Sure Electronics AA-JA32474 2 x 30 Watt Class D Audio Amplifier Board Instruction Manual

: June 1, 2024
: Sure Electronics

Table of Contents

Sure Electronics AA-JA32474 2 x 30 Watt Class D Audio Amplifier Board
Product Information
Product Usage Instructions
Key Features
Overview
Electrical Specifications
Audio Performance
Block Diagram
Function of Potentiometers
Mechanical Dimensions
Connections
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Sure Electronics AA-JA32474 2 x 30 Watt Class D Audio Amplifier Board

Sure-Electronics-AA-JA32474-2-x-30-Watt-Class-D-Audio-Amplifier-Board-
product-image

Specifications

Number of Channels: 2
Minimum Load Impedance: 8 Ohm
Efficiency: 89%
Nominal Power Requirement: 67W
Operating Voltage: 24V
Idle Power: 1.92W
Switching Frequency: 400kHz
Power Consumption: 17W
Standby (Low = inputs enabled): 9W
Mute (High = outputs enabled): 240mW
Standby Power: 3.3V

Product Information

The JAB3+ is an audio amplifier board integrated with high-performance Bluetooth 5.0 (Supporting APT-X HD) and ADAU1701 DSP. It comes in stereo 50W or 30W models and mono 100W or 60W models, suitable for portable Bluetooth speakers, digital crossovers, and DIY audio applications. The board supports Bluetooth input, 3.5mm AUX IN, and can be cascaded with other WONDOM standard amplifier boards to build audio 4.0/2.1 systems.
Four connectors for external potentiometers are pre-mounted on the board for easy control of the audio system. The JAB3+ also supports programming with SigmaStudio or remote control through APP or PC UI when connected to WONDOM ICP5 or higher versions.
Signal Level Sensor System, Power Management Circuit, and full protection features are equipped in the JAB3+ for lower power consumption.

Audio Performance

Amp Gain: 26dB
DSP Gain: 770dB
Input Sensitivity: 4mV
Filter Gain: 20dB
Cutoff Frequency: 96kHz
SNR: 48dB
THD+N: 10%
Input Impedance: 182 Ohm
Supported Sampling Rates: 10kHz
Output Noise Level: 1.94V
DC Offset Max output Level Crosstalk Separation: -60dB

Product Usage Instructions

Ensure the board is powered by a 24V DC power supply.
Connect your audio input source to either the Bluetooth input or the 3.5mm AUX IN.
If using external potentiometers, connect them to the pre-mounted connectors for audio system control.
If cascading with other amplifier boards, follow the appropriate setup guidelines.
To program or remotely control the board, connect WONDOM ICP5 or higher versions and use SigmaStudio or the provided APP or PC UI.

Frequently Asked Questions (FAQ)

Q: What certifications are provided for the product?
A: FCC, CE, and RoHS certifications are available for customers upon request. Test reports will be provided via email for customers making bulk purchases of MOV USD$10,000 or MOQ 500pcs.
Q: Can the JAB3+ be used to build a stereo system?
A: Yes, the JAB3+ supports stereo configurations and can be cascaded with other boards to create stereo setups.

2 x 30 Watt Class D Audio Amplifier Board w DSP & BT 5.0 – JAB3+ (AA- JA32474)

Key Features

3.60 x 2.70 Inches PCB Size
Battery Board Supported
Power Management Circuit
DSP & Bluetooth 5.0 Integrated
High Receive Sensitivity with RF power up to 9dBm and -90dBm
Supporting Various Audio Decode Formats as APTX, APTX HD, APTX-LL, SBC & AAC
Cascadable with Standard Amplifier Boards for Audio 4.0/2.1 System
Bluetooth Pairing Cancellation
External Control Potentiometers
Supporting ICP5 for PC UI control

Distributors

All Audi o Amplifier boards are complied with ROHS and they are pre- tested with our power supply solution to comply with FCC and CE. We could provide FCC, C E and RoHs certifications for customers’ convenience. The test re ports will be provided upon request s by e-mails only for customers who apply for bulky purchase of MOV USD$10,000 or MOQ 500pcs.

Ready for: Contact Info
Email:info@wondom.com

Overview

JAB3+ is audio amplifier boards integrated with high performance Bluetooth 5.0 (Supporting APT-X HD) and ADAU1701 DSP, covering stereo 50W or 30W models and mono 100W or 60W models, suitable for portable Bluetooth speakers, digital crossover and DIY audio applications.
JAB3+ supports both Bluetooth input and 3.5mm AUX IN. Signal would be mixed and delivered to speaker output. Besides speaker output, JAB3+ supports cascading with other WONDOM standard amplifier boards to build audio 4.0/2.1 systems.
Four connectors for external potentiometers are pre-mounted on the board for easy control of audio system. As for the details, please take reference of ‘Function of Potentiometers’ part. In addition to hardware control, with the connection of WONDOM ICP5 or higher versions, JAB3+ supports programming with SigmaStudio or remote control through APP or PC UI.
Signal Level Sensor System, Power Management Circuit and full protection are equipped in JAB3+ for lower power consumption, higher efficiency and stable operation.

