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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





B & W DM 320

DM 320; Floor-standing loudspeaker system

Model Dm320 follow in the successful tradition of B&W's 100 and 500 Series loudspeakers, incorporating features normally found in much more expensive systems to improve performance in terms of lower colouration, higher power handling and greater dynamics.

Product Summary

If greater efficiency and bass extension are called for then the DM320 with its larger

enclosure and the 3-way system comes into its own.

Equipped with two 8in bass units in a closed box configuration and the acclaimed magnetic

fluid-cooled, light-alloy domed tweeter offers an extended low frequency range with higher

sensitivity.

Technical highlights

The use of a aluminium domed tweeter immediately distinguishes the two models. The specially

created 26mm (1in) tweeter enables high power handling to cope with the heavier usage

imposed on modern hi-fi systems. Frequencies in excess of 20kHz are within its range.

Subtle changes to the cabinet such as the tweeter plate, and bevelled front edges of the cabinet,

help produce a dramatically more even frequency response. The B&W tradition of attention to

detail manifests itself other features, such as the reinforced low-frequency driven diaphragm, the

rigid die-cast chassis, and the provision for bi-wiring or bi-amplification.

Description:

3-way 3rd-order, closed box digital monitor system with bi-wiring/biamplification facility

Drive Units:

1 x 26mm high-frequency with metal dome

2 x 200mm bass/midrange with rigid die-cast chassis, reinforced polypropylene and 31mm high temperature voice coil on Kapton® former

Frequency range: -6 dB at 45 Hz and 30 kHz

Frequency Response: 60 Hz – 20 kHz ± 2dB

Reference Axis: horizontal 150 mmfrom top of cabinet

Sensitivity: 91 dB spl(2.83V 1m)

Nominal Impedance: 8 ohms

Crossover frequency: 400 Hz and 2,5 kHz

Power Handling: 25 W – 100 W into 8 ohms on unclipped programme

Internal volume: 33,4 litres

Dimensions (H x W x D): 656 x 262 x 280 mm (25,8 x 10,3 x 11 inches)

Weight: 12,3 kg (27 lbs)

Finish: Anthracite, black ash or walnut vinyl

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