Fine Tuning - Tannoy GO/ST300MG-SI Manual Del Usuario

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SUPERTWEETER-GO/ST300MG-SI
Initial Positioning
With a Tannoy Dual Concentric loudspeaker system, the low and high frequency radiation is generated on the same axis. This is done by
mounting the high frequency unit behind the low frequency one, and coupling it to the low frequency radiator via a carefully optimised
waveguide through the centre of the drive unit. Low and high frequencies are thus fully integrated at source, to give the most accurate
reproduction. The sound will therefore appear to emanate from a point source a little behind the front of the speaker cabinet. The
SuperTweeter then needs to be positioned to coincide with this point for best results. For this reason, an alignment gauge, covering our
current and past models is included.
Firstly, with reference to Fig. 3 and Table 1, position the SuperTweeter on the cabinet, then the alignment gauge such that it is flush with
the front of the cabinet. The distance shown is from the front edge of the cabinet, and refers to the letter coded marking on the alignment
gauge. Finally, withdraw the alignment gauge from under the Supertweeter, ensuring it does not move. Note that due to the large
distance involved, the alignment gauge is unsuitable for the Tannoy Autograph- please use a tape measure in this case.
Fig. 3 Positioning SuperTweeter on Cabinet
Adjustments
Referring to Table 1 again, select the sensitivity and crossover frequency settings to suit your loudspeakers, and install the adjustment
screws into the correct position on the SuperTweeter adjustment panel.
The vertical angle on the SuperTweeter may be adjusted by slightly rotating the machined tweeter housing about the friction damped
yoke, on which it sits. Optimum performance will be achieved if the SuperTweeter diaphragm is pointing at ear height 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. The settings chosen for SENSITIVITY and CROSSOVER
FREQUENCY are those recommended by Tannoy as being optimum for your loudspeakers. However 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 1.5 dB steps. The CROSSOVER FREQUENCY control offers 3 positions for the SuperTweeter energy to be rolled in. (Fig 4)
The position of the SuperTweeter has been determined in Table 1 to correspond to the acoustic centre of your Tannoy Dual Concentric
model. However the user is free to experiment with the positioning. For example, in difficult listening room acoustics, the SuperTweeter
may be brought further forward.
The SuperTweeter has a protective guard which can be removed for optimum performance. Carefully remove by gently pulling forward.
Take care not to touch the fragile dome.
6
0
-6
-12 18 kHz
16 kHz
-18
14 kHz
-24
-30
5k 10k 20k 50k 100k
FREQUENCY (Hz)
Fig. 4 E ect of Crossover Frequency Control
Care of the SuperTweeter
Wood is a product of nature. Every piece of wood, even from the same tree is slightly different in colour, texture, and grain, making each
SuperTweeter unique. Wood contains natural imperfections, which add to its character and appeal. Natural features such as small sap
pockets, pin knots, and streaks are normal and should not be considered defects.
Two finishes of the enclosure are available, walnut/gold anodised machined aluminium and satin black/silver anodised machined
aluminium. For the satin black finish, simply wipe with a soft slightly damp cloth.
The walnut enclosure has been hand waxed before dispatch from our finishing workshop. 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 provided with Tannoy PRESTIGE loudspeakers and is also available from your authorised Tannoy dealer.
This should be applied sparingly and carefully (avoiding metalwork and terminals), with a soft lint-free cloth, such as muslin.
Under no circumstances should chemical cleaning agents be used.
Quick Start Guide
200k
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