User Guide

File: OmegaPro18ALargerVentedBox.bb6
OmegaPro18A Large Vented Cabinet
By McJerry, Eminence Speaker LLC
Displacement Limited to 200 Watts; F3 of 40 Hz. Must use a 30 Hz High Pass
filter to protect woofer from overexcursion.
Box Properties
--Description--
Name:
Type: Vented Box
Shape: Prism, square
--Box Parameters--
Vb = 6.581 cu.ft
V(total) = 6.922 cu.ft
Fb = 35 Hz
QL = 7
F3 = 40.11 Hz
Fill = minimal
--Vents--
No. of Vents = 4
Vent shape = round
Vent ends = one flush
Dv = 3 in
Lv = 5.588 in
Driver Properties
--Description--
Name: Omega Pro-18 (8 ohm)
Type: Standard one-way driver
Company: Eminence Speaker LLC
Comment: Revised NOV 2005
Piston: Paper cone.
Suspension: Cloth surround.
Dust Cap: Solid paper dust cap.
Frame: Diecast aluminum basket.
Voice Coil: 4 inch (101.6 mm) copper.
Magnet: 109 oz ferrite magnet.
--Configuration--
No. of Drivers = 1
--Driver Parameters--
Fs = 25.33 Hz
Qms = 8.18
Vas = 548.7 liters
Xmax = 4.8 mm
Sd = 1159 sq.cm
Qes = 0.321
Re = 5.2 ohms
Le = 1.67 mH
Z = 8 ohms
Pe = 800 watts
Normalized Amplitude Response (dB-SPL/Hz)
Eminence Designer
dB
6
0
-6
-12
-18
-24
-30
-36
5 Hz 10 50 100 500 1 K 5 K 10 K 20 K
Custom Amplitude Response (dB-SPL/Hz at 1 m) with 200 watts
Eminence Designer
dB
127
121
115
109
103
97
91
85
5 Hz 10 50 100 500 1 K 5 K 10 K 20 K
Maximum Acoustic Power (dB-SPL/Hz at 1 m)
Eminence Designer
dB
131
125
119
113
107
101
95
89
5 Hz 10 50 100 500 1 K 5 K 10 K 20 K