Wondom Jab Series Class D Audio Amplifier Board Owner's Manual (+ PDF)

JAB Series

4 x 30 Watt (4.0 / 2.1 / 2.0 / 0.2)
Class D Audio Amplifier Board
w ADAU1701 DSP & BT 5.0 – JAB4

Key Features

3.6 x 2.7 Inches PCB Size
Integrated with Bluetooth 5.0
Integrated with ADAU1701 DSP
4x30W / 2x30W+1x60W / 2 x 60W
Suitable for Audio 4.0 / 2.1 / 2.0 / 0.2 System
Bluetooth & Line Input Supported
I2S Signal Output
Bluetooth Pairing Cancellation
Four External Potentiometers
Supporting Programming & PC UI Control
Signal Level Sensor System
Power Management System

Distributors:

All Audio 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, CE and RoHs certifications for customers’ convenience. The test reports will be provided upon requests by e-mails only for customers who apply for bulky purchasement of MOV USD$10,000 or MOQ 500pcs.

Ready for:

Contact Info

Email:
[email protected]

Overview

JAB4 is an audio amplifier integrated with both ADAU1701 DSP and Bluetooth 5.0, supporting various audio format decode, such as aptX, aptX HD, aptX LL, SBC and AAC. JAB4 is a 4CH audio amplifier based on TI’s TPA3118, delivering 30W per channel into an 8Ohm load. Furthermore, JAB4 supports PBTL configuration, meaning that each two channels can be configured as one channel with double output power. Therefore, JAB4 can work as 2.1 mode (2 x 30W + 1 x 60W), and 2.0 mode (2 x 60W). Thanks to the equipped cable identification circuit, the switching between the output modes is automatically achieved by inserting cables. JAB4 features high quality audio performance, high efficiency, high flexibility and expandability, perfectly suitable for DIY applications, Home audio, Hotel audio, Desktop audio, Garden audio and demanding industrial audio applications.

There is a built-in antenna on the board for stable connection. In addition, a port for external Bluetooth antenna is provided to ensure the stable audio transmission and high quality audio. Besides Bluetooth input, JAB4 supports 3.5mm line input. The signal from both input methods would be mixed before being transmitted to audio processing. JAB4 provides an I2S signal output. You can connect which to an I2S audio amplifier board, in which condition, JAB4 is set as master mode. Thanks to the employed ADAU1701 DSP chip, JAB4 supports hardware control and software control. Four ports for external potentiometers are offered on board as default. After connection with the potentiometers, you can adjust the gain, volume and frequency. What’s more, JAB4 supports programming with SigmaStudio and remote control through PC UI with connection with ICP5.
Power management system and signal level sensor system are quipped on JAB4 for lower power consumption and high working efficiency.

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		–	–	4	–	–
Minimum Load Impedance		–		4	–	Ω
Efficiency		4 x 30W@8Ohm, 1kHz	–	87	–	%
Nominal Power Requirement		@24V, 1kHz	–	140	–	W
Operating Voltage		@1kHz, 8Ohm	10	24	26	V
Idle Power		Signal detected	–	3.2	–	W
Idle Power		No Signal detected	–	1.2	–	W
Switching Frequency		SD Floating@24V	–	400	–	kHz
Power Consumption		1/4 of max output power@8Ohm, 24V, 1kHz	–	31	–	W
Power Consumption		1/8 of max output power@8Ohm, 24V, 1kHz	–	17	–	W
Control	Standby (Low = inputs enabled)	High-level Input Voltage	3.3	–	–	V
	Standby (Low = inputs enabled)	Low-level Input Voltage	–	–	0.8	V
	Mute (High = outputs enabled)	High-level Output Voltage	3.3	–	–	V
	Mute (High = outputs enabled)	Low-level Output Voltage	–	–	0.8	V
Standby Power		SD short to GND, only when low power module available	–	86	–	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	dB
DSP Gain	SE2 (Line Output)	@8Ohm, 1kHz	-60	–	6.5	dB
Input Sensitivity		2 x 30W@8Ohm, 1kHz, 26dB		770		mV
Filter Gain		Butterworth, Q= 0.707	–	4	–	dB
Cutoff Frequency		HFP	0.25	–	2	kHz
Cutoff Frequency		LFP	–	20	–	kHz
SNR		2 x 30W@8Ohm, THD+N=1%, 26dB, A-weighting		97		dB
THD+N		5W@8Ohm, 1kHz,26dB		0.03		%
THD+N		10W@8Ohm, 1kHz, 26dB		0.06		%
Input Impedance		–		10		kΩ
Supported Sampling Rates		–	–	48	–	kHz
Output Noise Level		A-weighting, Input Connected to GND, 26dB		153		uV
DC Offset		–		10		mV
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

