Amplifier Integration Interface: The PAC AmpPRO AP4-FD21 simplifies
the installation of aftermarket amplifiers in select Ford
vehicles with data-bus controlled factory sound systems. With the AmpPRO
AP4-FD21, you can improve your vehicle's audio performance while keeping an
original radio's fit, finish, and features.
- The factory radio and factory amplifier must remain
connected in the vehicle and be operational in order to use the PAC AmpPRO
- If you are only using the PAC AmpPRO interface to add a subwoofer
amplifier, the factory amplifier will still power the other speakers in
Vehicle Compatibility: The PAC AmpPRO AP4-FD21 amplifier
integration interface is compatible with the following 2013-2017 Ford
vehicles with a
data-bus controlled factory premium sound system.
Make ||Model ||Year |
| Ford ||Edge ||2015-2017 |
|Expedition ||2015-217 |
|Explorer ||2011-2017 |
|F- Series (150/250/350/450/550) ||2013-2017 |
|Focus ||2012-2017 |
|Fusion ||2013-2016 |
|Taurus ||2013-2015 |
Note: This interface is only compatible in vehicles
equipped with a data-bus controlled premium sound system. To verify
compatibility, look for a Sony badge on the door speakers, center speaker,
or factory sub woofer. If this brand is not shown, check for the presence of
a center speaker or subwoofer.
6Ch Pre-Outs: The PAC AmpPRO AP4-FD21 provides a 6-channel pre-amp
output for use with aftermarket amplifiers. Using the full-range, fixed level
factory radio output, in conjunction with data-bus CAN messages, the AP4-FD21
delivers a variable 5V RMS pre-amp output with fading, balance, equalization,
and level control capabilities.
Non-Fading Level Control Knob: Channels 5-6 (Sub) of the
AP4-FD21 are non-fading outputs. The output level of channels 5-6 can be
controlled using the supplied level control knob. The level control knob comes
with a 6' cable which plugs into the interface module and should be mounted in an accessible location.
Data Controlled Remote Turn-On: A data controlled remote amplifier turn on wire is
also provided by the PAC AmpPRO AP4-FD21. The remote turn-on is rated at 2A of current. If more current is needed an
external relay must be used.
Retained Factory Audio Features: The PAC AmpPRO AP4-FD21 also retains
all audio from other vehicle features such as factory Navigation Prompts,
Bluetooth, Sync, and Warning Chimes.
Minimum & Chime Volume: If the minimum volume of your factory radio is too loud
once the AP4-FD21 is installed,
you can manually set the level of the minimum volume using either the
programming button on the side of the interface or the factory SWC (Steering
Wheel Controls) in conjunction with the supplied level control knob. You can
also use AmpPRO PC app. You can also adjust the chime volume level.
AmpPRO PC App: Using the
AmpPRO PC App (for
Windows PC only) allows you to configure user
interface options such as Minimum Volume Level, Chime Volume Level, and a 3-Band EQ from your Windows
computer or laptop. The app can
also be used to update product firmware.
- Minimum & Chime Volume Level: From the app you can set the minimum volume level of the factory radio,
as well as the chime volume level.
- 3-Band EQ: Enables the 3-band EQ (Bass-Mid-Treble) with frequency
and Q-factory adjustment. The Bass Frequency can be set to 60, 80, 100, or
120Hz; while the Bass Q-Factor can be set to 0.5, 1.0, 1.5, or 2.0. The Mid
Frequency can be set to 500, 1k, 1.5k, or 2.5k; while the Mid Q-Factor can
be set to 0.75, 1.0, 1.25, or 1.5. The Treble Frequency can be set to 7.5k,
10k, 12.5k, or 15k; while the Treble Q-Factory can be set to 0.75 or 1.25.
- Firmware: The AmpPRO app will also allow you to update the
interface with new firmware as it becomes available.
Note: These AmpPRO PC App settings can be adjusted with the module installed in the vehicle or
on the bench. However, it is recommended to make the adjustments with the module
installed, and the factory radio on so that the changes can be heard.
Dip Switch: Set dip switch 2 to "ON" to lower the RCA output voltage
to 4V. Set the dip switch 2 "OFF" to keep the RCA output voltage at 5V.
Dip switches 3-4 are used for troubleshooting Sync & Bluetooth. Dip
switch 1 is not used.
Optional Toslink Add-On Module: When used in conjunction
with PAC's APA-TOS1 (541APATOS1;
sold separately), the AP4-FD21 can provide a variable 2-channel fiber optic
digital audio output (toslink). Toslink fiber-optical cable also sold
Optional Amplifier Harness: The APH-FD01 installation harness
(541APHFD01, sold separately) simplifies speaker wire connections when using the
PAC AmpPRO AP4-FD21 (sold separately) to add an aftermarket amplifier or
amplifiers in select 2007-2017 Ford and Lincoln vehicles that feature factory
amplified sound systems. The APH-FD01 keeps you from having to cut or modify
your vehicle's original factory wiring, providing "plug-n-play" connection at
the vehicle's original factory amplifier location (you will need to make
hardwire connections at the aftermarket amplifier/s).
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