1988 saw the first use of Uni-Q technology in the C-Series.

 

Small enough to hold in the palm of your hand, the C15 was more than capable of producing a satisfying, full range sound. Incorporating a new 110mm (5.25 inch) polymer cone bass/midrange unit and 19mm (0.75 inch) metal dome tweeter, as KEF’s entry level miniature speaker it had a heritage extending back to the celebrated Cresta of the 1960s.

 

KEF had been at the forefront in eliciting superb sound from tiny loudspeakers since the days of the first ‘mini-monitor’. The C25 was a new expression of this great tradition. Bass was provided by KEF’s new B160, a 160mm (6.5 inch) cone driver with lightweight polymer diaphragm. This bass unit plus the new 19mm (0.75 inch) tweeter produced impressive volume levels, good bass extension and uncommon accuracy. C25 was a logical choice for music lovers assembling their first high-quality audio system.
  C35 (1988-91)

C35 was a bookshelf two-way system using the new 200_19 format Uni-Q: incorporating a 200mm (8 inch) polymer cone bass/midrange unit with a 19mm (0.75 inch) fabric dome tweeter.
It is ironic that the sound of most bookshelf speakers changes when they are placed on their side, as so many bookshelves dictate. This is due to the speaker’s asymmetrical dispersion. Thanks to KEF’s new Uni-Q array the C35 achieves symmetrical dispersion both horizontally and vertically making it ideally suited to this application. In either orientation, the result is superior stereo sound throughout the listening room.   
  C55 (1988-91)

The C55 combined the type 200_19 Uni-Q array with a 200mm passive radiator in a compact two-way system with bass extension to 48Hz (-6dB). Mounted in matched die-cast housings, the passive radiator and Uni-Q array were covered by a clip on injection-moulded grille specially profiled to minimize ‘tunnel’ effects. Whilst small enough for bookshelf mounting, the C55 would perform equally well on dedicated stands. The symmetrical dispersion of the Uni-Q array means that mounting orientation, horizontal or vertical, is not critical to the sound – so the user has increased flexibility with installation.

 

 

In the C75 and 95 the Uni-Q array is a type 200_25 - comprising a 200mm (8inch) polymer cone midrange and a coincident mounted 25mm (1 inch) soft dome tweeter. In the C75 this is crossed over to a closed box loaded bass driver to create a floor-standing three way system where the traditional KEF clean and extended bass is matched to the uniform and symmetrical dispersion of the new Uni-Q array.   

 

In the C75 and 95 the Uni-Q array is a type 200_25 - comprising a 200mm (8inch) polymer cone midrange and a coincident mounted 25mm (1 inch) soft dome tweeter. The woofer and tweeter not only share the same axis, but also have their acoustic centres in the same plane. And, as both units have similar directivity in the crossover region, you experience pin-point stereo imaging with reduced tonal colouration throughout a broader area of your listening room.
From the award winning Reference Model 104/2 the C95 inherits coupled cavity bass loading which allows the efficiency of a reflex system with the superior transient behaviour of a closed box. The addition of conjugate load matching provides the amplifier with a pure resistive load with subsequent benefits in ease of drive and in exploiting the full power output of the amplifier.

 

The C200SW was a passive stereo subwoofer system designed specifically to operate with the C-Series models C15 and C25. Two matched enclosures derive their power for the existing amplifier – no additional amplification is required.
Combining the C200SW with either the C15 or C25 produces a full-range three-way system with bass response extending down to nearly 35Hz. As the C200SW relieves the C15 and C25 of the need to reproduce the lowest frequencies, the system’s overall dynamic capabilities are increased, with improved clarity and definition in the midrange.

 

In 1990, the C45 was added to the C-Series to strengthen and expand the range. It was a two-way closed box system with a 200mm (8inch) bass unit matched with the SP1260 metal dome tweeter.  

 

In 1990, the C65 was added to the C-Series to strengthen and expand the range. Based on the C45 drivers and crossover it was a two-way passive radiator system with a 200mm (8inch) bass unit, 200 mm passive radiator, matched with the SP1260 metal dome tweeter.  

