Datasheet

File: Beta12LTALargerVentedBox.bb6
Beta12LTA Larger Vented Cab; Low Pwr FR PA or Monitor
By McJerry, Eminence Speaker LLC
Displacement Limited to 45 Watts; F3 of 48 Hz. Use a steep high pass filter
set to 30 Hz.
Box Properties
--Description--
Name:
Type: Vented Box
Shape: Prism, square
--Box Parameters--
Vb = 4 cu.ft
V(total) = 4.096 cu.ft
Fb = 40 Hz
QL = 7
F3 = 47.51 Hz
Fill = minimal
--Vents--
No. of Vents = 2
Vent shape = round
Vent ends = one flush
Dv = 3 in
Lv = 2.624 in
Driver Properties
--Description--
Name: Beta-12LT
Type: Standard one-way driver
Company: Eminence Speaker LLC
Comment: Revised Nov 2005
Piston: Paper cone with whizzer cone.
Suspension: Cloth surround.
Dust Cap: Solid paper dust cap w/whizzer.
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 = 45 Hz
Qms = 6.44
Vas = 136.3 liters
Xmax = 3.2 mm
Sd = 532.4 sq.cm
Qes = 0.55
Re = 7.37 ohms
Le = 0.83 mH
Z = 8 ohms
Pe = 225 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 45 watts
Eminence Designer
dB
119
113
107
101
95
89
83
77
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
125
119
113
107
101
95
89
83
5 Hz 10 50 100 500 1 K 5 K 10 K 20 K