Mc960pa Remote Power Amplifier Installation Instructions

Transcript

PRINTER’S INSTRUCTIONS: INSTR,INSTL,MC960PA - LINEAR P/N: 227569 A - INK: BLACK - MATERIAL: 20 LB. MEAD BOND - SIZE: 8.500” X 11.000” - SCALE: 1-1 - FOLDING: ALBUM FOLD - BINDING: SADDLE STITCH INTRODUCTION The Model MC960PA Remote Power Amplifier is an optional upgrade stereo power amplifier designed for use with the dmc1 and dmc3-4 Music/Communication System Masters. The wall mounted amplifier can power up to ten pairs of 45-ohm intercom speakers for stereo sound distribution. Each pair of speakers connects to the MC960PA amplifier through a Model SVC96 or SVC96I Stereo Volume Control. Monaural installations with up to 20 speakers per amplifier are also supported using Model MVC1 or MVC1A Monaural Volume Controls. The volume control sets the sound level in the room for the specific pair of speakers. The MC960PA amplifier connects to 120 VAC for power. Wiring connections are provided for connecting up to three MC960PA amplifiers per system for increased speaker capacity. MC960PA REMOTE POWER AMPLIFIER INSTALLATION INSTRUCTIONS The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product. The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of un-insulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. SAFETY INSTRUCTIONS Read Instructions - All the safety and operating instructions should be read before the appliance is operated. Retain Instructions - The safety and operating instructions should be retained for future reference. Heed Warnings - All warnings on the appliance and in the operating instructions should be adhered to. Follow Instructions - All operating and use instructions should be followed. Water and Moisture - The appliance should not be used near water - for example: near bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, and the like. Attachments - Do not use attachments not recommended by the product manufacturer as they may cause hazards. Ventilation - The appliance should be situated so that its location or position does not interfere with its proper ventilation. For example, the appliance should not be situated on a bed, sofa, rug, or similar surface that may block the ventilation openings: or, placed in a built in installation, such as a bookcase or cabinet that may impede the flow of air to the ventilation openings. Heat - The appliance should be situated away from heat sources such as radiators, heat registers, stoves, or other appliances (including amplifiers) that produce heat. Power Sources - The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance. Grounding or Polarization - Precautions should be taken so that the grounding or polarization means of an appliance is not defeated. Power Lines - An outdoor antenna should be located away from power lines. Outdoor Antenna Grounding - If an outside antenna is connected to the receiver, be sure the antenna system is grounded so as to provide some protection against voltage surges and built up static charges. Section 810 of the National Electrical Code, ANSI/NFPA No. 70 1984, provides information with respect to proper grounding of the mast and supporting structure, grounding of the lead in wire to an antenna discharge unit, size of grounding conductors, location of antenna discharge unit, connection to grounding electrodes, and requirements for the grounding electrode (see figure). Object and Liquid Entry - Never push objects of any kind into this product through openings as they may touch dangerous voltage points or short out parts that could result in a fire or electric shock. Never spill liquid of any kind on the product. Servicing - The user should not attempt to service the appliance beyond that described in the operating instructions. All other servicing should be referred to qualified service personnel. Damage Requiring Service - The appliance should be serviced by qualified service personnel when: ■ The power supply cord or the plug has been damaged; or ■ Objects have fallen, or liquid has been spilled into the appliance; or ■ The appliance has been