ALPHA 5-8 5" American Standard Series Speaker

The Alpha 5 offers unmistakable performance emphasizing value. Rated at 250 watts of program power, this 5” midbass features a water-resistant cone and dust cap, making it an excellent choice for line array or column array applications.

SPECIFICATION
Nominal Basket Diameter	5", 127 mm
Nominal Impedance*	8 Ω
Power Rating*
Program Power	250 W
Watts	125 W
Resonance	87 Hz
Usable Frequency Range	87 Hz - 3.5 kHz
Sensitivity*	89.4 dB
Magnet Weight	20 oz.
Gap Height	0.23", 5.8 mm
Voice Coil Diameter	1.5", 38 mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs)	87 Hz
DC Resistance (Re)	5 Ω
Coil Inductance (Le)	0.29m H
Mechanical Q (Qms)	11.81
Electromagnetic Q (Qes)	0.56
Total Q (Qts)	0.54
Compliance Equivalent Volume (Vas)	6.14 liters / 0.22 cu.ft.
Peak Diaphragm Displacement Volume (Vd)	60.8 cc
Mechanical Compliance of Suspension (Cms)	0.42 mm/N
BL Product (BL)	6.22 T-M
Diaphragm Mass Inc. Airload (MMs)	8 grams
Efficiency Bandwidth Product (EBP)	155
Maximum Linear Excursion (Xmax)	5.92 mm
Surface Area of Cone (Sd)	102.6 cm2
Maximum Mechanical Limit (Xlim)	6.4 mm
MOUNTING INFORMATION
Recommended Enclosure Volume
Sealed	Acceptable
Vented	Acceptable
Driver Volume Displaced	1.091 cu.ft. / 30.9 liters
Overall Diameter	5.87", 149.1 mm
Baffle Hole Diameter	4.8", 121.9 mm
Front Sealing Gasket	Yes
Rear Sealing Gasket	Yes
Mounting Holes Diameter	0.2", 5mm
Mounting Holes B.C.D.	5.39", 136.9mm
Depth	2.91", 73.9 mm
Net Weight	3.1 lbs, 1.41 kg
Shipping Weight	3.5 lbs, 1.59 kgs
MATERIALS OF CONSTRUCTION
Coil Construction	Aluminum voice coil
Coil Former	Polyimide former
Magnet Composition	Ferrite magnet
Core Details	Vented core

Basket Materials	Pressed steel basket
Cone Composition	Water resistant pulp
Cone Edge Composition	Cloth cone edge
Dust Cap Composition	Water resistant paper