Owner's Manual

NOTE: When bridging the channels in a zone, you must use an
RCA splitter to send the same signal to both the left and right
channels of the zone.
1
Connect speaker wire to the amplifier's positive terminal of
the left channel for a zone .
2
Connect the other end of the speaker wire to the positive
terminal on the speaker or subwoofer .
NOTE: The bridged terminals for a zone are connected with
a line and labeled BRIDGED for easy identification.
3
Connect speaker wire to the negative terminal of the right
channel for a zone .
4
Connect the other end of the speaker wire to the negative
terminal on the speaker or subwoofer .
5
Connect the split ends of an RCA splitter to the left RCA
ports for both bridged zones on the amplifier .
6
Connect the single end of the RCA splitter to the left RCA
stereo output .
7
Connect the split ends of an RCA splitter to the right RCA
ports for both bridged zones on the amplifier .
8
Connect the single end of the RCA splitter to the right RCA
stereo output .
9
Adjust the volume level and other settings for the zone
(Adjusting the Level for a Zone, page 4).
Completing the Connections
Before you connect the amplifier to the power source, you must
complete all other connections to the amplifier .
1
Make sure all speaker wires are connected to the speakers
and the amplifier.
2
Make sure all RCA cables are connected to the amplifier and
the stereo.
3
Make sure the ground cable is connected to the amplifier and
the battery (Connecting to Power, page 2).
4
Make sure the amplifier turn-on wire is connected to the
amplifier and to the amplifier turn-on wire from the stereo or a
dedicated switch (Connecting to Power, page 2).
5
Using the included 3 mm hex key, connect the power wire to
the positive terminal on the amplifier.
NOTICE
The SG-DA61500 device is designed for a 12 Vdc power
source. The SG-24DA61500 device is designed for a 24 Vdc
power source. Connecting to the incorrect power source may
damage the device.
6
Select an option:
• Connect the other end of the power wire, through the in-
line fuse, to the battery.
• Connect the other end of the power wire to the appropriate
circuit breaker.
Configuring the Amplifier
Before you use the amplifier, you should configure it for any
connected speakers and subwoofers.
You must make all power, speaker, and stereo connections
before you can configure the amplifier.
NOTE: If your stereo features digital signal processing (DSP),
such as a FUSION Apollo
™
RA770, you should use the
FUSION-Link
™
app when configuring the amplifier (Configuring
the Amplifier for a DSP Compatible Stereo, page 5).
Amplifier Configuration Controls
Each zone has a set of controls you must use to configure the
sound for the speakers connected to that zone.
Dial or
Switch
Function
LEVEL Adjusts the input signal level for the zone (Adjusting the
Level for a Zone, page 4).
FULL Sets a full-range filter on the zone.
Allows all frequencies. This is usually used when full-range
speakers are connected to the zone, and no subwoofer is
present.
LPF Sets a low-pass filter on the zone.
Filters out mid to high frequencies that only full-range
speakers should produce. This is usually used when a
subwoofer is connected to the zone.
HPF Sets a high-pass filter on the zone.
Filters out low frequencies that only subwoofers should
produce. This is usually used when smaller speakers are
connected to the zone.
FREQ Adjusts the crossover frequency for the zone
You should adjust this based on the LPF/HPF setting:
• When LPF is selected, all frequencies below the FREQ
setting are passed to the subwoofer connected to the
zone.
• When HPF is selected, all frequencies above the FREQ
setting are passed to the speakers connected to the
zone.
BASS
BOOST
Adjusts the gain on the 45 Hz level.
This control is available on ZONE 3 only.
This setting should be adjusted only when you connect a
subwoofer or full range speakers capable of low
frequencies to the zone.
Adjusting the Level for a Zone
NOTE: The level setting is music dependent, and not all levels
are appropriate for all types of music. For example, if you adjust
the level setting for rock music, then listen to classical music, it
could result in distortion due to clipping.
1
Using a flat screwdriver, adjust the LEVEL dial for the zone to
MIN by turning the dial counter-clockwise.
4 SG-DA61500/SG-24DA61500 Signature Series Installation Instructions