QSC Audio MX 1500a, MX2000a, MX 1000a, MX3000a owner manual Open Input Architecture Level, Weight

MX 1000a MX 1500a MX 2000a MX 3000a

CONNECTORS (each channel)

COOLING

AMPLIFIER PROTECTION

LOAD PROTECTION

OUTPUT CIRCUIT TYPE

POWER REQUIREMENTS

POWER CONSUMPTION

Normal operation: 1/8 power @ 4Ω per channel

Maximum: full power @ 2Ω per channel Divide current by 2 for 220-240 VAC operation

Normal Operation @ 120 VAC

Maximum @ 120 VAC

DIMENSIONS Faceplate Width Chassis Depth

Faceplate Height (2 rack spaces) Faceplate Height (3 rack spaces)

WEIGHT

Shipping, Lbs

Net, Lbs

Input:	Barrier strip and 1/4” RTS phone jack
Output:	“Touch-Proof” binding posts

MX 1000a, MX 1500a, MX 2000a: 2-speed fan with back-to-front air flow

MX 3000a: Continuously variable speed fan, with back-to-front air flow

Output Averaging™ short-circuit protection, open circuit, ultrasonic, RF, thermal muting (thermal limiting also on MX 3000a). Stable into reactive or mismatched loads.

Turn-on/turn-off muting, clip limiting (MX 3000a only), DC-fault load grounding relay with internal fault fuses.

MX 1000a, MX 1500a, MX 2000a: Complementary linear stage with 2-step high-efficiency circuit

MX 3000a: Complementary linear stage 3-step high-efficiency circuit

100, 120, 220-240 VAC, 50/60 Hz

4A	5.5A	7.5A	<12A
22A	29A	38A	58A
Standard 19" (48.3 cm) Rack Mounting
17.9” (45.5 cm) deep (to support rear ears)
3.5” (8.9 cm)	3.5” (8.9 cm)
		5.25” (13.3 cm)	5.25” (13.3 cm)
49 lbs/22.2 kg	49 lbs/22.2 kg	62 lbs/28 kg	74 lbs/33.8 kg
42 lbs/19 kg	42 lbs/19 kg	54 lbs/24.5 kg	69 lbs/31 kg

OPEN INPUT ARCHITECTURE™ LEVEL I

On the rear of an MXa or EX amplifier are an upper and a lower input panel; both are easily removable for future upgrades. This is the concept of Open Input Architecture, and the opening in which the panels mount is called the “slot”. As installed at the factory, the lower is the MXa or EX standard input panel and the upper one is a blank. A ribbon cable connects the “slot” panels to the rest of the amplifier. It carries input signals, speaker output monitor signals, muting status, and clip activity; these are for supporting future accessories and remote control sys- tems. Although the physical dimensions of the MXa and EX panels are the same, their internal cabling is different and the MXa platform does not support all the EX functions. The MXa Open Input Architecture slot thus is designated as “Level I” and the EX as “Level II.”

The standard input panel shipped with each MXa Series amplifier has balanced 1/4” (6.3 mm) RTS phone jacks and barrier strip inputs and the Parallel-Stereo-Bridge switch. The panel’s circuit board has solder footprints for passive roll-off circuit components, input isolation trans- formers, and other special customizations.

The MX-1 Input Expander panel may be installed in the upper panel position. It features XLR inputs and addi- tional 1/4” RTS inputs. Installation instructions are in- cluded with the expansion kit.

Other accessories include a stereo precision attenuator (for the lower panel position) and a cinema crossover (for the upper panel position). More are in development.

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