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

Speaker - Jensen® Vintage Ceramic, 8", C8R, 25W image 3

Speaker - Jensen® Vintage Ceramic, 8", C8R, 25W image 4

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SKU:	P-A-C8R
Item ID:	001925

Price: $41^.08

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Watts

Size

Ohms

Type

The C8R is a 8" ferrite speaker with 25 watts of power. Crystal clear tone with brightly shining highs. It responds to overdrive distortion with a bright fuzz lead voice.

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

Bassist Description: Bright and hard

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

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

Part Numbers
Impedance	Our Part Number	UPC/EAN
4 Ω	P-A-C8R-4	8034028640049
8 Ω	P-A-C8R-8	8034028640032

RoHS Compliant

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Specifications, Files, and Documents

Sound Samples:

Now Playing: Blues Sound Sample

Blues Sound Sample00:49https://www.tubesandmore.com/sites/default/files/associated_files/c8r_blues.mp3

Clean Sound Sample00:18https://www.tubesandmore.com/sites/default/files/associated_files/c8r_clean.mp3

Country Sound Sample00:35https://www.tubesandmore.com/sites/default/files/associated_files/c8r_country.mp3

Jazz Sound Sample00:43https://www.tubesandmore.com/sites/default/files/associated_files/c8r_jazz.mp3

Metal Sound Sample00:53https://www.tubesandmore.com/sites/default/files/associated_files/c8r_metal.mp3

Overdriven Sound Sample00:18https://www.tubesandmore.com/sites/default/files/associated_files/c8r_overdriven.mp3

Rock Sound Sample00:41https://www.tubesandmore.com/sites/default/files/associated_files/c8r_rock.mp3

Product Measurements (click to expand)

Product Measurements
Basket Material		Pressed Sheet Steel
Cone Material		Paper
Depth		3.0629 in.
Diameter		8 in.
Diaphragm Area (S_D)		213.80 cm²
Dust Dome Material		Solid Paper
Equivalent Acoustic Volume (V_AS)	4 Ω version	10.30 liters
Equivalent Acoustic Volume (V_AS)	8 Ω version	11.40 liters
Flux Density		1.00 T
Force Factor (BxL)	4 Ω version	3.76 Wb/m
Force Factor (BxL)	8 Ω version	4.70 Wb/m
Inner Diameter		7.0275 in.
Linear Displacement, maximum (X_MAX)		1.00 mm
Losses Electrical Resistance (R_ES)	4 Ω version	19.00 Ω
Losses Electrical Resistance (R_ES)	8 Ω version	37.00 Ω
Magnet Assembly Depth		0.8976 in.
Magnet Assembly Diameter		3.3858 in.
Magnet Type		Ferrite
Magnetic Gap Depth		6.00 mm
Mechanical Compliance (C_MS)	4 Ω version	161.00 µm/N
Mechanical Compliance (C_MS)	8 Ω version	176.00 µm/N
Mechanical Moving Mass (M_MS)	4 Ω version	9.20 g
Mechanical Moving Mass (M_MS)	8 Ω version	9.00 g
Mechanical Q Factor (Q_MS)	4 Ω version	9.65
Mechanical Q Factor (Q_MS)	8 Ω version	10.29
Mounting Hole Bolt Circle Diameter		7.7559 in.
Mounting Hole Diameter		0.1968 in.
Musical Power		50.00 W
Nominal Overall Diameter		207.00 mm
Nominal Voice Coil Diameter		25.00 mm
Outer Diameter		8.1496 in.
Rated Power		25.00 W
Reference Efficiency (n_O)	4 Ω version	1.34 %
Reference Efficiency (n_O)	8 Ω version	1.03 %
Resonance Frequency (ƒ_S)	4 Ω version	131.00 Hz
Resonance Frequency (ƒ_S)	8 Ω version	126.00 Hz
Sensitivity @ 1W, 1m	4 Ω version	94.40 dB
Sensitivity @ 1W, 1m	8 Ω version	93.00 dB
Surround Material		Integrated Paper
Surround Treatment		Yes
Total Q Factor (Q_TS)	4 Ω version	1.42
Total Q Factor (Q_TS)	8 Ω version	1.80
Voice Coil DC Resistance (R_e)	4 Ω version	3.00 Ω
Voice Coil DC Resistance (R_e)	8 Ω version	6.73 Ω
Voice Coil Diameter		1 in.
Voice Coil Former		Kapton
Voice Coil Inductance @ 1 kHZ (L_E)	4 Ω version	0.22 mH
Voice Coil Inductance @ 1 kHZ (L_E)	8 Ω version	0.43 mH
Voice Coil Winding Depth		4.00 mm
Voice Coil Winding Type		Copper

Packaging Information
Packaging Dimensions		9.1 in. × 9.1 in. × 5.55 in.
Weight (Packaging)		2.6 lbs.

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Product Reviews

5.00 out of 5 based on 3 reviews

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.

Chad Beebe - March 21st, 2016

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5 out of 5

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

keithb7 - September 6th, 2015

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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.

Jason Thorpe - August 27th, 2015

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Questions and Answers

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25 watt rms o peak power? 2 answers

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Asked by Anonymous on August 27th, 2015.

Answers (2)

dmoberly

Staff Member

August 27th, 2015

Rated power 25 watts. Musical power 50 watts. See the specification sheet for more information

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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.

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Can i use this to repair an ampeg BA108?1 answers

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Asked by Anonymous on August 27th, 2015.

Answers (1)

dmoberly

Staff Member

August 27th, 2015

The Jensen C8R is not a bass speaker and the results, if used for bass, would not be suitable.

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I have a Roland Street Cube EX and am looking for a 25 watt - 8" - 4 ohm speaker (to replace stock speakers - same specs) that has a good bass response to play electric bass through. I can get an O.K. tone now but am looking to improve the bass response. What would you suggest? Would a 20 watt Eminence Patriot 8" Lead/Rhythm Guitar Speaker Blue/Red Star, Stripes work (reviews say it has good bass response)even though wattage is wrong or is that a bad idea? Thanks in advance for your help.1 answers

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Asked by jazzcreature on April 18th, 2017.

Answers (1)

Matt H.

Staff Member

April 19th, 2017

We do not recommend this Jensen speaker for bass. If you want to run bass and guitar out of one amp a PA speaker is a good choice. Please email us directly at: info@tubesandmore.com for more information.

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Where is this speaker made? What is the country of origin? Thank you.1 answers

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Asked by Pjalmy on September 2nd, 2017.

Answers (1)

Matt H.

Staff Member

September 6th, 2017

These speakers are made in Italy.

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Hi, I just got Ampeg G18. I need to replace speaker but there is no info 4 or 8ohm. which one should I buy it. 1 answers

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Asked by Anonymous on April 11th, 2018.

Answers (1)

Matt H.

Staff Member

April 11th, 2018

Please see our video on finding a speakers impedance: https://www.youtube.com/watch?v=4Ocgo1p8Z3Y

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I have a silvertone guitar and amp in the case.uses 2ea12ax7 tubes and 16v6gt and 1 6x4. has a Jensen c8t c7571-5 speaker .what should I use?1 answers

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Asked by Anonymous on September 29th, 2019.

Answers (1)

BradWbr

Staff Member

October 1st, 2019

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.

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