User manual TANNOY PROFILE 632

[. . . ] Based around the Alcomax 3 version of the famous 15 inch Tannoy Dual ConcentricTM the Westminster Royal SE now features the benefits of signal handling by gold-plated terminals with bi-wire/normal wiring and a hard wired time compensated crossover network. This Alcomax 3 magnet system endows the Dual ConcentricTM with an exceptional transient response and increased sensitivity. The massive cabinet design conceals a complex horn loading system that gives greatly increased efficiency and a wavefront area approaching the wavefront area from real instruments. The Westminster Royal SE is effortlessly capable of the realistic reproduction of truly low frequencies and the widest dynamic range. [. . . ] Deal with each 'side' of the system separately. Label two of the cables Left LF and Left HF (low frequency and high frequency). Label two of the cables Left LF and Left HF (low frequency and high frequency). Undo the loudspeaker terminals, remove and retain the Bi-wiring links so that the same polarity terminals are no longer joined. It is essential to get the polarity correct. If your amplifier does not have separate output terminals for bass and treble then, at the amplifier end of the cable, connect the Left LF+ and HF+ cables together. Then wire to the amplifier Left channel positive terminal marked + (plus) or coloured red. Connect the Left LF- and HF- cables together to the amplifier negative terminal marked - (minus) or black. At the loudspeaker end connect the cables marked Left LF+ and LF- to the appropriate left speaker LF terminals. Connect the Left HF+ and HF- to the appropriate + and - left speaker HF terminals. Make the same connections with the Right LF and HF cables. High frequency sound radiates from the centre of the low frequency unit through a carefully designed high frequency exponential horn. Low and high frequencies are therefore fully integrated at source. It is this feature that gives the Dual ConcentricTM driver such unique sound reproduction qualities. The high frequency unit does not obstruct the low frequency unit in any way (a unique feature when compared with other so called coaxial systems). 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 a full and accurate stereo image can be recreated by the loudspeakers when fed from a high quality stereo source. The Low Frequency Section The low frequency section of the Dual ConcentricTM driver is a high compliance unit of exceptional power handling and dynamic range. The low frequency cone piston is produced from selected paper pulp. This is specially treated to absorb internal resonance modes. The completed cone is fitted with unique rigid reinforcing members to attain a very high stiffness to mass ratio thereby preserving piston action over the operating frequency range. [. . . ] To maintain the natural wood appearance it is important that only a wax of similar formulation is used. A jar of specially formulated wax is included with each loudspeaker. This wax should be applied very sparingly with a soft lint-free cloth (muslin for example) taking great care to avoid putting wax on the grille material. If necessary mask off the side grilles carefully with clean paper, tucking it in and around the sides of the grilles. [. . . ]