 

In 1990, the C85 was added to the C-Series to strengthen and expand the range. It was a three-way ported system with a 200mm (8inch) bass driver and a type 200_25 Uni-Q array.

 

Specification: C15
System Type: Two-way, bookshelf/stand-mount
Enclosure type: Closed box
Size: 265 x 180 x 150mm (10.4 x 7.1 x 5.9 inches)
Weight: 3.2kg (7 lb)
Nominal Impedance: 4ohms
Rated maximum power: 80W programme (into 4 ohms)
Frequency response: 68Hz to 20kHz +/-3dB (-6dB at 57Hz)
Sensitivity: 85dB for a pink noise input of 2.83V (anechoic conditions)
Maximum output: 100dB on programme peaks under typical listening conditions
System: SP3091
Drive units: B110 bass unit (SP1234), 19mm tweeter (SP1241)
Crossover: SP2131
System: SP3091
Drive units: B110 bass unit (SP1234), 19mm tweeter (SP1241)
Crossover: SP2144
System: SP3091
Drive units: B110 bass unit (SP1234), 19mm tweeter (SP1254)
Crossover: SP2144
New Graphic:
System: SP3127
Drive units: B110 bass unit (SP1234), 19mm tweeter (SP1254)
Crossover: SP2144
System: SP3127
Drive units: B110 bass unit (SP1234), 19mm tweeter (SP1241)
Crossover: SP2144

 

Specification: C25
System Type: Two-way, bookshelf/stand-mount
Enclosure Type: Closed box
Size: 340 x 205 x 175mm (13.4 x 8.1 x 6.9 inches)
Weight: 4.1kg (9 lb)
Nominal Impedance: 4ohms
Rated maximum power: 110W programme (into 4 ohms)
Frequency response: 65Hz to 20kHz +/-3dB (-6dB at 55Hz)
Sensitivity: 87dB for a pink noise input of 2.83V (anechoic conditions)
Maximum output: 106dB on programme peaks under typical listening conditions
System: SP3092
Drive units: B160 bass unit (SP1235), 19mm tweeter (SP1241)
Crossover: SP2132
System: SP3092
Drive units: B160 bass unit (SP1235), 19mm tweeter (SP1241)
Crossover: SP2145
System: SP3092
Drive units: B160 bass unit (SP1235), 19mm tweeter (SP1255)
Crossover: SP2145
New Graphic:
System: SP3126
Drive units: B160 bass unit (SP1235), 19mm tweeter (SP1255)
Crossover: SP2145
System: SP3126
Drive units: B160 bass unit (SP1235), 19mm tweeter (SP1255)
Crossover: SP2141

 

Specification: C35
System Type: Two-way, bookshelf/stand-mount
Enclosure Type: Closed box
Size: 376 x 246 x 206mm (14.8 x 9.7 x 8.1 inches)
Weight: 4.8kg (10.6 lb)
Nominal Impedance: 4ohms
Rated maximum power: 150W programme (into 4 ohms)
Frequency response: 64Hz to 20kHz +/-3dB (-6dB at 54Hz)
Sensitivity: 88dB for a pink noise input of 2.83V (anechoic conditions)
Maximum output: 108dB on programme peaks under typical listening conditions
System: SP3093
Drive units: B200 bass unit (SP1242), NT19 tweeter (SP1239)
Crossover: SP2133

 

Specification: C55
System Type: Two-way, bookshelf/stand-mount
Enclosure type: Passive radiator  
Size: 479 x 246 x 256mm (18.9 x 9.7 x 10.1 inches)
Weight: 7.2kg (15.8 lb)
Nominal Impedance: 4ohms
Rated maximum power: 150W programme (into 4 ohms)
Frequency response: 60Hz to 20kHz +/-3dB (-6dB at 48Hz)
Sensitivity: 90dB for a pink noise input of 2.83V (anechoic conditions)
Maximum output: 109dB on programme peaks under typical listening conditions
System: SP3094
Drive units: B200 bass unit (SP1243), BD200 passive radiator (SP1236), NT19 tweeter (SP1239)
Crossover: SP2134

