Eminence George Alessandro Signature Model 12A Guitar Speaker 40 W 16 Ohm

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Model: Eminence EGASC64B
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Nominal Basket Diameter 12", 305 mm

Nominal Impedance 16 ohms

Power Rating Watts 40 W / Music Program N/A

Resonance 88 Hz

Usable Frequency Range 80 Hz - 5.3 kHz

Sensitivity 100.5 dB 

Magnet Weight 38 oz

Gap Height 0.313", 8 mm

Voice Coil Diameter 1.75", 44.45 mm 

Resonant Frequency (fs) 88 Hz

DC Resistance (Re) 7.63

Coil Inductance (Le) 0.67 mH

Mechanical Q (Qms) 16.82

Electromagnetic Q (Qes) 0.6

Total Q (Qts) 0.58

Compliance Equivalent Volume (Vas) 44.96 liters / 1.59 cu.ft.

Peak Diaphragm Displacement Volume 83.8 cc

Mechanical Compliance of Suspension 0.12 mm/N

BL Product (BL) 13.8 T-M

Diaphragm Mass inc. Airload (Mms) 27 grams

Efficiency Bandwidth Product (EBP) 146

Maximum Linear Excursion (Xmax) -

Surface Area of Cone (Sd) 519.5 cm²

Maximum Mechanical Limit (Xlim) N/A 

Recommended Enclosure Volume
Sealed Acceptable

Vented Acceptable

Overall Diameter 12.17", 309.1 mm

Baffle Hole Diameter 10.97", 278.64 mm

Front Sealing Gasket fitted as standard

Rear Sealing N/A

Mounting Holes Diameter 0.24", 6.1 mm

Mounting Holes B.C.D. 11.75", 298.5 mm

Depth 5.13", 130.2 mm

Copper voice coil

Paper former

Ferrite magnet

Non Vented core

Pressed steel basket

Paper Cone

Paper cone edge

Solid composition felt dust cap

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