Specification Sheet

Data Measured: Jul 7, 2009 Tue 10:05 am
Person:
Company:
Project:
File: ALPHA8MRA.lib
Nov 4, 2013
Mon 8:48 am
4.6.0.371
May/29/2007
Note
sMap
27: Alpha-8MRA SPLZ
20 Hz 50 100 200 500 1K 2K 5K 10K 20K
dBSPL
65
70
75
80
85
90
95
100
105
Ohm
7
8
9
10
20
30
40
50
SPL vs Freq
Nominal Basket Diameter
Nominal Impedance*
Power Rating**
Watts
Music Program
Resonance
Usable Frequency Range
Sensitivity***
Magnet Weight
Gap Height
Voice Coil Diameter
Specification
MaterialS of conStruction
MountinG inforMation
Recommended Enclosure Volume
Sealed
Vented
Driver Volume Displaced
Overall Diameter
Baffle Hole Diameter
Front Sealing Gasket
Rear Sealing Gasket
Mounting Holes Diameter
Mounting Holes B.C.D.
Depth
Net Weight
Shipping Weight
Fs
Re
Le
Qms
Qes
Qts
Vas
Vd
Cms
BL
Mms
EBP
Xmax
Sd
Xlim
tHiele & SMall paraMeterS
*
freQuencY reSponSe & iMpedance curve
*
Recommended for pro audio and bass
guitar applications as a midrange. Sealed
basket makes this woofer independent of
enclosure design.
ALPHA-8MRA
8.0”, 203 mm
8 Ω
125 W
250 W
514 Hz
400 Hz – 4.8 kHz
100.9 dB
20 oz.
.250”, 6.4 mm
1.5”, 38 mm
514 Hz
7.32 Ω
0.34 mH
4.48
2.08
1.42
0.03 cu.ft., 0.80 liters
0.0 cc
0.01 mm/N
8.90 T-M
7 grams
247
1.60 mm
205.9 cm2
3.0 mm
N/A
N/A
0.020 cu.ft., 0.58 liters
8.22’’, 208.8 mm
7.19’’, 182.6 mm
Yes
Yes
0.22’’, 5.6 mm
7.78’’, 197.6 mm
3.25”, 82.6 mm
4.40 lbs , 2.00 kg
5.10 lbs , 2.31 kg
Copper voice coil
Polyimide former
Ferrite magnet
Vented core
Pressed steel basket with closed back
Paper cone
Paper cone edge
Solid composition paper dust cap
American Standard series
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