Line Input
BT Control
BT Indicator
Signal Level Sensor System
Power EN
Signal Indicator
I2S Signal Output
For cascading with other I2S audio amplifier.
PH-6POS-2mm
USBi
Connect with ICP3/Higher version(s)
PC UI Control
SigmaStudio Program

The switch between 4.0 mode, 2.1 mode and 2.0 mode is achieved by automatic cable identification.

Notes:

JAB4 supports 4.0 mode (4 x 30W), 2.1 mode (2 x 30W + 1 x 60W) and 2.0 mode (2 x 60W). The switch between the three modes is achieved by automatic cables identification, without any need of other operations. If you want to use JAB4 as 0.2, please set the mode and frequency through PC UI after connection with WONDOM ICP5. 0.2 Mode is not available when using hardware control (potentiometers).
Besides speaker output, JAB4 provides an I2S signal output, which can be transmitted to an I2S audio amplifier.
Signal Level Sensor System has been employed in JAB4 for low power consumption. JAB4 will enter into standby mode when audio signal is not detected for long time (5min). Once audio signal is detected under this circumstance, JAB4 will restart to work. It is not malfunction if JAB4 enters into standby mode.
The basic cable package of JAB4 contains: one power cable and two speaker cables. If you have special requirements of cables, please contact us at [email protected].

Function of Potentiometers

Port	Function	4.0 / 2.0 Mode	2.1 Mode (CH1 – Mono)	2.1 Mode (CH2 – Mono)
POT4	Overall Gain	Overall Gain	Overall Gain	Overall Gain
POT3	CH2 HPF or BPF	High-pass Filter of CH2	High-pass Filter of CH2	Band-pass Filter of CH2
POT2	CH1 HPF or BPF	High-pass Filter of CH1	Band-pass Filter of CH1	High-pass Filter of CH1t
POT1	CH1 Relative Gain	CH1 Relative Gain	CH1 Relative Gain	CH1 Relative Gain

Note:

The channel 1 speaker output (J11) of JAB4 is defined as CH1; channel 2 speaker output (J12) is defined as CH2.
POT1 and POT2 are used to adjust CH1 output, POT1 is used to adjust the gain of CH1 on the basis of overall gain. POT3 is used to adjust CH2 output and POT4 is used for overall gain. When JAB4 works as 2.1 mode, you can configure any channel as 0.1. The function of potentiometers will be changed accordingly.
HPF refers to High-pass Filter; BPF refers to Band-pass Filter. When CH1 (CH2) is stereo output, the function of POT2 (POT3) is HPF; when CH1 (CH2) is mono output, the function of POT2 (POT3) is BPF.
For the functions of potentiometers when used in other applications, please contact us at [email protected].

