Part 1

Audio System Description

Overview

The audio unit has a built in CD player. Audio units with navigation are referred to as audio-navigation units. These units combine the audio system, the navigation system, and the CD/DVD player into one unit.

The audio unit acts as the processor for all audio functions. Select audio functions from the audio switch panel buttons or the audio remote switch (on the steering wheel). The audio display provides the current audio status.

The audio unit has a built-in EEPROM (electrically erasable programmable read-only memory). This memory holds the audio presets (AM/FM radio frequency, sound settings, etc.) even when the battery is disconnected.

A security signal is daisy-chained between the audio and vehicle components for integration into the vehicle's security system.

There are two audio systems available for the Acura ZDX:

- With navigation, it includes surround sound with 10 speakers.
- Without navigation, it includes 8 speakers.










HDD Recording

The navigation system uses a HDD (hard disc drive) and can store music. To record music to the HDD, you must use an original CD or uncompressed CD-R files. The music must be loaded on a CD using the CD player. You cannot load music through the USB adapter or the auxiliary jack.

Song By Voice(TM) (with navigation)

You can use the voice control to operate the audio system, including the Song By Voice(TM) feature. See the Navigation Manual for more information.

Speed-Sensitive Volume Compensation (SVC)

All audio systems are equipped with speed-sensitive volume compensation (SVC). The audio-navigation unit or the audio unit receives the vehicle speed pulse (VSP) from the PCM. The system processes the speed input and increases the navigation system or the audio system volume level as the vehicle speed increases to compensate for the interior noise that occurs at higher speeds. When the vehicle slows down, the volume returns to its normal level. The SVC has four settings: SVC OFF, SVC LOW, SVC MID, and SVC HIGH that can be adjusted using the audio-navigation unit or the audio unit. The factory default setting is SVC MID.

To change the audio unit SVC setting, press the tune folder sound knob repeatedly until the SVC is displayed, then rotate the knob to adjust the SVC to the desired setting (SVC OFF, SVC LOW, SVC MID, or SVC HIGH).

To change the audio-navigation unit SVC setting, press the AUDIO button, and then select the Sound Setup from the AUDIO MENU on the navigation display. Rotate the interface dial to select the desired setting (SVC OFF, SVC LOW, SVC MID, SVC HIGH).

Active Noise Cancellation (ANC)/Active Sound Control System

Both the active noise cancellation (ANC) and active sound control are built into the ANC/active sound control unit. Both systems help eliminate unwanted sound from entering the passenger compartment. There are two microphones mounted in the headliner, one just behind the front overhead console and the other just ahead of the overhead rear light module. The microphones listen for low frequencies entering the passenger compartment and send a signal to the ANC/active sound control unit. The ANC/active sound control unit then creates a sound wave that is sent out through the speakers to eliminate the unwanted sound.

Active Noise Cancellation (ANC) System

The ANC system works to cancel engine booming sound up to about 2,000 rpm. The ANC/active sound control unit receives the engine speed pulse (NEP) from the PCM and outputs a sine-wave-sound through the audio speakers to cancel low-frequency noise from the engine. The ANC system also uses two microphones to detect and monitor low frequency noise in the passenger compartment. The microphones feed information back to the audio unit which adjusts the speaker output to reduce the noise. The ANC also receives input from the door open/close (INTR LT) signal from the MICU. Anytime a door is opened, the ANC system temporarily stops working.






Active Sound Control System

The active sound control is the next generation of eliminating unwanted sound in the passenger compartment. The active sound control has a much broader range than the ANC system. In addition to the microphones in the headliner, the active sound control also receives input from the engine speed pulse (NEP) to provide various levels of sound cancelling depending on changes in the engine RPM.

Telematics Muting Logic

The navigation system provides voice control for the audio, the XM, and the CD player. The navigation system uses the GA-Net bus to communicate the voice control commands to the audio unit. When using the TALK/BACK buttons, the front and the rear speakers are muted and you hear the navigation instructions through the center speaker. When using the route guidance (RG), the center speaker provides the navigation sound and the front and the rear speakers continue to play the audio. When using the HFL/AcuraLink, the center speaker and the rear speakers are muted and the front speakers give the telephone sound. When using the HFL/AcuraLink and the RG or the talk back, the rear speakers are muted and you hear the telephone sound and navigation instructions through the front speakers. Muting commands are passed on the GA-Net bus. For more information, see the navigation section. The outline of the audio interruption function is shown in the following table.






Bluetooth Audio

Bluetooth audio allows approved Bluetooth cell phones equipped with music function to play music via a car audio system using Bluetooth technology. You can control the cell phone's music player remotely using the wireless connection.

- You can play music stored in your cell phone using the wireless connection*1.
- You can choose next song, previous song and resume/pause via wireless*2.





Supported Devices

- Bluetooth music phones that support AVRCP 1.0.
- Bluetooth adapters for portable music devices including iPod are not supported.

NOTE:

- Availability of the functions depends on the connected phone.
- The latest support information is updated through the website www.acura.com/handsfreelink.

Pairing a Cell Phone

To pair a cell phone, refer to pairing a cell phone in the HandsFreeLink system. Once a cell phone is paired, the process does not have to be repeated for the cell phone.