T+A Elektroakustik TCD 610 W SE, Руководство пользователя

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Settings
The following section describes the sub-
woofer’s adjustment facilities in detail.
Operation
This is the procedure for adjusting the settings:

First call up the setting which you wish to alter by pressing the appropriate
button on the remote control handset.

The corresponding value can then be adjusted using the  / 
buttons.
Adjustment option
Freq (uency)
(

)
This point enables you to set the transition frequency between the sub-woofer
and the primary loudspeakers within the range 40 Hz to 150 Hz. The larger the
main speakers, the lower the transition frequency should be.
The transition frequency should be set as low as possible, consistent with the
size of the primary speakers, in order to make the sub-
woofer’s physical
location as unobtrusive as possible.

If no filtering is required, e.g. because the surround amplifier to which the sub-
woofer is connected features a sub-woofer output with its own filter, this func-
tion can be switched off by holding the
 button pressed in until
‘
- -
’
appears on the screen.
Adjustment option
Slope
(

)
Select this adjustment option if you wish to alter the slope of the low-pass filter
to suit your primary loudspeakers. The slope can be set to any value in the
range 6 dB (1
st
order filter) to 36 dB (6
th
order filter) in 6 dB increments.
Adjustment option
Shape
(

)
The TCD 610 W allows you to select any of four different filter types.
Filter 1 is a Linkwitz-Riley filter
This filter offers an ideally smooth frequency curve.
With a slope of 12 dB / octave it is a very good choice for use in combination
with sealed loudspeakers. Set to 24 dB / octave it is suitable for bass reflex
speakers. If the slope is set to 6 dB, 18 dB, 30 dB and 36 dB per octave this
filter behaves identically to the Butterworth filter (Filter 2).
Filter 2 is a Butterworth filter
This filter offers an ideally smooth frequency curve.
This filter may produce better results than the Linkwitz-Riley filter (Filter 1),
when used with satellite loudspeakers featuring their own high-pass filter.
Filter 3 is a Bessel f ilter
This filter features ideal transitional behaviour.
When set to a slope of 12 dB / octave this filter is suitable for use with certain
types of sealed satellite speaker.
Filter 4 is a Chebyshev filter
The characteristics of this filter include a steep transition between the pass
band and the stop band, but is slightly less linear in the pass band (1dB).
In combination with a steep slope of 24 or 30 dB per octave this filter is suitable
for use with some bass reflex and passive radiator loudspeakers.