User Manual
Operazioni
10 BM14S II
5. Operation
10 Dynaudio Acoustics BM14S
Setting the phase (Phase)
With the phase settings you can adjust the phase relationship between the subwoofer
and main speakers. If either subwoofer or main speaker are slightly out of phase in
relation to the other, it can result in decreased bass output in the frequency response
area where they overlap each other.
The phase relationship between subwoofer and satellite speakers is very dependent
on relative distance, construction and working principles of the main speakers. The
figure on the left shows a case whereby phase of the subwoofer and main speakers
are incorrect in the critical overlap area, thus significantly reducing acoustic output in
the listening room in that area.
To find the correct phase setting:
1. Play a bass-rich track which also covers the overlap area.
2. Toggle the Phase switch between 0° and 180°.
Choose the setting for which you experience the most bass.
Setting the satellite cut-off frequency (Highpass)
Depending on the bass capabilities of the speakers, the frequency range of
subwoofer and speakers can overlap between 50 Hz and 150 Hz. A bump or a gap in
the frequency response and thus a lower sound quality will be experienced if the
system is not matched properly. In addition, small speakers and low powered
amplifiers will particularly be affected by the low frequency signals, which again
has
a negative effect on the sound quality. Therefore it makes sense to limit the bass
range of the connected speakers (called “satellites” in this case) by a highpass filter.
The BM14S provides three settings to achieve this:
• Flat = no limitation
• 60 Hz = frequencies below 60 Hz are cut-off
• 80 Hz = frequencies below 80 Hz are cut-off
To set the cut-off frequency
Switch Highpass control to needed position.
Note: You can not set the phase if the subwoofer is in slave mode. In this case the
phase is controlled by the setting of the master subwoofer.
Combined frequency response
Subwoofer
Main speakers
Level
Frequency
Nota:
Non è possibile impostare la fase se il subwoofer si trova in
modalità Slave. In questi casi la fase viene determinata dalle
impostazioni dell’unità sub Master.
Impostare la frequenza di cut-off dei satelliti (Highpass)
In base alle capacità di riproduzione delle basse frequenze
dei diffusori, la gamma di frequenze dell’unità sub e dei dif-
fusori stessi può sovrapporsi nell’area compresa tra 50 Hz
e 150 Hz. Se il sistema non è abbinato correttamente, è
possibile percepire un buco o un incremento nella risposta
in frequenza, deteriorando quindi la qualità sonora. Inoltre,
i diffusori di piccole dimensioni e gli amplicatori con bassa
potenza risulteranno particolarmente inuenzati dai segnali di
basse frequenze, cosa che di nuovo avrà un effetto negativo
sulla qualità sonora. È quindi comprensibile la necessità di
limitare la gamma di basse frequenze dei diffusori collegati
(chiamati in questo caso “satelliti”) tramite un ltro passa-alto
(o Highpass). Per ottenere ciò, l’unità sub BM14S II mette a
disposizione tre impostazioni:
– Flat = nessuna limitazione applicata
– 60 Hz = taglio delle frequenze al di sotto dei 60 Hz.
– 80 Hz = taglio delle frequenze al di sotto dei 80 Hz.
Per impostare la frequenza di cut-off
– Imposta il selettore Highpass nella posizione richiesta.
5. Operation
10 Dynaudio Acoustics BM14S
Setting the phase (Phase)
With the phase settings you can adjust the phase relationship between the subwoofer
and main speakers. If either subwoofer or main speaker are slightly out of phase in
relation to the other, it can result in decreased bass output in the frequency response
area where they overlap each other.
The phase relationship between subwoofer and satellite speakers is very dependent
on relative distance, construction and working principles of the main speakers. The
figure on the left shows a case whereby phase of the subwoofer and main speakers
are incorrect in the critical overlap area, thus significantly reducing acoustic output in
the listening room in that area.
To find the correct phase setting:
1. Play a bass-rich track which also covers the overlap area.
2. Toggle the Phase switch between 0° and 180°.
Choose the setting for which you experience the most bass.
Setting the satellite cut-off frequency (Highpass)
Depending on the bass capabilities of the speakers, the frequency range of
subwoofer and speakers can overlap between 50 Hz and 150 Hz. A bump or a gap in
the frequency response and thus a lower sound quality will be experienced if the
system is not matched properly. In addition, small speakers and low powered
amplifiers will particularly be affected by the low frequency signals, which again
has
a negative effect on the sound quality. Therefore it makes sense to limit the bass
range of the connected speakers (called “satellites” in this case) by a highpass filter.
The BM14S provides three settings to achieve this:
• Flat = no limitation
• 60 Hz = frequencies below 60 Hz are cut-off
• 80 Hz = frequencies below 80 Hz are cut-off
To set the cut-off frequency
Switch Highpass control to needed position.
Note: You can not set the phase if the subwoofer is in slave mode. In this case the
phase is controlled by the setting of the master subwoofer.
Combined frequency response
Subwoofer
Main speakers
Level
Frequency