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BLACK MOUNTAIN™
Vintage American voiced tone with tight lows and warm, smooth upper mid emphasis and highs. Great single note lead tone.

SPECIFICATION
Nominal Basket Diameter 12", 304.8mm
Nominal Impedance* 8 ohms
Power Rating
Watts 30W
Music Program N/A
Resonance 69Hz
Usable Frequency Range 70Hz-5.5kHz
Sensitivity*** 101.3
Magnet Weight 35 oz.
Gap Height 0.312", 7.94mm
Voice Coil Diameter 1.75", 44.45mm

THIELE & SMALL PARAMETERS
Resonant Frequency (fs) 68.58Hz
DC Resistance (Re) 6.44
Coil Inductance (Le) .62 mH
Mechanical Q (Qms) 8.13
Electromagnetic Q (Qes) 0.53
Total Q (Qts) 0.50
Compliance Equivalent Volume (Vas) 69.64 liters / 2.46 cu.ft.
Mechanical Compliance of Suspension (Cms) 0.19 mm/N
BL Product (BL) 12.07 T-M
Diaphram Mass inc. Airload (Mms) 27.8 grams
Efficiency Bandwidth Product (EBP) 129.2
Maximum Linear Excursion (Xmax) 0.8mm
Surface Area of Cone (Sd) 506.7 cm2
Maximum Mechanical Limit (Xlim) N/A

MOUNTING INFORMATION
Recommended Enclosure
Sealed Acceptable
Vented N/A
Overall Diameter 12.26", 311.4mm
Baffle Hole Diameter 11.06", 280.9mm
Front Sealing Gasket Fitted as standard
Rear Sealing Gasket Fitted as standard
Mounting Holes Diameter 0.25", 6.4mm
Mounting Holes B.C. D. 11.71", 297.4mm
Depth 5.95", 151.1mm
Net Weight 8.9 lbs, 4.04 kg
Shipping Weight 11.1 lbs, 5 kg

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 Seamed Paper Cone
Cone Edge Composition Paper cone edge
Dustcap Composition Treated paper dust cap