|Nominal Overall Diameter||306 mm||12 in|
|Nominal Voice Coil Diameter||25 mm||0.98 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|
|Voice Coil DC Resistance||RE||6.7 Ω|
|Resonance Frequency||ƒS||88.3 Hz|
|Mechanical Q Factor||QMS||18.52|
|Electrical Q Factor||QES||2.85|
|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|
|Voice Coil Winding||Copper|
|Voice Coil Former||Kapton|
|Surround Material||Integrated Paper|
|Dust Dome Material||Felt|
|Basket Material||Pressed Sheet Steel|
|Rated Power||25 W|
|Musical Power||50 W|
|[email protected],1m||92.3 dB|
Typically used in the lower powered 12” amps for studio or practice, the C12R is a clear sounding, sparkling speaker, very sensitive to the character of amplifier. When paired with a stout, rich and warm electronic design it can do wonders. Ampeg® Jets and Reverberockets are just some of the most revered amps that carried C12R as their factory choice.
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.
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!!
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.