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15. SUBWOOFER AUDIO
SOURCE:
This switch selects the audio source for the subwoofer
channel. Audio can be sourced from the SUB input
RCA connectors or from the FRONT & REAR input RCA
connectors.
16. SUBWOOFER LEVEL:
This allows level adjustment of the subwoofer input
signal. Use this control to directly match the head unit
to the amplifier. To set this control correctly, turn the
amplifier level to MIN & the head unit to 3/4 volume, with
the bass and treble on zero, then slowly turn up the level
control towards the MAX end of the control. NOTE: If
the sound becomes distorted, turn this control down.
17. REAR FILTER FREQUENCY:
This sets the crossover frequency point for the rear filter
between 32Hz and 320Hz. NOTE: Failure to correctly
set could result in speaker damage.
18. REAR FILTER SELECTION:
This switch selects the type of filter used for the rear audio
signal. Either Low Pass, High Pass or Full Range can be
selected. The Low Pass filter is designed to filter out all
mid to high frequencies that only full range speakers
should produce. The High Pass filter is designed to filter
out all low frequencies that only subwoofers should
produce. Full Range allows all frquencies.
19. FRONT FILTER SELECTION:
This switch selects the type of filter used for the front
audio signal. Either Low Pass, High Pass or Full Range
can be selected. The Low Pass filter is designed to
filter out all mid to high frequencies that only full range
speakers should produce. The High Pass filter is designed
to filter out all low frequencies that only subwoofers
should produce. Full Range allows all frquencies.
20. FRONT FILTER FREQUEN-
CY:
This sets the crossover frequency point for the front filter
between 32Hz and 320Hz. NOTE: Failure to correctly
set could result in speaker damage.
5. REMOTE SUBWOOFER LEV-
EL CONTROL CONNECTION:
Connect the optional (supplied) Remote Level Controller
to this socket.
6. POWER AND STATUS LED’S:
This displays “green” if the amplifier has been correctly
powered up and ‘red’ if any faults are present.
7. FUSES:
Please ensure the correct type of fuse is fitted. For MS-
DA51600 2 x 40A fuses.
8. +12V CONNECTION:
Connect directly to the vessel battery positive (+) terminal
via a 4 gauge power cable, with an inline fuse or circuit
breaker at the battery end. NOTE: This is the last wire
to connect up during installation. Damage could result if
this is not done.
9. REMOTE TURN-ON CON-
NECTION:
This terminal is for turning the amplifier on & off. The
remote input requires a switched positive (+12V) to power
‘ON’ the amplifier. This can usually be found on the rear of
the head unit in the form of a remote output.
10. GROUND CONNECTION:
Connect directly to the vessel’s earth system via a 4 guage
power cable. NOTE: This is the first wire to connect up
during the installation.
11. SUBWOOFER LP FILTER
FREQUENCY:
This sets the crossover frequency point for the subwoofer
channels’ low pass filter between 32Hz and 320Hz.
12. REAR LEVEL:
This allows level adjustment of the rear input signal.
Use this control to directly match the head unit to the
amplifier. To set this control correctly, turn the amplifier
level to MIN and the head unit to 3/4 volume, with the bass
and treble on zero, then slowly turn up the level control
towards the MAX end of the control. NOTE: If the
sound becomes distorted, turn this control down.
13. FRONT LEVEL:
This allows level adjustment of the front input signal.
Use this control to directly match the head unit to the
amplifier. To set this control correctly, turn the amplifier
level to MIN and the head unit to 3/4 volume, with the bass
and treble on zero, then slowly turn up the level control
towards the MAX end of the control. NOTE: If the
sound becomes distorted, turn this control down.
14. FUSION LOW FREQUENCY
CONTROL:
The FUSION Low Frequency Control (F.L.F.C.) is a dual
stage control interface. The combination of a Subsonic
filter & a Bass Boost control allows precise shaping of
the audio signal for your subwoofer(s). The Subsonic
filter is essentially a high-pass crossover which blocks
the frequency signal from 10Hz - 80Hz. This signal often
contains no music & its removal will improve subwoofer
control. The Bass Boost is a variable control to increase
the level at 45Hz from 0 - +12dB of gain. Adjust these
controls with extreme care.