C12R

General Characteristics for 8Ω

Nominal Overall Diameter
306 mm
12 in
Nominal Voice Coil Diameter
25 mm
1 in
Magnet Weight
270 g
10 oz
Overall Weight
1.4 kg
3.09 lbs
Flux Density
1 T
Voice Coil Winding Depth
8 mm
0.31 in
Magnetic Gap Depth
6 mm
0.24 in

Thiele-Small Parameters for 8Ω

Voice Coil DC Resistance
RE
6.7 Ω
Resonance Frequency
ƒS
88.3 Hz
Mechanical Q Factor
QMS
18.52
Electrical Q Factor
QES
2.06
Total Q Factor
QTS
2.47
Mechanical Moving Mass
MMS
29.5 g
Mechanical Compliance
CMS
110 µm/N
Force Factor
BxL
6.24 Wb/m
Equivalent Acoustic Volume
VAS
37.5 lt.
Maximum Linear Displacement
XMAX
± 0.8 mm
Reference Efficiency
nO
1.2 %
Diaphragm Area
SD
490.9 cm2
Losses Electrical Resistance
RES
67 Ω
Voice Coil Inductance @ 1kHz
LE
0.49 mH

Constructive Characteristics for 8Ω

Magnet
Ferrite
Voice Coil Winding
Copper
Voice Coil Former
Kapton
Cone Material
Paper
Surround Material
Integrated Paper
Dust Dome Material
Felt
Basket Material
Pressed Sheet Steel
Surround Treatment
No

Electrical Characteristics for 8Ω

Nominal Impedance
8 Ω
Rated Power
25 W
Musical Power
50 W
Sensitivity@1W,1m
92.3 dB
C12R
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
Tight
Mids
Firm
Highs
Bright
Overdrive
Crunchy
Guitarist Description
Warm low and mid response with smooth/bright highs. When presented with overdrive distortion, it presents smooth crunch with low-end focus.
Bassist Description
Warm and thick
Specification Sheet
Product Dimensions
User Reviews

I used this in a 5E3 clone, and wow! What a great Tweed sound this speaker yields! With sparkling highs, authoritative mids, and tight lows, it makes my Strat spank and quack, and turns my ES-150 into a throaty monster archtop.

jsc_ltd

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

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.

Ed Byrnes