CMX300V - Amplificateur QSC AUDIO - Notice d'utilisation et mode d'emploi gratuit

Type de produit	Amplificateur de puissance professionnel
Caractéristiques techniques principales	300W par canal à 4 ohms, 200W par canal à 8 ohms
Alimentation électrique	230V AC, 50/60 Hz
Dimensions approximatives	483 mm x 88 mm x 350 mm
Poids	9,1 kg
Compatibilités	Compatible avec divers systèmes de sonorisation et haut-parleurs
Fonctions principales	Protection contre les surcharges, limiteur de puissance, refroidissement par ventilateur
Entretien et nettoyage	Nettoyage régulier des grilles et des ventilateurs, vérification des connexions
Pièces détachées et réparabilité	Disponibilité de pièces de rechange via le fabricant
Sécurité	Protection contre les courts-circuits, surchauffe et surcharge
Informations générales utiles	Idéal pour les concerts, événements en direct et installations fixes

FOIRE AUX QUESTIONS - CMX300V QSC AUDIO

Comment brancher le QSC AUDIO CMX300V à mon système audio ?

Pour brancher le QSC AUDIO CMX300V, connectez les sorties de votre source audio aux entrées RCA ou XLR du amplificateur. Assurez-vous que le niveau de volume est au minimum avant de procéder à la connexion.

Quelle est la puissance de sortie du QSC AUDIO CMX300V ?

Le QSC AUDIO CMX300V offre une puissance de sortie de 300 watts par canal à 4 ohms.

Le QSC AUDIO CMX300V est-il compatible avec des haut-parleurs de 8 ohms ?

Oui, le QSC AUDIO CMX300V est compatible avec des haut-parleurs de 8 ohms, bien que la puissance de sortie soit inférieure à celle fournie avec des haut-parleurs de 4 ohms.

Comment régler le niveau de gain sur le QSC AUDIO CMX300V ?

Pour régler le niveau de gain, utilisez le potentiomètre de gain situé sur le panneau avant de l'amplificateur. Tournez-le dans le sens des aiguilles d'une montre pour augmenter le gain et dans le sens inverse pour le diminuer.

Que faire si le QSC AUDIO CMX300V s'éteint lors de l'utilisation ?

Si l'amplificateur s'éteint, vérifiez d'abord si le circuit est en surcharge ou s'il y a un court-circuit. Assurez-vous que les haut-parleurs sont correctement connectés et que l'impédance est appropriée.

Le QSC AUDIO CMX300V a-t-il une fonction de protection contre la surchauffe ?

Oui, le QSC AUDIO CMX300V est équipé d'un système de protection contre la surchauffe qui éteint l'amplificateur en cas de température excessive.

Comment nettoyer le QSC AUDIO CMX300V ?

Pour nettoyer le QSC AUDIO CMX300V, utilisez un chiffon doux et sec. Évitez d'utiliser des produits chimiques ou de l'eau qui pourraient endommager les composants électroniques.

Où puis-je trouver le manuel d'utilisation du QSC AUDIO CMX300V ?

Le manuel d'utilisation du QSC AUDIO CMX300V est disponible sur le site officiel de QSC AUDIO dans la section support ou documentation.

MODE D'EMPLOI CMX300V QSC AUDIO

Contractor "Flex-Use" Specific Features

The CMX Series is packed full of professional features that increase performance and flexibility.

• "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 amplifiers and racks cool

The New CMX 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 CMX feature sets are designed for wide-ranging application in facilities such as performance halls, houses of worship, sports clubs, gymnasioums, dance venues, pubs, and FGM/BGM systems. The CMX Series provides unmatched performance, the right power for the job and an affordable price point.

Proven and Reliable Power Plant

CMX 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 our world-class power supplies. The CMX 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 on power level. Efficient class H output sections on the CMX800V and CMX2000V reduce AC current draw and cut down on waste heat.

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

CMX amplifiers also feature 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 the event of an output circuit failure.

Superior Performance

The CMX 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 CMX2000V). Unlike other designs, CMX output devices are directly mounted to the heat sink for optimum thermal coupling and cooling.

