C 63C

3-way component system with a passive crossover

SKU: C 63C Categories: ,


The new reference speakers in the competition series raise the bar to a new height for fantastic sound quality. The legendary sisal woofer cones were equipped with an additional structural damping layer made of elastomer, which improves the acoustic properties yet again. The tweeter enclosure also underwent a complete overhaul. Anyone who wants to operate these loudspeakers as fully active speakers (e.g. using our new digital signal processors) can put together the system of their choice by combining the individual components.

Like the loudspeaker systems, the frequency crossovers of the components systems have also been optimized even further. Made up of the finest components, they offer, in addition to the adjustment of the tweeter level, the option of connecting a second woofer for each channel without any change in the crossover frequencies. The so-called “double woofer mode” provides for additional pressure in the kick-bass range.


  • Mid-woofer with sturdy aluminum diecast basket
  • Large coupling volumes for tweeter and midrange allow exceptionally low crossover frequency
  • Mid-woofer cone with scooped, long-fibered sisal with additional elastomer structural damping
  • Virtually compression-free conversion of the amplifier power into sound pressure
  • Lowest manufacturing tolerances and exclusive use of selected materials
  • Frequency crossover with tweeter level adjustment and double woofer mode
  • Manufactured in Germany
  • Grille included

Why Sisal?

In the precision and competition lines, Audiotec Fischer uses only diaphragms made of sisal fiber manufactured in an elaborate production process. The mechanical advantages of sisal, such as high stability and inner damping, are combined in an ideal way with lowest weight. No wonder that whe woofers equipped with sisal diaphragms display uniquely dynamic characteristics regarding fidelity, lowest distortion and high sensitivity, at the time with a linear frequency response.


Power handling RMS / max. 190 / 380 Watts
Frequency response 47 Hz – 25,000 Hz
Resonance frequency 56 Hz
Sensitivity 91 dB 1 W / 1 m
Impedance 4 Ohms
Diameter mid-woofer

Mounting depth mid-woofer

165 mm; 6.5″

67 mm; 2.64″

Diameter midrange

Mounting depth midrange

54 mm; 2.1″

29 mm; 1.14″

Diameter tweeter

Mounting depth tweeter

25 mm; 1″

21 mm; 0.83″

Delivery contents

2 x C 1T high-end tweeter incl. fitting spring

2 x C 2M high-end midrange incl. fitting spring

2 x C 6B high-end mid-woofer incl. mounting ring and grille

2 x 3-way crossover

1 x Allen key

1 x Mounting material


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