Wondom JAB3+ Portable PA Speaker
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Bill of Materials
- Wondom TPA250 DSP BT Endstufe JAB3+ x 1: Gekauft bei Boomaudio
- Wondom 6S 21700 Akku- Board - BCPB6 x 1: Gekauft bei Boomaudio
- 21700 Akuzelle x 6: Gekauft bei Amazon
- MDF 12mm Dicke x 1: Ich habe 3m^2 gekauft um 32€. Habe Ca 1m^2 gebracuht
- Heat Set Insert M5 x 9.5 - 50 pieces x 4: https://cnckitchen.store/products/heat-set-insert-m5-x-9-5-50-pieces
Description
Wondom JAB3+ Portable PA Speaker – 100 W RMS Backpack System
This project details a fully portable, battery-powered PA speaker featuring a high-performance 12″ full-range driver—designed for maximum efficiency and straightforward mobile use.
At its core is the Wondom JAB3+ Mono amplifier (TPA3116, Class-D) delivering up to 100 W RMS output power. Power is supplied by a 6S Li-ion battery pack (21700 cells) combined with the Wondom BCPB6 Battery Management Board, which includes an integrated MPPT charge controller—ideal for solar power or DC chargers.
The enclosure provides an internal volume of approximately 42 liters in a classic bass reflex design. A Fane Sovereign 12-250TC is used as the driver—a 12″ full-range speaker with high sensitivity, operable without an additional crossover.
The entire system is integrated into a modified backpack, making it ideally suited for:
- Festivals
- Busking
- Mobile DJ operation
- Outdoor events
- Volleyball courts
- Camping
🔧 Assembly & Materials
- Material: 12 mm thick MDF boards
- Bonding: Glued with standard wood glue
- Note: Screws were generously used for stability—more than actually necessary 😅
High-quality M5 threaded inserts from CNC-Kitchen were used in the electronics box. These ensure durable, reusable screw connections in the plastic—ideal for maintenance and modularity.
💡 Practical Tip
Be sure to carefully read the product datasheets for the Wondom components!
I strongly recommend purchasing the appropriate CABLE SETS for the JAB3+ and BCPB6—this saves a tremendous amount of time and effort during wiring.
Technical Data
| Component | Description |
|---|---|
| Amplifier | Wondom JAB3+ Mono, TPA3116, Class-D, 100 W RMS |
| Speaker | Fane Sovereign 12-250TC, 12″ Fullrange |
| Enclosure Volume | 42 liters, Bass Reflex |
| Battery | 6S Li-ion (21700) approx. 100 Wh, controlled via BCPB6 Board |
| Charging Function | MPPT solar input + DC charging options (via Wondom BCPB6) |
| Outputs | 4x DAC, optionally mono or stereo |
| Operation | completely self-sufficient, Bluetooth streaming possible, AUX |
| Special Feature | Transportation as a backpack (See photos) |
Features
- Portable PA speaker with Bluetooth, battery, and Class-D amplifier
- Compatible with 5–26 V input voltage thanks to integrated MPPT
- Over 10 hours of runtime at medium volume (depending on the battery pack)
- No separate DSP needed—ready to use
- Works out of the box
- For festivals, busking, outdoor events, or mobile DJ sets
- Simple assembly with readily available components
- Supports solar or mains charging (electronics box only has a 5 to 26V DC connection open)
License
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