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





Tannoy Edinburgh TW

"Tannoy have recently (1990)redefined and upgraded their famous Prestige range of seven loudspeakers, which now comprises the Stirling TW, Edinburgh TW, GRF Memory TW, Westminster TW, Canterbury 12", Canterbury 15" and Westminster Royal. The Westminster Royal and both Canterbury models remain as before, all three retaining the Alcomax 3 versions of the famous Dual Concentric drive unit. The four models with a TW suffix differ in size and specification but all incorporate new crossover, 128 drive unit and cabinet construction technology. All the Prestige models feature solid walnut cabinets, crossbraced to reduce panel resonances and heavily damped internally to reduce the effects of standing waves. The GRF Memory is named after Guy Fountain, founder of Tannoy in the 1920s. The Prestige loudspeakers range in price from £2,000 per pair for the Stirling TW to £13,500 for the flagship of the entire Tannoy collection, the Westminster Royal."

from Gramophone

The Tannoy Edinburgh TW can be enjoyed as a charming piece of furniture - its hidden musical talents called upon when required. The hand-laid cork, solid walnut edgings and walnut veneers - combined with 18 mm particle board cabinet, rigidly cross braced and heavily internally damped - results in a loudspeaker as striking to look at as it is exciting to hear.

Behind the classic "lock and key" secured grille is the Tulip Waveguide edition of the famous 12-inch Tannoy ribbon-wound twin-magnet Dual Concentric drive unit. This is driven through gold-plated loudspeaker terminals and captive link bi-wire/normal wiring and a hard-wired time compensated crossover network. Van den Hul wiring is used throughout.

Superb bass reproduction is achieved by means of a distributed port reflex system. This gives the Edinburgh TW exceptional transient performance with a smooth low frequency output.

Treble output can be adjusted by means of two high current switch blocks-one for treble energy and one for treble roll-off. These permit the Edinburgh TW to be acoustically "tailored" to suit all environments.

Specifications

Power Rating: 110 watt RMS (380 watt peak)

Recommended Amplifier Power: 50 - 200 watt/channel

Sensitivity ( 2,83 V at 1 m): 95 dB

Maximum SPL: 115 dB at 1m for 110 watt RMS (120 dB at 1m for 300 watt peak)

Nominal Impedance: 8 ohm

Minimum Impedance: 5,5 ohm

Frequency Response: 30 Hz - 25 kHz , ±3 dB

Crossover Frequencies: 1,2 kHz

Crossover Control:

±3 dB over 1,2 kHz to 25 kHz shelving;

+2 dB to -6 dB per octave over 5 kHz to 20 kHz slope

Crossover Type: 1st order LF; 1st order HF,

Bi-wired, hard-wired, passive, low-loss, time compensated Type 1133

Driver Type: 12-inch Dual Concentric High Compliance Type 3158

Enclosure Type: Distributed port reflex

Enclosure Volume: 200 litre

Dimensions (H x W x D): 1020 x 660 x 420 mm; (1179 x 708 x 468 mm packed)

Weight: 44 kg complete (54 kg packed)

Enclosure Material: Solid walnut with 18 mm particle board, crossbracing and heavy internal damping

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