Jbl CINEMA SB400 Powered sound bar with powered wireless 8” Subwoofer Circuit diagram

Midrange transducers: Two 2-1/4" (57mm) cones per channel
High-frequency transducer: One 1" (25mm) dome per channel
Amplifier power: 60 watts peak per channel
Power requirement: 100V – 240V, 50Hz/60Hz, 60W
Power consumption: <0.5W (standby); 60W (maximum)
Dimensions (H x W x D): 3-3/4" x 43-5/16" x 2-1-2"  (95mm x 1100mm x 64mm)
Weight (shipping): 7.3 lb (3.3kg)

Low-frequency transducer: One 8" down-firing cone

Amplifier power: 100 watts
Enclosure type: Ported
Power requirement: 100V – 240V, 50/60Hz, 100W
Power consumption: <0.5W (standby); 100W (maximum)
Dimensions (H x W x D): 14" x 13" x 12-5/8"  (355mm x 329mm x 320mm)
Weight (shipping): 23.1 lb (10.5kg)

Power

3.3v supply pins are provided on either side of the module.  These pins are all internally connected inside of the SiP and are provided for convenience so that Ginseng can be powered from either the left or right sides to make routing a PCB convenient for various applications.  It is generally recommended to power the 3.3V bus from only one side of the SiP. The pins on the other side should be shunted to ground through a 0.1uF and 1uF set of capacitors.

XPD

The XPD port is a SPI bus used for loading module firmware during development and mass production and also for debugging. One of the following two styles of XPD port connectors should be included on all motherboard designs that use Ginseng to ensure that loading code and debugging can be done easily. The XPD port interfaces to the XPD module which provides an interface to a host computer via RS-232 or USB. The XPD port operates from the VCC bus. To ensure proper functionality of the XPD interface, be sure to minimize the amount of capacitance on the XPD lines. Note: the XPD_RESET / EXT_RST pin is tolerant up to 1.8V MAX -- if control of the Reset pin is desired, a series diode must be used to guarantee the input voltage does not exceed the 1.8V max.

Customers can purchase an XPD Programming Module and ribbon cables from Eleven Engineering, or build their own based on the Schematic, BOM, Assembly Drawing, and Gerber files, which are all available from Eleven without charge. The XDE download program is also available from Eleven’s website without charge.

Digital IO

Ginseng has general purpose digital IO (“GPIO”) pins available for use by the application firmware. GPIO pins use the same logic voltage as the 3.3V pin and have the following software configurable features:  IO direction, drive strength (for output only), Schmitt Trigger (for input only), pull up (input only), pull down (input only), slew rate (output only). Ginseng is also capable of active-high and active-low configuration of LEDs.

Circuit diagram (Schematic)

Amplifier

HDMI port connector

Main board-full

BLUETOOTH OPERATION
To wirelessly stream audio to the soundbar from a Bluetooth-enabled device:
1. Confirm that the soundbar is in the Bluetooth pairing mode (the Bluetooth button LED will be flashing blue). If the LED is not flashing blue, press and hold the Bluetooth button until its LED begins to flash blue.

2. Place the device in the pairing mode. Use the device’s Bluetooth pairing menu to pair it with the soundbar. (The soundbar will appear as “SB400” in the device’s menu.) If the device requires a passcode, use 0000.
3. When the soundbar’s Bluetooth button LED illuminates constantly, it is paired with the device and you can stream audio via Bluetooth from the device to the soundbar.
To listen to audio from the Bluetooth device, press the Source button repeatedly until the Bluetooth Source Indicator LED illuminates.
To disconnect the Bluetooth device, press and hold the soundbar’s Bluetooth button until the LED begins flashing. To pair the soundbar with a different Bluetooth-enabled device, repeat Steps 1 – 3 with the
new device.
Bluetooth button (soundbar only): Press this button to play the audio stream from a paired Bluetooth device through the soundbar. (The Bluetooth Source Indicator LED will illuminate when a paired Bluetooth device is the active source.) Press and hold this button to force the soundbar into the Bluetooth pairing mode.

After turning the soundbar and subwoofer on for the first time, you will need to “pair” the subwoofer and soundbar so they both operate at the same wireless frequency. To pair the units, press the Wireless Pairing
switches on both units within 30 seconds of each other. The units will communicate with each other and operate at the same frequency.

NOTE: The maximum wireless operating distance between the soundbar and subwoofer is approximately 50 feet (15.3m)

Wireless Pairing switch and LED: 

Press this switch to initiate wireless pairing between the subwoofer and the soundbar.

The LED lights blue continuously when the sub-woofer is ON and linked to the sound bar.

The LED slowly flashes blue when the sub-woofer is ON and the wireless link is not established between the sub-woofer and the soundbar.

The LED rapidly flashes blue during the wireless pairing process.

Click on the pictures to magnify