Epos M Series Manuale Utente
Phase
Adjustment is necessary to properly integrate the output of the M subwoofer to match the
respective phase of the front, centre and rear speakers in your 5.1 system. Phase describes the
polarity of the sound waves travelling to your ears. Positive means moving forward and negative
means moving back. If the sound from your front speakers is designed to be more positive at their
low frequency extreme, it will be necessary to adjust the output of the M subwoofer to also be
positive, otherwise they will tend to cancel one another out and reduce the level or distort or colour
the sound. As every situation will be different as speakers vary from make to make and room to
room, adjustments should be done simply by trial and error. You will easily hear which setting best
suits your system after you run it with a signal and adjust the Phase until you hear the most
pleasing result.
Adjustment is necessary to properly integrate the output of the M subwoofer to match the
respective phase of the front, centre and rear speakers in your 5.1 system. Phase describes the
polarity of the sound waves travelling to your ears. Positive means moving forward and negative
means moving back. If the sound from your front speakers is designed to be more positive at their
low frequency extreme, it will be necessary to adjust the output of the M subwoofer to also be
positive, otherwise they will tend to cancel one another out and reduce the level or distort or colour
the sound. As every situation will be different as speakers vary from make to make and room to
room, adjustments should be done simply by trial and error. You will easily hear which setting best
suits your system after you run it with a signal and adjust the Phase until you hear the most
pleasing result.
Power Switch
This switch turns the subwoofer 'ON' or 'OFF' (When left in the ON position without a signal it
allows the 'STANDBY' feature to become active).
This switch turns the subwoofer 'ON' or 'OFF' (When left in the ON position without a signal it
allows the 'STANDBY' feature to become active).
IEC Socket (Mains)
Connect to an appropriate mains socket via the IEC Power Cable supplied.
Connect to an appropriate mains socket via the IEC Power Cable supplied.
AC Voltage Selector Switch
Please ensure the AC Voltage selector is in the correct position. (See Page 1)
Please ensure the AC Voltage selector is in the correct position. (See Page 1)
OVER CURRENT CUTOUT
The M subwoofer does not use a compression limiter to pre-distort the signals it cannot handle, to
prevent it from cutting out. No amplifier has infinite power capabilities and has to be protected from
destroying itself under extreme conditions. To protect the M subwoofer's 300W amplifier from
excessive current demands, it has been designed to cut the signal to the speaker in the event of
an overload. This will temporarily mute the subwoofer and stop it from working until the demand is
lower. If the volume is reduced, the frequency range is altered to cut-off at a higher frequency or
the passage containing the high level low frequency sound is passed, the sound output will be
restored automatically.
The M subwoofer does not use a compression limiter to pre-distort the signals it cannot handle, to
prevent it from cutting out. No amplifier has infinite power capabilities and has to be protected from
destroying itself under extreme conditions. To protect the M subwoofer's 300W amplifier from
excessive current demands, it has been designed to cut the signal to the speaker in the event of
an overload. This will temporarily mute the subwoofer and stop it from working until the demand is
lower. If the volume is reduced, the frequency range is altered to cut-off at a higher frequency or
the passage containing the high level low frequency sound is passed, the sound output will be
restored automatically.
OVER TEMPERATURE CUTOUT
To protect the amplifier from damage caused by excessive heat, there is a thermal sensor attached
to the amplifier's heatsink that is set to trip the output if the internal temperature exceeds a pre-set
level. If this happens, the M subwoofer will stop working until the temperature reduces to an
acceptable level. The reasons this might happen are high ambient room temperature, direct
sunlight, high level operation for long periods and insufficient ventilation of the amplifier control
panel.
To protect the amplifier from damage caused by excessive heat, there is a thermal sensor attached
to the amplifier's heatsink that is set to trip the output if the internal temperature exceeds a pre-set
level. If this happens, the M subwoofer will stop working until the temperature reduces to an
acceptable level. The reasons this might happen are high ambient room temperature, direct
sunlight, high level operation for long periods and insufficient ventilation of the amplifier control
panel.
POSITIONING AND TUNING
Remember that low frequencies have a longer wave length and sound waves travel to the ear in
waves. It therefore may be necessary to move your subwoofer to different positions to completely
suit your requirement or taste. If you require more or less power at low frequencies, it can be
affected by the proximity to an adjacent wall or boundary. Each wall or boundary will further
enforce the effect of the woofer so, moving it closer or further away from a rear or side wall will
change the sound effect dramatically. Corners double the effect as there are two boundaries.
Remember that low frequencies have a longer wave length and sound waves travel to the ear in
waves. It therefore may be necessary to move your subwoofer to different positions to completely
suit your requirement or taste. If you require more or less power at low frequencies, it can be
affected by the proximity to an adjacent wall or boundary. Each wall or boundary will further
enforce the effect of the woofer so, moving it closer or further away from a rear or side wall will
change the sound effect dramatically. Corners double the effect as there are two boundaries.
The M subwoofer has been designed to match medium to small rooms, with an area of
approximately 10-20 M
approximately 10-20 M
2
or 300-600 feet
2
. If higher power or larger rooms are used, it may be
necessary to increase the number of M subwoofers used in a single installation.
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