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Wharfedale Pro

Wharfedale Pro DELTA-AX12 Active Speaker



Active plywood loudspeakers. 

  • Class D amplified active loudspeakers
  • Custom Wharfedale Pro transducers
  • Premium Baltic Birch plywood construction
  • 2-way models feature internal Qubit DSP
  • Subwoofers with Low Pass filter control
  • 4-way rubberised handles
  • Large voice coils
  • Impressive SPL figures
  • For install or on the road


  • 12″ two-way bi-amplified active loudspeaker
  • 750 watts Continuous power
  • 1500 watts Peak power
  • 90° x 45° dispersion
  • 2″ HF Compression driver
  • 3″ LF voice coil
  • Advanced Internal QuBit DSP 
  • 130 dB Max SPL @ 1 meter


All Delta-AX models use premium Baltic birch plywood construction.

Not only does this create a solid and durable cabinet, but it also contributes to the overall sound and character.

Delta-AX is also covered in our most durable and hard wearing Rhino Rock paint finish. This ensures that a Delta-AX will always look as good as the day you unboxed it.


Delta-AX features a routed Wharfedale Pro logo.

This fresh design helps to distinguish between the original Delta-A models and the updated Delta-AX models.

It is also a logo to be proud of. A logo that lets your audience know that the sound of your even will be of the highest possible quality.


Model Name DELTA-AX12
System Type Active 12” 2-way Bi-Amplified
Frequency Response (+/-3 dB) 60 Hz – 20 KHz
Frequency Range (-10 dB) 55 Hz – 20 KHz
Calculated Maximum SPL @1 m 130 dB
Low Frequency Transducer –
Size (mm / inches)
332 mm / 12″
Coil Size (mm / inches) 75 mm / 3″
Impedance 4 Ω
High Frequency Transducer – Type Compression Driver
Coil Size (mm / inches) 51.2 mm / 2″
Exit Size (mm / inches) 35.6 mm / 1.4″
Diaphragm Material Titanium
Impedance 8 Ω
Nominal Coverage (H x V) 90° x 45°
Low-Frequency Power Amplifier RMS 600 w (Class D)
High-Frequency Power Amplifier RMS 100 w (Class D)
Amplifier Protection Yes
Power On Protection Power switch on/off mute
Thermal Protection Amplifier Shut Down. Auto Reset
Low Line Voltage Shut Down 80% Nominal Line Voltage
Driver Protection Independent LF and HF Limiters
DC and Short Protection Yes
Clip Limiter Turns on Approx @ 650 w Output
Limiter Indicator Red LED
Power Indicator Green LED
Input A – type Switchable Balanced Mic or Line Level Input
Input Sensitivity Mic:-40 dBu Line:0 dBu
Maximum Input Level 22 dBu
Input Connector XLR 1/4” Combo jack / 2 x RCA
Input Impedance Balanced:20 KΩ Unbalanced:10 KΩ
Line Output Connector Switchable LOOP/MIX Balanced
Male XLR Connector
Impedance Balanced Balanced: 200 Ω Unbalanced:100 Ω
Loop Gain 0 dB
AC Power details – Power Supply High Efficiency SMPS
AC Power Options AC100-120 V~ / 220-240 V~,50/60 Hz
Power On Indicator Green LED
Hardware – Rigging M10 x 6
Enclosure Material and finish 15 mm Plywood
Colour Options Black Rhino Paint
Grille Material & Finish 1.2 Steel
Unpacked dimensions – Height 640 mm / 25.2″
Width (Front) 390 mm / 15.35″
Width (Back) 241.2 mm / 9.5″
Depth 373 mm / 14.69″
Packed Dimensions – Height 745 mm / 29.3”
Width (Front) 566 mm / 22.3”
Width (Back) 328 mm / 12.9”
Depth 464 mm / 18.3”
Net Weight (kg / lbs) 27.9 kg / 61.2 lbs
Gross Weight (kg / lbs) 32.5 kg / 71.5 lbs


Download user manual