Meyer Sound USW-1P manual

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Table of contents for the manual

  • Page 1

    Operating Instructions USW-1P (Serial Numbers 981000 and above) Self-Powered Subwoofer Copyright © 1997 Meyer Sound Laboratories, Inc. All rights reserved PN: 05.078.008.01 B Keep these important operating instructions.[...]

  • Page 2

    2 Contents Pour indiquer les risques résultant de tensions dangereuses Zu die gefahren von gefährliche spanning zeigen Important operating instructions Pour indequer important instructions Zu wichtige betriebs- anweisung und unter- haltsanweisung zeigen Frame or chassis Masse, châssis Rahmen oder chassis Protective earth ground Terre de protecti[...]

  • Page 3

    3 Introduction The Integrated Design The Meyer USW-1P self-powered subwoofer is composed of: • t wo 15 - inch cone drivers. • phase-corrected, optimized control electronics; • a two-channel amplifier ( 5 50 watts total ). The drivers, control electronics, and amplifier are integrated into a compact enclosure. The USW-1P paired with the UPA-P [...]

  • Page 4

    4 Current Requirements Each USW-1P requires approximately 3 A rms @115V (1.5 A rms @230V) for proper operation, allowing up to five USW- 1P to be powered from one 15 A circuit. However, we recom- mend powering no more than three USW-1Ps per 15 A branch to allow a 30% margin for peak voltages. The USW-1P presents a dynamic load to the AC mains which[...]

  • Page 5

    5 The Modular Rear Panel The rear panel of the USW-1P has two slots for modules. The top slot contains the Audio Input Module ; the bottom slot contains the optional Remote Moni toring System™ (RMS) Module . A blank plate covers the bottom slot if RMS is not installed. Audio Input There are three, interchangeable Audio Input Modules with optimize[...]

  • Page 6

    6 If either LED remains on for longer than three seconds, that channel incurs these consequences: • Increasing the input level will not increase the volume. • The system distorts due to clipping and nonlinear driver operation. While the USW-1P limiters fully protect the system under overload conditions and exhibit smooth sonic characteris- tics[...]

  • Page 7

    7 Full-Range Systems Introductory Concepts The USW-1P is used to add low frequency SPL to sound systems. It is optimized to be used with the Meyer UPA-P series self-powered loudspeakers. It can also be used with all Meyer Sound loudspeakers. For information on integrat- ing the USW-1P with the UPA-P, see the UPA-P Series Operating Instructions. For[...]

  • Page 8

    8 -8 -6 -4 -2 0 2 4 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 Distance in meters between wall and acoustical center of speaker. dB SPL relative to free-space response. SPL vs. Distance to Boundary As we have seen on the previous page, the placement of a USW-1P on a floor or against a boundary significantly changes the low frequency response when compared to fr[...]

  • Page 9

    9 Verifying Driver Polarity Incorrect driver polarity impairs system performance and may damage the drivers. All Meyer loudspeakers are shipped with the drivers in correct alignment. Polarity In Adjacent Loudspeakers Use the following test procedure to verify the polarity be- tween two USW-1P. 1. Establish a reference USW-1P, a speaker that has not[...]

  • Page 10

    10 Troubleshooting This section suggests several possible solutions to some com- mon problems encountered by USW-1P users and is not intended to be a thorough troubleshooting guide. Contact Meyer Sound for additional information and documentation. The On/Temp. LED does not illuminate, there is no audio, and the power supply fan is off. 1 . Make sur[...]

  • Page 11

    11 • To reduce the risk of electric shock, disconnect the loudspeaker from the AC mains before installing audio cable. Reconnect the power cord only after making all signal connections. • Connect the loudspeaker to a two-pole, three wire grounding mains receptacle. The receptacle must be connected to a fuse or circuit breaker. Connection to any[...]

  • Page 12

    12 Rear Panel and Optional Modules User Panel with RMS option and Standard Looping Audio Input Module. Looping, Polarity, and Attenuating Input Module Summing Audio Input Module The user panel and optional modules are described on page 5 of this guide. AC Input 100-240V ~ 50-60Hz 4A MAX RMS LEDs RMS Network Connectors Fan Connectors Rain Hood screw[...]

  • Page 13

    13 Dimensions (in inches) Meyer Sound Laboratories, Inc. 2832 San Pablo Avenue Berkeley, California 94702 Telephone: 510 - 486 - 1166 F A X : 510 - 486 - 8356 E-mail: t echsupport@meyersound.com http://www.meyersound.com AC Input 100-240V ~ 50-60Hz 4A MAX ! Meyer Sound, Berkeley, CA. USA CAUTION : See instruction manual ATTENTION : Voir le cahier d[...]