exposed to rain; or the appliance does not appear to operate normally or exhibits a marked change in performance; or ■ The appliance has been dropped, or the enclosure damaged. ■ When the product exhibits a distinct change in performance - this indicates a need for service. Replacement Parts - When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer or have the same characteristics as the original part. Unauthorized substitutions may result in fire, electric shock, or other hazards. Safety Check - Upon completion of any service or repairs to this product, ask the service technician to perform safety checks to determine that the product is in proper operating condition. Wall or Ceiling Mounting - The product should be mounted to a wall or ceiling only as recommended by the manufacturer. IMPORTANT DO’S & DON’TS ✔ DO ensure that all instructions have been followed before power is applied to system. ✔ DO use only M&S systems brand cable as called out in these instructions. The cable is designed and constructed with electrical specifications necessary for proper audio performance. ✔ DO NOT power up master until all speakers and the amplifier are connected. ✔ DO NOT splice cables. Splices are unreliable and defeat the signal isolation properties of the cable. ✔ DO NOT connect extra cables to the amplifier. If extra cables have been run for possible future speaker additions, care must be taken that these cables do not get connected. Un-terminated cables may damage the master or amplifier. ✔ DO NOT over-tighten the screws for the volume controls, speakers, intercom master, or the amplifier to prevent cracking. ✔ DO NOT install any amplifier or speaker cables inside the 120 VAC J-box. ✔ DO NOT install the amplifier in a generator room. ✔ DO NOT coil or bundle the cables. This can cause electronic feedback. 1 INSTALLATION PLANNING The remote power amplifier should be located in a closet or utility room within 6 feet of a standard NEMA 5-15R 120 VAC receptacle wired to a dedicated 10-amp circuit breaker. Do not install the amplifier in an attic or in a humid environment. DO NOT INSTALL ANY AMPLIFIER OR SPEAKER CABLES INSIDE THE 120 VAC J-BOX! Do not install within 18” of light controls, switches, or fan controls. Determine the locations for each speaker pair (or single speakers in monaural installations). Determine the locations for the volume control for each speaker area. MS5X5SC CABLES TO VOLUME CONTROLS DOUBLE-GANG OR LARGER J-BOX MS7X5SC CABLE FROM INTERCOM MASTER BOTTOM EDGES 9-1/4" APART MS7X5SC CABLE TO SECOND MC960PA AMPLIFIER (OPTIONAL) INSTALLATION ROUGH-IN Install a single-gang and a two-gang J-box on each side of a wall stud at the amplifier mounting location. Be sure to space the two boxes apart so the bottom edges are 9-1/4” apart. This will allow the wires to align with the wiring holes on the MC960PA mounting plate. If additional MC960PA amplifiers are going to be used for a multi-amplifier installation (up to three amplifiers per system allowed), repeat the above steps by installing another two J-boxes at each amplifier’s location. For the speaker areas, install a single-gang J-box for each volume control. Install any speaker rough-in rings required to mount the speakers. SINGLE-GANG J-BOX WALL STUD Figure 1. J-box Rough-in MS5X5SC CABLE VOLUME CONTROLS L R MS7X5SC CABLE L R PRIMARY MC960PA AMPLIFIER CABLE ROUTING Route MS7X5SC cable from the dmc1H or dmc1HC wall housing to the single-gang J-box installed for the amplifier. If additional MC960PA amplifiers are going to be used for a multi-amplifier installation, route MS7X5SC cable from the primary amplifier’s single-gang J-box to the second amplifier’s single-gang J-box, then from the second amplifier’s single-gang J-box to the third amplifier’s single-gang J-box. Route MS5X5SC cable from the double-gang J-box installed for the amplifier(s) to each volume control J-box. Route MS2SX5SC cable from each volume control J-box to each speaker location. MS2SX5SC CABLE DMC1 OR DMC3-4 MASTER INTERCOM L R 45-OHM STEREO SPEAKER PAIRS L R MS5X5SC CABLE MS7X5SC CABLE OPTIONAL ADDITIONAL MC960PA AMPLIFIER MS2SX5SC CABLE 45-OHM MONAURAL SPEAKERS EACH AMPLIFIER CAN BE EITHER STEREO OR MONAURAL Figure 2. Cable Routing WIRE PREPARATION Prepare both ends of all cables. 