User Guide

File: Alpha2-8GreatEightSealed160Watts.bb6
Alpha 2-8 Eight Driver Array In Sealed Box
By Jerry McNutt, Eminence Speaker LLC
160 Watts Power Handling. Use above 300 Hz.
Make into a stick and put it on top of a 15" or a pair of 12" woofers.
Box Properties
--Description--
Name:
Type: Closed Box
Shape: Prism, square
--Box Parameters--
Vb = 0.141 cu.ft
V(total) = 0.155 cu.ft
Qtc = 0.681
QL = 20
F3 = 219.6 Hz
Fill = heavy
A
B
C
--External Dimensions--
A = 22.34 in
B = 4.557 in
C = 4.522 in
--Internal Dimensions--
A = 21.34 in
B = 3.557 in
C = 3.522 in
--Wall Thickness--
Front = 0.5 in
Side = 0.5 in
Driver Properties
--Description--
Name: Alpha 2-8
Type: Standard one-way driver
Company: Eminence Speaker LLC
Comment: 2" Full Range Driver
--Configuration--
No. of Drivers = 8
Mounting = Standard
Wiring = Series-Parallel
Drivers sum coherently = Yes
--Mechanical Parameters--
Fs = 185.6 Hz
Qms = 3.06
Vas = 0.18 liters [1.44]
Cms = 0.84 mm/N [0.105]
Mms = 0.88 g [7.04]
Rms = 0.33 kg/s [2.64]
Xmax = 1.7 mm
Xmech = 2.2 mm
P-Dia = 39.55 mm [111.9]
Sd = 12.37 sq.cm [98.96]
P-Vd = 0.00209 liters [0.0167]
--Electrical Parameters--
Qes = 0.94
Re = 6.4 ohms [3.2]
Le = 0.13 mH [0.065]
Z = 8 ohms [4]
BL = 2.64 Tm [5.287]
Pe = 20 watts [160]
--Electromech. Parameters--
Qts = 0.719
no = 0.118 % [0.945]
1-W SPL = 82.87 dB [91.9]
2.83-V SPL = 83.84 dB [95.88]