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Operating Instructions
PSW-2
Self-Powered Subwoofer
Patents Pending
Copyright © 1997, Meyer Sound Laboratories, Inc.
All rights reserved
Part #: 05.047.033.01 Rev A
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Contents Introduction .......................................................... 3 Measurement and System Integration Tools ....... 8 AC Power .............................................................. 3 Full-Range Systems ................................................ 8 Audio Input ........................................................... 5 Driver Troubleshooting.........................................10 Amplification and Protection Circuitry ............... 5 Safety Summary...........
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The PSW-2 can withstand continuous voltages up to Introduction 275 V and allows any combination of voltage to GND (i.e. Neutral-Hot-GND, Hot-Hot-GND). Continuous voltages higher than 275 V may damage the unit. The Meyer PSW-2 self-powered subwoofer contains The PSW-2 uses a NEMA L6-20P or IEC 309 male power independent amplifier and control electronics for two inlet and satisfies UL, CSA, and EC safety standards. 15” drivers in a compact enclosure. The PSW-2 has the following acoustical specific
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Safety Issues Current Requirements Pay close attention to these important electrical and The PSW-2 presents a dynamic load to the AC mains safety issues. which causes the amount of current to fluctuate between quiet and loud operating levels. Since different types of cables and circuit breakers heat up (and trip) at varying rates, it is essential to understand the types of current ratings and how they correspond to circuit breaker and cable specifications. Use a power cord adapter to drive the P
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A single source can drive multiple PSW-2s with a paral- Power Connector Wiring Conventions leled input loop, creating an unbuffered hardwired loop connection. Make certain that the source equipment Use the following AC cable wiring diagram to create can drive the total load impedance presented by the paral- international or special-purpose power connectors: leled input circuit. For example, since the input impedance of a single PSW-2 is 10 kΩ, cascading 20 PSW-2s brown = hot blue = produces a b
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The PSW-2 performs within its acoustical specifications A foam insert filter, in combination with the entire front and operates at a normal temperature if the TPL LED is grill surface, acts as an air filter for the cooling system. on for no longer than two seconds, and off for at least Despite the filtering, extensive use or a dusty operating one second. If the LED remains on for longer than three environment can allow dust to accumulate along the seconds, the PSW-2 is hard limiting with these n
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Rigging Configuration, Placement, and Polarity The PSW-2 weighs 162 lb (73.5 kg). The maximum rec- ommended load for a single cabinet with aircraft pan Designing a full-range system requires an understanding fittings is 600 lb (273kg). This working load is based on a of how subwoofers respond when grouped together, 5:1 safety factor. The PSW-2 has six rigging brackets how they interact with nearby walls and floors, and how (three on top and bottom). Each bracket is capable of their location in a
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We recommend using the Meyer LD-1A Line Driver to Placement integrate different types of Meyer self-powered speakers One of the most important factors governing subwoofer into a complete system. The LD-1A has two channels response is their placement relative to adjacent surfaces. equipped to control a full-range main system, and six Subwoofers gain significant power by coupling, or loading, auxiliary channels for down-fill, front-fill, and delay with nearby floors and walls. Half-space loading d
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The CH 1 Mid-Hi output drives the MSL-4 with the Lo PSW-2 and MSL-4 Cut filter in. The CH 1 Sub and DS-2 outputs drive the The PSW-2 is compatible with the MSL-4, CQ, and MTS-4. 650-Ps and PSW-2s with the DS-2 & Sub Crossover However, since the LF (low frequency) response for each switch out, which sends a full-range signal with inde- speaker overlaps with the PSW-2, the system frequency pendent level control to each speaker. response exhibits a rise in the range 65– 120 Hz (MSL-4), 40–120 Hz (C
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Driver Polarity in the Same Loudspeaker Driver Troubleshooting A cabinet with two identical drivers receiving the same input signal produces an extremely low amplitude output signal if the polarity of the drivers is reversed. Use the The Remote Monitoring System (RMS) is the best method following test procedure to verify the polarity between to query the status of the drivers in a system before and drivers in the same loudspeaker: during the performance. RMS monitors peak power, peak voltage, an
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! Safety Summary English Français • To reduce the risk of electric shock, disconnect the loud- • Pour réduire le risque d’électrocution, débrancher la speaker from the AC mains before installing audio cable. prise principale de l’haut-parleur, avant d’installer le Reconnect the power cord only after making all signal câble d’interface allant à l’audio. Ne rebrancher le bloc connections. d’alimentation qu’après avoir effectué toutes les connections. • Connect the loudspeaker to a two-po
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R R R R E E E E - - - - H H H H C C C C S S S S I I I I Controls and Connectors ! WARNINGS: THIS PRODUCT MUST BE GROUNDED This surface may reach high temperatures while in use. To ensure proper operation, allow at least 6 inches Mains AC inlet clearance from this surface and adequate ventilation. Mains circuit To reduce the risk of electric shock do not remove cover. No operator serviceable parts inside. breakers Refer servicing to qualified personnel. To reduce the risk of fire or electric