1. On MS2SX5SC and MS5X5SC cables, strip off the cable’s jacket four inches back. 2. On MS7X5SC cables, strip off the cable’s jacket two inches back. 3. On the MS5X5SC cables, the gray and brown wires are not used. Cut off these two wires, their foil shield, and their enclosed shield wire at the end of the cable’s jacket. 4. Pull back the remaining foil shield(s) and separate the bare shield wire(s). Note: There are two foil shields and two shield wires on MS7X5SC cable. 5. Tear off all foil shields at the end of the cable’s jacket. 6. Separate the colored wires from each other. 7. On MS2SX5SC and MS5X5SC cables, strip off the colored wire insulation 1/2” back. 8. On MS7X5SC cables, strip off the colored wire insulation 1/4” back. 2 4 INCHES YELLOW JACKET MS2SX5SC 2-CONDUCTOR CABLE 1/2 INCH STRIP SHIELD WIRE 4 INCHES BROWN JACKET MS5X5SC 5-CONDUCTOR CABLE CUT OFF BROWN & GRAY WIRES 1/2 INCH STRIP SHIELD WIRE GREEN JACKET 1/4 INCH STRIP MS7X5SC 7-CONDUCTOR CABLE 2 INCHES Figure 3. Wire Preparation AMPLIFIER MOUNTING The MC960PA amplifier installs on the wall stud where the two J-boxes have been mounted. The amplifier’s mounting plate has three protective wiring bushings. The cables from the J-boxes route through these bushings. When the amplifier is properly mounted, the bushings will align with the J-box openings. 1. Loosen the four side screws, remove the fifth case screw near the power connector. Remove the cover of the amplifier. Discard all cardboard and packing pieces from the amplifier. 2. With a stud finder, locate the center of the stud and mark it on the wall. 3. Hold the amplifier centered on the wall stud so the wiring bushings align with the J-boxes. Mark the location for the top mounting screw at the top of the keyhole slot on the mounting plate. Set the amplifier down. 4. Screw one of the mounting screws provided into the location marked in Step 3. Leave the screw head out a bit so the keyhole slot will fit over it. 5. Hold the amplifier up to the wall and route the cables through the wiring bushings. Hang the amplifier on the screw through the keyhole slot. 6. Install the bottom mounting screw supplied into the stud through the bottom hole in the mounting plate. 7. Tighten both screws. TO VOLUME CONTROLS TOP MOUNTING SCREW MC960PA AMPLIFIER WALL STUD BOTTOM MOUNTING SCREW MS7X5SC INPUT CABLE FROM INTERCOM MASTER Figure 4. Amplifier Mounting BLUE YELLOW RED BLACK WHITE VIOLET GREEN SHIELDS MS7X5SC CABLE CONNECT WIRES ON BOTH ENDS OF MS7X5SC CABLES TO TERMINAL BLOCKS IN THIS ORDER BOTH SHIELD DRAIN WIRES Figure 5. Terminal Block Wiring PLUG TERMINAL BLOCK INTO MASTER SHIELD WIRE END BLUE WIRE END MASTER AUXILIARY OUTPUT CONNECTOR INTERCOM MASTER MS7X5SC CABLE TO AMPLIFIER AMPLIFIER INPUT HOOKUP There are two connectors on the MC960PA amplifier. One labeled PREAMP INTERCONNECT is the low-level audio input for the amplifier that comes from the Intercom Master. The second connector labeled TO SECOND AMP is only used in multi-amplifier installations. It serves as a low-level audio output that connects to the next amplifier’s input. 1. Remove the plug-in terminal block from the MC960PA connector labeled PREAMP INTERCONNECT. 2. Connect the amplifier end of the MS7X5SC cable to the plug-in terminal block (see Figure 5). 3. Plug the terminal block into the MC960PA connector labeled PREAMP INTERCONNECT. MS5X5SC OUTPUT CABLES TO VOLUME CONTROLS FROM INTERCOM MASTER INTERCOM MASTER HOOKUP The MC960PA amplifier input connects to the dmc1 or dmc3-4 auxiliary audio output. The wiring connections are made using 8-position plug-in terminal blocks. Each MC960PA amplifier is supplied with two of these plug-in terminal blocks. 1. Remove the plug-in terminal block from the MC960PA connector labeled TO SECOND AMP by pulling the screw terminal part straight up from the circuit board. This plug-in terminal block will be used will be used on the Intercom Master end of the MS7X5SC cable to connect the cable to the master. 