9
POWER-UP SEQUENCE
Before powering up your m905, make sure your monitor speakers or power amps connected to your
monitors are turned OFF. Once the m905 and the rest of your audio system are powered up, turn on the
power to your speakers. When powering down, we recommend that you first power off your speaker
system and then power down the m905.
SYSTEM CONNECTIONS
The m905 input, output and interface connections are detailed here. Pinout diagrams for various con-
nectors are located in the cable and connector wiring diagrams (page 41) section of this manual. If you
have an m905 Analog system, all digital inputs, digital loop thru outputs and wordclock will be unavail-
able.
UNBALANCED ANALOG INPUT -
This stereo input is for interfacing with consumer level (-10dBv) unbalanced
analog sources. Connections are made using standard RCA cables. For units with the RIAA phono option
installed, this stereo input can also interface directly with a turntable.
BALANCED ANALOG INPUT -
The balanced stereo analog input is via female XLR. Connections are made us-
ing standard balanced XLR cables, wired to the pin 1 shield, pin 2 positive, pin 3 negative.
CUE ANALOG INPUT -
The balanced stereo analog CUE input is via female XLR. Connections are made using
standard balanced XLR cables, wired pin 1 shield, pin 2 positive, pin 3 negative.
TALKBACK MIC INPUT-
A standard microphone input which can be used with dynamic or condenser mi-
crophones. Phantom power (+48V) is available (see Setup Mode). Wired pin 1 shield, pin 2 positive, pin 3
negative.
AES3 DIGITAL INPUTS 1 & 2 -
Two stereo AES3 inputs are provided via female XLR connectors. Each of these
conforms to the AES3 standard. In AES Dual Wire mode, the AES1 input is used for the left channel and
the AES2 input is used for the right channel. Note that AES Dual Wire mode requires moving a jumper on
the m905 digital PCBA inside the unit. See AES DW Setup in section 9 of this manual for details. Use of a
high quality 110 Ohm balanced cable is recommended.
S/PDIF COAXIAL INPUT -
Standard coaxial stereo digital input. The input impedance is 75 Ohms. Use of a
high quality 75 Ohm cable is recommended.
TOSLINK INPUT -
Standard stereo optical input connector for use with consumer devices. Use a standard
TOSLINK optical cable for connections to this input.
ADAT INPUT -
This input accepts a standard 8 channel ADAT optical input. 44.1kHz - 192kHz sample rates
are supported (S/MUX for 96kHz-192kHz). The user can select any of the four channel pairs for monitoring.
Use a standard optical / LIGHTPIPE cable for connections to this input.
USB CLASS 2 AUDIO INTEFACE. -
USB input for streaming audio to and from a host computer. Use a standard
USB type A -to- type B cable (included with your m905). The type A connector is to be plugged in to the
HOST computer and the type B connector to the m905 input. PCM 44.1kHz – 192kHz/24 bit and DSD (64x
2.8224MHz via DoP V1.1) are supported. Please refer to ‘computer audio setup’ for further details about
using this input.
SPEAKER OUT 1 / 2 / 3 -
Balanced stereo analog speaker outputs are provided via male XLR connectors,
which connect to your stereo monitor systems (power amps or powered speakers). Connections are
made with standard balanced XLR cables. These inputs are wired to the pin 1 shield, pin 2 positive pin 3
negative. Note: See the unbalanced termination wiring diagram for connecting any of these outputs to
unbalanced equipment. (p.37)
CUE OUTPUT -
A balanced stereo CUE output is provided via male XLR connectors. Normally, this output is
fed by the CUE input signal and would typically be wired to your studio’s headphone cue system. Connec-