Electrical Specifications

Specifications typical @ +25℃, powered by 24V DC, unless otherwise noted. Specifications subject to change without notice.

Parameter	Conditions	Min.	Typ.	Max.	Units
Number of Channels	–	–	2	–	–
Minimum Load Impedance	–	3.2	8	–	Ω
Efficiency	2 x 30W@8Ohm, 1kHz	–	89	–	%
Nominal Power Requirement	@24V, 1kHz	–	67	–	W
Operating Voltage	@1kHz, 8Ohm	12	24	26	V
Idle Power	Signal detected	–	1.92	–	W
No Signal detected	–	1.68	–	W
Switching Frequency	SD Floating@24V	–	400	–	kHz
Power Consumption	1/4 of max output power@8Ohm, 24V, 1kHz	–	17	–	W
1/8 of max output power@8Ohm, 24V, 1kHz	–	9	–	W
Control	Standby (Low = inputs enabled)	High-level Input Voltage	3.3	–	–

V
Low-level Input Voltage| –| –| 0.8| V
Mute (High = outputs enabled)| High-level Output Voltage| 3.3| | | V
Low-level Output Voltage| –| –| 0.8| V
Standby Power| SD short to GND, only when low power module available| –| 240| –| mW

Audio Performance

Specifications typical @ +25℃, powered by 24V DC, unless otherwise noted. Specifications subject to change without notice.

Parameter	Conditions	Min.	Typ.	Max.	Units
Amp Gain	@8Ohm, 20Hz – 20kHz	–	26	–	dB
DSP Gain	SE1 (Single Amp)	@8Ohm, 1kHz	-60	–	0
SE2 (Line Output)	@8Ohm, 1kHz	-60	–	6.5	dB
Input Sensitivity	2 x 30W@8Ohm, 1kHz, 23.5dB		770		mV
Filter Gain	Butterworth, Q= 0.707	–	4	–	dB
Cutoff Frequency	HFP	0.25	–	2	kHz
LFP	–	20	–	kHz
SNR	2 x 30W@8Ohm, THD+N=1%, 25.8dB, A-weighting		96		dB
THD+N	5W@8Ohm, 1kHz,25.8dB		0.06		%
10W@8Ohm, 1kHz, 25.8dB		0.08		%
Input Impedance	–		10		kΩ
Supported Sampling Rates	–	–	48	–	kHz
Output Noise Level	A-weighting, Input Connected to GND, 25.8dB		182		uV
DC Offset	–		10		mV
Max output Level	J7, Line Output Connector		1.94		dBu
Crosstalk Separation	20Hz-20kHz, Gain=26dB	–	-60	–	dB

All parameters were tested with Rohde & Schwarz UPV audio analyzer (AES17 filter enabled) and Audio Precision AUX0025 filter. For authorized distributors and OEM customers who need more detailed performance graphs and parameter settings, please send an inquiry e-mail to us. (Not available for retail customers)

Block Diagram

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Notes:

Please kindly be noted that there is no charging circuit equipped in JAB3+. If customers want to power JAB3+ with batteries, it is recommended to use WONDOM BCPB series.
JAB3+ supports cascade with other WONODM audio amplifier boards to build audio 4.0/2.1 systems.
Signal Level Sensor System has been employed in JAB3+ for low power consumption. JAB3+ will enter into standby mode when audio signal is not detected for long time (5min). Once audio signal is detected under this circumstance, JAB3+ will restart to work. It is not malfunction if JAB3 enters into standby mode.
The basic cable package of JAB3+ contains: one power cable, one speaker cable. If you have special requirements of cables, please contact us at store@sure-electronics.com .

Function of Potentiometers

Functions of potentiometers based on specific applications

Volume

| Volume of Speaker & Line Output| Volume of Speaker & Line Output| Overall Volume of JAB3+ & SAB| Overall Volume of JAB3+ & SAB
Note

The speaker output (J10) of JAB3+ is defined as CH1; line output for cascading (J7) of JAB3+ is defined as CH2.
JAB3+S refers to JAB3+ in stereo mode, namely 2 x 50 Watt Class D Audio Amplifier Board w DSP & BT5.0 – JAB3+ or 2 x 30 Watt Class D Audio Amplifier Board w DSP & BT5.0 – JAB3+; JAB3+M refers to JAB3+ in mono mode, namely 1 x 100 Watt Class D Audio Amplifier Board w DSP & BT5.0 – JAB3+ or 1 x 60 Watt Class D Audio Amplifier Board w DSP & BT5.0 – JAB3+. SAB refers to WONDOM Standard Amplifier Board.

