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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 Q80


 For thirty years KEF has proved to be a worthy holder of the title "The Speaker Engineers". Taime and again, highly advanced and innovative engineering techniques coupled with the most exacting attention to detail at every level and stage of production has ensured that KEF has led the world with a succession of major advances in loudspeaker design and technology. The KEF "Q" Series is no exception.


 KEF Q80
The Q80 is a floorstandig speaker of relatively compact dimensions. It is designed for the listener who needs big speaker performance without big speaker dimensions.
In addition to the 200 mm (8') Uni-Q unit, a passive rediator of the same diameter smooths, extends, and increasses bass output.Adjustable.lockable, spiked or capped feet allow the Q80 to be located firmly on the floor, with optimum stability on any surface, enabling the Uni-Q unit's outstanding imaging capability to be fully exploited.
All three Q Series models are fitted with heavy-duty twin gold-plated terminals suitable for bi-wired or bi-amplified use.
An easy 8-ohm load offers the amplifier no driving problems, and the Q80's high sensitivity allows lifelike levels of up to 110 dB, an outstanding figure for a speaker of Q80's size.



Specifiactions
Type:  2-way floor standing
System:  SP3137
Drive units: 
Bass/midrange unit (SP1280) : 200 mm (8") with 38 mm (1,5") coil (B200)
Passive radiator (SP1288) : 200 mm (8") (BD200)
Tweeter (SP1353) : Polymer dome with 25 mm (1") coil Fluid cooled, High Energy magnet Ne-Fe-B (NT25)
Crossover network:  SP2189
Frequency Range (±3 dB measured at 2m on reference axis):  57 - 20,000 Hz (-6dB 40 Hz)
Maximum Output (measured spl on programme peaks under typical listening conditions):  110 dB
Characteristic Sensitivity level:  89 dB (measured at 1m on reference axis for pink noise input of 2,83V rms[anechoic conditions])
Amplifier Requirements (into 8 ohms):  10 - 125 W
Nominal Impedance:  8 ohms
Enclosure Type:  Passive Radiator
Internal Volume:  33,8 litres (1,9 cu.ft.)
Net Weight:  14,5 kg (32 lb)
Dimensions (H x W x D):  855 x 246 x 274 mm (33,6 x 9,72 x 10,8 inch)

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