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Pacific Accessory Corporation
Page 1
Rev: 2
Date: 052721
®
Advanced Subwoofer Amplifier Interface
for Select Toyota / Lexus Vehicles
APSUB-TY12
Introduction and Features
Important Notes
1. Only compatible in vehicles equipped with a data bus controlled premium sound system. To verify compatibility in
Toyota, look for a JBL logo on the radio. In Lexus, compatible applications will have a center channel or factory
subwoofer.
2. If the vehicle is equipped with Toyota Safety Connect or Lexus Enform (SOS), the APSUB audio will need to be muted
when these systems are active. See the Tech Brief "Muting the APSUB during Safety Connect/Enform operation" at
PAC-audio.com for detailed instructions.
3. The factory radio's speed controlled volume, DSP, and surround sound mode are not supported by the APSUB outputs.
4.
The factory amplifier must remain connected, and in the vehicle after the APSUB has been installed.
5. The remote output is rated at 2A of current. If more current is needed, an external relay must be used.
6. The subwoofer channels are non-fading outputs. The output levels can be controlled using the supplied level control
knob.
7. The level control knob must be connected in order to manually adjust the minimum volume setting.
8. No adjustments can be made manually using the programming button when the module is connected to a PC.
9. Due to variations between various OEM radios and even between radio modes, the radio output voltage may vary
slightly from the selected 5 volt (or 4 volt when DIP switch 2 is down) output.
Wiring Connection Chart
To Aftermarket
Amplifier
Subwoofer Outputs
Remote Turn On Output
2A Max Output
To Radio
Non-Fading
Level Control
Knob
To Vehicle
Harness
28 - Pin
6 - Pin
10 - Pin
Remote Turn On Output (2A Max)
Mute Input From Navigation *
Mute Input From Telematics *
* See Page 2 Installation Notes for further details regarding the Mute Input leads.
The APSUB-TY12 provides a 2-channel non-fading output for use with an aftermarket amplifier and subwoofer. Using the
full range, fixed level head unit output, in conjunction data bus messages, the APSUB-TY12 delivers a variable 5v RMS
pre-amp output with bass equalization and level control capabilities. The signal has a 350Hz / 24dB Linkwitz-Riley low
pass filter applied. A data controlled remote amplifier turn on wire is also provided by the APSUB-TY12.