Audiotec Fischer HELIX G FIVE Handbuch Seite 15

6 X-Over
This switch allows to set the internal crossover to
highpass, fullrange or lowpass / bandpass mode.
The filter options depend on the channel pair.
Channel pair A/B: Highpass filter or fullrange
If this X-Over switch is set to HPF (highpass filter)
the crossover frequency for the highpass can be ad-
justed with control 5 of the channel pair A/B.
At switch position FULL (fullrange) the crossover is
bypassed.
Channel pair C/D: Highpass filter, fullrange or low-
pass filter resp. bandpass.
If this X-Over switch is set to HPF (highpass filter)
the crossover frequency for the highpass can be ad-
justed with control 5 of the channel pair C/D.
At switch position FULL (fullrange) the crossover is
bypassed.
At switch position LPF (lowpass filter / bandpass)
the highpass is always active. That means a band-
pass is created in any case.
By adjusting the highpass (control 5) and lowpass
(control 7) filter any bandpass between15 Hz and
4,000 Hz can be realized. Please note that the high-
pass has to be adjusted even if it is set to 15 Hz
(left stop).
Caution: To avoid a loss of gain make sure that
the crossover frequencies of the high- and lowpass
filters do have an interval of at least two octaves
when generating a bandpass.
That means if the lowpass signal is adjusted to
320 Hz the highpass should be adjusted to 80 Hz
or less (one octave = doubled frequency or halved
frequency).
7 LPF
This control is used to adjust the crossover frequen-
cy of the lowpass filter.
The control range of the lowpass filter on the chan-
nel pair C/D is from 40 to 4,000 Hz.
The control range of the lowpass filter on the sub-
woofer channel is from 50 to 250 Hz. This control is
always activated and its adjustment is mandatory.
8 Subsonic
This control is used to adjust the crossover fre-
quency of the subsonic filter from 15 to 50 Hz. The
subsonic filter cuts off very low frequencies which
are not in the audible range and relives the amplifi-
er and the subwoofer. Additionally the amplifier will
have more power available for the audible frequen-
cies. This control is always activated and its adjust-
ment is mandatory.
9 Remote
This input is used to connect the included remote
control. The remote control allows you to control the
volume of the subwoofer channel.
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