ton’spot’ter
ton’spot’ter n. a 12” British speaker with
warm, smooth tone, once lost but not forgotten
Coloration : Very smooth and warm with a fat bottom end and highs that cut through
the mix. Warm and thick overtones
Genre : Authentic British flavor, well suited for Blues and Classic Rock
Nominal Basket Diameter 12”, 304.8mm
Nominal Impedance* 8 ohms
Power Rating** 75W
Resonance 88Hz
Usable Frequency Range*** 70Hz-5.5kHz
Sensitivity 100.7
Magnet Weight 38 oz.
Gap Height 0.312”, 7.92mm
Voice Coil Diameter 1.75”, 44.5mm
Resonant Frequency (fs) 88Hz
DC Resistance (Re) 6.76
Coil Inductance (Le) 0.47mH
Mechanical Q (Qms) 10.04
Electromagnetic Q (Qes) 0.73
Total Q (Qts) 0.68
Compliance Equivalent Volume (Vas) 39.7 liters / 1.4 cu. ft.
Peak Diaphragm Displacement Volume (Vd) 64cc
Mechanical Compliance of Suspension (Cms) 0.10mm/N
BL Product (BL) 12.7 T-M
Diaphragm Mass inc. Airload (Mms) 32 grams
Efficiency Bandwidth Product (EBP) 120
Maximum Linear Excursion (Xmax) 1.2mm
Surface Area of Cone (Sd) 519.5 cm2
Maximum Mechanical Limit (Xlim)
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 5.1”, 130mm
Net Weight 8 lbs., 3.6 kg
Shipping Weight 9.8 lbs., 4.5 kg
Copper voice coil
Paper former
Ferrite magnet
Non-vented core
Pressed steel basket
Paper Cone
Paper cone edge
Zurette dust cap
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