Instruction/ maintenance manual of the product MX 1500a QSC Audio
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1 Owner’ s Manual ® A U D I O *TD-000026-00* Rev. B MX 1000a MX 1500a MX 2000a MX 3000a ▲ ▲ ▲ ▲ MXa Series.
2 MXa Series Power Amplifier Operation Manual T ABLE OF CONTENTS I. WARNING NOTICES ................................................. 3 Speaker Damage ....................................................... 3 Speaker Output Shock Hazard ..............
3 I. WARNING NOTICES SPEAKER DAMAGE The MXa Series amplifiers are among the most powerful professional amplifiers available and is capable of pro- ducing much more power than many loudspeakers can handle. It is the user ’ s responsibility to use suitable speakers with the amplifier and to use them in a sensible way that will not cause damage.
4 II. OVERALL DESCRIPTION The MXa Series from QSC comprises four high-effi- ciency professional power amplifier models, each with two independent channels.
5 III. INPUTS An MXa amplifier features balanced inputs, connected via barrier strip terminals or 1/4 ” (6.3 mm) tip/ring/sleeve phone jacks. The tip of the input jack is wired for “ nega- tive ’ or inverted polarity, while the ring is the non-inverting input.
6 IV . OUTPUTS Four “ touch-proof ” binding posts — one pair per chan- nel — on the rear panel allow speaker cable connections to the amplifier outputs. The special design allows con- nection of large diameter speaker cable while reducing shock hazard due to the high output power of MXa amplifiers.
7 TROUBLESHOOTING PROBLEM: Channel will not come out of muting • If reducing the gain control to ∞ attenuation does not release muting, the channel is defective or overheated (see “ Overheating, ” below).
8 SPECIFICATIONS MX 1000a MX 1500a MX 2000a MX 3000a 250 350 450 800 FTC Watts Per Channel 20Hz-20kHz, 0.1% THD EIA Watts Per Channel 1kHz, 1% THD 8 Ω Load 275 400 475 850 8 Ω Load 400 600 725 130.
9 MX 1000a MX 1500a MX 2000a MX 3000a CONNECTORS (each channel) Input: Barrier strip and 1/4 ” RTS phone jack Output: “ Touch-Proof ” binding posts COOLING MX 1000a, MX 1500a, MX 2000a: 2-speed .
10 PARALLEL, STEREO, OR BRIDGED OPERATION The Parallel-Stereo-Bridge switch is located on the input panel, next to the input jack for channel 1). The most commonly used operating mode for a power amplifier is “ Stereo, ” in which the two channels are independent and separate all the way from input to output.
11 VI. LONG-TERM OUTPUT POWER In a properly designed sound system, you can usually obtain the desired sound level without using the full output power of the amplifier; if the “ CLIP ” indicators flash once in a while, that is perfectly normal.
12 HEAT EMISSIONS Essentially, a power amplifier draws electrical energy from the AC mains, converts it to DC, and then converts it again into an analog of the input signal to send out to the loudspeakers.
13 output until it can be repaired, at which time the fuse should be replaced also. Temperature sensors on the channel heatsinks and the power transformers are part of the thermal management circuitry. On the MX 1000a, MX 1500a, and MX 2000a, the temperature sensors govern whether the dual-speed fan should run at low or high speed.
14 File Library QSControl Hardware Support QSControl Software Support EX, MXa, VS, USA, and Series One Slot Accessories General Notes File T ypes Graphics Mechanical drawings Specifications Applicatio.
15 X. IMPOR T ANT ADDRESS AND TELEPHONE INFORMA TION Factory address: QSC Audio Products, Inc. 1675 MacArthur Boulevard Costa Mesa, California 92626-1468 USA Factory telephone numbers: Main Number (714) 754-6175 Sales Direct Line (714) 957-7100 Sales (800) 854-4079 (toll-free in U.
16 ® A U D I O “ QSC ” is a registered trademark of QSC Audio Products, Inc. 1675 MacArthur Blvd. Costa Mesa, CA 92626 (714) 754-6175 FAX (714) 754-6174.
An important point after buying a device QSC Audio MX 1500a (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought QSC Audio MX 1500a 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 QSC Audio MX 1500a - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, QSC Audio MX 1500a you will learn all the available features of the product, as well as information on its operation. The information that you get QSC Audio MX 1500a will certainly help you make a decision on the purchase.
If you already are a holder of QSC Audio MX 1500a, 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 QSC Audio MX 1500a.
However, one of the most important roles played by the user manual is to help in solving problems with QSC Audio MX 1500a. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device QSC Audio MX 1500a 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
