User manual TANNOY PROFILE 636

[. . . ] Signal handling is by gold-plated terminals with captive link bi-wire/normal wiring and a hard-wired time compensated crossover network. The Stirling SE offers high frequency energy tailoring through a high current gold-plated switch block. Silver plated copper Van den Hul wiring is used throughout, together with specially selected high quality crossover components. The specially designed twin-roll impregnated fabric surround used on the drive unit's cone, ensures midrange purity combined with tight, controlled bass. Tannoy - A Short History In the early days of broadcasting radio sets needed both low and high voltage DC power that had to be supplied by batteries. [. . . ] Heavy electrical currents flowing down thin conductors cause heating effects. Very high frequency signals passing along conductors or cables of certain lengths cause electromagnetic radiation effects (aerials). Electrical cables are selected for minimum loss and maximum information resolution considering the type of electrical signals they are designed to carry. A good solution to the problem is to 'bi-wire' the loudspeakers to the amplifier. 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. Two complete sets of cable are required. 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. Pull the bottom of the grille away from the cabinet; the grille will drop down from its upper location. Take care not to damage the solid walnut lower part of the cabinet. To replace the grille engage the top of the grille into the slot in the cabinet and push the grill into the recess. Apply slight pressure to the bottom whilst turning the key clockwise to engage the lock. Loudspeaker System Adjustment Each loudspeaker is fitted with a treble energy control located on the baffle beneath the detachable front grille. This high current switch block control can be used to compensate for the varied acoustic characteristics of listening rooms. The control should be adjusted with the amplifier tone controls set to the 'flat' or uncompensated position. Each loudspeaker should be adjusted individually. This is most easily done by rotating the amplifier balance control to select first one loudspeaker and then the other. It allows the output of the high frequency compression drive unit to be increased or decreased from the linear or 'flat' position over a frequency band from approximately 2kHz to 20kHz. The control has a shelving effect over the 2kHz to 20kHz frequency band. The flattest most linear response from the loudspeaker willl be obtained with both controls set at the LEVEL position, and this position should be used for initial listening tests. [. . . ] 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. Work the wax into the wood covering a small area at a time. 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. [. . . ]