Alpine PXE-640E-EL 6-Sound Track Audio Processing Amplifier

Operating Instructions

Type of Precautions

Prohibited: Indicates a prohibited action (must not be performed).

Prohibited: Indicates that disassembly is prohibited.

Mandatory: Indicates a mandatory operation (must be performed).

Attention: Indicates that it should draw your close attention.

Warning: In case of problems, stop using the device immediately. Otherwise, it may result in personal injury or damaged product. Return the product to the authorized Alpine dealer or nearby Alpine service center for repair.

The product is only suitable for 12V negative-grounded vehicles. Otherwise, it may lead to an accident like fire, etc.

Please call a professional for wiring and installation: It needs professional expertise and experience to wire and install the product. Please contact the dealer from whom you bought the product to install it for safety.

Please do not disassemble or refit: Otherwise, it may result in an accident, fire or electric shock.

Small items like bolts or screws should be kept out of the reach of children. If ingested, it may result in severe damage. Seek medical attention immediately.

Please do not use any function that may distract you during driving.

Caution: Any device function that may influence your attention must be used only when the vehicle is stopped completely. To use these functions, stop your vehicle in a safe area first. Otherwise, it may result in an accident.

During driving, maintain the volume at a level such that the noise outside can still be heard. It is very dangerous not to clearly hear an emergency vehicle alarm and road warning signal, and may result in an accident. Moreover, a too-large volume may damage your hearing.

Product cleaning

Please clean the product regularly with a soft dry cloth. For any dirt difficult to clean, only water can be used to soak the cloth. Any other solvents may lead to dissolution.

Temperature

Before starting the device, ensure that the temperature inside the vehicle is between +60°C and -20°C.

Repair

In case of problems, please do not repair them by yourself. Return the product to the authorized Alpine dealer or nearby Alpine service center for repair.

System matching

When PXE-640E-EL is used with active division mode to assign signals for speakers, ensure that the frequency division point of high pitch is above 1500 Hz to avoid damage to high-pitch speakers.

Installation site

The device cannot be installed at the following locations:

• Under direct sunlight and near a hot source.
• With high humidity and near a water source.
• Dusty sites.
• Environments with violent vibration.

Copyright notice

The text mark and logo of Bluetooth® are the registered trademarks held by Bluetooth SIG, Inc. Alpine Electronics has been authorized to use these text marks and logos. Other trademarks and names all belong to their holders.

* Electronic products should be discarded via an appropriate recycling channel to reduce electronic waste pollution.

Tools that may be required (depending on the vehicle)

Accessory list

Diagram of device interfaces

Top View:

Shows various input/output ports and power connections. Includes labels for:

• 1: Vehicle audio player (sold separately)
• 2: Power and high voltage level input/output interface
• 3: Input select switch interface
• 4: Power lamp
• POWER, HOST ACC: Power and accessory connections

Bottom View:

Shows output connections and USB interface. Includes labels for:

• OUTPUT: Speaker outputs (CH-5, CH-6)
• 5: RCA audio out
• 6: USB 2.0 interface
• PC connection
• External power amplifier (sold separately)

* The device is embedded with Bluetooth.

Description of device interfaces and their functions

Wire pin arrangement

Diagram showing the back panel with numbered pins and corresponding wire colors and functions:

• 1 (11): Red 20AWG - ACC
• 2 (12): Black 18AWG - GND
• 3 (13): Purple 20AWG - Rear right channel input +
• 4 (14): Green / Black 20AWG - Rear left channel input -
• 5 (15): White 20AWG - Front left channel input +
• 6 (16): Grey / Black 20AWG - Front right channel input -
• 7 (17): Grey 20AWG - Front right channel input +
• 8 (18): Green 20AWG - Rear left channel output +
• 9 (19): White / Black 20AWG - Front left channel output -
• 10 (20): White 20AWG - Front left channel output +
• Purple 20AWG: Rear right channel output +
• Purple / Black 20AWG: Rear right channel output -
• Blue / White 20AWG: REM OUT

Description of mobile APP - General User

The mobile application allows control and tuning of the amplifier.

• 1 Master volume: Adjust volume using a fader or +/- buttons (0-35 range).
• 2 Mute button: Mutes the master volume.
• 3 Connection indicator: Shows Bluetooth connection status (red for not connected, green for connected).
• 4 Menu bar: Access device version information.
• 5 Mode switch: Switches between General User and Professional User modes.
• 6 Homepage: Provides quick operations like audio source switch, pre-set sound effects recall and saving, and device version check.

Description of mobile APP - Professional User

The Professional User mode offers advanced tuning capabilities.

