General Characteristics
Nominal Overall Diameter 259 mm 10 in
Nominal Voice Coil Diameter 25 mm 0.98 in
Magnet Weight 270 g 10 oz
Overall Weight 1.2 kg 2.65 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
Nominal Impedance
Voice Coil DC Resistance RE 6.7 Ω
Resonance Frequency ƒS 96.6 Hz
Mechanical Q Factor QMS 9
Electrical Q Factor QES 1.76
Total Q Factor QTS 1.47
Mechanical Moving Mass MMS 17.6 g
Mechanical Compliance CMS 154 µm/N
Force Factor BxL 6.42 Wb/m
Equivalent Acoustic Volume VAS 23.8 lt.
Maximum Linear Displacement XMAX ± 0.8 mm
Reference Efficiency nO 1.5 %
Diaphragm Area SD 330.1 cm2
Losses Electrical Resistance RES 42 Ω
Voice Coil Inductance @ 1kHz LE 0.53 mH
Constructive Characteristics
Magnet Ferrite
Voice Coil Winding Copper
Voice Coil Former Kapton
Cone Material Paper
Surround Material Integrated Paper
Dust Dome Material Solid Paper
Basket Material Pressed Sheet Steel
Surround Treatment Yes
Electrical Characteristics
Nominal Impedance
Rated Power 25 W
Musical Power 50 W
Sensitivity@1W,1m 93.6 dB
25 watts
Available in 8Ω

Developed as the ceramic version of the P10R, for low-powered studio amps, the C10R is revered for having been the speaker of the Blackface Princeton®, the Princeton Reverb® and many others. The combination of the warm sounding circuit of the Princeton and the bright, colorful tone of the C10R delivers magical tones in any recording session.

Guitarist Description
Colorful bell-like chime which transitions into a gritty response when presented with overdrive distortion.
Specification Sheet
Product Dimensions
Note: all dimensions are in mm.
User Reviews
I used for a long time 12 inch speakers, Jensen as well as Celestion. Jensen stays my favorite speaker. Celestions sound muddy around the 160 -200Hz, and this is not the case with Jensens speaker. I use mostly the Alnico P10R only for the typical Alnico sound. When I tried the C10R , I very surprised how good they sound. Bass notes are much cleaner with 10" speakers. Now , Celestions are collecting dust. Jensens for ever.
Maraia C

The new Jensen C10R was exactly what I wanted. I replaced the speaker in my 68 Princeton Reverb reissue and it's perfect.


I have a Jensen C10R in my Silverface 1970 Fender Princeton. It gives me a great sound clean or with overdrive. I highly recommend this speaker.


I purchased two Mod 12-50 's, one Mod 10-35 , and one C10R . I have them in a birch, slant back cab with the two 12" diagonal to one another and the two 10" diagonal to each other . I love the dynamics of this combination of speakers when playing through a tube amp head. I think it sounds better with the EL-84 head than with the 6V6 head.

Scott in Syracuse, NY

I purchased 4 Jensen C10Rs to replace JBLs that were in a 1970 Super reverb I recently acquired. It was way too heavy with the JBLs, so I sold the JBLs for mucho dinero and replaced with the Jensens. I also have a 1966 Super Reverb (my amp for 20 years!) with another brand replacement speakers for comparison. The C10Rs were perfect for the Super -good full tone, nice and chimey - my idea of a perfect Super Reverb tone! Give these serious consideration for Fender replacements - they are much nicer than the price would indicate.

Chuck P of Phildelphia, PA

I purchased a Jensen C10R. Wow, amazing! it made the replaced speaker sound like a toy. also the quality and workmanship was flawless...I finally have the tone I've been looking for. thank you.

Brian in West Palm Beach , FL

I've been playing guitar for 42 years, and have been playing in bands for 32 years. I bought several Jensen C10R speakers for two Fender Princeton Reverbs, one Fender Princeton, and one Fender Pro Jr. I have gigged with all of these amps. This speaker makes a 12 watt Fender Princeton Reverb loud enough to gig with. The C10R sounds much better than many of those high dollar boutique speakers I've tried. The C10R was very full sounding right out of the box. It took all of my amps to a different level. Clean or distorted - it sounds very even without a hint of harshness. Don't let the small magnet fool you - this speaker takes low guitar notes without a problem. The smaller magnet also makes the amp easier to transport.

Bill in Fresno, CA