Tecpro Master Station

Tecpro Master Station MS741

Designed to be the hub of a wired intercom system, the compact MS741 Master Loudspeaker Station has been developed from the highly successful original Tecpro designs that dominate the UK live events industry. It maintains the traditional high standards of construction while offering useful new features that satisfy common installation and operational demands.

MS721 MASTER STATION
  • MS721 MASTER STATION REAR
  • Tecpro Group Shot

Description

The MS741 Master Loudspeaker Station has two independent intercom circuits, A and B, which can be addressed separately or together by the operator. Each circuit can power up to 25 Tecpro BP511 beltpacks. Circuit B may be linked to circuit A to form a single circuit supporting up to 50 beltpacks.

Each intercom circuit has its own individual power supply with short-circuit protection. All protection is electronic and automatic and no resetting is necessary following removal of a fault condition. The Master Loudspeaker Station can be operated world-wide without the need to change AC power supply settings.

As events become more complex, two communication circuits may not be enough. Linking the ME742 Master Loudspeaker Station Extender unit to the Master Loudspeaker Station creates two additional circuits, C and D, technically identical to A and B. They may be used independently or linked as required. In total, between 1 and 4 intercom circuits may be configured.

External audio sources such as programme feeds or show relay can be mixed to either intercom circuit using the 'Aux Level' control. To ensure important announcements are always heard, the 'Override' function triggers any Tecpro LS200 or LS300 loudspeaker stations operating on a selected circuit to default to pre-set audio levels independent of the loudspeaker's current volume control setting which may have been turned down to zero.

The 'Announce' mode allows paging directly to an external PA system by routing the talk-back mic signal to a dedicated output on the rear panel. This mode can also be triggered externally via a rear 6-pin DIN socket.

To keep communications clear of excessive background noise and chatter, all Series 2 Tecpro beltpack and user stations on a selected circuit can be silenced remotely from the MS741Master Loudspeaker Station using the 'Remote Mic Kill' facility*.

*Tecpro Series 2 products are backwards compatible with first generation designs with the exception of the 'Remote Mic Kill' which applies to Series 2 products only.

Overview

  • Compact 1U format
  • Two independent intercom circuits, A and B (increases to four when combined with ME742 Extender unit)
  • Supports up to 25 Tecpro BP511 beltpacks per circuit
  • Circuit B may be linked to A to form a single circuit supporting up to 50 beltpacks
  • Built-in electret talk-back microphone. XLR4 input for optional gooseneck mic or headset
  • High efficiency 2inch elliptical loudspeaker on front panel. External speaker outlet jack on rear
  • Additional 6.35mm jack input on rear for inserting external dynamic mic
  • Mic amp limiting circuit protects against distortion and overloads
  • Rear XLR3 socket 'Aux' Mic/Line input. Switchable 48V Phantom power on mic input
  • 'Aux' programme material mixes to either or both circuits. Front panel 'Aux' level control
  • Dual action 'Circuit Select' and 'Mic ON/OFF' switches with latching and non-latching modes
  • DC and 20kHz 'Call' alert signal send and receive. Visual and audible 'Call' indication
  • 'Override' function triggers Tecpro LS200 and LS300 paging loudspeakers to default to pre-set audio levels
  • 'Announce' mode for paging to external PA system. This mode may also be triggered externally via a 6-pin DIN socket
  • 24kHz 'Remote Mic Kill' send and receive
  • Power output 1.1A per circuit
  • Short circuit and overload protection with indication for each intercom circuit

The Master Loudspeaker Station is fitted with a Universal Power Supply 90-260V AC, 50-60Hz and can be operated world-wide without the need to change AC power settings.

Specs Front

Mouse over the above IMAGE to view Detailed Information

MS741 Features
  • Two independent intercom circuits, A and B
  • (increases to four when combined with ME742 Extender unit)
  • Separate short circuit and overload protection on each circuit.
  • Thermal monitoring / protection for main PSU
  • Circuit B may be linked to A to form a single circuit with
  • doubled drive capacity
  • Supports up to 30 Tecpro BP511 beltpacks per circuit
  • Buit-in electret talk back microphone. XLR4 Input for optional
  • gooseneck microphone or headset
  • Built-in high efficiency 2" elliptical loudspeaker.
  • External speaker jack on rear panel
  • Additional 6.35mm jack input on rear offers additional external
  • dynamic microphone input
  • 'Remote Mic Kill' facility will shut down all open microphones on a
  • selected circuit (series 2 products only)
  • 'Override' function triggers Tecpro LS200 and LS300 series paging
  • loudspeakers to operate at pre-set audio levels
  • XLR3 AUX input on rear with selectable microphone or line level.
  • Switched 48V phantom power on mic circuit
  • Microphone limiting prevents signal overload
  • 'Announce' output on rear allows paging to an external PA system.
  • This function may be triggered externally by contact closure

The Master Station and Extender unit are fitted with Universal Power Supplies 90-260V AC, 50-60 Hz

Further specifications including wiring information can be found on the datasheet

Specs Rear

Mouse over the above IMAGE to view Detailed Information

MS741 Features

  • Two independent intercom circuits, A and B
  • (increases to four when combined with ME742 Extender unit)
  • Separate short circuit and overload protection on each circuit.
  • Thermal monitoring / protection for main PSU
  • Circuit B may be linked to A to form a single circuit with
  • doubled drive capacity
  • Supports up to 30 Tecpro BP511 beltpacks per circuit
  • Buit-in electret talk back microphone. XLR4 Input for optional
  • gooseneck microphone or headset
  • Built-in high efficiency 2" elliptical loudspeaker.
  • External speaker jack on rear panel
  • Additional 6.35mm jack input on rear offers additional external
  • dynamic microphone input
  • 'Remote Mic Kill' facility will shut down all open microphones on a
  • selected circuit (series 2 products only)
  • 'Override' function triggers Tecpro LS200 and LS300 series paging
  • loudspeakers to operate at pre-set audio levels
  • XLR3 AUX input on rear with selectable microphone or line level.
  • Switched 48V phantom power on mic circuit
  • Microphone limiting prevents signal overload
  • 'Announce' output on rear allows paging to an external PA system.
  • This function may be triggered externally by contact closure

The Master Station and Extender unit are fitted with Universal Power Supplies 90-260V AC, 50-60 Hz

Further Specs including wiring information can be found on the datasheet

Technical Specs

Microphone 200 ohm dynamic type
Headset earphone 400 ohm typical - 32 ohm to 4k ohm acceptable
Front panel built-in mic Electret type
Internal speaker 2W elliptical type
Rear speaker output 2-pole A-gauge 6.35mm socket for an 8 ohm 2W speaker
System output voltage +24V DC
System line termination impedance 200 ohm in the audio frequency band, 5k ohm at DC
Auxiliary Input XLR3 electronically balanced, line or mic sensitivity with +48V phantom power
Rear microphone Input 2-pole A-gauge 6.35mm unbalanced socke
Announce output 6-pole DIN socket with electronically balanced audio output. Single pole relay contact rated at 30V 1A maximum for GPI use
Call signal DC and 20kHz
Remote mic kill signal (RMK) 24kHz
Override signal 28kHz
Maximum number of outstations per circuit 30 beltpacks or 7 loudspeaker stations (depending on model selected)
System cabling Fixed installations:31-050 FST-HD / Mobile facilities:30-130 HST-HD
Power 90 - 260V AC50 - 60Hz
Fuse rating 2A (T) HBC for 240V AC operation / 4A (T) HBC for 110V AC operation
Dimensions 1U rack mount 195mm deep
Weight 1.6 kilos