What is stereo?

There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.

H.H. Scott '59

KEF C-40

 The C40 was generous in both volume and drive unit. Bass was plentiful and extended, and the design was balanced to operate clear of room boundaries on open stands.
The two new 200mm bass/midrange units used polypropylene cones.
Operating as a 2½-way system, the lower driver was used only at the lowest frequencies, augmenting and extending bass output, substantially improving power handling capacity, and assisting bass damping. 
 The C40 is very reasonably priced for such a precisely engineered loudspeaker, considering the size of the cabnet
The system would go exceedingly loud, would handle plenty of power, and, with a generous bass delivery, was particularly suited to the cost- conscious rock listener.
Specification: C40
System Type: 2½-way, floor standing
Enclosure type: Closed box
Nominal Impedance: 8ohms
Rated maximum power: 100W programme
Frequency response: 68Hz to 20kHz +/-3dB (-6dB at 58Hz)
Sensitivity: 91dB for a pink noise input of 2.83V
Maximum output: 111dB on programme peaks under typical listening conditions
Finish: Simulated Walnut, Rosewood, Black Ash
System: SP3054
Drive units: 2 x B200 bass unit (SP1205), T33 tweeter (SP1211)
Crossover: SP2054
Size: 650 x 247 x 262mm (25.6 x 9.7 x 10.3 inches)
Weight: 9.6kg (21.1 lb)

Produced:  1985 - 88

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