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Like some of the world's best audiophile speakers,the C851 uses an 8-inch woofer cone made from Kevlar.​ Kevlar can't stretch, so it produces clean sound with low distortion.
  • Woofer
Brand: Proficient
Model: C851
A cast magnesium woofer basket provides a non-resonant frame for the powerful woofer.Proficient's pivoting aluminium tweeter puts out low-distortion highs to complement the woofer's powerful lows.Concealed boost/cut switches let you fine-tune bass and/or treble.With 28 Hz bass response and 175 watts power handling, the C851 lets you crank up even the heaviest rock tunes all day long (if that's what you want to do).And 92 dB sensitivity means the C851 needs only about one-third as much power as a typical speaker. Includes Thin-Bezel Grilles held by Neo Magnets.
8 inch Kevlar Cone with Cast Magnesium Basket
1 inch PIVOTING Aluminium Dome
Nominal Impedence
8 Ohms
Sensitivity [email protected]
Frequency Range
28Hz - 22kHz
Power Handling
175 Watts
EQ Switches
+/- 3dB Bass & Treble
Cutout Diameter
Mounting Depth
External Diameter