User Guide

File: Alpha2-8SealedTeamSix120Watts.bb6
Alpha 2-8 SIx Driver Array in a Sealed Box
By Jerry McNutt, Eminence Speaker LLC
120 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 = 0.0948 cu.ft
V(total) = 0.105 cu.ft
Qtc = 0.688
QL = 20
F3 = 220 Hz
Fill = heavy
A
B
C
--External Dimensions--
A = 22.34 in
B = 4.557 in
C = 3.403 in
--Internal Dimensions--
A = 21.34 in
B = 3.557 in
C = 2.403 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 = 6
Mounting = Standard
Wiring = Series-Parallel
Drivers sum coherently = Yes
--Mechanical Parameters--
Fs = 185.6 Hz
Qms = 3.06
Vas = 0.18 liters [1.08]
Cms = 0.84 mm/N [0.14]
Mms = 0.88 g [5.28]
Rms = 0.33 kg/s [1.98]
Xmax = 1.7 mm
Xmech = 2.2 mm
P-Dia = 39.55 mm [96.87]
Sd = 12.37 sq.cm [74.22]
P-Vd = 0.00209 liters [0.0125]
--Electrical Parameters--
Qes = 0.94
Re = 6.4 ohms [4.267]
Le = 0.13 mH [0.0867]
Z = 8 ohms [5.333]
BL = 2.64 Tm [5.287]
Pe = 20 watts [120]
--Electromech. Parameters--
Qts = 0.719
no = 0.118 % [0.709]
1-W SPL = 82.87 dB [90.65]
2.83-V SPL = 83.84 dB [93.38]