 

Specification: C75
System Type: Three-way, floor standing  
Enclosure type: Closed Box  
Size: 720 x 246 x 256mm (28.4 x 9.7 x 10.1 inches)
Weight: 12.9kg (28.4 lb)
Nominal Impedance: 4ohms
Rated maximum power: 150W programme (into 4 ohms)
Frequency response: 57Hz to 20kHz +/-3dB (-6dB at 47Hz)
Sensitivity: 91dB for a pink noise input of 2.83V (anechoic conditions)
Maximum output: 112dB on programme peaks under typical listening conditions
System: SP3095 (Vinyl finish), SP3096 (veneer)
Drive units: B200 bass unit (SP1237), B200 midrange unit (SP1244), NT25 tweeter (SP1240)
Crossover: SP2135

 

Specification: C95
System Type: Three-way, floor standing  
Enclosure type: Coupled cavity  
Size: 870 x 246 x 316mm (34.3 x 9.7 x 12.4 inches)
Weight: 18.9kg (41.6 lb)
Nominal Impedance: 4ohms resistive
Rated maximum power: 250W programme (into 4 ohms)
Frequency response: 50Hz to 20kHz +/-3dB (-6dB at 39Hz)
Sensitivity: 90dB for a pink noise input of 2.83V (anechoic conditions)
Maximum output: 112dB on programme peaks under typical listening conditions
System: SP3097
Drive units: B200 bass unit (SP1238), B200 midrange unit (SP1245) and NT25 tweeter (SP1240)
Crossover: SP2136, 2137, 2138

 

Specification: C200SW (each channel):
System Type: Stereo floor-standing passive subwoofer
Enclosure Type: Coupled cavity
Size: 487 x 249 x 249mm (19.25 x 9.75 x 9.75 inches)
Weight: 7.7kg (17 lb)
Nominal Impedance: 4ohms
Rated maximum power: 150W programme (into 4 ohms)
Frequency response: 40Hz to 120kHz +/-3dB  
Sensitivity: 87dB at 1m for a pink noise input of 2.83V (92dB if corner located)
Maximum output: 107dB on programme peaks under typical listening conditions (112dB if corner located)
System: SP3110
Drive units: B200 bass unit (SP1238)
Crossover: SP2154

 

Specification: C45
System Type: Two-way bookshelf/stand-mount
Enclosure Type: Closed box
Dimensions (H x W x D): 475x280x240mm (18.7 x 11 x 9.5in.)
Weight: 8.5kg (18.7 lbs)
System: SP3115
Drive units: B200 bass unit (SP1259), 19mm tweeter (SP1260)
Crossover: SP2158
New Graphic:
System: SP3125
Drive units: B200 bass unit (SP1259), 19mm tweeter (SP1260)
Crossover: SP2158
System: SP3125
Drive units: B200 bass unit (SP1259), 19mm tweeter (SP1241)
Crossover: SP2158

 

Specification: C65
System Type: Two-way, floor standing
Enclosure Type: Passive radiator
System: SP3120
Drive units: B200 bass unit (SP1259), BD200 passive radiator (SP1266), 19mm tweeter (SP1241)
Crossover: SP2158

 

Specification: C85
System Type: Three-way, floor standing
Enclosure Type: bass reflex
Dimensions (H x W x D): 880x250x320mm (34.6 x 9.84 x 12.6in.)
Weight: 19kg (41.8 lbs)
System: SP3121
Drive units: B200 bass unit (SP1264), B200 midrange unit (SP1267), NT25 tweeter (SP1262)
Crossover: SP2136 and 2168

 

Download C15 C25 C35 C55 C75 C95 Brochure
Download C15 C25 C45 C65 C200SW Brochure
Download C200SW Brochure
Download C15 C25 Installation Instructions
Download C35 C55 C75 C95 Installation Instructions
Download C200SW Installation instructions