User manual TANNOY PROFILE 631

[. . . ] So successful was this invention that Guy Fountain founded a British company by the name of Tannoy, a contraction of the words 'Tantalum' and 'Alloy', and this brand name soon became internationally renowned and highly regarded in all aspects of sound reproduction. In combining the best of traditional crafts with the latest production and design skills Tannoy presents the Yorkminster SE loudspeaker. Cabinets in selected hardwoods are hand finished and polished to a standard that is unsurpassed. The speaker uses the classic Alcomax 3 version of the famous Tannoy Dual Concentric driver. This magnet system endows the Dual Concentric with an exceptional transient response and increased sensitivity. [. . . ] ¥ The spade connection at the other end of the lead should be connected to the red (positive) high frequency (HF) terminal on the loudspeaker. To do this, loosen the terminal nut sufficiently to allow insertion of the spade connector and then re-tighten the terminal nut finger-tight. ¥ Repeat this operation for the black (negative) HF and LF terminals ¥ Repeat the whole operation for the other loudspeaker For optimum performance in single wire mode, loudspeaker cable connections from the amplifier should now be made to the high frequency (HF) terminals of the loudspeaker: ¥ The positive (plus) terminal on the amplifier left channel (marked + or coloured red) must be connected to the positive HF terminal on the left speaker. The left speaker is the one on the left as you look at the stereo pair from your listening position. ¥ The negative (minus) terminal on the amplifier left channel (marked - or coloured black) must be connected to the negative HF terminal on the left speaker. Remember that the positive (+ or red) on the amplifier must be connected to the positive (+ or red) on the speaker and the negative (- or black) to negative. Select a signal source, such as a CD player; switch on the amplifier and slowly turn up the volume control to check that Please note in bi-wire mode that the link leads, which are supplied in the accessory pack, should NOT be fitted. ¥ Be sure that the amplifier is switched OFF and then prepare the two sets of cabling for each 'side' of the system separately. Label two of the cable lengths Left LF and Left HF (low frequency and high frequency) then repeat this process for the right pair. ¥ If your amplifier is not equipped with separate output terminals for bass and treble information then, at the amplifier end of the cables, twist the Left LF+ (positive) and the Left HF+ (positive) together. Connect these to the amplifier Left channel positive terminal marked + (plus) or coloured red. Polar dispersion of sound is symmetrical in both horizontal and vertical planes. By careful crossover network design the virtual acoustic sources of the high and low frequency units can be made to occupy the same point on the axis. Therefore the total sound appears to emanate from a single point source located slightly behind the drive unit. This means that the loudspeakers, when fed from a high quality stereo source, can recreate a full and accurate stereo image. Each loudspeaker is fitted with two controls located on the front baffle beneath the detachable grille. They can be used to compensate for the varied acoustic characteristics of listening rooms. The controls should be adjusted with the amplifier tone controls in the 'flat' or uncompensated position. Fully rotating the amplifier balance control, to select first one loudspeaker and then the other, is the easiest way to do this. It allows the output of the high frequency compression drive unit to be increased 6 or decreased from the linear or 'flat' position over a frequency band from approximately 1 kHz to 20kHz. 7 Yorkminster The Low Frequency Section The low frequency section of the Dual Concentric" driver has exceptional power handling and dynamic range. This is specially treated to absorb internal resonance modes Alcomax Magnet Alcomax 3 is an especially high-energy permanent magnet. The unusual iron/nickel alloy is doped with cobalt, aluminium and other rare metals to produce a magnetic material with very special properties. In other words, it magnetises to a high level and retains that unusual degree of magnetisation. [. . . ] Precision machined, low carbon steel pole pieces ensure unsaturated operation, linear flux fields and a high heat sinking capability. High power inputs can therefore be handled with minimum change of impedance due to temperature effects. A very robust, high quality, precision pressure die-cast chassis locates the whole magnet assembly and positions the moving parts with high accuracy. This provides long-term reliability and yet does not interfere with the acoustic radiation from the individual sections. 8 and consistent. [. . . ]