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





B & W CDM 1SE

CDM 1SE

Stand - mount/Bookshelf loudspeaker system


Braced cabinet construction dramatically reduces cabinet resonance by adding the twin

virtues of strength and rigidity to the cabinet walls. Gold-plated terminals permit bi-wiring

or bi-amplification.

Having the tweeter separate from the main cabinet readily allows it to be set back and

time aligned with the acoustic centre of the bass/midrange cone, which is located behind

the plane of the front baffle, and minimises the effects of diffraction from the cabinet edges.

This results in improved imaging and coherence

Technical highlight

B&W's Tweeter on top technology ensures that the sound remains focused

and time-sensitive and that the stereo image is presented with unparalleled

three dimensional accuracy.

Kevlar®: B&W developed and patented the method of using Kevlar® fo

loudspeaker cones to reduce unwanted standing waves. DuPont originally

created Kevlar® for use in bulletproof vests.

Description: 2-way 4th-order vented-box system

Drive units:

1x 165mm (6½ in) woven Kevlar®cone bass/midrange

1x 25mm (1in) alloy dome high-frequency

F requency range: -6 dB at 46 Hz and 30 kHz

F requency response: 58 Hz – 20 kHz ±3 dB on reference axis

Dispersion:

Within 2dB of response onreference axis

Horizontal: over 40° arc

Vertical: over 10° arc

Sensitivity: 88 dB spl (2.83V, 1m)

Harmonic distortion: 2nd & 3rd harmonics < 1% 100 Hz – 20 kHz (90 dB spl, 1 m)

Nominal impedance: 8 W (minimum 4.5 W)

C rossover frequency: 3 kHz

Power handling: 30W – 120W continuous into 8W on unclipped programme

Max. recommended cable impedance: 0 . 3 W

Dimensions:

Height : 370 mm (14 in)

Width : 220 mm (8 in)

Depth : 274 mm (10 in)

Net Weight: 7.0 kg (15.4 lb)

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