• 1 Menu bar: Access to various functions including encryption, shutdown delay, sound effect sharing/saving, online/local effects, device temperature, EQ gain steps, and version number.
• 2 Mode switch: Switch between General User and Professional User modes by entering a 6-digit password (e.g., "888888").
• 3 Interface selection: Access to tuning functions: Homepage, EQ, Channel, Delay, and Frequency combination.

Description of mobile APP - Homepage

This section of the app manages audio sources and pre-set sound effects.

• 1 Master audio source: Select between High Level and Bluetooth.
• 2 Master audio source attenuation: Adjusts attenuation from 0% to 100%, affecting master volume.
• 3 Auxiliary audio source: Select between High Level, Bluetooth, and OFF.
• 4 Pre-set sound effects: Save or recall multiple pre-set sound effects.

Caution: If the current audio source mode is selected, it cannot be superimposed. Otherwise, the auxiliary audio source will be invalid.

Description of mobile APP - EQ

This section allows for Equalizer adjustments.

• 1 Output channel: Select the output channel (CH-1 to CH-6) for EQ adjustment.
• 2 Parametric EQ, Graphic EQ: Switch between Parametric and Graphic EQ modes. Note: switching modes may reset settings.
• 3 Gain: Adjust the gain using a fader (-12.0dB to +12.0dB range).
• 4 Frequency, Q value, Gain: Adjust frequency, Q value, and gain. In Graphic EQ, frequency and Q value are fixed. In Parametric EQ, all are adjustable.
• 5 Reset EQ: Resets the EQ settings.
• 6 Restore EQ, Direct EQ: Switches to direct state or restores previous EQ data.

Description of mobile APP - Channel

This section manages individual channel settings.

• 1 Debugging: Options to copy channel EQ/volume settings.
• 2 Locking: Locks the current channel type.
• 3 Reset channel type: Clears or sets the channel type to default.
• 4 Channel gain: Adjusts channel volume (-60dB to +6dB range).
• 5 Channel phase: Selects normal or reverse phase.
• 6 Channel type: Selects the output channel type (e.g., full frequency, high-frequency, ultralow frequency).
• 7 Divider: Turns the low-pass filter on or off.
• 8 Filter type: Selects filter type (Linkwitz-Riley, Butterworth, Bessel).
• 9 Filter slope: Selects the filter slope (-6dB/Oct to -48dB/Oct).
• 10 Divider frequency: Sets the divider frequency (20Hz to 20kHz).

Description of mobile APP - Delay

This section allows for setting audio delay for each channel.

• 1 Speaker: Mute or unmute individual speakers/channels.
• 2 Delay setting: Adjust delay using a fader or +/- buttons.
• 3 Unit of delay: Select units for delay (ms, cm, inch).
• 4 Delay group: Choose from 3 delay groups for each channel.

Description of mobile APP - Frequency combination

This section handles sound mixing and frequency mixing.

• 1 Active or passive output: Keep the default setting as "Passive". Warning: changing this will clear sound mixer settings.
• 2 Input channel: Adjust the volume of each audio source in the channel for sound and frequency mixing. Caution: Set total volume to 100 to avoid clipping.

Interface of PC software

The PC software provides comprehensive control and tuning options for the amplifier.

Key features include:

• Temperature display: Detects device surface temperature.
• File: Load/save scene files.
• Options: Firmware update, noise gate, factory reset, shutdown delay, language switch (English/Chinese), version check.
• Encryption: Encrypts sound effect data with a 6-digit password.
• EQ gain step size: Adjusts step size (0.1dB to 1.0dB).
• Mute button: Mutes the master volume.
• Master volume: Adjusts master volume (0-35 range).
• Homepage: Manages audio sources, pre-set sound effects, and online sound effects.
• EQ: Accesses the professional tuning interface for EQ adjustments.
• Delay: Sets delay values, units, and groups.
• Frequency combination: Configures sound and frequency mixing.
• Output channel display: Shows the output channel curve.
• EQ curve: Displays current EQ curve, sets frequency, Q value, and gain.
• Frequency, Q value, Gain: Adjusts these parameters, with parametric EQ offering full adjustability.
• Parametric EQ, Graphic EQ: Switches between modes.
• Low-pass filter / High-pass filter: Cut off frequencies, select filter types, frequencies, and slopes.
• Channel phase: Selects normal or reverse phase.
• Channel gain: Adjusts channel gain/volume (-60dB to +6dB).
• Reset channel type: Clears or defaults channel type.
• Locking: Locks the current channel type.
• Debugging: Options for copying channel EQ/volume.
• Direct EQ, Restore EQ: Switches to direct state or restores EQ data.
• Reset EQ: Resets EQ settings.
• Output channel: Configures output channel type.
• Connection indicator: Connects/disconnects PC via USB.

Description of PC software

Specification parameters

Diagrams showing the physical dimensions and connection points of the amplifier are included.

Functional parameters