User manual TANNOY STIRLING

[. . . ] OWNER'S MANUAL Estd. 1926 In combining the best of traditional crafts and the latest production and design skills Tannoy presents the Stirling SE loudspeaker. The Stirling SE embodies the Tannoy philosophy. Cabinets in selected hardwoods are hand finished and polished to a standard that is unsurpassed. The Stirling SE is a compact high performance loudspeaker based around Tannoy's unique 10-inch ribbon wound Tulip WaveGuideTM twin-magnet Dual ConcentricTM. [. . . ] 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. For optimum performance, the earth connection on the terminal panel should be connected to the amplifier chassis earth or other ground point. This screening effect can give an improvement in detail clarity, depending on the amplifier used. Optimum results are achieved using a screened loudspeaker cable designed for such a system. Switch on the amplifier with the volume turned down. Select a favourite source and carefully turn up the volume. Check that bass and treble sounds come from both speakers. If not, switch off and remake the connections. Cables High quality audio signals passing from power amplifier to loudspeaker are unusual in their demands on cable. Frequencies from 20Hz to 20kHz (10 octaves or a ratio of 10, 000:1) and currents of 80dB dynamic range (again a ratio of 10, 000:1) have to coexist. The cable also has to be capable of transmitting peak currents of at least 10 Amp without causing losses greater than 0. 001 Amp (10 Amp divided by the ratio 10, 000). These strict requirements on loudspeaker cables help explain why the sound quality from loudspeakers is so dependant on the physical properties of the cables connecting them to the power amplifier. 4 FIG. 2 BI- WIRE MODE HIGH FREQUENCY NEGATIVE(-) TERMINAL HIGH FREQUENCY POSITIVE(+) TERMINAL TO RIGHT SPEAKER LOW FREQUENCY NEGATIVE(-) TERMINAL LOW FREQUENCY POSITIVE(+) TERMINAL TO 'GROUND' OR 'EARTH' CONNECTION ON AMPLIFIER (OPTIONAL) + L - + R - POWER AMPLIFIER 'EARTH' OR 'GROUND' TERMINAL LINKS REMOVED FIG. 4 BI-AMPING MODE TO RIGHT SPEAKER TO RIGHT SPEAKER +L +R HIGH FREQUENCY POWER AMPLIFIER +L +R POWER AMPLIFIER LOW FREQUENCY POWER AMPLIFIER L +- R +- TO 'GROUND' OR 'EARTH' CONNECTION ON AMPLIFIER (OPTIONAL) TO 'GROUND' OR 'EARTH' CONNECTION ON HIGH FREQUENCY AMPLIFIER (OPTIONAL) TO RIGHT SPEAKER LINKS REMOVED 5 Grille Removal Special acoustically transparent cloth is used in the grilles. [. . . ] When a fault occurs in a hi-fi system the effect is always heard through the loudspeakers although they may not be the source of the fault. It is important to trace the cause of the problem as accurately as possible. A fault heard on one source (only CD or tape for instance) is most unlikely to be a loudspeaker problem. Loudspeakers do not generate hum, hiss or rumble although high-quality, wide-bandwidth loudspeakers may emphasise such problems. Tannoy Quality An important part of Tannoy's design philosophy is to produce loudspeakers with a level of performance beyond the most exacting specifications of contemporary source equipment. [. . . ]