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Online Catalogue |  Audio  >  Cloud Amplifiers  >  Cloud VTX 4240 960W Four Channel Power Amplifier

Cloud VTX 4240 960W Four Channel Power Amplifier Cloud VTX 4240 960W Four Channel Power Amplifier  
Ref: JP8087

Price Each 791.81 (950.17 Including VAT at 20%)


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Cloud VTX 4240 960W Four Channel Power Amplifier, The Cloud VTX 4240 is intended for commercial and industrial public address and sound reinforcement applications where unquestionable long-term reliability is the primary consideration.

The Cloud VTX-4240 is designed to deliver it's full rated power into loads down to 4 ohms for long periods of time. The circuit design includes clip limiting and switch-on delay, together with DC, thermal, short-circuit and reactive load protections. All models are built in a very solid steel 2U chassis, and employ variablespeed forced-air cooling.

The Cloud VTX4240 features pairs of channels which may be operated in Bridge Mode; rear panel switches are provided to enable this. Bridge Mode operation allows power outputs of double the normal rating to be delivered to a load of 8 ohms (minimum).

In addition to the power switch, the front panel is fitted with a set of four LEDs for each channel, confirming power status, signal presence, peak level and activation of amplifier protection circuitry. Rear panel controls are provided for individual channel gain trims, input routing (to configure the amplifiers for mono, dual stereo or four channel operation), Ch1/2 and Ch3/4 bridge mode, and per-channel high pass filters. The inputs are electronically balanced.

Standard options are the Cloud RL-1 remote volume control plates and Bose EQ cards, either or both of which may be fitted to any or all channels. A further option is the VTX-WM1 web monitor card, which permits continuous external surveillance monitoring of the amplifiers performance on any computer via a standard Ethernet connection. See VTX-WM1 datasheet for full details.

Features

  • High power multichannel amplifiers for install-and-forget applications
  • 4 x 240 W into 4 ohms
  • Extensive protection against short-circuit and reactive loads, clipping, DC and overheating
  • Chs1 & 2 and/or 3 & 4 may be operated in Bridge Mode
  • Per-channel, front-panel LEDs for power status, signal presence, peak level and protection
  • Balanced line level inputs with gain trim
  • Configurable for 4 channel, dual stereo or mono use
  • Per-channel switched hi-pass filter (18 dB/oct below 65 Hz)
  • Optional VTX-WM1 card allows amplifier monitoring from any standard web browser
  • Optional remote volume control (per-channel)
  • Optional Bose EQ cards (per-channel)
  • 2U 19 rackmounting unit
  • Forced-air cooling
  • Five year warranty

Specification

Performance

  • Output Power: Normal Mode, continuous sinewave, into 4 Ω.
  • Power per channel, all channels driven: VTX4240: 240 W
  • Bridge Mode into 8 Ω: VTX4240: 480 W
  • Frequency Response: 20 Hz to 20 kHz, +0/-1 dB; (HPF bypassed)
  • High Pass Filter: Switchable, -3 dB @ 65 Hz, slope 18 dB/octave
  • Distortion: THD + N <0.03% @ 1 kHz, 1 W output, 4 Ω load
  • Noise:
    • <100 dB below full output power, 20 Hz to 20 kHz
    • <103 dB with A weighting
  • Crosstalk: -90 dB @ 1 kHz, -70 dB @ 10 kHz
  • Max. VCA attenuation: >90 dB

Inputs

  • Type & connectors: Electronically balanced; 3-pin, 3.5 mm-pitch plug-in screw terminal connectors (4).
  • Max. sensitivity: 0.775 Vrms (0 dBu)
  • Input Impedance: 10 kΩ, balanced

General

  • Output Connectors: 2-pin 5 mm-pitch plug-in screw terminal connectors (4)
  • Power input: 230 V 10% (European version); 110 V 10% (US version)
  • Mains protection: By resettable rear-panel circuit breaker
  • Amplifier Protection: Clip Limiting, VI Limiting, DC Offset, Thermal & switch-on delay
  • Status Indicators: LED Indicators on each channel for Power, Signal Presence, Peak Level & Protection
  • Cooling: Force cooled; two mid-mounted variable speed DC fans
  • Dimensions: (W x H x D) 482.6 mm x 88 mm (2U) x 416 mm (without connectors) or 451 mm (with connectors)
  • Weight: VTX4240 - 16.5 kg (net); 18.5 kg (gross)



