JL Audio 8W3 - User Manual

8W3
29.2 Hz
0.312
0.355
2.612
1.85 52.3
0.203 5.2
87.4 dB
30.7 0.0198
3.82 Ω
4 Ω
125 Watts
Subwoofer Specifi cations
Fs (free-air resonance):
Qts (total speaker “Q”):
Qes (electrical “Q”):
Qms (mechanical “Q”):
Vas (equivalent compliance):
Xmax (linear excursion one-way):
Effi ciency (1W/1m)*:
Sd (effective piston surface area):
Re (DC resistance):
Znom (nominal impedance):
Pt (continuous thermal power handling):
Physical Dimensions
Frame Diameter (A):
Mounting Hole Diameter (B):
Mounting Depth (C):
Overall Depth (D):
Magnet Diameter (E):
Displacement:
Normal Recommended Enclosures (single driver)
Sealed Enclosure
•Enclosure dimensions listed are external dimensions which assume the use of 0.75 inch (19mm) thick material. If you are using
0.625 inch (16mm) thick material, subtract 0.25 inches (6.5mm) from each dimension. Do not use material with a thickness of
less than 0.625 inches (16mm).
•Enclosure volumes listed are NET internal volumes. Driver displacement, port displacement and brace displacement must be
added to obtain the fi nal gross volume. The dimensions listed have already taken this into account.
•When using two subwoofers in a common enclosure simply double the required volumes and use two of the recommended ports
(when needed). Likewise, when using three subwoofers in a common enclosure simply triple the required volume and number
of ports (when needed).
*Effi ciency (1W/1m) is not an accurate indicator of a subwoofer’s output capability and should not be used as a
comparison to other subwoofers to determine which one is “louder”!
Ported Enclosure
H
D
W
H
D
W
ft
3
liters
in.
mm
in
2
m
2
A
B
C
D
E
Port
(inside dia. X length)
Model
Sealed
Enclosure
Ported
Enclosure
8W3
15” x 10” x 21.25”
381mm x 254mm x 540mm
2.5” X 7.8”
63.5mm X 198mm
1.25 ft
3
width X height X depthVolume (Net Int.)
35.4 l
Be sure to allow 0.75 inches (19mm) for pole vent clearance on this driver.
Not Available
Not Recommended
ft
3
liters
0.03
0.848

Summary

Subwoofer Specifications

Electrical and Mechanical Parameters

Key technical specifications including resonance, impedance, excursion, and power handling.

Physical Dimensions

Driver Measurements

Physical dimensions of the subwoofer frame, mounting, depth, and displacement.

Recommended Enclosures

Sealed Enclosure

Recommended net internal volume and external dimensions for a sealed enclosure.

Ported Enclosure

Recommended net internal volume, external dimensions, and port size for a ported enclosure.

Amplifier Connections and System Notes

Wiring Configurations

Diagrams and explanations for wiring single or multiple subwoofers to an amplifier.

System Recommendations

Notes on impedance matching, bi-amplification, and port system usage.

JL Audio 8W3 Specifications

General

Type	Subwoofer
Size	8 inches
Power Handling (RMS)	300 watts
Power Handling (Peak)	600 watts
Impedance	4 ohms
Frequency Response	25 - 250 Hz