2. Connect the Intercom Master end of the MS7X5SC cable to the plug-in terminal block (see Figure 5). 3. Plug the terminal block into the Intercom Master’s auxiliary audio output connector. KEYHOLE SLOT Figure 6. Intercom Master Hookup PLUG TERMINAL BLOCK INTO PREAMP INTERCONNECT CONNECTOR ON AMPLIFIER MS7X5SC CABLE FROM MASTER BLUE WIRE END SHIELD WIRE END MC960PA AMPLIFIER Figure 7. Amplifier Input Hookup 3 MULTI-AMPLIFIER INSTALLATION Up to two additional MC960PA amplifiers can be connected to the primary amplifier for increased speaker capacity. On each amplifier, the connector labeled TO SECOND AMP serves as a low-level audio output for the next amplifier’s input. 1. On the additional amplifiers, remove both plug-in terminal blocks. 2. Connect each end of the additional amplifier’s MS7X5SC cable (routed during rough-in) to the plug-in terminal blocks (see Figure 7). 3. On the primary MC960PA amplifier, plug the terminal block into the connector labeled TO SECOND AMP. 4. On the second MC960PA amplifier, plug the terminal block on the cable from the primary amplifier into the connector labeled PREAMP INTERCONNECT. 5. On the second MC960PA amplifier, plug the terminal block on the cable to the third amplifier into the connector labeled TO SECOND AMP. 6. On the third MC960PA amplifier, plug the terminal block on the cable from the second amplifier into the connector labeled PREAMP INTERCONNECT. DMC1 OR DMC3-4 MASTER INTERCOM MS7X5SC CABLE "TO SECOND AMP" CONNECTOR "TO SECOND AMP" CONNECTOR MS7X5SC CABLE "PREAMP INTERCONNECT" CONNECTOR MS7X5SC CABLE "PREAMP "PREAMP PRIMARY INTERCONNECT" SECOND INTERCONNECT" THIRD CONNECTOR CONNECTOR MC960PA MC960PA MC960PA AMPLIFIER AMPLIFIER AMPLIFIER BLUE YELLOW RED BLACK WHITE VIOLET GREEN SHIELDS MS7X5SC CABLE CONNECT WIRES ON BOTH ENDS OF MS7X5SC CABLES TO TERMINAL BLOCKS IN THIS ORDER BOTH SHIELD DRAIN WIRES Figure 8. Multi-amplifier Hookup STEREO/MONAURAL CONFIGURATION The MC960PA amplifier has a jumper block that selects stereo or monaural operation. The factory setting, with the jumper on one pin, selects stereo operation. When the jumper block is placed on the two pins, monaural operation is selected. In multi-amplifier installations, each amplifier’s jumper can be set independently. Stereo Operation When the amplifier is operating in stereo mode, the GREEN output terminal is the left channel and the VIOLET output terminal is the right channel. Up to ten left-right pairs of 45-ohm speakers (20 speakers total), with each speaker pair wired through a stereo volume control, can be connected to the amplifier. The two WHITE output terminals are common. Monaural Operation When the amplifier is operating in monaural mode, the left and right channels are combined. The GREEN output terminal and the VIOLET output terminal produce the same signal. Each terminal is capable of powering up to ten 45-ohm speakers (20 speakers total), with each speaker wired through a monaural volume control. The two WHITE output terminals are common. MC960PA AMPLIFIER JUMPER IN STEREO POSITION (FACTORY SETTING) JUMPER IN MONAURAL POSITION Figure 9. Stereo/Monaural Jumper MS5X5SC CABLES THROUGH BUSHINGS TO VOLUME CONTROLS USE CABLE JACKETS TO INSULATE SHIELD WIRES AMPLIFIER OUTPUT WIRING Five large screw terminals at the top of the amplifier connect to the MS5X5SC cables that route to the volume controls. Two other terminals at the top left of the amplifier (GRAY & BROWN) are not used in this application. 1. Connect the GREEN wires from all the MS5X5SC cables to the MC960PA GREEN terminal. 2. Connect the VIOLET wires from all the MS5X5SC cables to the MC960PA VIOLET terminal. 3. Connect the WHITE wires from all the MS5X5SC cables to either MC960PA WHITE terminal. 4. Connect the SHIELD wires from all the MS5X5SC cables to the MC960PA SHIELD terminal. To prevent shorting to other terminals, insulate bare shield wires with leftover cable jackets. 