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 Weight3.09 lbs
Flux Density1.00 T
Voice Coil Winding Depth0.31 in.
Magnetic Gap Depth0.24 in.
Thiele-Small Parameters for 8Ω
Voice Coil DC ResistanceRE6.70 Ω
Resonance FrequencyƒS88.3 Hz
Mechanical Q FactorQMS18.52
Electrical Q FactorQES2.06
Total Q FactorQTS2.47
Mechanical Moving MassMMS29.5 g
Mechanical ComplianceCMS110 µm/N
Force FactorBxL6.24 Wb/m
Equivalent Acoustic VolumeVAS37.5 lt.
Maximum Linear DisplacementXMAX±0.80 mm
Reference EfficiencynO1.20 %
Diaphragm AreaSD490.9 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
Surround TreatmentNo
Electrical Characteristics for 8Ω
Nominal Impedance8 Ω
Rated Power25 W
Musical Power50 W
Sensitivity@1W,1m92.3 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 re-cabbed a Gibson GA15 into a custom made Mather cab modeled on Fender Deluxe 212. I used 2 C12R speakers and the sound is gigantic! The class A 15 watts from the Gibson through these speakers is beyond belief. I did use 2 Weber Beam Blockers to smooth the highs. These are fantastic speakers.

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!!