Alpine HDP-D90 - Connections and Functions

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Connections and Functions
①②③④⑤ Pre-Ou t ja cks
5 groups of RCA aud io signa l output, which
can be connected to an externa l power
amplifier.
⑥ RC A Audio I nput j ack s
1 groups of RCA a udio signal input, which
can be connected to the RCA audio signal
output of car audio player.
⑦ H igh Le vel I nput C onne ctor
Connect to the high-level ou tput of the car
audio player.
⑧ C oaxial I npu t ja ck
Connect th e car audio coaxial cable, switch
the audio source of the machine to t he
digital signal in put, and play the coaxial
digital signal.
⑨ O ptical Inpu t ja ck
Connect the car audio opt ical fiber cable,
switch the audio source of the machin e to
the digital sign al inpu t, and play th e optical
digital signal.
⑩ C ontro ller Co nnector (S old se parately)
System expansion interface.
⑪ US B 2.0 connector
It can be connected to a computer v ia a USB
2.0 cable for detailed tuning operations and
settings.
⑫ External Bluetooth connector
Choose high-defin ition Bluetooth as t he
input signal, or connect HDP-D90 mobile
phone tuning software. After the connection
is successful, the Bluetooth is always on.
⑬ Power S uppl y Terminal
Connect t he car batter y.
⑭ Fuse
Insert two 30A fuses.
⑮ I nput Sele ct Switch
When the switch is pulled to the "ACC"
terminal, ACC starts the machine; when it is
pulled to th e "HOS T" terminal, the machine
is started by the high level input signal
H1-/H1+.
⑯⑰ C H1-4 Speaker Out put Terminal s
The a mplifier output of the mac hine is
connected to the speaker.
⑱⑲ C H5-8 Speaker Out put Terminal s
The a mplifier output of the mac hine is
connected to the speaker.
⑳㉑ C H9-1 2 Sp eaker Outp ut Ter minals
The a mplifier output of the mac hine is
connected to the speaker.
㉒ External Power Ampl ifier ( Sol d se parately)
Connect an external power amplifier.
㉓ C ar Au dio P layer (So ld separately)
Connect t he car audio player.
To prevent extern al noise from entering the a udio sy stem.

The installation position of th e machi ne and the wiring arrangement should be at least 10cm
away from the automobile wiring harness.

Try to keep the battery power cord away from other wires.

Securely connect t he ground wire to the bare metal contacts of the car chassis (remove any
paint, dirt or grease if n ecessary).

If you wan t to attach an optional noise suppressor, please try to keep it away from the
machine when connecting. Your Alpine dealer has various types of noi se suppressors, please
contact them for details.

Your Alpine dealer is proficient in noise prevention methods, please consult y our dealer for
details.