Harman Kardon ONYX STUDIO 4 Service Manual

4
OS4 Software upgrading method
1. Unzip the email attachment HID_D
U_PC_Tool_LocalUpgrade
Release 1.7.0.0 20150918.bar
2. Connect the USB cable from the machine to computer；
At the same time ,please long press "BT" and "VOL+" keys within 10
seconds, so that the OS4 will goto the DFU upgrade mode, at this
time all LEDs light up for at least 2 seconds, then all off.
3. Open “HID_DFU_PC_Tool_LocalUpgrade Release 1.7.0.0 20150918” and
double-click “HidDfuUI”.
The dialog box displays as follows，click “PID=7909，VID=3787”, and then
press “OK”.
4. Find the file which filename extension is DFU, and click “State upgrade”.
When upgrade successfully
,displayed“upgrade succeeded”, Close
the upgrade window to complete.

Harman Kardon ONYX STUDIO 4 Specifications

General

Bluetooth version	4.2
Output power	4 x 15W (AC mode); 4 x 7.5W (Battery mode)
Battery type	3.7V/3000mAh Lithium-ion
Battery charge time	5 hours
Music playing time	Up to 8 hours
Frequency response	50Hz – 20kHz (-6dB)
Signal-to-noise ratio	80dB A-weighted
Weight	2061g
Supported profiles	A2DP 1.3, AVRCP 1.6, HFP 1.6
Power supply	19V/2A
Brand	Harman Kardon
Model	ONYX STUDIO 4
Product Type	Portable Bluetooth Speaker
Wireless Connectivity	Bluetooth
Water Resistance	No
Built-in Microphone	Yes
Auxiliary Input	Yes (3.5mm)
Color Options	Black, Blue, White
Transducers	2 x Woofer 75mm, 2 x Tweeter 20mm
Driver Size	Woofer 75mm, Tweeter 20mm