4 SHIELD TERMINAL GREEN TERMINAL (LEFT CHANNEL) TWO WHITE TERMINALS (COMMON) VIOLET TERMINAL (RIGHT CHANNEL) CAUTION! A MAXIMUM OF TEN 45-OHM INTERCOM SPEAKERS CAN BE CONNECTED TO THE GREEN TERMINAL AND TEN 45-OHM INTERCOM SPEAKERS CAN BE CONNECTED TO THE VIOLET TERMINAL. EXCEEDING THIS NUMBER OF SPEAKERS OR USING 8-OHM SPEAKERS WILL OVERLOAD THE AMPLIFIER. Figure 10. Amplifier Output Wiring STEREO VOLUME CONTROL RIGHT & SPEAKER WIRING Each stereo speaker pair is connected to the MC960PA amplifier through a Model SVC96 Stereo Volume Control. MS5X5SC cable connects the amplifier to the volume control. MS2SX5SC cable connects the volume control to the speakers. Use wire nuts for the following connections. To prevent shorting to the back of the volume control, insulate bare shield wires in the J-box with leftover cable jackets. Volume Control End of the Brown Amplifier Cable 1. Connect the MS5X5SC cable’s GREEN wire to the SVC96 GREEN wire labeled MASTER. 2. Connect the MS5X5SC cable’s VIOLET wire to the SVC96 VIOLET wire labeled MASTER. 3. Connect the MS5X5SC cable’s WHITE wire to the SVC96 WHITE wire labeled MASTER. LEFT 45-OHM INTERCOM SPEAKERS VIOLET INSULATE SHIELD WIRES WITH LEFTOVER CABLE JACKETS BLUE VIOLET BLUE MS2SX5SC SPEAKER CABLE MS2SX5SC SPEAKER CABLE SHIELD SHIELD Volume Control End of the Yellow Speaker Cables 1. Connect the two MS2SX5SC speaker cable’s SHIELD wires to the MS5X5SC cable’s SHIELD wire. 2. Connect the left speaker’s MS2SX5SC cable’s VIOLET wire to the SVC96 VIOLET wire labeled L SPEAKER. 3. Connect the left speaker’s MS2SX5SC cable’s BLUE wire to the SVC96 BLUE wire labeled L SPEAKER. 4. Connect the right speaker’s MS2SX5SC cable’s VIOLET wire to the SVC96 VIOLET wire labeled R SPEAKER. 5. Connect the right speaker’s MS2SX5SC cable’s BLUE wire to the SVC96 BLUE wire labeled R SPEAKER. Speaker End of the Yellow Speaker Cables 1. Connect the left speaker’s MS2SX5SC cable’s VIOLET wire to the left speaker’s VIOLET (or BLACK) wire. 2. Connect the left speaker’s MS2SX5SC cable’s BLUE wire to the left speaker’s BLUE (or RED) wire. Cut off the SHIELD wire. 3. Connect the right speaker’s MS2SX5SC cable’s VIOLET wire to the right speaker’s VIOLET (or BLACK) wire. 4. Connect the right speaker’s MS2SX5SC cable’s BLUE wire to the right speaker’s BLUE (or RED) wire. Cut off the SHIELD wire. MONAURAL VOLUME CONTROL & SPEAKER WIRING Each monaural speaker is connected to the MC960PA amplifier through a Model MVC1 Monaural Volume Control. MS5X5SC cable connects the amplifier to the volume control. MS2SX5SC cable connects the volume control to the speaker. Use wire nuts for the following connections. ✔ NOTE: To keep the amplifier balanced, split the total number of speakers evenly as possible between the GREEN and VIOLET output wires. Volume Control End of the Brown Amplifier Cable 1A. For half of the monaural speakers (up to 10), connect the MS5X5SC cable’s GREEN wire to the MVC1 GREEN wire labeled MASTER and cut off the cable’s VIOLET wire. 1B. For half of the monaural speakers (up to 10), connect the MS5X5SC cable’s VIOLET wire to the MVC1 GREEN wire labeled MASTER and cut off the cable’s GREEN wire. 2. For all monaural speakers, connect the MS5X5SC cable’s WHITE wire to the MVC1 RED wire labeled MASTER. BLUE BLUE VIOLET MS5X5SC CABLE FROM MC960PA AMPLIFIER VIOLET SVC96 STEREO VOLUME CONTROL SHIELD WHITE VIOLET BROWN GRAY THESE WIRES ARE NOT CONNECTED GREEN Figure 11. Stereo Volume Control & Speaker Wiring 45-OHM INTERCOM SPEAKER MS5X5SC CABLE FROM MC960PA AMPLIFIER INSULATE SHIELD WIRES WITH LEFTOVER CABLE JACKETS SHIELD VIOLET BROWN WHITE GRAY THESE WIRES ARE NOT CONNECTED SHIELD GREEN BLUE MS2SX5SC SPEAKER CABLE RED VIOLET VIOLET BLUE - OR - Volume Control End of the Yellow Speaker Cables 1. Connect the MS2SX5SC speaker cable’s SHIELD wire to the MS5X5SC cable’s SHIELD wire. 2. Connect the MS2SX5SC cable’s VIOLET wire to the MVC1 VIOLET wire labeled SPEAKERS. 