Speaker - Jensen® Vintage Ceramic, 8", C8R, 25W

Speaker - Jensen® Vintage Ceramic, 8", C8R, 25W

Jensen
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$41.08
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The C8R is the little gem in the Jensen Vintage series. It delivers a solid compact tone that defies its size. Extremely versatile, it finds application in small home and student amplifiers; but with a microphone in front, it is capable of transferring on tape some of the biggest tones ever. Not by chance, the vintage Fender® Champ® amplifiers produced with the C8R speaker are treasured by many players as a great studio tool.

Guitarist Description: Crystal clear tone with brightly shining highs. Responds to overdrive distortion with a bright fuzz lead voice.

  • Lows: Tight
  • Mids: Aggressive
  • Highs: Bright
  • Overdrive: Edgy

For more information about our Jensen® speakers, see our tech corner article on Jensen Speakers.

SKU:
P-A-C8R
Item ID:
001925
Brand:
JensenJensen VintageCeramic
Magnet Type:
Size:
RoHS Compliant
Part Numbers
ImpedanceOur Part NumberUPC/EANJensen Part Number
4 ΩP-A-C8R-48034028640049 ZJ04030
8 ΩP-A-C8R-88034028640032 ZJ04020
Product Measurements by Type
Basket MaterialPressed Sheet Steel
Cone MaterialPaper
Depth3.0629 in.
Diameter8 in.
Diaphragm Area (SD)213.80 cm2
Dust Dome MaterialSolid Paper
Equivalent Acoustic Volume (VAS)4 Ω versionP-A-C8R-410.30 liters
8 Ω versionP-A-C8R-811.40 liters
Flux Density1.00 T
Force Factor (BxL)4 Ω versionP-A-C8R-43.76 Wb/m
8 Ω versionP-A-C8R-84.70 Wb/m
Inner Diameter7.0275 in.
Linear Displacement, maximum (XMAX)1.00 mm
Losses Electrical Resistance (RES)4 Ω versionP-A-C8R-419.00 Ω
8 Ω versionP-A-C8R-837.00 Ω
Magnet Assembly Depth0.8976 in.
Magnet Assembly Diameter3.3858 in.
Magnet TypeFerrite
Magnetic Gap Depth6.00 mm
Mechanical Compliance (CMS)4 Ω versionP-A-C8R-4161.00 µm/N
8 Ω versionP-A-C8R-8176.00 µm/N
Mechanical Moving Mass (MMS)4 Ω versionP-A-C8R-49.20 g
8 Ω versionP-A-C8R-89.00 g
Mechanical Q Factor (QMS)4 Ω versionP-A-C8R-49.65
8 Ω versionP-A-C8R-810.29
Mounting Hole Bolt Circle Diameter7.7559 in.
Mounting Hole Diameter0.1968 in.
Musical Power50.00 W
Nominal Overall Diameter207.00 mm
Nominal Voice Coil Diameter25.00 mm
Outer Diameter8.1496 in.
Rated Power25.00 W
Reference Efficiency (nO)4 Ω versionP-A-C8R-41.34 %
8 Ω versionP-A-C8R-81.03 %
Resonance Frequency (ƒS)4 Ω versionP-A-C8R-4131.00 Hz
8 Ω versionP-A-C8R-8126.00 Hz
Sensitivity @ 1W, 1m4 Ω versionP-A-C8R-494.40 dB
8 Ω versionP-A-C8R-893.00 dB
Surround MaterialIntegrated Paper
Surround TreatmentYes
Total Q Factor (QTS)4 Ω versionP-A-C8R-41.42
8 Ω versionP-A-C8R-81.80
Voice Coil DC Resistance (Re)4 Ω versionP-A-C8R-43.00 Ω
8 Ω versionP-A-C8R-86.73 Ω
Voice Coil Diameter1 in.
Voice Coil FormerKapton
Voice Coil Inductance @ 1 kHZ (LE)4 Ω versionP-A-C8R-40.22 mH
8 Ω versionP-A-C8R-80.43 mH
Voice Coil Winding Depth4.00 mm
Voice Coil Winding TypeCopper
Packaging Information
Packaging Dimensions9.1 in. × 9.1 in. × 5.55 in.
Weight (Packaging)2.6 lbs.
Product Measurements by Item
P-A-C8R-4 - 4 Ω versionBasket MaterialPressed Sheet Steel
Cone MaterialPaper
Depth3.0629 in.
Diameter8 in.
Diaphragm Area (SD)213.80 cm2
Dust Dome MaterialSolid Paper
Equivalent Acoustic Volume (VAS)10.30 liters
Flux Density1.00 T
Force Factor (BxL)3.76 Wb/m
Inner Diameter7.0275 in.
Linear Displacement, maximum (XMAX)1.00 mm
Losses Electrical Resistance (RES)19.00 Ω
Magnet Assembly Depth0.8976 in.
Magnet Assembly Diameter3.3858 in.
Magnet TypeFerrite
Magnetic Gap Depth6.00 mm
Mechanical Compliance (CMS)161.00 µm/N
Mechanical Moving Mass (MMS)9.20 g
Mechanical Q Factor (QMS)9.65
Mounting Hole Bolt Circle Diameter7.7559 in.
Mounting Hole Diameter0.1968 in.
Musical Power50.00 W
Nominal Overall Diameter207.00 mm
Nominal Voice Coil Diameter25.00 mm
Outer Diameter8.1496 in.
Rated Power25.00 W
Reference Efficiency (nO)1.34 %
Resonance Frequency (ƒS)131.00 Hz
Sensitivity @ 1W, 1m94.40 dB
Surround MaterialIntegrated Paper
Surround TreatmentYes
Total Q Factor (QTS)1.42
Voice Coil DC Resistance (Re)3.00 Ω
Voice Coil Diameter1 in.
Voice Coil FormerKapton
Voice Coil Inductance @ 1 kHZ (LE)0.22 mH
Voice Coil Winding Depth4.00 mm
Voice Coil Winding TypeCopper
P-A-C8R-8 - 8 Ω versionBasket MaterialPressed Sheet Steel
Cone MaterialPaper
Depth3.0629 in.
Diameter8 in.
Diaphragm Area (SD)213.80 cm2
Dust Dome MaterialSolid Paper
Equivalent Acoustic Volume (VAS)11.40 liters
Flux Density1.00 T
Force Factor (BxL)4.70 Wb/m
Inner Diameter7.0275 in.
Linear Displacement, maximum (XMAX)1.00 mm
Losses Electrical Resistance (RES)37.00 Ω
Magnet Assembly Depth0.8976 in.
Magnet Assembly Diameter3.3858 in.
Magnet TypeFerrite
Magnetic Gap Depth6.00 mm
Mechanical Compliance (CMS)176.00 µm/N
Mechanical Moving Mass (MMS)9.00 g
Mechanical Q Factor (QMS)10.29
Mounting Hole Bolt Circle Diameter7.7559 in.
Mounting Hole Diameter0.1968 in.
Musical Power50.00 W
Nominal Overall Diameter207.00 mm
Nominal Voice Coil Diameter25.00 mm
Outer Diameter8.1496 in.
Rated Power25.00 W
Reference Efficiency (nO)1.03 %
Resonance Frequency (ƒS)126.00 Hz
Sensitivity @ 1W, 1m93.00 dB
Surround MaterialIntegrated Paper
Surround TreatmentYes
Total Q Factor (QTS)1.80
Voice Coil DC Resistance (Re)6.73 Ω
Voice Coil Diameter1 in.
Voice Coil FormerKapton
Voice Coil Inductance @ 1 kHZ (LE)0.43 mH
Voice Coil Winding Depth4.00 mm
Voice Coil Winding TypeCopper

