เพาเวอร์แอมป์ QSC CMX300Va Power Amplifier
เครื่องขยายเสียงรบกวน QSC CMX300Va มีกำลังขับ 200 วัตต์ x 2 ที่ 8 โอหม์, 70 V mono 600 วัตต์, class AB, DIP switches for easy selection of stereo, parallel, or bridged mode operation, Tamper-proof security cover for gain controls
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฿22,000.00 ฿17,600.00
Description
QSC CMX300Va Professional Power Amplifier
เครื่องขยายเสียงรบกวน QSC CMX300Va มีกำลังขับ 200 วัตต์ x 2 ที่ 8 โอหม์, 70 V mono 600 วัตต์, class AB, DIP switches for easy selection of stereo, parallel, or bridged mode operation, Tamper-proof security cover for gain controls
The CMX300Va 430W Professional Power Amplifier from QSC is a 2RU rugged unit designed to meet the needs of system integrators. This amplifier is used in facilities such as performance halls, houses of worship, sports clubs, gymnasiums, dance venues, pubs, and FGM/BGM systems.
The amplifier uses a powerful, high-current toroidal transformer with filtering to ensure generous energy reserves. This allows the amplifier to effortlessly handle high-level transients, even when driving rigorous 2Ω speaker loads.
The amplifier output sections feature rugged class AB architecture. Automatic current limiting protects the amplifier from damage until the short is corrected. It also features DC protection systems to prevent loudspeaker damage in the unlikely event of an output transistor failure. DC voltage from the power supply is never passed directly to your speakers, even in case of an output circuit breakdown.
This CMXa amplifier delivers 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 RU chassis, less than 16″ deep. Unlike other designs, CMXa output devices are directly mounted to the heat sink for optimum thermal coupling and cooling.
The unit has the ability to directly drive 70 and/or 100V distributed loudspeakers. The CMX 300Va must be configured for bridged-mono operation in order to directly drive high-impedance systems. For installations requiring a transformer isolated output, the CMX has optional accessories to cover your needs.
Features:
- Flex-use loading options can drive low-impedance loads down to 2Ω and even 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 chassis less than 16″ deep
- 1 dB recessed, detented gain control provides 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 prevent amplifiers and racks from overheating
- Used in facilities such as performance halls, houses of worship, sports clubs, gymnasiums, dance venues, pubs, and FGM/BGM systems
Specifications
QSC CMX300Va Power Amplifier
| 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) | ||||||
| Cooling | 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™ | ||||||
| Controls | Front: AC switch, Ch. 1 & 2 gain knobsRear: 10-position DIP switch | ||||||
| Indicators | 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) | |||
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