C12R

General Characteristics: 
Nominal Overall Diameter306 mm12 in
Nominal Voice Coil Diameter25 mm1.0 in
Magnet Weight270 g10 oz
Overall Weight3.10 lbs
Flux Density1.0 T
Thiele-Small Parameters: 
Voice Coil DC ResistanceRE6.50 Ω
Resonance FrequencyƒS74.0 Hz
Mechanical Q FactorQMS21.48
Electrical Q FactorQES2.06
Total Q FactorQTS1.88
Mechanical Moving MassMMS24.6 g
Mechanical ComplianceCMS187 µm/N
Force FactorBxL5.98 Wb/m
Equivalent Acoustic VolumeVAS63.2 lt.
Maximum Linear DisplacementXMAX0.8 mm
Reference EfficiencynO1.2 %
Diaphragm AreaSD490.8 cm2
Losses Electrical ResistanceRES67 Ω
Voice Coil Inductance @ 1kHzLE0.49 mH
Constructive Characteristics: 
MagnetFerrite
Voice Coil WindingCopper
Voice Coil FormerKapton
ConePaper
SurroundIntegrated Paper
Dust DomeFelt
BasketPressed Sheet Steel
Electrical Characteristics: 
Nominal Impedance8 Ω
Rated Power25 W
Musical Power50 W
Sensitivity@1W,1m93.8
C12R
12", 25 watts, 8Ω

Warm low and mid response with smooth/bright highs. When presented with overdrive distortion, it presents smooth crunch with low-end focus.

Sound Samples:
Clean Sound Sample
Overdriven Sound Sample
Product Dimensions: 
Frequency Response Chart: 
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User Reviews

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I just replaced the original C12R in my 1962 Gibson Falcon GA19RVT with a reissue C12R, after 46 years the original was a little tired. Good move! This reissue is the ticket!!

Gabby in Hopewell, VA