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Wharfedale DELTA-AX15B 15" Active Sub 900w

Wharfedale DELTA-AX15B 15" Active Sub 900w

Regular price $1,299.00 Sale price $1,099.00

The updated DELTA-AX series features improved internal electronics. The newly designed power components ensure high performance and extreme reliability.

DELTA-AX can easily be recognised with the iconic Wharfedale Pro boomerang logo routed into the top surface.
Capable of producing extraordinary levels of SPL and output, inside every DELTA-AX speaker are high headroom amplifiers exclusively engineered by Wharfedale Pro.  The DELTA-AX15B has an impressive low end frequency response of 42Hz - 200Hz which gives any PA system that rumble, punch and impact to impress any audience.
DELTA-AX is constructed from birch plywood and features dual angle pole mounts to ensure that your sound is aimed directly at the audience, not at the ceiling.
....and it is ready for installation
DELTA-AX15B a great installation solution too. Clubs, restaurants and houses of worship around the world already rely on DELTA systems day in, day out.   The updated electronics of the DELTA-AX15B give you peace of mind for long-term use.

Key Features

  • 15" active subwoofer
  • Premium Baltic birch construction
  • Low pass filter control
  • Hi Pass link outputs
  • 42Hz - 200Hz Frequency response
  • 180° phase switch
  • 4" LF voice coil
  • 900w Continuous
  • 1800w Peak
  • 130dB Max SPL @ 1m
The powerful Class D amplifier is connected to a comprehensive input stage.


Balanced inputs, balanced line level outputs plus Hi Pass Filter outputs make connections simple and versatile.


A Low Pass Filter control allows for fine tuning to whatever full range tops are being used in the system.
DELTA-AX uses premium Baltic birch plywood construction.


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


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.
Inside the DELTA-AX15B is a highly efficient Class D amplifier.


Using convection cooling, DELTA-AX models do not use any internal fans. Fans add to product weight, ambient noise and can lead to unreliability. DELTA-AX has no fans!


The amplifier has been perfectly matched to the custom 15" low frequency driver. This perfect combination leads to maximum efficiency and supreme output SPL.


Model Name DELTA-AX15B
System type Active subwoofer
Frequency Response (+/-3dB) 42Hz - 200Hz
Calculated Maximum SPL @1m 130dB
LF Transducer  
Size 404mm / 15"
Coil size 101.6mm / 4.0"
Amplifier 900w Continuous
Protection Power on/off mute, thermal, low line level voltage shutdown
Input A - type Balanced line
Input sensitivity Line:0dBu
Max input level 22dBu
Input connectors TRS jack and Female XLR
Impedance Balanced:20KΩ Unbalanced:10KΩ
Loops gain 0dB
AC Power AC100-120V~/220-240V~,50/60HZ
Enclosure material 15mm Plywood
Grille material 1.2mm steel
Unpacked dimensions  
Height 471mm / 18.54"
Width 471mm / 18.54"
Depth 600mm / 23.62"
Packed dimensions  
Height 556mm / 21.89"
Width 672mm / 26.46"
Depth 543mm / 21.38"
Net Weight 33.1kg / 72.82lbs
Gross Weight 36.7kg / 80.74lbs