Russound CAS44 Manual page 22

7.4 Bass
Bass levels displayed on keypads range in value from -10 through +10. These Bess levels are
represented in Decimal when using RS-232 messages ranging in value from 0 - 20. In the actual
Data message the HEX value is used which would range in value from 0x00 – 0x14. This means
(0x00 = 0 = -10, 0x01 = 1 = -9, 0x02 = 2 = -8 ... 0x14 = 20 = +10).
NOTE: The keypad displays will not automatically update for this change.
7.4.1 Bass Up/Bass Down
The following example shows the Bass level being increased or decreased.
Byte # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Value F0 cc 00 7F 00 00 70 05 05 02 00 zz 00 00 00 ## 00 00 00 00 00 01 xx F7
cc = controller number -1
zz = zone number -1
xx = checksum
Byte #16 = button event (Plus = 0x69 = Increase, Minus = 0x6A = Decrease)
7.4.2 Set Bass
Select the Bass level for a particular zone using a discrete message.
Byte # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Value F0 cc 00 7F 00 00 70 00 05 02 00 zz 00 00 00 00 00 01 00 01 00 ## xx F7
cc = controller number -1
zz = zone number -1
xx = checksum
Byte #22 = Bass level (0x00 = -10 ... 0x0A = Flat ... 0x14 = +10)
7.4.3 Get Bass
The current Bass setting for a particular zone can be obtained by using the following message.
Byte # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Value F0 cc 00 7F 00 00 70 01 05 02 00 zz 00 00 00 00 xx F7
cc = controller number -1
zz = zone number -1
xx = checksum
The return message would look like the following.
Byte # 1 2 3 4
Value F0 00 00 70 cc 00 7F 00 00 05 02 00 zz 00 00 00 00 01 00 01 00 ## xx 7F
cc = controller number -1
zz = zone number -1
xx = checksum
Byte #22 = Bass level (0x00 = -10 ... 0x0A = Flat ... 0x14 = +10)
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