Function	Range of Frequency
High-pass Filter (4.0 / 2.0 Mode)	20Hz- 2kHz
High-pass Filter (2.1 Mode)	250Hz- 2kHz
Band-pass Filter	20Hz-150Hz (High-pass)
Band-pass Filter	120Hz-350Hz (Low-pass)

Adjustable Frequency Range of High-Pass Filter (Stereo Mode)

Adjustable Frequency Range of Band-pass Filter

Adjustable Range of Lower Frequency of Band-pass Filter
Adjustable Range of Upper Frequency of Band pass Filter

Output Connection

4.0 Mode	2.1 Mode	2.0 / 0.2 Mode

Customer could customize frequency range through Sigma Studio,
We provide SigmaStudio source code for downloading.
(PC UI Control only works with default firmware.)

Mechanical Dimensions

Dimensions	A (inch/mm)	A1 (inch/mm)	B (inch/mm)	B1 (inch/mm)	D (inch/mm)
Dimensions	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)

The height is measured from the bottom of the PCB to the highest part of the components.

Connections

LED1, Bluetooth
LED Indicator
Bluetooth Antenna
Bluetooth 5.0 Module
I2S Signal Output
Programming Port
LED2, Signal Detection
LED Indicator

Stereo Mode

Mono Mode

LED Indicator

LED1, Bluetooth Indicator
When Bluetooth is paired, the LED will be ON;
When Bluetooth is searching, the LED will BLINK.

LED2, Signal Detection Indicator
When there is signal detected, the LED will be ON;
When there is no signal detected for 5min, the LED will be OFF.

External Bluetooth LED Indicator:

J1, PH- 2Pos- 2mm

Pin	Definition
1	LED-
2	LED+

Power Supply

Power Supply Connector:

J6, Molex MicroFit- 2Pos- 3mm

Pin	Definition
1	VCC
2	GND

The recommended power supply range is DC12-26V.

Battery Power Connector:

J5, PH- 4Pos- 2mm

Pin	Definition
1	VCC
2	VCC
3	GND
4	GND

It is suggested to use WONDOM BCPB series battery board to power JAB4 since there is no charging circuit equipped with JAB4.

Programming

Programming Connector:

J4, PH – 6Pos – 2mm

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

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

Audio Input

Bluetooth Input:

Bluetooth 5.0 Module, supporting

There is a built-in antenna on JAB4 so you can connect with your device for audio playback without connection with an external antenna.

External Bluetooth Antenna:

Bluetooth Antenna

If you want to integrate JAB4 in a speaker or a cabinet, it is suggested to install the external Bluetooth antenna for stable connection.

Line Input Connector:

J13, PH- 5Pos- 2mm

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

JAB4 supports 3.5mm line input as well. The signal from both input methods will be mixed.

Audio Output

Speaker Output Connector:

J11, Molex MicroFit – 2x3Pos – 3mm

Pin	Stereo	Mono
1	GND	GND
2	OUTR1-	MONO1+
3	OUTL1+	MONO1-
4	MODE1	MODE1
5	OUTR1+	MONO1+
6	OUTL1-	MONO1-

J12, Molex MicroFit – 2x3Pos – 3mm

Pin	Stereo	Mono
1	GND	GND
2	OUTR2-	MONO2+
3	OUTL2+	MONO2-
4	MODE2	MODE2
5	OUTR2+	MONO2+
6	OUTL2-	MONO2-

Short circuit ‘GND’ and ‘MODE’ in stereo mode, which is not required in mono mode.
JAB4 supports PBTL configuration.
Based on cable identification, JAB4 can automatically switch among 4.0 / 2.1 / 2.0 mode.
The connection is as shown in the connection diagram.

If you want to use JAB4 as 0.2, please set the mode and frequency through PC UI after connection with WONDOM ICP5.
0.2mode is not available when using hardware control (potentiometers).

I2S Signal Output Connector:

J9, PH- 6Pos- 2mm

Pin	Definition
1	LRCLK
2	BCLK
3	DATA
4	GND
5	+5V
6	NC

JAB4 provides an I2S signal output. You can transmit the I2S signal to an I2S audio amplifier, in which condition, JAB4 would be master mode as default.