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. 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. Signal handling is by gold-plated terminals with captive link bi-wire/normal wiring and a hard-wired time compensated crossover network. [. . . ] This means providing two separate sets of cables from the power amplifier to each loudspeaker and dividing the electrical signals into high current, 'slow' signals and light current, 'fast' signals. Of course, the loudspeaker must be fitted with two pairs of terminals to take the two sets of cables; your Tannoy loudspeakers are of course equipped for just this type of connection. Bi-Wiring Bi-wiring releases the full potential of the Tannoy Prestige loudspeakers. 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. 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. 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. 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. However, for ultimate fidelity the enthusiast will find it is best to use these loudspeakers with their grilles removed during listening. The large front grille is removable for access to the front panel controls. For this reason, it is beneficial to run the system at fairly high levels at normal room temperature, for approximately 20 hours to achieve best results. Tannoy Dual ConcentricTM Drive Unit with Tulip WaveGuideTM The Tannoy Dual ConcentricTM has three fundamental advantages over conventional discrete systems. [. . . ] 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. In common with all solid wood furniture, exposure to extremes of heat, cold and varying humidity will cause the wood to ease slightly. Therefore it is recommended that the loudspeaker is protected from environmental extremes to guard against any such occurrence 7 Faultfinding Tannoy loudspeakers are designed and manufactured to be reliable. 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. [. . . ]