|Nominal Overall Diameter||207 mm||8 in|
|Nominal Voice Coil Diameter||25 mm||0.98 in|
|Magnet Weight||270 g||10 oz|
|Overall Weight||1 kg||2.2 lbs|
|Flux Density||1 T|
|Voice Coil Winding Depth||4 mm||0.16 in|
|Magnetic Gap Depth||6 mm||0.24 in|
|Voice Coil DC Resistance||RE||3 Ω||6.73 Ω|
|Resonance Frequency||ƒS||131 Hz||126 Hz|
|Mechanical Q Factor||QMS||9.65||10.29|
|Electrical Q Factor||QES||2.18|
|Total Q Factor||QTS||1.42||1.8|
|Mechanical Moving Mass||MMS||9.2 g||9 g|
|Mechanical Compliance||CMS||161 µm/N||176 µm/N|
|Force Factor||BxL||3.76 Wb/m||4.7 Wb/m|
|Equivalent Acoustic Volume||VAS||10.3 lt.||11.4 lt.|
|Maximum Linear Displacement||XMAX||± 1 mm||± 1 mm|
|Reference Efficiency||nO||1.34 %||1.03 %|
|Diaphragm Area||SD||213.8 cm2||213.8 cm2|
|Losses Electrical Resistance||RES||19 Ω||37 Ω|
|Voice Coil Inductance @ 1kHz||LE||0.22 mH||0.43 mH|
|Voice Coil Winding||Copper|
|Voice Coil Former||Kapton|
|Surround Material||Integrated Paper|
|Dust Dome Material||Solid Paper|
|Basket Material||Pressed Sheet Steel|
|Rated Power||25 W||25 W|
|Musical Power||50 W||50 W|
|Sensitivity@1W,1m||94.4 dB||93 dB|
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.
I changed the speaker in my small amp Fender LT25. To my ear I got much more pleasant lows, I can finally hear mids, and highs are still good. Now my amp is much better and it is much easier to hear the difference when I adjust basic parameters on the front panel. It can also be heard more clearly when I turn on/off compressor :) Very happy.
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.
Sounded great in a 1973 Bronco I installed it in.
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.
I did purchase a C8R 4ohm speaker to use with my kit amp: The speaker is a good match for this amp and has considerable volume capabilities.