Introduction
The Power Acoustik PL-51B is a single-DIN in-dash digital audio receiver designed to enhance your in-vehicle audio experience. This unit features Bluetooth connectivity for hands-free calling and wireless audio streaming, along with multiple media playback options including USB, SD card, and AUX input. Its mechless design ensures durability by eliminating moving parts associated with CD players.
Figure 1: Power Acoustik PL-51B Digital Audio Head Unit and included remote control.
Key Features
- Single-DIN In-Dash Design: Standard size for easy integration into most vehicle dashboards.
- Mechless Receiver: No moving parts for increased durability and reliability.
- Bluetooth v3.0: Supports hands-free calling and A2DP wireless MP3 audio playback.
- Multiple Media Inputs: MP3 & MP4 playback from 32GB SD Card/USB.
- ID3 MP3 Tag Reading: Displays track and artist information for compatible MP3 files.
- Theft-Deterrent: Detachable faceplate for added security.
- AM/FM Tuner: Integrated radio tuner for broadcast reception.
Setup and Installation
Installation of the PL-51B unit requires basic automotive electrical knowledge. It is recommended to have the unit professionally installed if you are unfamiliar with car audio wiring.
1. Wiring Connections
Refer to the wiring diagram provided in the included installation guide for specific connections. Key connections typically include:
- Power: Constant 12V (Yellow), Accessory 12V (Red), Ground (Black).
- Speakers: Connect speaker wires to the corresponding positive (+) and negative (-) terminals for each speaker (Front Left, Front Right, Rear Left, Rear Right).
- Antenna: Connect the vehicle's antenna cable to the unit's antenna input.
- Remote Turn-On: (Blue) for external amplifiers or power antennas.
2. Mounting the Unit
The PL-51B is a single-DIN chassis size. Secure the unit into the vehicle's dashboard using the provided mounting sleeve and hardware. Ensure all connections are made before fully securing the unit.
3. Detachable Faceplate
The faceplate is detachable for theft deterrence. To attach, align the faceplate with the main unit and gently push until it clicks into place. To detach, press the release button (usually labeled "REL" or similar) and pull the faceplate away.
Operating Instructions
1. Basic Controls
- Power ON/OFF: Press the MODE button briefly to turn the unit on. Press and hold to turn off.
- Volume Control: Rotate the large central knob to adjust the volume level.
- Mode Selection: Press the MODE button repeatedly to cycle through available audio sources (FM, AM, Bluetooth, USB, SD, AUX).
- Band/AMS: In radio mode, press BAND/AMS to switch between FM1, FM2, FM3, and AM bands. Press and hold for Automatic Memory Store (AMS) to scan and save strong stations.
- Track Skip/Search: Use the >>| and |<< buttons to skip tracks in media playback or tune radio frequencies.
2. Bluetooth Operation
The PL-51B supports Bluetooth v3.0 for hands-free calling and wireless audio streaming.
- Pairing:
- Ensure Bluetooth is enabled on your mobile device.
- Select "Bluetooth" mode on the head unit. The unit will typically display "BT PAIRING" or similar.
- On your mobile device, search for available Bluetooth devices and select "PL-51B" (or similar name).
- If prompted, enter the pairing code (usually "0000").
- Once paired, the unit will display "BT CONNECTED".
- Hands-Free Calling:
- When a call comes in, the unit will display the caller ID (if supported).
- Press the Answer button (often a green phone icon) on the unit or remote to accept the call.
- Press the End Call button (often a red phone icon) to end the call.
- Audio Streaming (A2DP):
- Once paired, select "Bluetooth" mode.
- Start playing audio on your mobile device. The audio will stream wirelessly to the head unit.
- Use the unit's controls or your phone to play/pause and skip tracks.
3. USB/SD Card Playback
The unit supports MP3 and MP4 playback from USB drives and SD cards up to 32GB.
- Insert a USB drive into the USB port or an SD card into the SD card slot.
- The unit will automatically switch to USB or SD mode and begin playback.
- Use the >>| and |<< buttons to navigate tracks.
- The unit supports ID3 MP3 tag reading, displaying track and artist information on the LCD.
4. AUX Input
Connect external audio devices (e.g., MP3 players, smartphones without Bluetooth) using a 3.5mm audio cable to the AUX input jack on the front panel.
- Connect your device to the AUX input.
- Select "AUX" mode on the head unit.
- Control playback directly from your connected device.
5. FM/AM Radio
- Select "FM" or "AM" mode using the MODE button.
- Use the >>| and |<< buttons for manual tuning or seek.
- Press BAND/AMS to cycle through FM1, FM2, FM3, and AM bands. Press and hold to automatically scan and store strong stations.
Video 1: Product Overview - Demonstrates the unit's features and interface.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the unit's faceplate and display. Avoid abrasive cleaners or solvents.
- Detachable Faceplate: Regularly detach and reattach the faceplate to ensure proper contact and functionality. Store the faceplate in a protective case when removed from the vehicle.
- Firmware Updates: Check the Power Acoustik website periodically for any available firmware updates for your model.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No Power | Incorrect wiring; Blown fuse; Vehicle battery issue. | Check all power connections (Yellow, Red, Black). Inspect the unit's fuse and replace if necessary. Verify vehicle battery voltage. |
| No Sound | Incorrect speaker wiring; Volume too low; Mute activated; Incorrect audio source. | Check speaker connections. Increase volume. Deactivate mute. Select correct audio source. |
| Bluetooth Not Connecting | Device not in pairing mode; Incorrect pairing code; Interference. | Ensure Bluetooth is enabled on both devices and in pairing mode. Re-enter pairing code. Move closer to the unit. Reset Bluetooth settings on both devices. |
| USB/SD Card Not Reading | Unsupported file format; Corrupted media; Incompatible storage size. | Ensure files are MP3/MP4 format. Reformat media or try a different USB/SD card. Max capacity is 32GB. |
| Radio Static/Poor Reception | Weak signal; Antenna not connected properly; Interference. | Check antenna connection. Try tuning to a stronger station. Move away from sources of electrical interference. |
Specifications
- Model: PL-51B
- Brand: Power Acoustik
- Chassis Size: Single-DIN
- Display Type: LCD
- Item Weight: 1.1 pounds
- Product Dimensions: 4.5 x 7.25 x 2 inches
- Connectivity Technology: Auxiliary, Bluetooth
- Special Features: Built-In Bluetooth, FM Tuner, Detachable Face
- Memory Card Slot: SD Card (up to 32GB)
- Media Playback Supported: MP3, MP4
- Connector Type: 3.5mm Jack, USB
- Audio Output Mode: Stereo
- Surround Sound Channel Configuration: 4.0
- Color: Black
Warranty & Support
The Power Acoustik PL-51B comes with a 1-year manufacturer's warranty. For warranty claims, technical support, or additional product information, please refer to the contact details provided in your product packaging or visit the official Power Acoustik website.
