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APS COAX - Dual-Concentric Two-Way Speaker 10.2" 280W (Pair) - Black

£1,428.00 £1,190.00 (ex. vat)


  • APS COAX Rear


The APS COAX is an active two-way near-field monitor designed using the Coaxial approach where the precoated fabric dome of the tweeter intergrates with the cone of woofer to a point source - the acoustic position of the source remains the same regardless of change in distance. This price is for a pair.

The Coaxial approach to monitoring has been around for quite a few years. Some of the greatest speaker designs used it in the past, though it has since fallen into disuse. At a growing requests from APS users we have designed one of our own breed.

Such design makes COAX a perfect tool for precise stereo image control, making work on panning and spatial effects a breeze. Despite its small size it had proven to be a great tool for tracking instruments where its razor like stereo image proved very useful.

High-quality components and APS' no-compromise made in Europe approach to construction make COAX a proud heir to its great predecessors. Outstanding stereo imaging, punchy low end, extremely at frequency response and high SPL level handling, coupled with the by now famous APS custom finishes make it the obvious choice for all those looking for a great sounding, gorgeous looking near-field coaxial monitor.

Coax studio monitor is an active 2-way appliance equipped with coaxial speaker and two independent power amplifiers for each speaker fixed on the back plate of the monitor enclosure, as well as with an appropriate set of precise regulators, signalizes, inputs and security devices.

Coaxial speaker applied in Coax is produced by well known company SEAS from Norway. The woofer is a construction meeting the APS strict requirements.

The cabinet of Coax monitor is sealed-box design with 19 mm thick side walls and 28 mm front baffle. The internal wall separating speaker chamber from electronic module makes the whole construction rigid and solid. The edges of the monitor enclosure have been rounded to reduce reflections and to improve the quality of produced sound. The inner wall of the enclosure that completely separates the electronic module from the speaker chamber constitutes at the same time an additional reinforcement of the enclosure eliminating minute oscillations of the monitor enclosure side walls.

Black semi-gloss lacquer is the standard finish of Coax.


Near-field monitor

  • Type: Active – two power amplifiers
    • Tweeter: monolithic integrated circuit TDA7294
    • Woofer: monolithic integrated circuit TDA7294
  • System: Two-way
  • Crossover Frequency: 3 kHz (slope: 12 dB/octave)
  • Dimensions (H x W x D): 21 cm x 33 cm x 30 cm
  • Free Field Frequency Response: ±5 dB: 50 Hz - 30 kHz
  • SPL in Free Field @ 1m:
    • RMS: 101 dB (single)
    • Peak: 109 dB (pair)
  • Weight: 11 kg

Coaxial loudspeaker

  • Bass/Mid-Range Loudspeaker:
    • Ø 18 cm / 7" 
    • Diaphragm: polypropylene, surround: rubber
  • Tweeter loudspeaker:
    • Ø 2.5 cm / 1"
    • Diaphragm: fabric dome


  • Bass/Mid-Range Power Amplifier: 70 W RMS @ 8Ω
  • Tweeter Power Amplifier: 70 W RMS @ 6Ω
  • Total Harmonic Distortions: 
    • 0.005 % – PO = 5 W, f = 1 kHz
    • 0.1 % max – PO = 0.1 up to 50 W, f = 20 Hz up to 20 kHz
  • Signal to Noise Ratio:
    • 103.5 dB – weighted by A curve 
    • 101 dB – in band of 20 Hz up to 20 kHz
  • Input Voltage Level for 100 dB SPL in Free Field @ 1m: 0 dBu (i.e. 0.775 V) – calibrated regulators in 0 dBu, 0 dB positions
Manufacturer APS

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