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Electronics Retailer & Wholesaler, Australia

4 X 280 WATT POWER AMPLIFIER4 OHM & 70/100V

  • Code:

    01454139
  • Model:

    QX4280
  • Brand:

  • Unit:

    Each
  • Stock:

    BUY-IN
  • +
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$3393.50
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This product is a special buy-in. Special buy-in products are goods specially bought in on customer's request. After acceptance, special buy-in products cannot be cancelled or the goods returned, unless Radio Parts and its supplier agrees to the cancellation of the corresponding order and return of goods. Prices are subject to change and in the event that our purchase price has changed, we will notify you before finalising your order. Please call us on 1800 337 366 for availability, ETA or if you have further questions.
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QX-280 Series Corporate Power amplifiers

 

Made in Australia

Like all Quest products, the QX-280 Series is made to survive in a tough world.

Australian QC and advanced design engineering mean years of trouble free service in professional applications.

The QX-280 Series provides a price/performance ratio thatis hard to beat.

 

Studio quality sound and plenty of channels - the QX-280 Series is available in a wide range of single and multi-channel configurations.

Specifically designed for AV installations and high endcommercial sound, where hi-fidelity audio is required.

Powered with the latest in high quality, energy efficient, Class D amplifiers;

the QX-280 Series amplifiers can be integrated into both low impedance, and 70/100V line installations without compromise

A Closer Look

The QX-280 range consists of three separate models.

  • QX1280 - single channel x 280 Watt
  • QX2280 - two channels x 280 watts
  • QX4280 - four channel x 280 watts

Audio quality is studio class in both high and low impedance operation.

High quality class D amplifier technology makes it possible to have a compact single rack format with the right combination of power and channel density.

The transformerless outputs deliver full range audio toall impedance loads from 4Ω to 70/100V systems.

Each amplifier channel has a selectable 80 Hz high-pass filter (selectable via a swith located on the rearpanel), and a volume control for each channel that can be accessed directly from the front panel.

Each amplifier channel is also provided with a thermally controlled cooling fan.

Features

  • High Efficiency Class-D Amplifier(s)
  • 70/100V or Low Impedance Operation
  • Compact 1RU Chassis
  • Auto-Sleep Function
  • Selectable 80Hz High Pass Filter
  • Built-In Limiter Circuit
  • Thermally Controlled Fans
  • AC power range 85-265VAC 50/60Hz.
  • ErP (1275/2008/EC) compliant standby consumption < 0.5W (*per channel)
  • Available in 1, 2 or 4 Channel Models

Energy Conserver

Whether awake or asleep, the QX-280 amplifiers are not hungry for power.

The amplifier functions across the power range at an 89.5% efficiency rate.

With a sleep mode mains current draw of less than 0.5 watts per amplifier channel.

This is a great benefit for venues with a high amplifier channel count.

The automatic standby functionality mutes an individual amplifier channel after no signal has been detected for 10mins or more; and will put the amplifier into sleep a modeafter 30mins.

Automatic standby can be turned on and off for individualchannels via a switch located on the rear panel.

The operational voltage range of the QX-280 Series is also wide ? from 85 to 265VAC, and no manual switching is required for high and low impedance operation.

This is a great reliability benefit for installations subject to inconsistent mains supply.

 

Specifications

  • Peak Output Current
25A
  • THD+N (1kHz @ 1W / 1kHz ½ Rated Power)
0.022% / 0.015%
  • Dynamic Range
119dBA
  • Output Resistance (1kHz)
43.6m ohm
  • Peak Output Voltage (unloaded)
±140V
  • Power Output
4 ohm 280W
8 ohm 245W
70V 250W
100V 240W
  • DC Offset
±7mV
  • Frequency Response
±0.1dB 20Hz - 20kHz (1st order 22kHz LPF)
  • Voltage Gain (@ 1kHz)
32dB

Mechanical Specifications
  • Net Weight
QX1280 - 4.5kg QX2280 - 4.9kg QX4280 - 5.7kg
  • Gross Weight
QX1280 - 7.1kg QX2280 - 7.5kg QX4280 - 8.3kg
  • Dimensions (H x W x D)
44 x 485 x 304mm
  • Input Connections
3-Way 5.08mm Captive Screw Connector
  • Output Connections
2-Way 5.08mm Locking Captive Screw Connector
  • Mains Power Connection
IEC C14
  • Mains Input Voltage
85 - 265VAC

* All specifications were measured at 240VAC

** Quest Engineering reserves the right to make changes in specifications, or products without prior notice.

*** The figures shown above are ‘real world’,usable specifications and are conservative as a result.

  • Quest Engineering does not believe in portraying misleading or exaggerated specifications.