top of page
ยี่ห้อ : QSC
รุ่น : QSC CMX800Va
ราคา: 36,900 บาท
พิเศษ : 33,290 บาท
หจก.อินเตอร์สเปเชียล โปรดักส์
หจก.อินเตอร์สเปเชียล โปรดักส์

หจก.อินเตอร์สเปเชียล โปรดักส์

press to zoom
เครื่องขยายเสียง Contractor power amplifier, 2 channels, 300 watts/ch at 8Ω, 500 watts/ch at 4Ω, 1200 Watts mono at 70/100V direct-drive.

เครื่องขยายเสียง Contractor power amplifier, 2 channels, 500 watts/ch at 8Ω, 800 watts/ch at 4Ω, 2000 Watts mono at 70V/100V.

รายละเอียดทั้งหมด :


QSC CMX800Va เครื่องขยายเสียง Contractor power amplifier, 2 channels, 500 watts/ch at 8Ω, 800 watts/ch at 4Ω, 2000 Watts mono at 70V/100V.

The CMX800VA is a 800W @ 4 Ohms stereo power amplifier.

The CMXa series is an economical and rugged power amplifier designed to meet the needs of system integrators. It is based upon the proven, rock-solid, reliable performance found in the award winning RMX Series. The CMXa feature sets are designed for wide-ranging application in facilities such as performance halls, houses of worship, sports clubs, gymnasiums, dance venues, pubs, and FGM/BGM systems. The CMXa Series provides unmatched performance, the right power for the job and an affordable price point.

Proven and Reliable Power Plant
CMXa amplifiers incorporate everything QSC has learned in more than forty years of striving to deliver worry-free operations without failures. The design of these amplifiers starts with QSC's world-class power supplies. The CMXa uses a powerful, high-current toroidal transformer and filtering to ensure generous energy reserves. This allows the amplifiers to effortlessly handle high-level transients, even when driving abusive 2 ohm speaker loads.

The amplifier output sections feature rugged class AB and class H architecture depending onpower level. Efficient class H output sections on the CMX 800Va reduce AC current draw and cut down on waste heat.

All CMXa amplifiers are protected from damage from shorted outputs. Automatic current limiting protects the amplifier from damage until the short is corrected.

CMXa amplifiers also feature DC protection systems to prevent loudspeaker damage inthe unlikely event of an output transistor failure. DC voltage from the power supply is never passed directly to your speakers, even in the event of an output circuit failure.

Superior Performance
The CMXa amplifiers deliver true and accurate studio-quality sound. A full complementary output circuit using high-grade linear output devices generates accurate, flat-frequency response with low distortion. SMT (Surface Mount Technology) triples small-signal component density, enabling high power output in a 2 rack unit chassis (3 RU for the CMX 2000Va). Unlike other designs, CMXa output devices are directly mounted to the heat sink for optimum thermal coupling and cooling.

The V in the model name designates the ability to directly drive 70-volt and/or 100-volt distributed loudspeakers. The CMX800Va may be used in either stereo or mono mode.

For installations requiring a transformer isolated output, the CMX has optional accessories to cover your needs.


  • “Flex-Use” loading options allow you to drive low-impedance loads down to 2 ohms and certain models to drive 70 and 100V distributed loudspeaker systems

  • “Flex-Use” Input connectivity choices including actively balanced barrier strip, XLR, or 1/4" TRS

  • “Flex-Use” Output connectivity choices include NL4 Speakon™ and detachable terminal block

  • Rack mountable with chassis less than 16" or 40.6 mm deep

  • 1 dB recessed, detented gain controls for fast, accurate and repeatable settings

  • Tamper-proof security cover for gain controls

  • Recessed rear DIP switches for easy selection of stereo, parallel, or bridged mode operation, and the additional choice of enabling/disabling low frequency filter protection

  • Low-noise variable-speed fans with rear-to-front airflow keep amplifiersand racks cool


CM X300Va

CMX 500Va

CMX 800Va

CMX 2000Va

Stereo Mode (both channels driven)8Ω/ FTC 20 Hz – 20 kHz / 0.1% THD8Ω/ EIA 1 kHz / 0.1% THD4Ω/ FTC 20 Hz – 20 kHz / 0.1% THD4Ω/ EIA 1 kHz / 0.5% THD2Ω/ EIA 1 kHz / 1% THD70V Direct Drive / EIA 1 kHz / 1% THD100V Direct Drive / EIA 1 kHz / 1% THD

