Crown XTI4000 - Amplificateur professionnel 2 x 1200W at 4 ohms
[XTI4000] Avis/Critiques Les amplificateurs de la Série XTI sont dédiés à la sonorisation professionnelle mobile de forte puissance.
Sa face avant intègre un écran LCD permettant la sélection de programmes d’usine de configuration d’enceintes et de réglage des différents paramètres : crossover, délai, limiteur.
SECTION DSP
• Correcteur 4 bandes paragraphiques ± 12 dB, correcteur grave et aigu
• Filtres Passe-Bas et Passe-Haut par canal, butterworth 6/12/18/24 dB par octave. Filtres Graves/Aigus, un par canal
• Délai total de 5 ms
• Synthétiseur de Sub-harmoniques
• Limiteur de Sortie
• 10 mémoires utilisateur
Caractéristiques principales :
• Programmes d’usine pour enceintes : crossover, EQ, limiteur et délai
• Tout modèle en rack 2U et poids de 7,7 kg
• Entrées/Sorties symétriques sur XLR
• Sorties sur borniers protégés et Speakon®
• Alimentation à découpage
• Ecran LCD de contrôle
• Connecteur USB HiQnet™
• Garantie fabricant 3 ans
HiQnet™ est le protocole standardisé de commandes développé par le groupe Harmon Pro pour permettre la commande de systèmes audio professionnels. Ce protocole est indépendant de la méthode de connexion (réseau, série ou USB) et le logiciel HiQnet System Architect™ permet le contrôle de tout appareil et systèmes audio compatibles HiQnet. Les amplificateurs XTI sont compatibles HiQnet™ via un connecteur USB.
| Référence |
Puissance |
Rapport Signal/Bruit pondéré A
1kHz/8Ohms |
Dimensions (L x H x P) en cm |
Poids |
| sous 2 Ohms |
sous 4 Ohms |
sous 8 Ohms |
4 Ohms (bridgé) |
4 Ohms (bridgé) |
| XTI4000 |
2 x 1600 W* |
1200 W |
650 W |
3200 W* |
2400 W |
100 dB |
48,3 x 8,9 x 31,1 |
8,4 kg |
Puissance maximum en Watts au taux de distorsion harmonique totale indiqué : 1 kHz, 0;5% DHT. *1 kHz, 1% DHT.
Puissance maximum en Watts au taux de distorsion harmonique totale indiqué : 1 kHz, 0;5% DHT. *1 kHz, 1% DHT.
Puissance maximum en Watts au taux de distorsion harmonique totale indiqué : 1 kHz, 0;5% DHT. *1 kHz, 1% DHT.
Specifications :
Voltage Gain at 1kHz, 8 ohm rated output:
XTi 1000: 30.5 dB
XTi 2000: 32.9 dB
XTi 4000: 34.2 dB
Frequency Response: +0/-1 dB from 20 Hz to 20 kHz at 1 watt into 4 ohms.
Load Impedance: Safe with all types of loads. Rated for 2 to 8 ohms in Stereo mode, 4 to 16 ohms in Bridge-Mono mode.
Sensitivity: 1.4V
Signal to Noise Ratio (below rated 1 kHz power at 8 ohms):
100 dB (A weighted).
Damping Factor: Better than 500 from 20 Hz to 400 Hz.
Crosstalk: > 70 dB below rated power, 20 Hz to 1 kHz.
Input Stage: Input is electronically balanced and employs precision 1% resistors.
Input Impedance (nominal): 20 k ohms, balanced;10 k ohms, unbalanced.
Maximum Input Signal: +22 dBu typical.
AC Line Voltage and Frequency Configurations Available: 100V, 120V, 220-240V
50/60 Hz.
AC Line Current:
XTi 1000: 6.5A
XTi 2000: 6.9A
XTi 4000: 8.0A
At Idle: Draws no more than 90 watts.
Operating Temperature: 0° C to 40° C at 95% relative humidity (non-condensing).
DSP Section
EQ: 4-band paragraphic per channel, boost/cut ±12 dB. Also adjustable high and low shelving filters.
Filters: Highpass and lowpass per channel. Butterworth 6/12/18/24 dB per octave. High and low shelving filters, one per channel.
Delay: For signal alignment of driver; 50 mS total delay.
Subharmonic Synthesizer: Adds low-frequency content.
Output Limiter: Prevents clipping.
Presets: 10 user speaker presets.
Front Panel Controls and Indicators
Level: Detented rotary level control, one per channel.
Power Switch: On/off switch applies AC power to the amplifier.
Sel/Prev/Next Buttons: Three buttons near the LCD screen are used to access menu items.
LCD Screen: Backlit liquid crystal display shows speaker presets.
Signal Indicator: Green LED, one per channel, flashes when a very low-level signal is present at input. May be used for troubleshooting cable runs.
–10 Indicator: Green LED flashes when output signal exceeds –10 dB below clip.
–20 Indicator: Green LED flashes when output signal level exceeds –20 dB below clip.
Ready Indicator: Green LED, one per channel, illuminates when the amplifier is ready to produce audio.
Clip Indicator: Red LED, one per channel, turns on at the threshold of audible distortion.
Temp/Fault Indicator: Red LED, one per channel, illuminates under Fault or excessive temperature conditions.
Power Indicator: Blue LED illuminates when the amplifier has been turned on and has power.
Rear Panel Controls and Connectors
AC Line Connector: NEMA 5-15P (15A).
Input Connector: XLR, one per channel.
Link/Out Connector: Loop-thru signal from input connector for linking to another amplifier, one per channel.
Output Connectors: Two Neutrik® Speakon® NL4MP (mates with NL4FC) output connectors. Channel-1 Speakon® is wired with Ch. 1 and Ch. 2 outputs for use with optional single 4-conductor cable. Two binding post outputs (in parallel with Speakon® connectors).
HiQnet USB Connector: Type B, connects to a HiQnet network.
Protection
XTi-Series amplifiers are protected against shorted, open or mismatched loads; overloaded power supplies; excessive temperature; chain destruction phenomena; excessive output current, input overload damage; and high-frequency blowups. They also protect loudspeakers from input/output DC, large or dangerous DC offsets and turn-on/turn-off transients.
Construction
Chassis: Steel.
Cooling: Proportional speed fan with front-to-rear airflow.
Dimensions: EIA Standard 19-in. rack mount width (EIA RS-310-B), 3.5 in. (8.9 cm) high and 12.25 in. (31.11 cm) deep behind mounting surface.
Net Weight: 18.5 lb (8.4 kg)
Shipping Weight: 21.5 lb (9.8 kg)
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