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Peerless by Tymphany BC18WK05-08 6-1/2″ Paper Cone Woofer 8 Ohm
The Peerless BC18WK05-08 6-1/2″ woofer features a paper cone, rubber surround, and powerful voice coil suspended in a ferrite motor. It allows high excursion and features a rigid plastic basket, and is designed to be a high performance transducer.

Product Specifications
Nominal Diameter
6-1/2″

Power Handling (RMS)
30 Watts
 
Power Handling (max)
60 Watts

Impedance
8 ohms
 
Frequency Response
20 to 8,000 Hz

Sensitivity
91.1 dB 2.83V/1m
 
Voice Coil Diameter
1″
Thiele-Small Parameters
Resonant Frequency (Fs)
59.35 Hz

DC Resistance (Re)
5.55 ohms
 
Voice Coil Inductance (Le)
0.28 mH

Mechanical Q (Qms)
2.50
 
Electromagnetic Q (Qes)
0.57

Total Q (Qts)
0.46
 
Compliance Equivalent Volume (Vas)
0.59 ft.³

Mechanical Compliance of Suspension (Cms)
0.621 mm/N
 
BL Product (BL)
6.51 Tm

Diaphragm Mass Inc. Airload (Mms)
11.6g
 
Maximum Linear Excursion (Xmax)
3.4 mm
Materials of Construction
Cone Material
Paper

Surround Material
Foam
 
Basket / Frame Material
Polymer

Magnet Material
Ferrite
 
Mounting Information
Overall Outside Diameter
7.09″

Baffle Cutout Diameter
5.69″
 
Depth
3.17″

Bolt Circle Diameter
0.19″
 
# Mounting Holes
6
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
Sealed Volume
0.22 ft.³

Sealed F3
109.8 Hz
 
Vented Volume
0.72 ft.³

Vented F3
53.97 Hz