Reason-X18B

Built exclusively to deliver incredible sonic definition at high volumes, Reason-X series brings new concepts and new qualities to become the premium pro audio loudspeaker series in the Wharfedale Pro portfolio.


The Reason-X series has 2 models of subwoofer.  A single 18” and a floor destroying 148dB Max SPL dual 18”.  New LF drivers have been created which feature NOMEX spiders for extreme suspension and durability.  4.0” voice coils and a newly designed aluminium basket make these LF transducers impossible to describe in words - they need listening to instead!

All models are constructed of premium baltic birch and use thick steel front grilles for extreme durability.

Key Features

  • 18" passive subwoofer
  • All new LF driver
  • 4.0" voice coil
  • Aluminium basket design
  • 35mm pole socket plus 2 side handles
  • Max SPL @1m 139 dB
  • 1000 w RMS 
  • 2000 w Program
  • 4000 w Peak
  • Plywood construction

  • 18" passive subwoofer
  • All new LF driver
  • 4.0" voice coil
  • Aluminium basket design
  • 35mm pole socket plus 2 side handles
  • Max SPL @1m 139 dB
  • 1000 w RMS 
  • 2000 w Program
  • 4000 w Peak
  • Plywood construction

Impressive specifications

Reason-X18B is no pushover when it comes to specifications

139 dB Max SPL @ 1meter

1000 watts RMS

2000 watts Program

4000 watts Peak

Reason-X brings the low end impact any serious rig needs.

Custom design - upgraded driver

The driver inside the Reason-X subwoofer has some special features.

∮102.6 diameter voice coil.  
 (Thats OVER 4.0" but we say 4.0" because of number rounding)

Double-layer spider bonding.
Updated mute glue is used.  This bonding can eliminate brittle cracking and reduces harmonic distortion.

112g Membrane.
The Reason-X subwoofer driver has a heavier membrane which can withstand more power without breaking. 

31mm voice coil cavity.
A larger internal cavity for the coil windings allows Reason-X to have lower response by 5Hz.

6.2 ohm impedance.
The impedance peak is higher in the Reason-X driver at 35Hz.  This results in superior low end strength. 

Specifications
Model NameReason-X18B
System TypePassive
ConfigurationSingle Subwoofer
Frequency Response (+/-3dB)35-1kHZ
Frequency Range (-10dB)30-800HZ
Sensitivity 2.83V/1M103dB
Calculated Maximum SPL @1M139dB
System Rated Impedance
Low Frequency Transducer 
Size470mm / 18"
Voice Coil Size102mm / 4"
LF Magnet Materialferrite
LF Frame Materialaluminium
Rated Impedance
LF Power re:AES2-20121000W
Mid Frequency Transducer 
Size 
Voice Coil Size 
MF Magnet Material 
MF Frame Material 
Rated Impedance 
MF Power re:AES2-2012 
High Frequency Transducer 
HF Driver Type 
Coil Size (mm / inches) 
Exit Size (mm / inches) 
HF Magnet Material 
Diaphragm Material 
Rated Impedance 
HF Power re:AES2-2012 
Waveguide Type 
Nominal Coverage (H x V) 
Nominal Impedance 
Power 
System Continuous Power (W)1000W
System Programme Power (W)2000W
System Peak Power (W)4000W
Crossover Frequency 
Input Connector2 x speakON
RiggingNo
Handles2 on Sides
Enclosure 
Cabinet Typesquare
Enclosure Material and finish18mm plywood
Colour Optionsblack paint
Grille Material & Finishsteel
Dimensions - Unpacked (mm / inches): 
Height600mm / 23.6"
Width Front560mm / 22.0"
Width Rear560mm / 22.0"
Depth756mm / 29.8"
Dimensions - Packed (mm / inches): 
Height670mm/26.4"
Width Front829mm/32.6"
Width Rear829mm/32.6"
Depth633mm/24.9"
Weight 
Net Weight45.5kg / 100.1lbs.
Gross Weight55.2kg / 121.4lbs.
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