JAB Series 2 x 30 Watt Class D Audio Amplifier Board - JAB2 (AA-JA32472)
Key Features
- 3.6 x 2.7 Inches PCB Size
- Bluetooth V4.0 APT-X + EDR, A2DP
- Power Management
- Disconnection from Lithium Battery
- Higher Output Power with Power Adapter
- Anodizing Aluminum Heatsink (2 x 50 Watt)
- PBTL Configurable
- LED Indicators Ports (Power, Battery Charging & Bluetooth)
- 3.5mm AUX Port
- Volume Control Port (Potentiometer)
- Power Switch Port
Electrical Specifications
Specifications typical @ +20°C, Powered by 19V DC, unless otherwise noted. Specifications subject to change without notice.
| Parameter | Conditions | Min. | Typ. | Max. | Units |
| Power Supply Range | 19 | 24 | VDC | ||
| Idle Power/Current | SD short to GND, BT Disconnected | - | 37 | 50 | mA |
| BT Connected | - | 42 | 55 | mA | |
| Standby Power/Current | SD short to GND, only when low power module available | - | 2.9 | 5 | mA |
| Battery Undervoltage Protection* | - | 10.4 | 10.5 | V | |
| Constant Charging Voltage | - | 12.3 | 12.7 | V | |
| Charge Current | - | 0.5 | 1 | A |
*Battery Undervoltage Protection point is preset to 10.4V in order to protect Lithium-Ion battery, LiFePo4 battery is strictly prohibited and not supported by default. For any change to this battery protection setting, an MOQ of 500pcs will be applied.
Typical Performance Graphs
Specifications typical @ +20°C, Powered by 19V DC, unless otherwise noted. Specifications subject to change without notice.
| Parameter | Conditions | Min. | Typ. | Max. | Units |
| Gain | 19V @ 8 Ω | 18 | 20 | 22 | dB |
| Output Power | 19V @ 8 Ω | - | 2 x 30 | - | W |
| THD | 19V @ 8 Ω, 10W, 1KHz | - | 0.07 | - | % |
| Output Noise Level | A-weighting, Input Connected to GND | - | 213 | - | μV |
| SNR | 19V, 10W @ 8 Ω, THD+N=1% | - | 89.3 | - | dB |
THD+N vs Frequency Plot: A graph showing Total Harmonic Distortion plus Noise (THD+N) as a percentage versus frequency in Hertz. It indicates low distortion levels across the audio spectrum, particularly at 10W output power into an 8-ohm load with a 12V supply.
FFT Level Plot: A frequency spectrum analysis plot showing signal level in dBV versus frequency in Hertz. This graph illustrates the noise floor and potential harmonic content of the amplifier's output under specific test conditions (e.g., 0W output, 8-ohm load, 12V supply).
Thermal Image: A thermal image of the amplifier board under load, displaying temperature distribution. It shows the heatsink and surrounding components, indicating typical operating temperatures and heat dissipation patterns.
Distributors
- Parts Express
- MCM
- Axiomedia
- Hobbyhifiladen
- Audiophonics
- Yokohama Bayside Net
Compliance and Contact Information
All Audio Amplifier boards are complied with ROHS and they are pre-tested with our power supply solution to comply with FCC and CE. FCC, CE, and RoHs certifications can be provided upon request for customers who apply for bulky purchasement of MOV USD$10,000 or MOQ 500pcs.
Ready for: FCC, CE
Contact Info: Email: info@wondom.com
Notes on Performance and Modifications
Sure Electronics can modify the JAB series cutoff frequency using a first-order crossover filter according to customer requirements. A 500-piece MOQ applies. Contact info@sure-electronics.com for more details.
All parameters were tested with Rohde & Schwarz UPV audio analyzer (AES17 filter enabled) and Audio Precision AUX0025 filter. For authorized distributors and OEM customers needing more detailed performance graphs and parameter settings, please send an inquiry email. This information is not available for retail customers.
