THE TONKER™
150 Watt / 8 Ohm / 12"

tonker n. a hard-hitting 12" speaker with British flavor and harmonic balance

Coloration : A very fat, clean and warm tone through the mid-range, smooth top end

Genre : English Rock, Southern Rock, Country (Great with a Telecaster)


Specification
Nominal Basket Diameter 12", 304.8mm
Nominal Impedance* 8 ohms
Power Rating** 150W
Resonance 89Hz
Usable Frequency Range*** 70Hz-5.5kHz
Sensitivity 102
Magnet Weight 59 oz.
Gap Height 0.312", 7.92mm
Voice Coil Diameter 2", 50.8mm

Thiele & Small Parameters
Resonant Frequency (fs) 89Hz
DC Resistance (Re) 7.36
Coil Inductance (Le) 0.47mH
Mechanical Q (Qms) 10.02
Electromagnetic Q (Qes) 0.49
Total Q (Qts) 0.47
Compliance Equivalent Volume (Vas) 34.1 liters / 1.2 cu. ft.
Peak Diaphragm Displacement Volume (Vd) 42cc
Mechanical Compliance of Suspension (Cms) 0.09mm/N
BL Product (BL) 17.4 T-M
Diaphragm Mass inc. Airload (Mms) 36 grams
Efficiency Bandwidth Product(EBP) 181
Maximum Linear Excursion (Xmax) 0.8mm
Surface Area of Cone (Sd) 519.5 cm2
Maximum Mechanical Limit (Xlim)


Mounting Information
Recommended Enclosure Volume
Sealed Acceptable
Vented Acceptable
Overall Diameter 12.02", 305.3mm
Baffle Hole Diameter 10.97", 278.6mm
Front Sealing Gasket fitted as
Rear Sealing Gasket fitted as
Mounting Holes Diameter 0.25", 6.4mm
Mounting Holes B.C.D. 11.63", 295.4mm
Depth 5.2", 132mm
Net Weight 11.1 lbs., 5 kg
Shipping Weight 13.2 lbs., 6 kg

Materials of Construction
Copper voice coil
Polyimide former
Ferrite magnet
Non-vented core
Pressed steel basket
Paper Cone
Paper cone edge
Zurette dust cap