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Speaker - Jensen® Vintage Ceramic, 12", C12R, 25W, 8Ω
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.
Guitarist Description: 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
For more information about our Jensen® speakers, see our tech corner article on Jensen Speakers.
SKU:
P-A-C12R-8
Item ID:
001921
UPC/EAN:
8034028640346
Jensen Part Number:
ZJ06090
Brand:
JensenJensen VintageCeramic
Magnet Type:
Ohms:
Size:
Type:
RoHS Compliant
| Basket Material | Pressed Sheet Steel | |
| Cone Material | Paper | |
| Depth | 4.3661 in. | |
| Diameter | 12 in. | |
| Diaphragm Area (SD) | 490.90 cm2 | |
| Dust Dome Material | Felt | |
| Equivalent Acoustic Volume (VAS) | 37.50 liters | |
| Flux Density | 1.00 T | |
| Force Factor (BxL) | 6.24 Wb/m | |
| Inner Diameter | 10.9055 in. | |
| Linear Displacement, maximum (XMAX) | 0.80 mm | |
| Losses Electrical Resistance (RES) | 67.00 Ω | |
| Magnet Assembly Diameter | 3.3858 in. | |
| Magnet Type | Ferrite | |
| Magnetic Gap Depth | 6.00 mm | |
| Mechanical Compliance (CMS) | 110.00 µm/N | |
| Mechanical Moving Mass (MMS) | 29.50 g | |
| Mechanical Q Factor (QMS) | 18.52 | |
| Mounting Hole Bolt Circle Diameter | 11.5551 in. | |
| Mounting Hole Diameter | 0.2559 in. | |
| Musical Power | 50.00 W | |
| Nominal Overall Diameter | 306.00 mm | |
| Nominal Voice Coil Diameter | 25.00 mm | |
| Outer Diameter | 12.0275 in. | |
| Rated Power | 25.00 W | |
| Reference Efficiency (nO) | 1.20 % | |
| Resonance Frequency (ƒS) | 88.30 Hz | |
| Sensitivity @ 1W, 1m | 92.30 dB | |
| Surround Material | Integrated Paper | |
| Surround Treatment | No | |
| Total Q Factor (QTS) | 2.47 | |
| Voice Coil DC Resistance (Re) | 6.70 Ω | |
| Voice Coil Diameter | 1 in. | |
| Voice Coil Former | Kapton | |
| Voice Coil Inductance @ 1 kHZ (LE) | 0.49 mH | |
| Voice Coil Winding Depth | 8.00 mm | |
| Voice Coil Winding Type | Copper |
| Packaging Dimensions | 13.3858 in. × 13.3858 in. × 6.6929 in. | |
| Weight (Packaging) | 4 lbs. |
 Specification Sheet | All Models |
 Blues Sound Sample | All Models |
| Clean Sound Sample | All Models |
| Country Sound Sample | All Models |
| Jazz Sound Sample | All Models |
| Metal Sound Sample | All Models |
| Overdriven Sound Sample | All Models |
| Rock Sound Sample | All Models |
 Terminal Dimensions | All Models |
My Project Lists
Specifications, Files, and Documents
Sound Samples:
Blues Sound Sample00:49https://www.amplifiedparts.com/sites/default/files/associated_files/c12r_blues.mp3
Clean Sound Sample00:18https://www.amplifiedparts.com/sites/default/files/associated_files/c12r_clean.mp3
Country Sound Sample00:35https://www.amplifiedparts.com/sites/default/files/associated_files/c12r_country.mp3
Jazz Sound Sample00:43https://www.amplifiedparts.com/sites/default/files/associated_files/c12r_jazz.mp3
Metal Sound Sample00:55https://www.amplifiedparts.com/sites/default/files/associated_files/c12r_metal.mp3
Overdriven Sound Sample00:19https://www.amplifiedparts.com/sites/default/files/associated_files/c12r_overdriven.mp3
Rock Sound Sample00:41https://www.amplifiedparts.com/sites/default/files/associated_files/c12r_rock.mp3
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Terminal Dimensions Questions and Answers
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1 answers
I have a 1970 s/f fender deluxe reverb. What is the replacement speaker? The Jensen 12R or 12Q?
Asked by Anonymous on June 30th, 2017.
Many of the older Deluxe's had Oxford's and not Jensen's. Either speaker will work and the C12Q is 10 watts louder at 35 watts.
1 answers
I have a 1990s Peavey Bravo. (8 ohm, 25 watt) Which speaker is a better replacement -- C12N or C12R? Thanks
Asked by Anonymous on March 15th, 2018.
Typically you want to have a speaker that is higher in wattage than your amp. With that in mind, I would recommend the C12N.
1 answers
I've read that it's recommended to use a speaker of a higher wattage than the amp it's in. Do I risk damaging the speaker if the wattages are equal? (25 watt amp with the 25 watt C12R.)
Asked by Anonymous on July 16th, 2022.
July 18th, 2022
Staff Member
As a general rule, we advise doubling the wattage of the amp with the speaker. (example: a 50W speaker in a 25W amp) Playing a 25W amp with a 25W speaker in it at higher volumes could potentially damage the speaker.
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