3. HPF refers to High-pass Filter; BPF refers to Band-pass Filter. When CH1 is stereo output, the function of POT3 is HPF; when CH1 is mono output, the function of POT3 is BPF.
4. Four applications are exampled in this datasheet. For the functions of potentiometers when used in other applications, please contact us at store @sure-electronics.com.
5. Four connectors for connection with external potentiometers are pre- mounted on the JAB3+. If you want hardware control, please connect with the external potentiometers for adjustment.
Function| Range of Frequency
---|---
High-pass Filter (Stereo Mode)| 20Hz- 2kHz
High-pass Filter (Mono Mode)| 250Hz- 2kHz
Band-pass Filter| 60HZ-120Hz (High-pass)
200Hz-400Hz (Low-pass)

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Mechanical Dimensions

$Sure-Electronics-AA-JA32474-2-x-30-Watt-Class-D-Audio-Amplifier-Board-fig- $6$$

Dimensions| A (inch/mm)| A1 (inch/mm)| B (inch/mm)| B1 (inch/mm)| D (inch/mm)
---|---|---|---|---|---
3.60/91.44| 3.30/83.8| 2.70/68.6| 2.40/61.0| 0.14/3.6

Notes:

All dimensions are typical in inches/mm， Height = 0.79inch / 20mm
Tolerance x.xx = ±0.02(±0.50)

Connections

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External LED Indicator

External Bluetooth Indicator Connector: J1, PH-2Pos-2mm

Pin	Definition
1	LED-
2	LED+

When Bluetooth is paired, the LED will be ON;
When Bluetooth is searching, the LED will BLINK.

External Signal Detection Indicator Connector: J11, PH-2Pos-2mm

Pin	Definition
1	LED-
2	LED+

When there is signal detected, the LED will be ON;
When there is no signal detected for 5min, the LED will be OFF.

Potentiometers
Four connectors are provided on the JAB3+ board for external potentiometers. The cables are included in the Functional cables kit for JAB3+ (AA-JA11117).

Power Supply
P ower Supply Connector: J8, Molex- 2Pos- 3mm

Pin	Definition
1	VCC
2	GND

*Battery Board Connector:**
J6, PH- 4Pos- 2mm

Pin	Definition
1	VCC
2	VCC
3	GND
4	GND

Audio Input

Bluetooth Input: U1
3.5mm AUX IN Connector: J9, PH- 5Pos- 2mm

Pin	Definition
1	RIN
2	AGND
3	LIN
4	NC
5	NC

You can find the 3.5mm AUX IN cable in the Functional cables kit for JAB3+ (AA-JA11117).

Extension Port
DSP Extension Port : J4, PH- 10Pin- 2mm

Pin	Definition	Pin	Definition
1	GND	6	MP00
2	MP11	7	DATA
3	MP10	8	BCLK
4	MP06	9	LRCLK
5	MP07	10	+3.3V

This port can be used for I2S input and I2S output. Please note JAB3+ is set as master mode when using I2S. The mapping of ADAU1701 is as follows.

For I2S input:

Pin	I2S Input	ADAU1701
6	I2S DATA0	MP0
7	I2S DATA1	MP1
8	I2S BCLK	MP5
9	I2S LRCLK	MP4

For I2S output:

Pin	I2S Output	ADAU1701
2	I2S BCLK	MP11
3	I2S LRCLK	MP10
4	I2S DATAO0	MP6
5	I2S DATAO1	MP7

Besides, if you want to develop more functions, you can make use of Pin 4, 5, 6 of J4. Other positions are not available.

Audio Output

Speaker Output Connector: J10, Speaker Output Connector

Pin	Definition
1	ROUT1+
2	LOUT2-
3	ROUT1-
4	LOUT2+

Line Output Connector:
J7, PH-6Pos-2mm

Pin	Definition
1	LOUT
2	NC
3	GND
4	GND
5	NC
6	ROUT

This port can be used to cascade with other WONDOM standard amplifier boards to build audio 4.0/2.1 system.

Control
BT Pairing Cancellation Connector: J3, PH- 2Pos- 3mm

Pin	Definition
1	Cancel
2	+3.3V

When Bluetooth is paired, short circuit ‘Cancel’ and ‘+3.3V’ to cancel pairing.
After cancellation, please release short circuit.

Standby and Mute Control Connector: J12, PH- 3Pin- 2mm

Pin	Definition
1	STBY
2	GND
3	MUTE

Short circuit “STBY” and “GND” to enter into standby mode;
“Mute” is for control synchronization with the cascading amplifier board so that their control logic can be consistent. Do not short circuit “Mute” and “GND” when using JAB3+ separately.

Programming Connector: J5, PH- 6Pin- 2mm

Pin	Definition	Pin	Definition
1	RST	4	WP
2	+5V	5	SCL
3	GND	6	SDA

This port is for connection with WONDOM ICP5 to achieve programming and remote control functions.

Sure Electronics

Make Your Audio Application Simple!
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