3. Connect the MS2SX5SC cable’s BLUE wire to the MVC1 BLUE wire labeled SPEAKERS. Speaker End of the Yellow Speaker Cables 1. Connect the MS2SX5SC cable’s VIOLET wire to the speaker’s VIOLET (or BLACK) wire. 2. Connect the MS2SX5SC cable’s BLUE wire to the speaker’s BLUE (or RED) wire. Cut off the SHIELD wire. GREEN IMPORTANT! UP TO TEN 45-OHM SPEAKERS CAN BE CONNECTED TO THE VIOLET WIRE AND UP TO TEN 45-OHM SPEAKERS CAN BE CONNECTED TO THE GREEN WIRE. CUT OFF THE UNUSED VIOLET OR GREEN WIRE AT EACH VOLUME CONTROL. MVC1 MONAURAL VOLUME CONTROL Figure 12. Monaural Volume Control & Speaker Wiring 5 POWER UP AND TESTING Before applying power, double check all the wiring connections at the master, the amplifier, and the volume controls. 1. Complete any necessary installation of the Intercom Master, its Room Stations, and accessories. Install the master into its wall housing. 2. Complete any finish-out required for the volume controls. Set each volume control to mid level. 3. Complete any finish-out required for the speakers. 4. Replace the amplifier’s cover and tighten the cover screws. 5. Apply power to the Intercom Master. For testing, select a strong FM radio station on the master. Verify that the station’s audio is coming out of the master’s speaker. 6. Insert the female end of the 120 VAC line cord into the power input plug on the bottom of the MC960PA amplifier. 7. Plug the male end on the line cord into the wall receptacle designated for the amplifier. (In multi-amplifier installations, repeat Steps 4, 6, & 7 for the additional amplifiers.) 8. When the amplifier(s) is powered up, the radio station playing on the master should also be playing on all the system speakers. 9. Go to each volume control and test the performance at each speaker area. INSERT LINE CORD INTO POWER INPUT PLUG Figure 13. AC Line Cord Connection TROUBLESHOOTING If a problem is encountered after completing the installation, refer to the following troubleshooting table for a guide to correcting the problem. TROUBLESHOOTING TABLE SYMPTOM SOLUTION 1. AC line cord not connected. 2. No 120 VAC power at AC outlet. 3. Verify that audio is playing at the master. 4. Check the audio input connectors on the amplifier. Verify that the wire colors are correct and that the plug-in connectors are firmly seated. NO AUDIO OUTPUT 5. Check the audio output connector on the master. Verify that the wire colors are correct and that the plug-in connectors are firmly seated. 6. Re-check all wiring per these installation instructions. 7. Check for a blown amplifier fuse. If the fuse is blown the amplifier was overloaded. THE AMPLIFIER IS DESIGNED FOR 45-OHM SPEAKERS ONLY! DO NOT USE 8-OHM SPEAKERS! Replace the fuse (lower right corner of circuit board, under a clear snap-on cover) with a 2 amp, 250 V, 5 x 20 mm, SLO-BLO® fuse (Littelfuse® part number 218002). 1. Check for ground loops. Shielded cables should only be grounded (with the shield “drain” wire) at the source end. AUDIO DISTORTION 2. Check for mechanical vibration at the speakers. Verify that the speaker mounting is secure and there is no loose hardware. Check for wires or cables touching the back of the speaker’s cone. 3. Possible damaged speaker, swap with another and test again. LOSS OF BASS (STEREO ONLY) VOLUME CONTROLS INOPERATIVE 1. Check for stereo speaker pairs wired out of phase (wires flipped on one speaker). Listen to the pair while moving from one speaker to the other. An abrupt change from one speaker to the other indicates a possible phasing problem. 1. Check for a wiring error. Re-check all wiring per these installation instructions. 1. Shorts to ground through shield drains at volume controllers or at the Power Amp (ensure shield drains are isolated). 2. Verify the speakers connected are 45-ohm speakers (8-ohm speakers can appear as a short). SHORTED POWER AMP (HOT HEAT SINKS, DISTORTED AND/OR LOW SOUND, THERMAL SHUTDOWN) 3. Install only ten 45-ohm speakers per channel. 4. On the SVC96 (stereo volume control) install only 1 speaker per channel (one for left, one for right) – MAXIMUM OF TWO 45-OHM SPEAKERS PER SVC96 STEREO VOLUME CONTROL. 5. On the MVC1 (monaural volume control) install only 1 speaker – MAXIMUM OF ONE 45-OHM SPEAKER PER MVC1 MONAURAL VOLUME CONTROL. 