Blitzwolf BlitzMax BM-LE505 Bluetooth Transmitter Receiver

Introduction

The Blitzwolf BlitzMax BM-LE505 is a versatile Bluetooth 5.3 adapter designed to enhance your audio experience. It functions as both a transmitter (TX) and a receiver (RX), allowing you to wirelessly stream audio to and from various devices. Whether you want to connect your wired headphones to an in-flight entertainment system, enable your TV to stream audio to Bluetooth headphones, or add Bluetooth receiving capabilities to your wired speakers, the BM-LE505 provides a high-fidelity, low-latency solution.

Figure 1: BlitzMax BM-LE505 Bluetooth Adapter (Black Version)

Figure 2: BlitzMax BM-LE505 Bluetooth Adapter (White Version)

Product Overview

Package Contents

Upon unboxing your BlitzMax BM-LE505, you should find the following items:

• 1 x BlitzMax BM-LE505 Bluetooth Transceiver
• 1 x Product Manual
• 1 x Type-C Charging Cable
• 1 x 3.5mm Audio Cable
• 1 x Storage Bag

Figure 3: What's Included in the Box

Key Features

• Advanced Bluetooth 5.3 Chip: Ensures stable connection, faster transmission speed, and high-quality audio.
• AptX Low Latency: Supports multiple audio encodings in TX mode, reducing audio delay to less than 40 milliseconds for synchronized sound and image.
• Long Battery Life: Built-in 250mAh battery provides up to 20 hours in RX mode and 12 hours in TX mode on a full 2-hour charge via Type-C.
• Dual Pairing Support: Connects to two Bluetooth headsets/speakers in TX mode or two Bluetooth devices in RX mode, allowing shared audio experiences.
• Travel-Friendly Design: Compact and lightweight (only 17.5g) for easy portability, fitting into pockets or bags.
• Wide Compatibility: Works with various audio devices including PCs, TVs, smartphones, tablets, wired speakers, and car stereos.
• Stable Transmission Range: Offers a working range of up to 10 meters (33 feet).

Figure 4: Advanced Bluetooth 5.3 Technology

Figure 5: Battery Life and Charging

Figure 6: Travel-Friendly Design and Dimensions

Specifications

Setup Instructions

Transmitter (TX) Mode Setup

Use TX mode to transmit audio from a non-Bluetooth device (e.g., TV, PC, in-flight entertainment) to Bluetooth headphones or speakers.

1. Switch to TX Mode: Locate the switch on the side of the BM-LE505 and slide it to the 'TX' position.
2. Connect to Audio Source: Plug one end of the included 3.5mm audio cable into the BM-LE505's audio jack and the other end into the audio output port of your PC, TV, or other audio output device.
3. Enter Pairing State: Click either the 'A' or 'B' pairing button on the device. The corresponding 'A' or 'B' light will flash quickly, indicating it's in pairing mode.
4. Connect Bluetooth Device: Turn on your Bluetooth headphones or speaker and put them into pairing mode. Select the BM-LE505 from your device's Bluetooth list (it may appear as 'BM-LE505' or similar). Once connected, the 'A' or 'B' light on the BM-LE505 will remain steadily lit.

Figure 7: TX Mode Setup Guide

Receiver (RX) Mode Setup

Use RX mode to receive audio from a Bluetooth-enabled device (e.g., smartphone, tablet, Bluetooth laptop) and output it to a non-Bluetooth audio system (e.g., wired speakers, car stereo).

1. Switch to RX Mode: Locate the switch on the side of the BM-LE505 and slide it to the 'RX' position.
2. Connect to Audio Output Device: Plug one end of the included 3.5mm audio cable into the BM-LE505's audio jack and the other end into the AUX input of your wired speaker, car stereo, or other audio playback device.
3. Enter Pairing State: Click either the 'A' or 'B' pairing button on the device. The corresponding 'A' or 'B' light will flash quickly, indicating it's in pairing mode.
4. Connect Bluetooth Device: On your smartphone, tablet, or Bluetooth-enabled laptop, go to Bluetooth settings and search for available devices. Select 'BM-LE505' (or similar) to connect. Once connected, the 'A' or 'B' light on the BM-LE505 will remain steadily lit.

Figure 8: RX Mode Setup Guide

Operating Instructions

Pairing Additional Devices (Dual Pairing)

The BM-LE505 supports dual pairing, allowing you to connect two Bluetooth devices simultaneously.

• In TX Mode: After successfully pairing the first Bluetooth headset/speaker, put the second Bluetooth headset/speaker into pairing mode. Then, press the unused 'A' or 'B' button on the BM-LE505 to initiate pairing with the second device. Both devices will then receive audio from the source.
• In RX Mode: After successfully pairing the first Bluetooth device (e.g., phone), put the second Bluetooth device (e.g., tablet) into pairing mode. Then, press the unused 'A' or 'B' button on the BM-LE505 to initiate pairing with the second device. You can then switch between the two connected Bluetooth devices to play audio.

Figure 9: Dual Pairing Functionality

Switching Audio Codecs (TX Mode)

In TX mode, the BM-LE505 supports various audio codecs, including SBC, AAC, aptX, Adaptive, aptX HD, and aptX LL (Low Latency). To switch between these codecs:

• Double-click the corresponding 'A' or 'B' key that is currently active to cycle through the available audio CODECs. The indicator light will change to reflect the active codec.

Figure 10: AptX Low Latency and Codec Switching

Maintenance

• Cleaning: Use a soft, dry cloth to clean the device. Avoid using harsh chemicals or abrasive materials.
• Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures. Use the provided storage bag for protection when not in use.
• Battery Care: To prolong battery life, avoid fully discharging the device frequently. Charge it regularly, even if not in constant use.

Troubleshooting

• Device not turning on: Ensure the device is charged. Connect it to a power source using the Type-C cable and allow it to charge for at least 30 minutes before attempting to turn it on again.
• Cannot pair with a Bluetooth device:
  • Ensure the BM-LE505 is in the correct TX or RX mode.
  • Make sure the BM-LE505 is in pairing mode (flashing A/B light).
  • Ensure your target Bluetooth device (headphones, speaker, phone) is also in pairing mode.
  • Move the devices closer to each other.
  • Clear the Bluetooth pairing history on both the BM-LE505 (if possible, by holding down a pairing button for an extended period) and your target device, then try pairing again.
• No sound or poor audio quality:
  • Check all cable connections (3.5mm audio cable) are secure.
  • Ensure the volume on both the source device and the receiving device is turned up.
  • Verify that the correct audio input/output is selected on your source/receiving device.
  • If in TX mode, try switching audio codecs by double-clicking the active A/B button.
  • Reduce the distance between the BM-LE505 and the connected Bluetooth device, and ensure there are no major obstructions.
• Short transmission range: Ensure there are no significant physical obstructions (walls, large furniture) between the BM-LE505 and the connected Bluetooth device. Other wireless devices operating on the 2.4GHz band might cause interference.

User Tips

• Pre-charge for travel: Fully charge the device before long trips to maximize its 12-20 hour battery life, especially for in-flight entertainment.
• Keep it close: For the most stable connection and best audio quality, try to keep the adapter within 10 meters (33 feet) of your connected Bluetooth device.
• Experiment with codecs: If you experience audio lag in TX mode, try cycling through the available AptX codecs by double-clicking the A/B button to find the best performance for your setup.

Warranty and Support

For warranty information or technical support, please refer to the official BlitzWolf website or contact the seller directly. Keep your purchase receipt as proof of purchase for any warranty claims.