ARX Early ISC Control Unit/Speaker Processor Information Sheet

Text of ARX Early ISC Control Unit/Speaker Processor User Guide:

• ARX Early ISC Control Unit/Speaker Processor, Early ISC Speaker Processor Owner's Information - all models ©2004 ARX® Early ISC Control Unit/Speaker Processor Information Sheet INTERNATIONAL LIMITED WARRANTY DISCLAIMER All these products are out of warranty. The information contained in these notes is given in good faith to the best of our knowledge, and believed to be accurate, BUT NO GUARANTEE OF ITS ACCURACY IS EITHER EXPRESSED OR IMPLIED. Many units may also have been modified by their owners over the years from their original specifications, and that should be kept in mind when using these products. You’re on your own. !!! Check carefully at each stage for correctness of wiring and function before powering up !!! IM

• ARX Early ISC Control Unit/Speaker Processor, Early ISC Speaker Processor Owner's Information - all models ©2004 ARX® Introduction These notes have been compiled for the benefit of owners of older ART/ARX speaker processors. Please pay close attention to the section on connecting the I.S.C. leads to the processor. The colour code and channel selection is particularly critical when putting the system together for the first time. Severe speaker damage can be caused by incorrect wiring. So please, take it easy and check things as you go. What is I.S.C? I.S.C stands for Interactive System Control, ARX’s innovative Speaker and Electronics Interface. ISC monitors the output of the power amplifier driving each set of L

• ARX Early ISC Control Unit/Speaker Processor, Early ISC Speaker Processor Owner's Information - all models ©2004 ARX® Connecting the ISC leads --- Early Models with Red and Black leads The Red and Black ISC leads, on 4 pin XLR connectors, plug into the corresponding sockets on the rear of the Control Unit. The RED leads connect to the OUTPUTS of the LOW amplifiers, in parallel with the leads going to the LOW speakers. The BLACK leads connect to the Outputs of the HIGH amplifier, in parallel with the leads going to the HIGH speakers. Pin configuration is Pins 1 and 2 - Red (Low), Pins 3 and 4 Black (High) • Connect both RED leads to the LOW amp outputs, and both BLACK leads to the HIGH amp outputs. They are

• ARX Early ISC Control Unit/Speaker Processor, Early ISC Speaker Processor Owner's Information - all models ©2004 ARX® CHANNEL A ISC RETURNSCHANNEL B ISC LEADS FROM CH. A ISC LEADS FROM CH. B OUT TO HIGH AMP IN CH. B OUT TO LOW AMP IN CH. B IN FROM CONSOLE OUT TO HIGH AMP IN CH. A OUT TO LOW AMP IN CH. A IN FROM CONSOLE OUT TO LOW AMP IN CH. B OUT TO LOW AMP IN CH. A IN FROM CONSOLE ISC LEADS FROM CH. A ISC LEADS FROM CH. B CHANNEL A CHANNEL B ISC LEADS FROM CH. A ISC LEADS FROM CH. B OUT TO HIGH AMP IN CH. B OUT TO MID AMP IN CH. B IN FROM CU118S OUT TO HIGH AMP IN CH. A OUT TO MID AMP IN CH. A IN FROM CU118S ISC RETURNS OUT TO MID/HIGH AMP IN CH. A OUT TO MID/HIGH AMP IN CH. B CHANNEL A ISC RETURNSCHANN

• Early ISC Speaker Processor Owner's Information - all models ©2004 ARX® Connecting the ISC leads The White and Blue Interactive System Control leads, on 6 pin XLR connectors, plug into the corresponding sockets on the rear of the Control Unit. The WHITE leads connect to the OUTPUTS of the LOWamplifier Channel A, in parallel with the leads going to the s

• ARX Early ISC Control Unit/Speaker Processor, Early ISC Speaker Processor Owner's Information - all models ©2004 ARX® Part C - Passive Systems - CU303s, CU306, PowerPro, MicroPro These systems use a passive crossover inside the speaker cabinet, and a single pair of ISC leads control each channel. These leads allow the Control unit to monitor the output of the amplifiers, and to activate the speaker protection circuits if the power exceeds the maximum safe operating area of the speaker. Early Systems - Red and Black ISC leads Both RED leads connect to the OUTPUT of Amp Channel A, in parallel with the speaker leads. Both BLACK leads connect to the OUTPUT of Amp

• ARX Early ISC Control Unit/Speaker Processor, Early ISC Speaker Processor Owner's Information - all models ©2004 ARX® CU118s Input Impedance Balanced 20 Kohms Unbalanced 10 Kohms Input Headroom +21 dB CMRR >50dB, 20 Hz - 20 KHz Output Impedance 150 ohms Output Level (Max) +20 dB Filter Type Linkwitz-Riley state variable 24dB per Octave Frequency Response 200 Hz to 20 KHz. Note: RFI filter -6dB 100KHz Signal to Noise Ratio -90dB Unweighted -93dB A weighted Distortion .004% @ 0dB, 1 KHz Dynamic Range 111dB Input Connectors Female XLR; Pin 1 Ground, Pin 2 + (Hot) Pin 3 - (Cold) Output Connectors Male XLR; Pin 1 Ground, Pin 2 + (Hot) Pin 3 - (Cold) Power Requirements 220/240 - 100/1

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