Eminence Alpha 10 Speaker (150 Watts, 10 in.)

Ideal for 2-way sound reinforcement systems, keyboards, guitar combos.

Features:

Kapton coil former

Ferrite magnet

Pressed steel basket

Polyamide-imide coated copper voice coil

Paper cone/cloth cone edge

Solid composition paper dust cap

Technical Info

Nominal Basket Diameter: 10 in., 254mm

Impedance: 8 ohm

Power Rating: 150W rms

Music Program: 300W

Resonance: 50Hz

Usable Frequency Range: 45Hz - 5kHz

Average Sensitivity: 1W @ 1m 97 dB

Magnet Weight: 20oz.

Gap Height: 0.25 in., 6.35mm

Voice Coil Diameter: 1.5 in., 38.1mm

Mounting Information

Overall Diameter: 10.11 in., 256.8mm

Baffle Hole Diameter: 9.13 in., 231.8mm

Front Sealing Gasket: fitted as standard

Rear Sealing Gasket: fitted as standard

Mounting Holes Diameter: 0.225 in., 5.7mm

Mounting Hole B.C.D.: 9.6 in., 243.8mm

Depth: 3.90 in., 99mm

Shipping Weight: 5.8 lbs., 2.6 kg

Thiele-Small Parameters

Resonant Frequency: 50Hz

Impedance (RE): 5.31 ohm

Coil Inductance (Le): 0.66mH

Electromagnetic Q (Qes): 0.66

Mechanical Q (Qms): 5.21

Total Q (Qts): 0.59

Compliance Equivalent Volume (Vas): 82.2 liters, 2.9 cu. ft.

Peak Diaphragm Displacement Volume (Vd): 113cc

Mechanical Compliance of Suspension (Cms): 0.46mm/N

BL Product (BL): 7.5 T-M

Diaphragm Mass inc. Airload (Mms): 22 grams

Equiv. Resistance of Mechanical Suspension Loss (Rms): 1.33N*sec/M

Efficiency Bandwidth Product (EBP) 75

Voice Coil Overhang (Xmax) 3.2mm

Surface Area of Cone (Sd) 355.4cm2

Impedance at Resonance (Zmax) 47 ohm

Important Note
Watts:
The guaranteed long term power rating throughout the usable frequency range of the speaker.

(Translation: the speaker will operate continuously at any frequency within the speakers specified frequency range when driven at this power. The "Watts" rating is similar to RMS, but is really more indicative of long term thermal capability.)

Music Program:
The speaker will safely and reliably handle the varying frequencies of musical content at this power rating. The "Music Program" rating is more indicative of what you can expect in the real world with the speaker operating within the appropriate enclosure reproducing music or vocal audio program.