C12R

General Characteristics for 8Ω
Nominal Overall Diameter306 mm.12 in.
Nominal Voice Coil Diameter25 mm.1.00 in.
Magnet Weight270 g10.00 oz
Overall Weight3.10 lbs
Flux Density1.00 T
Thiele-Small Parameters for 8Ω
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 DisplacementXMAX±0.80 mm
Reference EfficiencynO1.20 %
Diaphragm AreaSD490.8 cm2
Losses Electrical ResistanceRES67.0 Ω
Voice Coil Inductance @ 1kHzLE0.49 mH
Constructive Characteristics for 8Ω
MagnetFerrite
Voice Coil WindingCopper
Voice Coil FormerKapton
Cone MaterialPaper
Surround MaterialIntegrated Paper
Dust Dome MaterialFelt
Basket MaterialPressed Sheet Steel
Electrical Characteristics for 8Ω
Nominal Impedance8 Ω
Rated Power25 W
Musical Power50 W
Sensitivity@1W,1m93.8 dB
12"
,
25 watts
  • Ohms:

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

Lows:Mids:Highs:Overdrive:
TightFirmBrightCrunchy
Warm low and mid response with smooth/bright highs. When presented with overdrive distortion, it presents smooth crunch with low-end focus.
Warm and thick
Sound Samples:
Clean Sound Sample00:18https://www.jensentone.com/sites/jensentone.com/files/sound_samples/c12r_clean_0.mp3
Overdriven Sound Sample00:19https://www.jensentone.com/sites/jensentone.com/files/sound_samples/c12r_overdriven_0.mp3
Blues Sound Sample00:49https://www.jensentone.com/sites/jensentone.com/files/sound_samples/c12r_blues.mp3
Country Sound Sample00:35https://www.jensentone.com/sites/jensentone.com/files/sound_samples/c12r_country.mp3
Jazz Sound Sample00:43https://www.jensentone.com/sites/jensentone.com/files/sound_samples/c12r_jazz.mp3
Metal Sound Sample00:55https://www.jensentone.com/sites/jensentone.com/files/sound_samples/c12r_metal.mp3
Rock Sound Sample00:41https://www.jensentone.com/sites/jensentone.com/files/sound_samples/c12r_rock.mp3
Having trouble playing our sound samples? Click here to access the files directly.

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!!