LED Indicators for JAB2
| LED Status | LED1 (Bluetooth) | D4 (MPPT Charging) | J7 (MPPT Charging) | J8 (Bluetooth) | J9 (Power) | LED On Extension Board | Function |
| On Board | ON | / | Blinking or ON | Blinking or ON | / | Bluetooth working properly | |
| Blinking | / | OFF | OFF | / | Bluetooth searching for network | ||
| Extended Ports | / | / | ON | ON | / | Red LED (Power) | MPPT Charging |
| / | / | Blinking | Blinking | / | ON | MPPT Charging finished | |
| / | / | OFF | OFF | / | OFF | Bluetooth working properly | |
| / | / | / | / | ON | Bluetooth searching for network | ||
| / | / | / | / | OFF | Working | ||
| LED On Extension Board | Green LED (3.5mm AUX) | Not Working | |||||
| ON | Working | ||||||
| Not Working | |||||||
| 3.5mm AUX Connected |
Note: The LED lights for extended ports have three colors, which are red, green, and blue. The LED color for each port is at random.
Product Notes
- 1. The output power is rated at the condition THD+N 10%, 1kHz sine wave.
- 2. This amplifier board employs power supply reverse polarity protection. Stresses beyond the power supply range maximum ratings may cause permanent damage.
- 3. Non-typical load may cause rated power reduction.
- 4. Dimensions refer to the length and width of the PCB only, excluding excessive parts outside the PCB outline.
- 5. All parameters were tested with Rohde & Schwarz UPV audio analyzer (AES17 filter enabled) and AP AUX0025 filter. Linear Power Supply units were used for testing.
- 6. Sure Electronics guarantees a product lifecycle of more than 5 years for all standard products. Sure Electronics reserves the right to update the version without notice. Products sent to retail customers are the latest version. A back-to-order service (100 Pieces MOQ) is available for distributors.
- 7. For details on connecting cables, refer to the JAB Connectors section. For power supply requirements, please contact Sure Electronics.
Mechanical Dimensions
All dimensions are typical in inches/mm. Tolerance x.xx = ±0.02(±0.50). Height tolerance x.xx = ±0.2inch/ 5mm for AA-JA32151/AA-JA32472 (0.48inch/12.2mm) and AA-JA32171 (0.79inch/20.1mm). Board height is measured from the bottom to the top of components.
| Dimensions | A (inch/mm) | A1 (inch/mm) | B (inch/mm) | B1 (inch/mm) | D (inch/mm) |
| #1 | 3.60/91.44 | 3.30/83.8 | 2.70/68.6 | 2.40/61.0 | 0.14/3.6 |
A diagram illustrating the board's physical dimensions, labeled A, A1, B, B1, and D, corresponding to the table values.
Connections
A diagram showing the layout of various connectors on the JAB2 amplifier board, including Speaker Output, Extension, Switch Control, Battery Charging, Volume Control, Power, and LED Indicators.
Speaker Output Connector: J2 MOLEX-4PIN-3MM
| Pin | Definition |
| 1 | ROUT- |
| 2 | LOUT+ |
| 3 | ROUT+ |
| 4 | LOUT- |
Extension Connector: J6 PH-10PIN-2MM
| Pin | Definition |
| 1 | LED2 |
| 2 | EN |
| 3 | RIN |
| 4 | GND |
| 5 | LIN |
| 6 | KEY1 |
| 7 | GND |
| 8 | GND |
| 9 | VCC |
| 10 | VCC |
Switch Control Connector: J5 PH-2PIN-2MM
| Pin | Definition |
| 1 | FN |
| 2 | GND |
Battery Charging Connector: J1 PH-4PIN-2MM
| Pin | Definition |
| 1 | GND |
| 2 | GND |
| 3 | VBAT |
| 4 | VBAT |
Volume Control Connector: J11 PH-6PIN-2MM
| Pin | Definition |
| 1 | LIN |
| 2 | GND |
| 3 | GND |
| 4 | ROUT |
| 5 | GND |
| 6 | RIN |
Power Connector: J3 MOLEX-2PIN-3MM
| Pin | Definition |
| 1 | VCC |
| 2 | GND |
LED Indicator Connectors: J7, J8, J9 PH-2PIN-2MM
| Pin | Definition |
| 1 | VCC |
| 2 | GND |
Note: With regard to J7, J8, and J9, please refer to Diagram 1 for detailed information.
