Wharfedale Pro Reason X218B 2 x 18" Passive Subwoofer

Description:

The Wharfedale REASON-X18B 18" dual passive subwoofer has 4" diameter voice coils.

Features:

Dual 18″ passive subwoofer
All new LF drivers
4.0″ voice coils
Aluminium basket design
4 side handles
Max SPL @ 1 meter 148 dB
2000 w AES (RMS)
4000 w Program
8000 w Peak
NEW SUBWOOFER DRIVER
The driver inside the Reason-X subwoofer has some very 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.
112 g Membrane: The Reason-X subwoofer driver has a heavier membrane which can withstand more power without breaking.
31 mm voice coil cavity: A larger internal cavity for the coil windings allows Reason-X to have lower response by 5 Hz.
6.2 ohm impedance: The impedance peak is higher in the Reason-X driver at 35 Hz. This results in superior low end strength.

Specifications:

System Type: Passive
Configuration: Dual Subwoofer
Frequency Response (+/-3 dB): 30-1 KHz
Frequency Range (-10 dB): 25-800 HZ
Sensitivity 2.83 V / 1 Meter: 109 dB
Calculated Maximum SPL @1 Meter: 148 dB
System Rated Impedance: 4 Ω
Low Frequency Transducer:
Size: 470 mm / 18"
Voice Coil Size: 102 mm / 4"
LF Magnet Material: ferrite
LF Frame Material: Aluminium
Rated Impedance: 2 x 8 Ω
LF Power re:AES2-2012: 2 x 1000 W
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 AES (RMS) Power (W): 2000 W
System Programme Power (W): 4000 W
System Peak Power (W): 8000 W
Crossover Frequency:
Input Connector: 2 x speakON compatible
Rigging: No
Handles: 4 on Sides
Enclosure:
Cabinet Type: square
Enclosure Material and finish: 18 mm plywood
Colour Options: Black paint
Grille Material & Finish: Steel
Dimensions - Unpacked (mm / inches)::
Height: 560 mm / 22.0"
Width Front: 1065 mm / 41.9"
Width Rear: 1065 mm / 41.9"
Depth: 756 mm / 29.8"
The impedance peak is higher in the Reason-X driver at 35 Hz.