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Specifications, Files, and Documents

Sound Samples:

PDF: Specification Sheet Specification Sheet182.17 KB
PNG: Terminal Dimensions Terminal Dimensions21.21 KB

Questions and Answers

Click each question to see its answers.
Asked by Anonymous on August 27th, 2015.
dmoberly
August 27th, 2015
Staff Member
Rated power 25 watts. Musical power 50 watts. See the specification sheet for more information
Anonymous
May 19th, 2016
Specification sheet missing basic operating parameters. Peak power is the max power handling capability (in watts) at any instant of time. RMS (root mean square)max power handling capability (in watts) is the amount of continuous power. Since this is not identified, the "25 watt" power rating statement means nothing at all and does not identify the speakers power rating.
Asked by Anonymous on August 27th, 2015.
dmoberly
August 27th, 2015
Staff Member
The Jensen C8R is not a bass speaker and the results, if used for bass, would not be suitable.
Asked by Pjalmy on September 2nd, 2017.
Matt H.
September 6th, 2017
Staff Member
These speakers are made in Italy.
Asked by Anonymous on April 11th, 2018.
Matt H.
April 11th, 2018
Staff Member
Please see our video on finding a speakers impedance: https://www.youtube.com/watch?v=4Ocgo1p8Z3Y
Asked by Anonymous on September 29th, 2019.
BradWbr
October 1st, 2019
Staff Member
Any 8" instrument speaker should work provided that the ohm rating is correct and the amp cabinet has sufficient room for the depth of the speaker.

Product Reviews

5.00 out of 5 based on 3 reviews
- March 21st, 2016
5 out of 5

I was a little hesitant that this speaker would work for my unique application. I'm not using it for a guitar amp but as a replacement speaker for a 1948 AM/FM/Phono radio that the original 10" speaker was missing. It turns out this speaker works great. I went with the 8" version instead of a bigger one to get a greater frequency range and am glad I did.

This thing rocks even though the tube amp is only putting out 5w.

- September 6th, 2015
5 out of 5

Sounded great in a 1973 Bronco I installed it in. 4 ohm version.

- August 27th, 2015
5 out of 5

I used two of these speakers (8 ohm in parallel) in a clone of the Magnatone Melodier 109 that I built. They turned out to be a perfect match for the self-split push-pull circuit. They have a rich sound when played clean, and they handle the output-tube distortion that the amp produces beautifully. Absolutely perfect for blues. And the price is right! My go-to 8" speaker.