3
WIRING, CONNECTIONS & SETTINGS
It is important to read this manual thoroughly before starting your installation and always plan accordingly.
Before installing, disconnect the negative (ground) wire from the vehicle’s battery to avoid damage to the
vehicle or yourself. Following all guidelines will help provide years of enjoyment with your S amplifier.TEG
Œ
Power Supply Terminal
Ground (GND): ground
Ÿ
The terminal must be connected to a metal part of the vehicle with ground
plane back to the main battery ground attachment point (a.k.a. chassis ground). This wire should be as
short as possible, but no longer than 2ft (60cm), with 8minimum gauge of AWG. The ground wire
should be terminated ground specific or ring terminal and securely bolted to the vehicle with with a
star or lock washer and nut to prevent from coming loose. The chassis ground connection point
should be scuffed to the bare metal.
Ÿ Power (+12V): The constant +12V power connection must be made at the vehicle main battery,
securely connected with a ring terminal and protected with an in-line fuse within 18in (45cm) from the
positive battery terminal. The requires a 0A fuse while the requires A fuse, with SDSP6 3 SDSP8 a 50
minimum gauge of 8AWG. Do not install the fuse until all other system connections have been made.
Fuse(s):
The built-in ATC fuse(s) are to protect the amplifier and must be inserted for operation. When
replacing fuse , first check for system wiring faults and always use the specified value for each fuse. The (s)
SDSP6 SDSP8 25 model requires one 30A fuse, while the requires two A fuses.
Power/Protect LEDs (POW/PRO): Green
Ž
These LEDs indicate the amplifier’s operating status. indicates
the amplifier is on and in normal operation. indicates the amplifier is in protection mode, due to Red
overheating, under/over-voltage output short circuit, etc.,
Turn-on Mode Select:
This switch is for selecting which method is used for turning on the amplifier. The
default setting ACC ON is for a switched +12V wire connected to the REM IN wire in the REM + SPEAKER
OUT terminal. If a wired trigger is unavailable, select AUTO ON for detection from the high DC-offset
level inputs for automatic turn-on. If the high level inputs or the source does not contain are not used
DC-offset, a +12V switched trigger .connected to REM IN will be required
High-Level/AUX/Coax Input & Pre-out Terminal:
This terminal/harness is for high level input signal
connections from the main source, as well as inputs for a 2-channel low level AUX source and a digital
coax source. If connecting to an additional amplifier, this harness also provides a 2-channel RCA pre-out
connection. Note that for SDSP6, the pre-outs are assigned to CH5/6 outputs in the DSP software, while
in the SDSP8 they are assigned to CH7/8 outputs. Use quality interconnects to ensure stable connections
and minimize the possibility for induced noise.
High-Level Input Gain Adjustments:
‘
These adjustments provide a 0dB (max) to -6dB (min) attenuation
range for the high-level inputs. Unlike traditional amplifier gains, these adjustments only provide
attenuation and do not affect S/N, so should be set at maximum unless attenuation is desired vs. other
input sources, or if level matching is required between input channels when summing signals from a
high-level source. Note that the maximum signal voltage the high-level inputs can accept without
clipping the A/D converters is 10Vrms, no matter the position of these adjustments. Also note that the
high-level source must contain DC-offset or the maximum input signal voltage will be reduced to 3Vrms.
Although the vast majority of OEM radios and factory amplified systems utilize BTL chipsets that provide
signals with DC-offset, Class-D or high voltage factory systems do not, and therefore will require external
attenuation such as with a voltage divider.
Bluetooth Port:
’
This USB terminal is for connecting the optional Bluetooth dongle (sold separately) as
an additional input source for SDSP6 and SDSP8.
Optical Input:
“
This optical port is for connecting an external source with an optical (Toslink) cable as an
additional input source for SDSP6 and SDSP8
Speaker Output & Remote In/Out Terminal: that channel of
”
Each (+) and (-) wire pair is for connecting
the amplifier's output to speaker(s) or subwoofer(s). Make sure to observe correct polarity and total
impedance per channel. The minimum nominal impedance is 2 per channel. If the source unit has a Ω
remote output wire or if a switched ignition wire is available, connect it to the REM terminal for turning
on the amplifier and select ACC ON from the turn-on mode switch . ❹
Remote Control: J port
•
This R 45 is for connecting the optional DRC digital remote controller (sold
separately), which remote control of the SDSP6 and SDSP8 provides for source select, master volume,
sub volume, mute and preset load.
USB PC Control: This USB Type-B port is for connecting to a Windows PC with the supplied cable to run
•
the DSP tuning software and make changes to the internal settings. Note that if the optional DRC
remote is also connected, it is recommended to not use it while connected to the PC software.
Note: If more than one source is connected, the optional DRC is required to change sources without the PC
software. If only one source is connected, select it from the PC software during initial setup.
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