, grounding problems can cause both unacceptable noise levels and severe shock hazards. Transformer isolation in such situations minimizes interference from EMI/RFI and ground loops. The transformer-isolated feeds retain the advantage of common-mode noise rejection inherent in the use of balanced lines.

The MS83P is fitted with Phoenix COMBICON plug-in screw connectors for MIC IN, DIRECT OUT, and ISO OUT 1 and 2, so hookup requires only bare conductors and a screwdriver. The use of the ProCo MBT-2 transformer allows the MS83P to provide a floating, low-impedance output with wide, flat frequency response, ultra-low distortion, and minimal ringing or overshoot to degrade transient response. The transformer’s triple electrostatic shields and GND/LIFT switches provide isolation and buzz-free operation in virtually any environment.

The MS83P’s rugged 16–gauge steel and aluminum “Uni–box” construction enclosure is finished in a durable black texture powder coat finish with black anodized aluminum side channels. Easy–to–read control graphics are incorporated into the Lexan® front and back panel overlays. Inside, the specially designed transformers combine superb audio quality with unsurpassed noise rejection.

The MS83P can be mounted in any standard 19” (482.6mm) rack. Top quality connectors and switches provide trouble-free service even in abusive situations such as remote broadcast and recording operations. The rack-mounting design allows the user to assemble a conveniently packaged expandable splitting system that combines top quality audio performance and isolation with an economical price.

 

TYPICAL PERFORMANCE:

All measurements made with 150Ω source feeding MIC IN and 1.0 kΩ loads on all ISOLATED OUTPUTS to simulate typical "real world" microphone and mic preamps. 0 dBv ref. = .775 volts.

Frequency Repsonse:

20 Hz - 20 kHz, ± .25% @ -15 dBv output.
-3 dB @ approximately 140 kHz.

Total Harmonic Distortion:
<.03% 20 Hz - 20 kHz @ -30 dBv output.
<.1% 30 Hz - 20 kHz @ -15 dBv output.
<.25% 20 Hz - 20 kHz @ -15 dBv output.
Phase Response:
<-13 degrees @ 20 kHz (ref. 1.0 kHz).

Rise Time:
<2.4 microseconds (2.0 kHz square wave, 10%-90%).


Voltage Loss:

<2.5 dB @ 1.0 kHz.

Input Impedance:
>570 Ω @ 1.0 kHz.
>570 Ω @ 10kHz.
Nominal source impedance is 150 Ω.

Output Impedance:
<255 Ω @ 1.0 KHZ.
<270Ω @ 10 kHz.
Nominal output impedance is 1.0 kΩ.

Maximum Input Level for 1% THD:
0 dBv @ 20 Hz.
+4 dBv @ 30 Hz.
+8 dBv @ 50 Hz.

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