Initial Positioning - Tannoy ST50 Owner's Manual

INITIAL POSITIONING

With a moving coil drive unit, the sound will appear to emanate from a point a little behind
the front of the speaker cabinet. This position, or driving point, coincides approximately
to the bass unit (or Dual Concentric™) dust cap position. For optimum results the SuperTweeter
should be positioned centrally, on top of the loudspeaker cabinet, so that the SuperTweeter
drive unit is in line with with this bass unit driving point, or cone neck in the case of the
Dual Concentric™. See fig. 2.
ADJUSTMENTS
Refer to the instruction manual for your loudspeakers and select the SENSITIVITY setting
that is the nearest to that of the speaker. Using your fingers, turn the switch on top of the
SuperTweeter to the correct position (Fig. 3). If you do not have a manual for your
loudspeakers, choose the middle setting initially. For the CROSSOVER FREQUENCY, it is
again best to choose the middle position initially, unless you have details on your loudspeaker
system. Be prepared to experiment though to achieve the best results.
The SuperTweeter may be adjusted for angle by means of the slots provided in the support
platform, and should be pointing at ear level when seated.
After double-checking the wiring, you are now ready to switch your amplifier on. Select
some music you are familiar with, and gently advance the volume control to normal
listening level.
RUNNING IN
Like all loudspeakers, the drive unit in your SuperTweeter requires a while to reach optimum
performance, as the stresses in the materials relax. For this reason, it is beneficial to run
the system at fairly high levels at normal room temperature for approximately 20 hours
to reach best results.
FINE TUNING
Once the SuperTweeter is fully run in, you are in a position to fine-tune the system. Listening
room acoustics and personal taste may dictate some adjustment. Remember that like a
subwoofer, the SuperTweeter should not draw attention to itself, but should offer a natural
enhancement to the upper frequencies.
The effect of the SENSITIVITY adjustment screw is to increase or decrease the output over
the full frequency operating range of the SuperTweeter, in 4dB steps. The CROSSOVER
FREQUENCY control offers 3 positions for the SuperTweeter energy to be rolled in (Fig. 4).
You may also experiment with the SuperTweeter position, to achieve best results.
The SuperTweeter has a protective mesh grille, which can be removed for optimum
performance. It is simply held in place by the magnetic field from its own magnet. Carefully
remove by gently holding the mesh on the edges and pulling forward. Take care not to
touch the fragile dome.
CARE OF THE SUPERTWEETER
Both SuperTweeter and support platform can be dusted with a soft lint free cloth. Use a
slightly damp cloth to remove any marks.
Under no circumstances should chemical cleaning agents be used.
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