MX Series

(Discontinued)

2RU models: MX 700  |  MX 1500a
3RU models: MX 2000a  |  MX 3000a

QSC's award-winning MX/MXa Series amplifiers combine ultra-clean audio performance and unsurpassed reliability while delivering maximum power under the most demanding conditions. The MXas achieve superior performance with high-efficiency stepped linear output circuits,ensuring solid two-ohm operation, night after night. They're at home on tour or in an installation rack; in a main or monitor system; driving horns or pumping subwoofers. MX amplifiers are trusted by leading touring companies and venues around the world.

Stepped-linear output technology on MXa models reduce normal system cooling requirements and AC current draw by greater than 40%. The MX 2000a's and 3000a's dual monaural construction boosts reliability by providing separate power supplies for each channel. MXa rear panels feature our exclusive Level 1 Open Input Architecture, which allows the addition of input transformers, crossovers, power limiters, precision attenuators, and other signal processing accessories. An extensive set of protection features assure stable operation and reliability, even under the harshest conditions.

MX Series Power Amplifiers

Model	Stereo watts per channel			Bridged watts
	8 ohms*	4 ohms*	2 ohms**	8 ohms*	4 ohms**
MX 700	150	225	350	450	700
MX 1500a	350	500	750	1000	1500
MX 2000a	450	650	1000	1300	2000
MX 3000a	800	1200	1600	2400	3200

* 20 Hz - 20 kHz, 0.1% THD, both channels driven
** 1 kHz, 1% THD, both channels driven


FEATURES

• High-efficiency stepped linear outputs reduce amplifier cooling requirements and AC current draw by greater than 40% *
• Independent power supplies on each channel for greater reliability (dual monaural on MX 2000a & MX 3000a,split secondary on MX 700 & MX 1500a)
• Power transistors direct-mounted metal-to-metal to heatsink for superior thermal performance
• Level 1 Open Input Architecture for cost and space-saving signal processing accessories*
• Independent DC,subsonic,ultrasonic ,and thermal overload protection on each channel automatically protect amplifier and speakers
• Patented Output Averaging short circuit protection
• Automatic two-speed fan matches cooling capacity to thermal requirements. Rear-to-front air flow prevents rack overheating.
• 1/4" TRS and barrier strip balanced inputs for low noise
• Comprehensive LED array monitors operation and performance
• "Touch-proof" binding post output connectors
• THX approved for cinema applications *

  MX SERIES AMPLIFIERS

  • MX 700
  • MX 1500a
  • MX 2000a
  • MX 3000a

  DOCUMENTS

  MX 700 Specifications (PDF 36K) 
  MX 700 User Manual (PDF 1.8MB) 
  MXa Specifications (PDF 276K)
  MXa Users Manual (PDF 107K)
  MXa Service Manual 
  
  

  HI-RES IMAGES

  Front
  Rear
  Series
  
  

  SCHEMATICS

  MX 700 (ZIP 100K)
  MX 1500a (ZIP 871K)
  MX 2000a (ZIP 882K)
  MX 3000a (ZIP 1.2MB) 
  
  

  ACCESSORIES

  Handles: 2RU | 3RU 
  Rear Rack Ears: 3" Support Ears | 7" Support Ears
  Transformers: 70-Volt Output: OT-600 
  Slot Accessories 
  
  

  RELATED PRODUCTS

  RMX Series Amplifiers 
  Early MX Series:
    MX 1000a (PDF 42K) 
    MX 1500 (PDF 602K) 
    MX 2000 (PDF 675) 
  
  
  
  
  From top: MX 700, MX 1500a, MX 2000a, MX 3000a 
  
  
  

 

SPECIFICATIONS	MX 700	MXa 1500	MX 2000a	MX 3000a
	STEREO MODE (Both Channels Driven)
8 ohms   FTC 20 Hz - 20 kHz, 0.1% THD   EIA 1 kHz, 1% THD	150 W 170 W	350 W 400 W	450 W 475 W	800 W 825 W
4 ohms   FTC 20 Hz - 20 kHz, 0.1% THD   EIA 1 kHz, 1% THD	225 W 270 W	500 W 600 W	650 W 725 W	1200 W 1250 W
2 ohms    EIA 1 kHz, 1% THD	350 W	750 W	1000 W	1600 W
	BRIDGE MONO MODE
8 ohms    FTC 20 Hz - 20 kHz, 0.1% THD	450 W	1000 W	300 W	2400 W
4 ohms     EIA 1 kHz, 1% THD	700 W	1500 W	2000 W	3200 W
Frequency Response	±0.5 dB	±0.15 dB	±0.15 dB	±0.15 dB
Input Sensitivity @ 8 ohms	0.96 Vrms	1.05 Vrms	1.07 Vrms	1.0 Vrms
Voltage Gain	35x (31 dB)	50x (34 dB)	56x (35 dB)	80x (38 dB)
Output circuit type	Class AB	2-step Class H	2-step Class H	3-step Class H
Cooling	2-speed fan	2-speed fan	2-speed fan	Variable fan
Normal operation a 4 ohms per ch (120VAC)	< 3.7A	< 10.5A	< 12A	< 12A
DIstortion (SMPTE-IM)	Less than 0.05%
Damping Factor	Greater than 200
Dynamic Headroom	3 dB at 4 ohms
Noise	100 dB below rated output
Input Impedance	10k ohms unbalanced, 20k ohms balanced
Connectors, each channel	Input: 1/4" TRS and Barrier strip Output: touch-proof binding posts
Controls	Front: AC switch, Ch. 1 and Ch. 2 gain knobs Rear: Parallel/Stereo/Bridge switch *
Indicators	Power-On: Green LED Signal: Yellow LED (1 per channel)* Clip: Red LED (1 per channel) Protect: Red LED (1 per channel) **
Amplifier Protection	Full short circuit†, open circuit, ultrasonic and RF protection. Stable into reactive or mismatched loads
Load Protection	MX 700: AC coupled output. 2-second turn on and instant off muting. All others: On/off muting, DC fault load grounding relay with internal fault fuses.
Power Requirements	100, 120, 230 VAC, 50-60 Hz
Dimensions (WxHxD)	19" x 3.5" x 12" (2 RU) (48.3 cm x 8.9 cm x 30.5 cm)	19" x 3.5" x 17.9" (2 RU) (48.3 cm x 8.9 cm x 45.5 cm)	19" x 5.25" x 17.9" (3 RU) (48.3 cm x 13.3 cm x 45.5 cm)	19" x 5.25" x 17.9" (3 RU) (48.3 cm x 13.3 cm x 45.5 cm)
Weight	25 lbs (11.3 kg) net	42 lbs (19.1 kg) net	54 lbs (24.4 kg) net	69 lbs (31.2 kg) net

* except on MX 700 
** MX 700 uses single clip/protect LED 
† Output Averaging™ short circuit protection (US patent 4,321,554) 

All Specification Subject to Change Without Notice.

Output Averaging is a trademark of QSC Audio Products 

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