QSC MX 1500a - Manuals - manualsarea.com

Page 2 - Open Input Architecture; gefährlichen

2 MXa Series Power Amplifier Operation Manual T A B L E O F C O N T E N T S I. WARNING NOTICES ................................................. 3 Speaker Damage ....................................................... 3 Speaker Output Shock Hazard .................................. 3 Rack Mounting P...

Page 3 - CAUTION; S A F E G U A R D S

3 I. WARNING NOTICES SPEAKER DAMAGE The MXa Series amplifiers are among the most powerfulprofessional amplifiers available and is capable of pro-ducing much more power than many loudspeakers canhandle. It is the user’s responsibility to use suitablespeakers with the amplifier and to use them in a se...

Page 4 - II. OVERALL DESCRIPTION; Figure 1: QSC MX 1500a Front Panel (identical to the MX 1000a)

4 II. OVERALL DESCRIPTION The MXa Series from QSC comprises four high-effi-ciency professional power amplifier models, each withtwo independent channels. The MX 1000a, MX 1500a,and MX 2000a, can deliver, respectively, 275, 400, and475 watts into 8-ohm loads, and 400, 600, and 725 wattsinto 4-ohm loa...

Page 5 - Figure 3: QSC MX 1500a Back Panel (identical to the MX 1000a)

5 III. INPUTS An MXa amplifier features balanced inputs, connectedvia barrier strip terminals or 1/4” (6.3 mm) tip/ring/sleevephone jacks. The tip of the input jack is wired for “nega-tive’ or inverted polarity, while the ring is the non-invertinginput. Thus, if the voltage at the tip is positive wi...

Page 6 - CONTROLS AND DISPLAYS; The LED displays for each channel function as follows:; LED; AC POWER; Figure 5: LED displays further explained.

6 IV. OUTPUTS Four “touch-proof” binding posts—one pair per chan-nel—on the rear panel allow speaker cable connectionsto the amplifier outputs. The special design allows con-nection of large diameter speaker cable while reducingshock hazard due to the high output power of MXaamplifiers. The “hot” te...

Page 7 - TROUBLESHOOTING; PROBLEM: Channel will not come out of muting; If reducing the gain control to; PROBLEM: Hum in the audio; At approximately 55

7 TROUBLESHOOTING PROBLEM: Channel will not come out of muting • If reducing the gain control to ∞ attenuation does not release muting, the channel isdefective or overheated (see “Overheating,”below). • If reducing the gain releases the muting,raise the gain back up slowly while youwatch the “SIG” a...

Page 8 - Green LED

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 1300 4 Ω Load 500 750 1000 1600 2 Ω Load* 350 500 650 1200 4 Ω Load MODEL *typical MX 1000a MX 1500a MX 200...

Page 10 - Set the switch to the “Bridge” position.; CONNECT ONE SPEAKER LOAD ONLY.; Switch on Input Panel

10 PARALLEL, STEREO, OR BRIDGEDOPERATION The Parallel-Stereo-Bridge switch is located on the inputpanel, next to the input jack for channel 1). The most commonly used operating mode for a poweramplifier is “Stereo,” in which the two channels areindependent and separate all the way from input tooutpu...

Page 11 - AC CURRENT CONSUMPTION; Load; MODEL

11 VI. LONG-TERM OUTPUTPOWER In a properly designed sound system, you can usuallyobtain the desired sound level without using the fulloutput power of the amplifier; if the “CLIP” indicators flashonce in a while, that is perfectly normal. If the amplifier is operated at extremely high power levels,it...

Page 12 - HEAT EMISSIONS; PROTECTION CIRCUITS

12 HEAT EMISSIONS Essentially, a power amplifier draws electrical energyfrom the AC mains, converts it to DC, and then convertsit again into an analog of the input signal to send out to theloudspeakers. Any AC power that enters the amplifierthrough the power cord and does not exit through thespeaker...

Page 13 - Product Return Guidelines; Pack the product well for protection during ship-; QSC TECHNICAL SERVICES

13 output until it can be repaired, at which time the fuseshould be replaced also. Temperature sensors on the channel heatsinks and thepower transformers are part of the thermal managementcircuitry. On the MX 1000a, MX 1500a, and MX 2000a,the temperature sensors govern whether the dual-speedfan shou...

Page 14 - QSC OnLine. Download software; 4 hours a day

14 File Library QSControl Hardware SupportQSControl Software Support EX, MXa, VS, USA, and Series One Slot Accessories General Notes File Types GraphicsMechanical drawingsSpecificationsApplication notesField service notesService bulletinsSchematicsPin-outsOwners manual text segmentsEnvironment files...

Page 15 - Factory telephone numbers:

15 X. IMPORTANT ADDRESS ANDTELEPHONE INFORMATION Factory address: QSC Audio Products, Inc.1675 MacArthur BoulevardCosta Mesa, California 92626-1468USA Factory telephone numbers: Main Number (714) 754-6175 Sales Direct Line (714) 957-7100 Sales (800) 854-4079 (toll-free in U.S.A. only) Sales & Ma...

Page 16 - A U D I O

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