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97 08 08
AUTOSTA
NDBY ON
AUTO STANDBY ON
97 28 28 01
97 1C 1C
AUTOSTA
NDBY OFF
AUTO STANDBY
OFF
97 28 28 00
Table 2: Direct Address Volume Codes
HEX
Function
Remarks
Return codes
97 AX AX
X =0-F Set master volume to 0-15
xx =01-14
97 23 23 xx
97 BX BX
X =0-4 Set master volume to 16-20
97 CX CX
X =0-E Set Bass volume to 0-14
xx =01 -0E
97 24 24 xx
97 DX DX
X =0-E Set Treble volume to 0-14
xx =01 -0E
97 25 25 xx
97 EX EX
X =0-F Set INPUT1volume to 0-15
xx =01-14
97 31 31 xx
97 FX FX
X =0-4 Set INPUT1volume to 16-20
97 GX GX
X =0-F Set INPUT2volume to 0-15
xx =01-14
97 32 32 xx
97 HX HX
X =0-4 Set INPUT2volume to 16-20
97 IX IX
X =0-F Set INPUT3volume to 0-15
xx =01-14
97 33 33 xx
97 JX JX
X =0-4 Set INPUT3volume to 16-20
97 KX KX
X =0-F Set INPUT4volume to 0-15
xx =01-14
97 34 34 xx
97 LX LX
X =0-4 Set INPUT4volume to 16-20
Table 3: Return Codes
 Response from Unit = 97 ** ** 0X/XX 0A

All responses end in \x0A or LineFeed

Sample commands and responses
o Power Query – Command -97 20 20
o Power Query – Response – STANDBY 97 20 20 01\x0A = On/No Faults
o Power Query – Response – STANDBY 97 20 20 00\x0A = Off/Standby
HEX
Code
Name
Function
Remarks
Return
codes
97 20 20
STANDBY
Speaker
working Status
Speaker OFF/Standby
Speaker ON/Working
97 20 20 00
97 20 20 01
97 21 21
MUTE
Mute On/Off
Mute Off = 0
Mute = 1
97 21 21 00
97 21 21 01
97 23 23
Master_GAIN_GET
Volume Gain
20 steps total XX=00-
14 HEX code
97 23 23 XX
97 24 24
Master_B_GAIN_GE
T
Bass Gain
14 steps total, XX=00-
0E HEX code
97 24 24 XX