QX Series Active Moulded PA Speakers

178.758UK QX15A

Active PA speaker units in a contemporary styled moulded ABS cabinet with integral carry handle and a constant directivity horn. The built-in mixer amplifier section delivers high output to the dri...

  • Built-in amplifier with mixer section
  • Lightweight ported cabinet
  • Titanium compression driver
Description Version Packed
178.755UK
QX12A Active Speaker Cabinet
12" Black Box Label
178.758UK
QX15A Active Speaker Cabinet
15" Black Box Label

QX Series Active Moulded PA Speakers

Active PA speaker units in a contemporary styled moulded ABS cabinet with integral carry handle and a constant directivity horn. The built-in mixer amplifier section delivers high output to the driver units to develop high SPLs.

  • Built-in amplifier with mixer section
  • Lightweight ported cabinet
  • Titanium compression driver
  • Mic/line inputs with volume controls
  • Tone controls
  • 35mm internal top hat
  • Power supply 230Vac, 50Hz (IEC)
  • SNR 87dB
  • THD 0.1%
  • Dispersion 90° x 60° (H x V)
  • Impedance 4 Ohms

Versions

  178.755UK 178.758UK
Inputs Mic (combo), Line (RCA) Mic (combo), Line (RCA)
Power rms 200W 250W
Power max. 400W 500W
SPL @ 1W/1m 101dB 103dB
LF driver 300mm (12") 380mm (15")
LF driver : coil size 52mmØ 65mmØ
HF driver 38mm Ti compression driver 50mm Ti compression driver
HF driver : coil size 25mmØ 35mmØ
Frequency response 45Hz - 20kHz 40Hz - 20kHz
Max. SPL 127dB 129dB
Crossover frequency 3.5kHz 3.0kHz
Dimensions 345 x 565 x 320mm 420 x 675 x 370mm
Weight 13.2kg 17.8kg

Support : articles

Active speakers

Active speakers contain their own amplifier to drive the speaker, which will be matched by impedance and power handling. This makes them a simple solution for distributed audio systems.

Sunday, 1st January 2017

Speaker system types

Our speaker and amplifier products cover many environments and applications with a focus on clear and efficient sound coverage. Here we discuss the different types of systems

Sunday, 1st January 2017

Amplifier Classes

There have been many developments in audio electronics, resulting in different amplifier circuit designs. Such designs can be divided into classes, of which 4 main types are relevant to audio – A, AB, H and D.

Friday, 28th February 2020

Power Ratings: RMS vs Max vs Peak

A summary explaining the key differences between RMS, Max and Peak power ratings.

Tuesday, 10th March 2020

In the box

The box for this item contains :

  • QX series active speaker
  • IEC power lead(s)

Downloads

Instruction manual
For 178.758UK (231KB)
UK Declaration of conformity
For 178.758UK (252KB)
EU Declaration of conformity
For 178.758UK (241KB)

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