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Vented Enclosures
Vb is the internal volume, before any speaker and/or port
NOTE:
displacement is added. All external dimensions were based on
the use of 1" (2.54cm) materials.
NOTE: When using enclosures other than recommended, call Technical Support
for correct application.
1" MDF
P
W
Optimum High Output Vented (Ported) Enclosure Sizes
H.O. Vented Enclosures
Total Internal Volume cu. ft. (Liter)
V
- Internal Volume cu. ft. (Liter)
b
Woofer Displacement cu. ft. (Liter)
Port Displacement cu. ft. (Liter)
F
- Tuning Frequency (Hz)
B
F
- 3dB Point (Hz)
3
H - Height - inch (cm)
W - Width - inch (cm)
D - Depth - inch (cm)
P - Port Area (Height x Width) and Length
- inch (cm)
NOTE: The port shown can be placed on any face of the enclosure as long as the
port ends are not obstructed.
NOTE: When using vented enclosures, for maximum reliability and power han-
dling ensure, that a subsonic or "infrasonic" filter is used so that only usable low
frequency signal is sent to the subwoofer.
H
D
13"
16"
4.0 (113.27)
5.5 (155.74)
3.1 (87.78)
4.11 (116.38)
0.25 (7.08)
0.29 (8.21)
0.65 (18.41)
1.1 (31.15)
38.0
35.0
32.0
29.0
16.0 (40.64)
20.0 (50.8)
38.0 (96.52)
33.0 (83.82)
16.0 (40.64)
18.5 (47)
14 x 3 x 20.5
18 x 3 x 23
(35.56x7.62x52.07)
(45.72x7.62x58.42)
Wiring Configurations
By varying the wiring configuration of your speakers you can create an impedance
load to match your system. Altering the wiring configurations gives a range of
options for impedance loads. Series, Parallel, or Series-Parallel wiring configura-
tions are different techniques for wiring speakers that provide different loads. Se-
ries configuration is a string method where speakers are wired end to end. Parallel
configuration uses two or more speakers wired across common terminals. Series-
Parallel configuration combines both techniques. Choose the wiring diagram that
corresponds to the number of woofers and the impedance of your amplifier.
Parallel Wiring
Series Wiring
Subwoofer Crossovers
There are two operational types of crossovers, passive and active. Passive cross-
overs (coils or inductors) are placed on the speaker leads between the amplifier
and speaker. An active crossover is an electronic filter that separates the audio
signal fed to different amplifiers. For optimum subwoofer performance, we recom-
mend using an active 80-100Hz low-pass crossover at 12dB/octave.
Enclosures
1Ω
2Ω
2Ω
(2) 2 ohm SVC Speaker = 1 ohm Load
2Ω
1Ω
1Ω
(2) 1 ohm SVC Speaker = 2 ohm Load
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