185 W200 W280 W300 W430 W – –

260 W300 W400 W500 W700 W – –

450 W500 W650 W800 W1200 W400 W –

1050 W1100 W1600 W2000 W (1% THD)2500 W2500 W1000 W

Bridge Mono Mode8Ω/ FTC 20 Hz – 20 kHz / 0.1% THD8Ω/ EIA 1 kHz / 0.1% THD4Ω/ EIA 1 kHz / 1% THD70V Direct Drive / EIA 1 kHz / 1% THD100V Direct Drive / EIA 1 kHz / 1% THD

530 W600 W830 W600 W –

800 W900 W1400 W1200 W600 W

1300 W1500 W2400 W2000 W2300 W

3200 W3600 W5000W5000 W3600 W

Signal to Noise (20 Hz – 20 kHz, 8Ω)

> -100 dB

> - 100 dB

> - 100 dB

> - 100 dB

Input Sensitivity at 8Ω

1.15 V (+3.4 dBu)

1.14 V (+3.4 dBu)

1.23 V (+4.0 dBu)

1.42 V (+5.3 dBu)

Voltage Gain at 8Ω

31.6 x (30 dB)

40 x (32 dB)

46 x (33 dB)

64 x (36 dB)

Output Circuitry

Class AB

Class AB

2-tier Class H

3-tier Class H

PowerRequirementsTypical, 1/8 power pink noise at 4Ω, 120VACTypical, 1/8 power pink noise at 4Ω, 230 VACSevere, 1/3 power pink noise at 4Ω, 120VACSevere, 1/3 power pink noise at 4ΩΩ, 230 VAC

4.4 A2.2 A6.6 A3.3 A

5.4 A2.7 A9.6 A4.8 A

6.3 A3.2 A15.6 A7.8 A

13.9 A7 A26.9 A13.5 A

Distortion (SMPTE-M)

< 0.02%

< 0.01%

< 0.01%

< 0.01%

Distortion (typical)20 Hz – 20 kHz: 10 dB below rated power1.0 kHz and below: full-rated power

< 0.03% THD / 4Ωand 8Ω< 0.03% THD / 4Ωand 8Ω

Frequency Response

20 Hz – 20 kHz: ±1 dB -3 dB points: 5 Hz – 50 kHz

Damping Factor (1 kHz and below)

> 300 at 8Ω

Input Impedance

10k ohms unbalanced, 20k ohms balanced

Input Clipping

10 Vrms (+22 dBu)


Continuously variable-speed fan, rear-to-front air flow

Connectors (each channel)

Input: Active balanced; barrier strip, XLR and ¼" (6.3 mm) – TRS tip and XLR pin 2positiveOutput: Detachable terminal block and Neutrik™ Speakon™


Front: AC switch, Ch. 1 & 2 gain knobsRear: 10-position DIP switch


Power-on: Green LED / Signal: Green LED (1 per channel) / Clip: Red LED (1 per channel)

Amplifier Protection

Stable into reactive or mismatched loads

Load Protection

On/off muting, AC coupling (CMX 300Va and CMX 500Va), triac crowbar (CMX 800Va and CMX 2000Va on each channel)

Power Requirements

120 and 230 VAC, 50 – 60 Hz

Dimensions (HWD)2 RU models3 RU model (CMX 2000Va)

3.5" (8.9 cm) 2 rack spaces x 19" (48.3 cm) rack mounting x 15.9" (40 cm) deep to rear support ears5.25" (13.3 cm) 3 rack spaces x 19" (48.3 cm) rack mounting x 15.9" (40 cm) deep to rear support ears

Weight - Net

35 lb (15.9 kg)

40 lb (18.2 kg)

44.5 lb (20.2 kg)

75 lb (33.1 kg)

Weight - Shipping

41 lb (18.6 kg)

46 lb (20.9 kg)

50.5 lb (23 kg)

87 lb (37.2 kg)

bottom of page