Instruction/ maintenance manual of the product MSL-4 Meyer Sound
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Operating I nstruc tions MSL-4 Self-Powered Loudspeaker System Copyright © 1999 Meyer Sound Laboratories, Inc. All rights reserved. Part # 05.031.008.
2 English F rançais Deutsch Español Safety Summar y • T o reduce the risk of electric shock, disconnect the loud- speaker from the AC mains bef ore installing audio cable. Reconnect the pow er cord only af ter mak ing all signal connections. • Connect the loudspeaker to a two-pole , three wire grou nd- ing mains receptacle.
3 Contents Safety Summary ................................................................... 2 Introduction ................................................................... 4 AC Power ...............................................................
4 Introduction The MSL -4 se lf-p ower ed louds peake r syste m is idea l for lar ge venues requiring long throw distances and precise coverage, but can a lso be used ef fecti vely i n smal ler ap plica tions .
5 grounding adapter when connecting to ungrounded out- lets. Do not use a ground-lifting adapter or cut the AC cable ground pin. Keep all liquids away from the MSL-4 to avoid hazards from electrical shock. Do not operate the unit if the power cables are frayed or broken.
6 P ow er C o nn ec to r W ir in g Use the following AC cable wiring diagram to create interna- tional or special-purpose power connectors: brown = hot blue = neutral yellow/green = earth ground (chas.
7 longer t han two seconds , and off for at least one second. If either LED remains on for longer than three seconds, that channel is hard limiting with these negative consequences: • Increasing the input level will not increase the vol- ume. • The system distorts due to clipping and nonlinear driver operation.
8 Rigging T wo types of rigging hardware are available to fly the MSL- 4 loudspeaker system: Aircraft pan fittings and the optional L-T rack system. Both are installed and tested exclusively at Meyer Sound Laboratories. Aircraft Pan Fittings Only The MSL -4 without L-T rack weighs 184 lb (83.
9 The MSL-4 equipped with the L-T rack rigging system weighs 205 lbs (93 kg). The maximum recommended load for an L-T rack-equipped MSL-4 at vertical pull using any 2 points is 1500 lbs. (682 kg) .W e strongly recommed using all four rigging points per end.
10 Measurement and System Integration T ools It is essential that even the most carefully assembled sound systems be analyzed with precise measurement tools.
11 LD-1A with MSL-4 and 650-P A typic al MSL-4:650-P ratio is 2:1 but separate Sub and Mid- Hi level controls on the LD-1A allow the ratio to vary while mai ntain ing contr ol of the spec tral balan ce of the syst em. The Lo Cut filter for CH1 Mid-Hi should be in to correct the LF rise between the MSL-4 and 650-P.
12 Driver T roubleshooting T roubleshooting with TPL The T PL LE D ca n in dica te s erio us d rive r pr oble ms, if i nter pret ed correctly . If one MSL-4 in a system exhibits substantially more TPL activity than others receiving the same audio signal, then one or both drivers in that unit may hav e a sh ort c ircu it.
13 Pha se poppe rs are, the refor e, not usef ul for perf ormin g phase measurements on an individual loudspeaker or a full-range sound system containing one or more crossovers.
14 Array Design Creating an effective array with the MSL-4 requires a precise understanding of how to combine the coverage area and SPL of the individual speaker with those of adjacent speakers.
15 Complementary power MOSFET output stages class AB/H 1240 W atts (620 W atts/channel) < .02 % Acoustical Frequency Response 1 ±4dB 65Hz-18kHz:-6dB at 60Hz and 20kHz ±30° 450Hz-10kHz 140dB >.
16 ATENCIÓN : ACCESO INTERNO SOLO AUTORIZADO A PERSONAL TÉCNICO C ACHTUNG : GEHÄUSE NICHT ÖF UND REPARATUR NUR DURCH EE ATTENTION : ENTRETIEN ET RS INTERNES NE SONT AUTORIU PERSONNEL TECHNIQUE QUALIFIÉ UK WARNING : THIS APPARARTHED.
17 Dimensions Front Side T op (in inches) 36.00" 5.50" 16.50" 30.00" 17.50" 13.36" 21.97" 10.63" 13.16" 21.
An important point after buying a device Meyer Sound MSL-4 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Meyer Sound MSL-4 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Meyer Sound MSL-4 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Meyer Sound MSL-4 you will learn all the available features of the product, as well as information on its operation. The information that you get Meyer Sound MSL-4 will certainly help you make a decision on the purchase.
If you already are a holder of Meyer Sound MSL-4, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Meyer Sound MSL-4.
However, one of the most important roles played by the user manual is to help in solving problems with Meyer Sound MSL-4. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Meyer Sound MSL-4 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
