1. Introduction
This manual provides essential instructions for the safe and effective use of your T-Power AC Adapter. This adapter is designed to provide reliable power to compatible Brookstone Big Blue Party and Harman Kardon Onyx/Aura Studio Bluetooth wireless speakers. Please read this manual thoroughly before use and retain it for future reference.
2. Safety Information
- Voltage Compatibility: Ensure the wall outlet voltage matches the adapter's input voltage range (AC 100V - 240V).
- Indoor Use: This adapter is intended for indoor use only. Avoid exposure to moisture or extreme temperatures.
- Proper Connection: Always connect the adapter to the device before plugging it into a power outlet. Disconnect from the outlet first before unplugging from the device.
- Avoid Damage: Do not use the adapter if the cord or plug is damaged. Do not attempt to open or repair the adapter.
- Ventilation: Ensure adequate ventilation around the adapter during use to prevent overheating.
- Children and Pets: Keep the adapter and cables out of reach of children and pets.
3. Package Contents
Verify that your package contains the following items:
- 1 x T-Power AC Adapter
- 1 x AC Power Cord

Image: The T-Power AC Adapter shown with its detachable AC power cord, ready for connection.
4. Compatibility
This T-Power AC Adapter is designed for use with a wide range of Bluetooth wireless speakers. Please verify your speaker model number against the list below for compatibility:
Brookstone Speakers:
- Brookstone Big Blue Party Indoor-Outdoor Bluetooth Wireless Speaker (BIGBLUEPRTYV1.5, mp-849504)
- Brookstone Big Blue Studio Wireless Bluetooth Speaker (P/N: KSAS0451800200HU)
- Brookstone Big Blue Party X Indoor-Outdoor Bluetooth Speaker

Image: A grey Brookstone Big Blue Party speaker.

Image: A black Brookstone Big Blue Party speaker.
Harman Kardon Onyx Studio Series:
- Harman Kardon Onyx Studio 1 Wireless Speaker
- Harman Kardon Onyx Studio 2 Wireless Speaker (HKONYXSTUDIOG1, FBA_Onyx Studio, HKONYXSTUDIOJN, 6132A-ONYXST, TR00236_B, HarmanKardonOnyx2White, OW-XRDP-0NQU, ONYXSTUDIO2BLKUS, APIONYXST2)
- Harman Kardon Onyx Studio 3 Wireless Speaker (ONYXSTUDIO3R, HKONYXSTUDIO3BLKUS, ONYXSTUDIO3REDG1, ONYXSTUDIO3K, ONYXSTUDIO3BLUEG1, APIONYXST3)
- Harman Kardon Onyx Studio 4 Wireless Speaker (HKOS4BLKBSG, HKOS4BLKEU, HKOS4WHTBSG, HKOS4BLUBSG)
- Harman Kardon Onyx Studio 5 Wireless Speaker (Onyx5, HKONYXSTUDIO3BLKAM)
- Harman Kardon Onyx Studio Bluetooth Wireless Portable Speaker System (ESX2567Q, ESX-2567Q S,N FC0006 0534860, FC00060534860, FC005-0924799)
Harman Kardon Aura Studio Series:
- Harman Kardon Aura Studio Speaker
- Harman Kardon Aura 2 Studio Speaker
- Harman Kardon Aura 3 Studio Speaker
- Harman Kardon Aura 4 Studio Speaker
- Harman Kardon Aura 5 Studio Speaker

Image: A black, circular Harman Kardon Onyx Studio speaker.
Note: Always double-check your speaker's model number to ensure compatibility before connecting the adapter. If unsure, consult your speaker's original manual or contact T-Power support.
5. Setup
Follow these steps to set up your T-Power AC Adapter:
- Unpack: Carefully remove the AC adapter and power cord from the packaging.
- Connect Power Cord: Insert the AC power cord into the adapter's input port. Ensure it is firmly seated.
- Connect to Speaker: Insert the adapter's output plug into the charging port of your compatible Brookstone or Harman Kardon speaker.
- Connect to Power Outlet: Plug the AC power cord into a standard wall power outlet (AC 100V - 240V).
- Verify Connection: The adapter may feature a small blue LED light to indicate it is receiving power and functioning correctly.

Image: The T-Power AC Adapter with its power cord connected and ready for use.
6. Operating Instructions
Once properly connected, the T-Power AC Adapter will begin supplying power to your speaker. If your speaker has a charging indicator, observe it to confirm charging status.
- Charging: The adapter provides a stable 19V DC output, suitable for charging and powering your compatible speaker.
- LED Indicator: A small blue LED light on the adapter indicates that it is powered on and ready to deliver current.
- Disconnection: To disconnect, first unplug the adapter from the wall outlet, then carefully remove the plug from your speaker.
7. Maintenance
To ensure the longevity and optimal performance of your T-Power AC Adapter, follow these maintenance guidelines:
- Cleaning: Disconnect the adapter from all power sources before cleaning. Use a soft, dry cloth to wipe the surface. Do not use liquid cleaners or solvents.
- Storage: When not in use, store the adapter in a cool, dry place, away from direct sunlight and moisture. Avoid tightly coiling the cable to prevent damage.
- Inspection: Periodically inspect the adapter and cables for any signs of wear, cuts, or damage. Discontinue use if any damage is observed.
8. Troubleshooting
If you encounter issues with your T-Power AC Adapter, refer to the following common problems and solutions:
- No Power/Charging:
- Ensure the adapter is securely plugged into both the wall outlet and the speaker.
- Check if the wall outlet is functional by plugging in another device.
- Verify that the adapter's blue LED indicator is lit. If not, try a different outlet.
- Confirm that your speaker model is listed as compatible in Section 4.
- Adapter Overheating:
- Unplug the adapter immediately.
- Ensure it is not covered or placed in an enclosed space that restricts airflow.
- Allow it to cool down before attempting to use it again. If overheating persists, discontinue use.
- Physical Damage:
- If the adapter or cable shows signs of physical damage (e.g., frayed wires, bent connector), discontinue use to prevent electrical hazards.
If the problem persists after attempting these troubleshooting steps, please contact T-Power customer support.
9. Specifications
| Model Number | TP-BJ7-9ZI |
| Input Voltage Range | AC 100V - 240V |
| Output Voltage | 19V DC |
| Product Dimensions | 4 x 4 x 2 inches |
| Item Weight | 4 Ounces |
| Color | Black |
| Certifications | CE/FCC/RoHS certified |
10. Warranty and Support
T-Power products are manufactured with quality and reliability in mind. While specific warranty details are not provided in this manual, for any product inquiries, technical assistance, or warranty claims, please contact T-Power customer support directly.
You can often find support contact information on the product packaging or through the retailer where the product was purchased. For general information about T-Power, you may visit their store page: