QSC MX 1500 User's Manual
Contents
1. MX S E RL Ee S The QSC MX 1500 is designed for maximum power into today s high power high performance speaker systems These loads are often designed at 4 ohms which means that the impedance may dip well below that at some frequencies The MX 1500 delivers tremendous power in only two rack spaces to assure the highest level of performance underthe most demanding conditions The MX 1500 uses fan cooling and high efficiency output circuitry to minimize operating temperatures Dual monaural construction provides completely separate channels and power supplies for fail safe reliability and freedom from crosstalk and interference QSC is a pioneer in premium quality high power low profile ampli fiers with thousands of units installed in touring systems and concert halls worldwide The MX 1500 puts this proven technology to work in a more economical package The result is proven reliability at a new level of value FEATURES Low Profile 2 Rack Spaces Wi Direct Metal Mounted Power m Fan Cooled Transistors I Dual Mono Configuration B Recessed Front Panel Controls W High Efficiency Output W Auto Back Upin Bridged Mode W Modular Construction M Three Year Warranty SG MX 1500 SPECIFICATIONS OUTPUT POWER pr chanel ots 2020 Ke 0 Y THO 390 ohms ri THO 360 3 20 20 KHE 0 9s THD 500 EKHE Re THO S70 2onmetkie 1 THO 750 108 BRIDGED MONO OPERATION 16 ohm 2020 KHz 0 Y THD 660 Bohms 2020 KHz 0 THD 12. 000 DISTORTION i ors FREQUENCY RESPONSE 20 20 Kr DAMPING FACTOR Grote van 200 SLEW RATE 20V per microsecond DYNAMIC HEADROOM 3 6 c 1000 wats NOISE 100 48 2020 KH SENSITIVITY 1V AMS tr tad powo 8 os INPUT IMPEDANCE 10K urowanced 20 batcen CONTROLS Racesso toniaoueg Gam coriis AC ore INDICATORS each char eaGreen LED o ProectPower On ed LED Cip nc CONNECTORS puts neh RIS ng p eee and arme bar sp wred par Speakers Say bring post on VA nen cens coocina operating temperatures Unique crcut confquaton ces amp 4 sage reduc oput devices x reduced ermal res dra shore pesi AMPLIFIER PROTECTION Shale to reacts ard marratcred loads out roca hom overload A protection completely independent on each chanel tout Averaging short exc proecton US Pet 4321564 LOAD PROTECTION dvi ua Channel Load Grounding ouput reis provide OC tt an sus uda protection win scan tum delay and tast tuac osea power mang AC Dp suppression capacits across Varaformer pemares OUTPUT CIRCUIT TYPE Fuly complenetany two eel ng ecancy asson OUTPUT DEVICES Toa 24 POWER SUPPLY Dua power supple and AC circuit brehers Common AC cord and such POWER REQUIREMENTS 100 120 220 ov 240v 5060 He POWER CONSUMPTION 12 AMPS a 120 vats DIMENSIONS 3 5 lal 2 rack spaces 19 we 179 deep WEIGHT 47 sro 52 s sopena ARCHITECT S AND ENGINEER S SPECIFICATIONS The power ampi
3. alanced and 10k ohms unbalanced Noise levels shall be at least 100 dB below rated power at full gain IHF damping factor shall exceed 200 The amplifier shall be fan cooled Air flow shall be from back o front Each channel shall have the following controls functions and indicators Front mounted gain controls Green Red LED for Power OnProtect Red LED clipping indicator for output clipping greater than 0 105 Balanced Unbalanced input jacks of the 1 4 inch and barrier strip screw terminal types Speaker connectors shall be five way binding posts on 3 4 inch centers The amplifier chassis shall feature a perma ently attached AC cord The chassis shall occupy two rack spaces 857 Chassis depth shall be 17 9 Weight shall be 47 ibs The power amplifier shall be the QSC Audio Products Model MX 1500 SC 1926 Placentia Avenue Costa Mesa CA 92727 714 645 2540
4. fier shall contain all solid state circuitry using complementary silicon semiconductors It shall be capable of operating trom 100 120 220 or 240V 50 60 Hz AC mains The amplifier shall contain two independent channels with sepa rate AC breakers power transformers and protective systems Each channel shall have independent protective circuitry against open cir Cut short circuit or mismatched loads independent load protection Circuits for urn ortum off transients including momentary AC dropouts and DC faults within or preceding the amplifier All protective circuits except AC circuit breaker shall be selt resetting The remaining channel Shall continue to operate in stereo or bridged mono mode The two channeis share a common AC power cord and AC switch Each channel of the amplifier shall be capable of meeting the following performance critena with both channels driven simultane ously Output power into 8 ohms 330 watts 20 20 KHz less than 0 1 THO Output power into 4 ohms 500 watts 20 20 KHz less than 0 1 THO Output power into 2 ohms 750 watts 1KHz 1 dB less than 1 THD Frequency response shall be 20 20 KHz with less than 0 19 deviation The voltage gain shall be 34 dB at full gain The input sensi tivity for rated 8 ohm power shall be 0 98 VAM Balanced bridging input Circuitry shall be standard and the ampifier shall meet all performance Criteria in the balanced or unbalanced mode Input impedance shall be 20k ohms b
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