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Summary of Contents for Formula Sound SENTRY MK2
- Page 1 SENTRY MK2 SOUND LEVEL CONTROL USERS MANUAL...
- Page 2 Installing a contactor into the mains power ring (requires qualified electrician) used to supply power to the sound equipment and using a Sentry MK2 to monitor sound levels and control the contactor provides control of maximum music levels.
- Page 3 Sentry MK 2 ENVIRONMENTAL NOISE CONTROL SYSTEM Features A choice of internal microphone (supplied factory fitted as standard) or external microphone (with or without phantom power) may be selected. External microphone not included. A choice of weighting filters (A, C, BASS) or no weighting filter (LIN) Two sound level thresholds may be set, level 1 (default) and level 2.
- Page 4 Operation The Sentry features a large bar-graph VU meter with 23dB range to give a good visual indication of the noise level in a venue. While the meter is operating in the green section, with even an occasional peak into the red, there is no cause for concern.
- Page 5 If Mic tamper is illuminated with Internal microphone selected the internal microphone is probably damaged and you will need to contact your installer or Formula Sound. The Sentry will switch off if the Mic tamper or Security loop indicators are illuminated.
- Page 6 The timer may for example be set to switch to level 2 at 11pm which may be a quieter level. This option is factory fitted, although an external version will be available in the near future, contact Formula Sound for details. Counter option...
- Page 7 Sentry back away from the stage to position (B) will minimise the problem In order to help solve difficult location problems provision is now included to connect a remote microphone to the Sentry MK2. See Drg No 879 for more details.
- Page 8 A 32amp fully fused boxed contactor with low voltage interface has been designed for use with the Sentry and is available from Formula Sound Ltd. The Sentry also provides connections to use a mains coil contactor with a maximum coil consumption...
- Page 9 A 32amp fully fused boxed contactor with low voltage interface has been designed for use with the Sentry and is available from Formula Sound Ltd, also a dual version is available from Formula Sound which will control two 32 amp rings.
- Page 10 REVEAL ANY UNAUTHORISED ATTEMPT TO CHANGE THE THRESHOLDS ALWAYS FIT SECURITY LABELS AFTER ADJUSTMENTS HAVE BEEN MADE. EXTRA LABELS ARE AVAILABLE FROM FORMULA SOUND IF REQUIRED. Remember that the acoustic characteristics of a venue will change depending on the number of people in it.
- Page 11 The position of jumper plugs select the response on the measuring microphone. The positions are shown on the P.C.B. Ensure that the jumpers are seated correctly. Special weighting options are possible - contact Formula Sound for further details. External Microphone connection A 3 way terminal strip is provided for the connection of a remote microphone.
- Page 12 Site this in a Manager's office or behind the bar or other suitable location. Formula Sound offer both remote push button (074P) and remote keyswitch (074K) options in a grey plastic lighting style surface mount box. Connection of either 074P or 074K is as follows: Open the remote reset box and the connections are on the back of the front panel as shown below.
- Page 13 Connect the LED terminals to the Sentry terminals marked “J” (LED INDICATORS) on drwg 879, note LED COMMON is connected to the Sentry terminal marked “EARTH”. Contactor Details of the contactor are shown on drawing 755 towards the back of the manual. AT1 option An optional add on is available which can manage sound levels, the AT1 connects to the Sentry and provided the audio is signal is routed through the AT1 before going to the system amplier(s) the...
- Page 14 Adding a Formula Sound AT1 to the Sentry can allow the music level to be controlled providing the music can be routed through the AT1 beofre going to the amplifiers.
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Page 17: Certificate Of Conformity
FORMULA SOUND LIMITED UNIT 23; STADIUM BUSINESS CENTRE; NORTH END ROAD; WEMBLEY; MIDDLESEX; HA9 0AT TELEPHONE +44 (0)208-900-0947 FAX +44 (0)208-903-8657 www.formula-sound.co.uk email info@formula-sound.co.uk E.U. CERTIFICATE OF CONFORMITY We declare that the products listed conform to the following directives and standards...
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