The CMX Series is available in four models. Three 2-rackspace models range in power from 300 to 800 watts per channel at 4 ohms. One 3-rackspace model provides 2500 watts per channel at 2 ohms. All four models feature a compact chassis less than 16" deep.

The V in the model name designates the ability to directly drive 70-volt and/or 100-volt distributed loudspeakers. The CMX300V and CMX500V must be configured for bridged-mono operation in order to directly drive high-impedance systems while the CMX800V and 2000V 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.

CMX Power Amplifiers

2RU Models	8Ω	Watts per channel		Bridged 4Ω**
		4Ω*	2Ω**
CMX300V	200	300	430	830
CMX500V	300	500	700	1400
CMX800V	500	800	1200	2400
3RU Model	8Ω	Watts per channel		Bridged 4Ω**
		4Ω**	2Ω**
CMX2000V	1100	2000	2500	5000

1 kHz, 0.1% THD 1 kHz, 0.5% THD *1 kHz, 1% THD

	CMX300V	CMX500V	CMX800V	CMX2000V
Stereo Mode (both channels driven)	Continuous average output power per channel
8Ω / FTC 20 Hz - 20 kHz / 0.1% THD	185 W	260 W	450 W	1050 W
8Ω / EIA 1 kHz / 0.1% THD	200 W	300 W	500 W	1100 W
4Ω / FTC 20 Hz - 20 kHz / 0.1% THD	280 W	400 W	650 W	1600 W
4Ω / EIA 1 kHz / 0.5% THD	300 W	500 W	800 W	2000 W (1% THD)
2Ω / EIA 1 kHz / 1% THD	430 W	700 W	1200 W	2500 W
70V Direct Drive / EIA 1 kHz / 1% THD	-	-	400 W	2500 W
100V Direct Drive / EIA 1 kHz / 1% THD	-	-	-	1000 W
Bridge Mono Mode
8Ω / FTC 20 Hz - 20 kHz / 0.1% THD	530 W	800 W	1300 W	3200 W
8Ω / EIA 1 kHz / 0.1% THD	600 W	900 W	1500 W	3600 W
4Ω / EIA 1 kHz / 1% THD	830 W	1400 W	2400 W	5000 W
70V Direct Drive / EIA 1 kHz / 1% THD	600 W	1200 W	2000 W	5000 W
100V Direct Drive / EIA 1 kHz / 1% THD	-	600 W	2300 W	3600 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	31.6x (30 dB)	40x (32 dB)	46x (33 dB)	64x (36 dB)
Output Circuitry	Class AB	Class AB	2-tier Class H	3-tier Class H
Power Requirements
Typical, 1/8 power pink noise at 4Ω, 120 VAC	4.4 A	5.4 A	6.3 A	13.9 A
Typical, 1/8 power pink noise at 4Ω, 230 VAC	2.2 A	2.7 A	3.2 A	7 A
Severe, 1/3 power pink noise at 4Ω, 120 VAC	6.6 A	9.6 A	15.6 A	26.9 A
Severe, 1/3 power pink noise at 4Ω, 230 VAC	3.3 A	4.8 A	7.8 A	13.5 A
Distortion (SMPTE-M)	< 0.02%	< 0.01%	< 0.01%	< 0.01%
Distortion (typical)
20 Hz - 20 kHz: 10 dB below rated power	< 0.03% THD / 4Ω and 8Ω
1.0 kHz and below: full-rated power	< 0.03% THD / 4Ω and 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 dB)
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 2 positive Output: Detachable terminal block and Neutrik™ Speakon™
Controls	Front: AC switch, Ch. 1 & 2 gain knobs Rear: 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 (CMX300V and CMX500V), triac crowbar (CMX800V and CMX2000V on each channel)
Power Requirements	120 and 230 VAC, 50 - 60 Hz
Dimensions (HWD)
2 RU models	3.5" (8.9 cm) 2 rack spaces x 19" (48.3 cm) rack mounting x 15.9" (40 cm) deep to rear support ears
3 RU model (CMX2000V)	5.25" (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)

Specifications subject to change without notice.