GA-SC64 12" Signature Guitar Speaker

Vintage American ceramic magnet tone approved by legendary amp builder, George Alessandro. Well-balanced from top to bottom with tight, full lows, warm mids, and warm, but open highs. Characteristics  Series Signature Model GA-SC64 Application 12" Open or Closed Back Configuration 1, 2, or 4 X 12" Low End Response Moderate Low End Shape Tight/Punchy Mid-Range Response Moderate Mid-Range Shape Warm High-End Response Moderate Volume/Power Louder Overall Coloration* Vintage American ceramic magnet tone approved by legendary amp builder, George Alessandro.  Well-balanced from top to bottom with tight, full lows, warm mids, and warm, but open highs. Break-up Modes Medium Power Range Up to 40 watts Instrument* Lead/Rhythm Guitar Genre of Music* Rock, Blues, Country SpecificationsDownload Spec Sheet SPECIFICATION Nominal Basket Diameter 12", 305 mm Nominal Impedance* 8 Ω Power Rating* Program Power N/A Watts 40 W 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 mm THIELE & SMALL PARAMETERS Resonant Frequency (fs) 88 Hz DC Resistance (Re) 7.63 Ω Coil Inductance (Le) 0.67m H 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 (Vd) 83.8 cc Mechanical Compliance of Suspension (Cms) 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) 1.23 mm Surface Area of Cone (Sd) 519.5 cm2 Maximum Mechanical Limit (Xlim) N/A MOUNTING INFORMATION Recommended Enclosure Volume Sealed Acceptable Vented Acceptable Driver Volume Displaced 0.071 cu.ft. / 2 liters Overall Diameter 12.17", 309.1 mm Baffle Hole Diameter 11.13", 282.7 mm Front Sealing Gasket Yes Rear Sealing Gasket N/A Mounting Holes Diameter 0.24", 6.1mm Mounting Holes B.C.D. 11.75", 298.5mm Depth 5.13", 130.2 mm Net Weight 7.5 lbs, 3.4 kg Shipping Weight 8.4 lbs, 3.81 kgs MATERIALS OF CONSTRUCTION Coil Construction Copper voice coil Coil Former Paper former Magnet Composition Ferrite 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 Frequency Response