User Guide

File: Beta15ALargeVentedBox.bb6
Beta15A Large Vented Woofer Enclosure
By McJerry, Eminence Speaker LLC
Displacement Limited to 100 Watts; use above 40 Hz.
Will require EQ for flat playback.
Box Properties
--Description--
Name:
Type: Vented Box
Shape: Prism, square (optimum)
--Box Parameters--
Vb = 6 cu.ft
V(total) = 6.133 cu.ft
Fb = 47.79 Hz
QL = 7
F3 = 44.78 Hz
Fill = minimal
--Vents--
No. of Vents = 2
Vent shape = round
Vent ends = one flush
Dv = 4.25 in
Lv = 0.75 in
Driver Properties
--Description--
Name: Beta-15
Type: Standard one-way driver
Company: Eminence Speaker LLC
Comment: Revised OCT 2005
Piston: Ribbed paper cone.
Suspension: Cloth surround.
Dust Cap: Solid composition paper dust cap.
Frame: Pressed steel basket.
Voice Coil: 2 inch (50.8 mm) coated copper.
Magnet: 38 oz ferrite magnet.
--Configuration--
No. of Drivers = 1
--Driver Parameters--
Fs = 35 Hz
Qms = 8.1
Vas = 334.6 liters
Xmax = 4 mm
Sd = 823.7 sq.cm
Qes = 0.63
Re = 6.32 ohms
Le = 1.1 mH
Z = 8 ohms
Pe = 350 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 100 watts
Eminence Designer
dB
123
117
111
105
99
93
87
81
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
127
121
115
109
103
97
91
85
5 Hz 10 50 100 500 1 K 5 K 10 K 20 K