AAMP Global PAC AP4-CH21 User manual

PAC®| Ph. 866-931-8021 | [email protected]
©2017 PAC | PAC is a Power Brand of AAMP Global
www.pac-audio.com
Rev. 020717 Page 1
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AP4-CH21
The AP4-CH21 provides a 6-channel pre-amp output for use with aftermarket audio equipment. Using the full range,
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Introduction and Features
Important Notes
1. This interface is only compatible in vehicles equipped with a data-bus controlled premium sound system. To verify
compatibility, look for an Alpine, Beats, or Harmon Kardon badge on the door speakers, center speaker, or factory
subwoofer. If none of these brands are shown, check for the presence of a center speaker or subwoofer.
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3. The remote output is rated at 2A of current. If more current is needed an external relay must be used.
4. Channels 5 and 6 are non-fading outputs. The output level of channels 5 and 6 can be controlled using the supplied level
control knob.
5. The minimum volume level is set to 0 dB by default. If you are happy with this level in your particular application then
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6. The level control knob must be connected in order to manually adjust the minimum volume setting.
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To Aftermarket
Amplier
Non-FadingRearFront
1(L) 2(R) 4(R) 5(L) 6(R)3(L)
Remote Turn On Output
2A Max Output
AP4-CH21-HAR
To Radio To Vehicle
Harness
Non-Fading
Level Control
Knob
Module Layout
Interface Connector 1
Expansion Port
Programming Button
Feature Select
DIP switches
Non-Fading Level Control
Knob Connection
USB Connection
LED 1
TOSLINK Output
(APA-TOS1 sold separately)
Front Output
Ch. 1(L) and 2(R)
Rear Output
Ch. 3(L) and 4(R)
Non-Fading Output
Ch. 5(L) and 6(R)
LED 2

PAC®| Ph. 866-931-8021 | [email protected]
©2017 PAC | PAC is a Power Brand of AAMP Global
www.pac-audio.com
Rev. 020717 Page 2
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1. Turn the ignition on. LED 1 on the interface will turn on and the +12v remote output will turn on.
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3. Check volume, balance, fade and EQ settings.
4. If you would like to adjust the minimum volume, do so using one of the methods outlined below. If you are happy with the
default level, no adjustment is necessary.
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6. Turn the level control knob clockwise until the desired minimum volume level is reached.
7. You can now either press the programming button once or wait ten seconds to exit the settings.
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6. Turn the level control knob clockwise until the desired minimum volume level is reached.
7. You can now either press the programming button once or wait ten seconds to exit the settings.
Installation
1. 5HPRYHIDFWRU\UDGLR
2. Disconnect the main 22-pin factory harness from radio.
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8. Connect the level control knob to the module and install in an accessible location.
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DIP
1234
ON
No Function YY3UHRXW No Function No Function
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PAC®| Ph. 866-931-8021 | [email protected]
©2017 PAC | PAC is a Power Brand of AAMP Global
www.pac-audio.com
Rev. 020717 Page 3
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• &RQ¿JXUH8VHU,QWHUIDFH2SWLRQVVXFKDV
• Minimum Volume Level
• Enable / Disable factory EQ
• 6HW%DVV0LG7UHEOHFHQWHU
frequencies and Q factor
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heard.
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%DQG(4(QDEOHG This allows you to enable / disable the 3 band factory EQ.
%DVV0LG7UHEOH)UHT4)DFWRU This allows you to set the center frequency that will be adjusted when setting the 3 band
factory EQ, as well as the Q Factor for each frequency. The Q Factor determines how many of the adjacent frequencies will be
affected when adjusting the selected frequency. The lower the Q Factor, the more frequencies will be affected.
60HZ 500HZ 7.5KHZ
80HZ 1KHZ 10KHZ
100HZ 1.5KHZ 12.5KHZ
120HZ 2.5KHZ 15KHZ
0.50 0.75
1.00 1.00
1.50 1.25
2.00 1.50
Bass Frequency Mid Frequency Treble Frequency
Available Frequencies and Q Factors
Bass Q Factor Mid Q Factor Treble Q Factor 0.75
1.25

PAC®| Ph. 866-931-8021 | [email protected]
©2017 PAC | PAC is a Power Brand of AAMP Global
www.pac-audio.com
Rev. 020717 Page 4
P ifi A C ti
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AP4-CH21
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You can restore the interface to factory default settings by pressing and holding the programming button on the side of the module
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• Minimum volume level
• Enable / Disable factory EQ
• Factory EQ frequency
• Factory EQ Q factor
Troubleshooting
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still hear the hiss, lower your amp gains until the hiss is gone.
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volume. If you still do not hear voice prompts, be sure that the 10-pin connector is plugged in behind the radio.
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for 12 seconds until a tone is heard.
Action / Color During Normal Operation
Solid Red Module Active
Solid Green Chime Volume Adjustment Mode
Solid Amber Minimum Volume Adjustment Mode
Rapid Blink Any Color DSP Activity
LED2 Blink Amber USB Connection Detected
Both LEDs Alternate Blinking Red Performing eprom reset
LED Legend
LED 1
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