6 MC960PA REMOTE POWER AMPLIFIER STEREO INSTALLATIONS UP TO 10 PAIRS OF 45-OHM SPEAKERS CAN BE CONNECTED TO THE GREEN (LEFT CHANNEL) AND VIOLET (RIGHT CHANNEL) TERMINALS, EACH PAIR THROUGH AN SVC96 VOLUME CONTROL MONAURAL INSTALLATIONS WARNING! UP TO 10 45-OHM SPEAKERS CAN BE CONNECTED TO THE GREEN TERMINAL, UP TO 10 45-OHM SPEAKERS CAN BE CONNECTED TO THE VIOLET TERMINAL, EACH SPEAKER THROUGH AN MVC1 VOLUME CONTROL UNPLUG THE POWER CORD BEFORE REMOVING THE AMPLIFIER COVER MS5X5SC TO VOLUME CONTROL USE 45-OHM SPEAKERS ONLY! DO NOT WIRE SPEAKERS IN SERIES OR N/C N/C SHIELD AMPLIFIER OUTPUTS GREEN WHITE VIOLET STEREO/MONO JUMPER MONAURAL N/C N/C N/C BLUE YELLOW RED BLACK WHITE VIOLET GREEN SHIELD STEREO POWER FUSE 2 AMP SLO-BLO TO SECOND AMP PREAMP INTERCONNECT AMPLIFIER INPUT FOR CONTINUED PROTECTION AGAINST FIRE, REPLACE WITH THE SAME TYPE FUSE ONLY MS7X5SC FROM INTERCOM MASTER OR FROM ANOTHER MC960PA AMPLIFIER MS7X5SC TO ADDITIONAL MC960PA AMPLIFIER Figure 14. Amplifier Wiring Overview 7 M&S Systems Brand & AirVac Brand 2-Year Limited Warranty Linear LLC warrants its M&S Systems and AirVac brand products to be free of defects for 2 years except for the WG Series Speakers and AirVac Platinum and Red series power units (see below). The warranty period begins on either (a) the date of purchase or installation date of this product, or (b) the date of closing on a new residence in which this product was originally installed. The warranty extends to the original user of the product and to each subsequent owner of the product during the term of the warranty. Linear will repair or replace, at its option, parts and materials at no charge. Parts supplied under this warranty may be new or rebuilt at the option of Linear. If, during the warranty period, the product appears to have a defect, please call our toll free number (800-421-1587) prior to dismantling. Dismantling the product prior to calling our service number may void the warranty. Before returning any product to Linear, obtain a Return Product Authorization (RPA) number from our service department. Linear will return the repaired product freight prepaid within the continental United States. ANY PRODUCT RETURNED TO LINEAR WITHOUT AN RPA NUMBER WILL BE REFUSED. This limited warranty is in lieu of any other warranties, express or implied, including any implied warranty of merchantability or fitness for a particular purpose or otherwise, and of any other obligations or liability on the seller’s part. This limited warranty does not cover damage caused by improper installation, acts of God, criminal acts, the violation of applicable building or electrical codes or the use of non-M&S wire, cable (excluding CAT-5 and RG-6) or wall housings. Under no circumstances shall Linear be liable for consequential, incidental or special damages arising in connection with use, or inability to use this product. In no event shall Linear’s liability hereunder exceed the cost of the product covered hereby. No person is authorized to assume for us or obligate us for any other liability in connection with the sale of this product. Some states do not allow the exclusion or limitation of consequential, incidental or special damages, so the above limitation or exclusion may not apply to you. This limited warranty gives you specific legal rights, and you may also have other rights, which vary from state to state. 5/10-Year Limited Warranty for AirVac Platinum and Red Series Power Units and WG Series Speakers Linear offers a 10-Year Warranty on our AirVac Platinum series power units and WG Series Speakers (5-Years on AirVac Red series power units). This warranty is identical to the M&S Systems & AirVac 2-Year Warranty, with the exception that this warranty covers the AirVac Platinum and Red series power units and WG Series Speakers for 5 or 10 years instead of 2. This Linear warranty applies ONLY to the AirVac Platinum and Red series power units and WG Series Speakers and to no other M&S Systems products, AirVac products, or M&S Systems 8-ohm speaker products. A Linear Home Technologies Brand Copyright © 2007 Linear LLC 227569 A