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2 FEATURES ....................................................................................................................2 PRECAUTIONS ..............................................................................................................3 MAJOR OPERATING CONTROLS AND THEIR FUNCTIONS ....................................................................4 IN/OUT CABLE INFORMATIONS ..............................................................................................8 BLOCK DIAGRAM ............................................................................................................9 SYSTEM APPLICATIONS .................................................................................................... 10 LEVEL DIAGRAM ............................................................................................................ 13 APPEARANCE .............................................................................................................. 14 TECHNICAL SPECIFICATIONS .............................................................................................. 17 INPUT SPECIFICATIONS .................................................................................................... 10 OUTPUT SPECIFICATIONS .................................................................................................. 18 A WARNING This service literature is designed for experienced repair technicians only and is not designed for use by the general pubtic. N does not contain warnings or cautions to advise non-technical individual# of ' potential dangers In attempting to service a product. Products powered by electricity should be aerviced or repaired only by experienced professional technicians. Any attempt to service or repair the product or products dealt with in this service literature by anyone else could result in serious injury or death. WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. GENERAL The RAMS A WR-S4400 Series Sound Reinforcement and Recording Consoles have been designed and built based on the same quality and technology of RAMSA’s high-end professional mixing consoles. These consoles are available in three different sizes: the 12-input WR-S44 12, 16-input WR-S4416 and 24-input WR-S4424. Whether you are mixing sound for a band, school auditorium, theater, A/V production studio, or night club, the RAMSA WR-S4400 Series can enhance the quality of your mix. FEATURE Overall • Each input channel includes an addressable AUX control, which can be switched to feed either a mixing buss or the input channel’s Direct Out. This greatly increases output capability, especially in cases where an effect is dedicated to a single input source. The AUX Direct Out function is also useful for feeding the inputs of a Multi Track Recorder. • The distributed grounding system used in RAMSA mixing consoles reduces hum, crosstalk, and other sound-degrading characteristics to an absolute minimum. • All channel inputs, Group Outputs, and L/R Master Outputs are electronically balanced. • The Head Amplifier has a continuously variable trim range of 64 dB, enabling it to accept any Mic or Line source with a nominal level between —60 dB and +4 dB. Proper setting of the input trim control optimizes signal-to-noise ratio and allows approx. 22 dB of headroom between —60 dB and —2 dB at the A-input. (More than 18 dB between +4 dB and -2 dB.) • The Low Noise Discrete Differential Amplifier on each channel has a maximum input level of 24 dB. • Phantom Power (48V) is individually switchable on each input channel. Its noiseless operation prevents potentially damaging switching noise from reaching the speakers. • A new high-precision long-stroke carbon fader has been developed for the WR-S4400 Series mixers. • The frame is a very sturdy semi-monocoque design, able to withstand the demands of transporting. • The width of each channel strip is only 29 mm, the minimum possible while still accomodating XLR connectors. The result is more channels in a smaller frame, which improves portability. Input Section • The input circuit of this module consists of switchable dual universal Mic/Line input connectors. A switch selects either the 'A' input (XLR connector) or "B" input (TRS Phone Plug); both of which are electronically balanced. Gain structuring of the head amplifier permits the "A" input to accept any signal with a nominal level between —60 dB and +4 dB ("A" input), or —54 dB and +10 dB {"B" input). Sensitivity is infinitely variable by the Input Level Control. • Buss assign switches allow easy signal routing to the 4 Group Output Busses and the L-R Master Busses. • The Pan control "positions' the signal within the stereo field by adjusting the relative level between signals sent to the Left and Right Master Busses; and also for odd/even panning between Groups 1 /2, 3/4. • Phantom power (48 V) is switched on or off for each individual channe...