Sample Rates Overview

The M-32 AD Pro II-D supports the following sample rates:

Supported sample rates

Single speed

44.1 kHz, 48 kHz

Double speed

88.2 kHz, 96 kHz

Quad speed

176.4 kHz, 192 kHz

Number of Channels

The supported number of channels per port at different sample rates is shown in the following table.

Supported number of audio channels per port and direction at different sample rates

44.1 kHz

48 kHz

88.2 kHz

96 kHz

176.4 kHz

192 kHz

Dante®

64

64

32

32

16

16

ADAT

8

8

4

4

2

2

MADI 56 Ch

56

56

28

28

14

14

MADI 64 Ch

64

64

32

32

16

16

MADI 56 Ch (96k frame)

---

---

28

28

---

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MADI 64 Ch (96k frame)

---

---

32

32

---

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Since there are two independent MADI ports, the total supported number of channels can be multiplied by two. The analog channel count remains identical at all sample rates.
The Dante channel count is based on a gigabit ethernet connection. Dante also supports 100 MBit/s switches, however this will limit the above channel count to less than half. It is recommended to only use gigabit ethernet connections.

Selecting a Sample Rate

To configure the device sample rate on the device:
  1. Enter the CLOCK section.

    Clock Rate
  2. Rotate the encoder to highlight the current sample rate.

  3. Push the encoder. Two blue arrows will appear to indicate that the encoder can now be used to change the current setting.

  4. Rotate the encoder until the preferred sample rate is shown.

  5. Push the encoder again to activate the setting.

To configure the device sample rate on the web remote:
  1. Locate the Select sample rate drop down menu in the CLOCK section.

  2. Select a sample rate from the drop down menu. The new rate is automatically applied.

Effects of Sample Rate Changes on Existing Routing

The M-32 AD Pro II-D saves one routing table per preset, regardless of sample rate. A change of sample rate or MADI frame mode can reduce the number of input and output channels available for routing. This does not alter the routing table. Any existing routing is hidden until another change of sample rate re-enables the channels.

Example:

A routing is created at 96 kHz with 32 channels, sending the MADI coaxial Input 1-32 to optical MADI Output 1-32. If the sample rate is now changed to 176.4 kHz and the 56 Ch frame is activated, only the first 14 channels of MADI coaxial input are routed to the optical output. Switching the sample rate to 44.1 or 48 kHz will reveal the previous routing for 32 channels.