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Refer to Figure 1 for mechanical dimensions and mounting holes location.
The VCM board offers multiple installation options:
Horizontal. Use four mounting holes provided at the corners of the board. Use spacers to
elevate the board over the mounting surface. Optionally, use a 16-pin dual row 0.100”x0.100”
header installed in J3 position from the bottom to connect to the application board. J3 carries
all required audio and power connection. When used with one of the MCU Control boards from
Academy Audio, control signals may be received through a flat cable connector J2.
Vertical. Use a right angle 16-pin dual row 0.100”x0.100” header installed in J3 position from
the top to connect to the application board. No extra supporting features are needed. J3 carries
all required audio and power connection. When used with one of the MCU Control boards from
Academy Audio, control signals may be received through a flat cable connector J2.
Combo Installation. When used with an MCU-M board, the VCM may be installed as a compact
module at the face plate, similar to a standard potentiometer. For this type of installation, use
spacers to attach the VCM board to the MCU-M board through the matching mounting holes.
Use a 6-pin straight connector inserted in J4 position to receive control signals from the MCU-M
board. Use solder connectors J1 and J5 or a 16-pin header J3 to connect to power and audio
circuitry.
To install multiple Volume Control boards position the VCM boards at least 0.500” from each other.
Control signals shall be shared through the connector J4.
3. Address Selection
Up to eight MUSES Volume Controls may be independently addressed through one MUSES control bus.
The VCM board is supplied with a default address of 000, which may be changed by jumpers A0, A1, and
A2. Any address from “000” to “111” may be selected using jumper resistors in the ADDRESS positions
A0, A1 and A2 on the VCM board.
Please note that the standard Academy Audio MCU control boards for MUSES products are supplied for
a default address of 000, and will not operate other addresses. Consult the factory for other codes
availability.
4. Power Requirements
The VCM board requires a clean analog bi-polar power source of Vcc=+12Vdc to +15Vdc, 10mA and
Vee=-12Vdc to -15Vdc, 5mA. More current will be needed if an on-board opamp is used. Digital power
is generated by an onboard voltage regulator.
5. Connectors Description
The VCM board features several multifunctional connectors that provide all required connectivity for
every application option.