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Cloud VTX-WM1 Web Monitor Card, Surveillance Option For VTX Series Amplifiers

93.75 (112.50 Including VAT at 20%)

Cloud VTX-WM1 Web Monitor Card, Surveillance Option For VTX Series Amplifiers, The VTX-WM1 Web Monitor Card is a retrofittable option for Clouds new VTX power amplifiers. It allows the amplifiers performance and settings to be monitored at a remote location using any computer (or PDA, smartphone, etc.), via a standard Internet browser. No dedicated software application or PC hardware is necessary.

The card plugs into a reserved slot on the amplifiers rear panel, and is fitted with an RJ45 Ethernet interface using regular network protocols. The data rate used is very low, which allows the buildings existing IT infrastructure to be used instead of a dedicated network. Amplifiers are simply connected into the IT system at the nearest convenient point. Where multiple amplifiers are co-located (e.g., in a rack), an Ethernet switch, with the appropriate number of ports, may be used to facilitate connection.

The web browser GUI is simple and intuitive, and the data clearly presented. A set of tabbed pages is displayed, which report the details and performance of all the amplifiers on the network. Parameters monitored include: network connection status, the settings of all amplifier rear panel switches and gain controls, protection circuitry activity, internal temperature, power status and input signal level for each channel. Fan operation and RL-1 remote volume control setting (if fitted) are also confirmed.

A load impedance test is available to check the integrity of each channels loudspeaker(s) and cabling. This test may be run either manually (i.e., initiated from the GUI as required), or automatically at pre-determined times and intervals usually during periods of non-occupancy. The frequency used for the impedance test is also programmable.

A password protected Housekeeping page is provided which allows site-wide details of the installation to be entered. This page also allows the load impedance test parameters, IP addresses and other system settings to be configured.

A real-time clock runs independently of the amplifier power supply, and an event log is maintained, which can be inspected as required for investigative purposes in the event of system problems. The system can also be configured to generate an email report if the WM1 detects a fault condition. The report may be formatted as SMS text if required. (This assumes that the necessary Internet connection and email/mobile accounts are available.)

Features

  • Optional Ethernet interface for Cloud VTX power amplifiers, allows remote monitoring of amplifier status from any computer, anywhere
  • Operates with standard web browsers no dedicated software necessary
  • Uses standard network protocols
  • Low data rates mean that existing IT infrastructure can be used no dedicated network necessary
  • Simple and intuitive user interface
  • Easy to set up
  • Monitors internal temperature, signal level, protection circuitry and fans
  • Confirms all amplifier rear panel control settings
  • Checks load impedance on demand, or at scheduled times, using user-defined frequency
  • Real-time clock for event logging and test scheduling
  • Automatic email or SMS text alert on pre-defined fault condition

Specifications

Tone Generator

  • Level: 40 dB below max amp output Injected post level controls,other channels muted.
  • Frequency range: 60 Hz to 20 kHz in 1/3-octave steps

Signal detector

  • Sensitivity: -30 dBu to +10 dBu 20 Hz to 20 kHz

Networking

  • DHCP: Not supported
  • Data rates: 100 Base T
  • Connector: RJ45

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  • RL-1 Dimensions: UK Style 85.8 x 85.8mm

  • RL-1A Dimensions: US Style 69.8 x 114.3mm


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  • For Use With Cloud Products, EQ adaptor may be required.
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  • For Use With Cloud Products, EQ adaptor may be required.
  • Internally Mounted


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Cloud CXL-800 Rack Housing, For Use With Cloud Products CXL-40T, & CXL-100

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  • Can Accept Up To 8 CXL-40, CXL-100 Modules


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Online Catalogue |  Audio  >  Cloud Amplifiers  >  Cloud VTX 4240 960W Four Channel Power Amplifier

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