Eminence GA-SC59: 12″ Alnico Guitar Speaker by George Alessandro
Circa 1959 tone in a vintage American alnico magnet design, approved by George Alessandro. Punchy lows, full lower mid grunt, and articulate chimey highs balance out this versatile and musical 12” speaker.
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SPECIFICATION | |
Nominal Basket Diameter | 12″, 305 mm |
Nominal Impedance* | 8 Ω |
Power Rating* | |
Program Power | N/A |
Watts | 40 W |
Resonance | 89 Hz |
Usable Frequency Range | 80 Hz – 5.2 kHz |
Sensitivity* | 100 dB |
Magnet Weight | 35 oz. |
Gap Height | 0.313″, 7.95 mm |
Voice Coil Diameter | 1.75″, 44 mm |
THIELE & SMALL PARAMETERS | |
Resonant Frequency (fs) | 89 Hz |
DC Resistance (Re) | 7.4 Ω |
Coil Inductance (Le) | 0.61m H |
Mechanical Q (Qms) | 19.73 |
Electromagnetic Q (Qes) | 0.63 |
Total Q (Qts) | 0.61 |
Compliance Equivalent Volume (Vas) | 41.21 liters / 1.46 cu.ft. |
Peak Diaphragm Displacement Volume (Vd) | 83.64 cc |
Mechanical Compliance of Suspension (Cms) | 0.11 mm/N |
BL Product (BL) | 13.55 T-M |
Diaphragm Mass Inc. Airload (MMs) | 28 grams |
Efficiency Bandwidth Product (EBP) | 140 |
Maximum Linear Excursion (Xmax) | 1.61 mm |
Surface Area of Cone (Sd) | 519.5 cm2 |
Maximum Mechanical Limit (Xlim) | 0 mm |
MOUNTING INFORMATION | |
Recommended Enclosure Volume | |
Sealed | Acceptable |
Vented | Acceptable |
Driver Volume Displaced | 0.079 cu.ft. / 2.24 liters |
Overall Diameter | 12.17″, 309.12 mm |
Baffle Hole Diameter | 11.13″, 282.7 mm |
Front Sealing Gasket | Yes |
Rear Sealing Gasket | Yes |
Mounting Holes Diameter | 0.24″, 6.096mm |
Mounting Holes B.C.D. | 11.75″, 298.45mm |
Depth | 6.25″, 158.75 mm |
Net Weight | 8.4 lbs, 3.81 kg |
Shipping Weight | 10.2 lbs, 4.63 kgs |
MATERIALS OF CONSTRUCTION | |
Coil Construction | Copper voice Coil |
Coil Former | Paper former |
Magnet Composition | Alnico Magnet |
Core Details | Non-vented core |
Basket Materials | Pressed steel basket |
Cone Composition | Paper cone |
Cone Edge Composition | Paper cone edge |
Dust Cap Composition | Solid composition felt dust cap |