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DH44 4 Source, 4 Zone Digital Audio Router
Digital Coaxial (DIG COAX)
Use a Digital Coaxial cable to connect an audio source with a Digital Coaxial output to the
DH44’s Source Input as shown in Figure 3-2. Digital Connections provide the best audio qual-
ity and should be used if available. If both a Digital Coaxial connection and a Digital Optical
connection are present on the audio source, use only one. DO NOT connect both Coaxial and
Optical outputs to the DH44.
DH44
Digital Source
Digital Output
Digital
Coax
Cable
SPDIF

Figure 3-2: Source Input - Digital Coaxial

Digital Optical (OPTICAL)
Use a Digital Optical (TOSLINK) cable to connect an audio source with a Digital Optical output
to the DH44’s Source Input as shown in Figure 3-3. Digital Connections provide the best audio
quality and should be used if available. If both a Digital Coaxial connection and a Digital Optical
connection are present on the audio source, use only one. DO NOT connect both coaxial and
optical outputs to the DH44.
DH44
Audio Source
Digital Optical
Output
Digital
Optical
Cable
DIGITAL
OPTICAL

Figure 3-3: Source Input - Digital Optical

Set the Coaxial/Optical
Selection Switch
to the OPT position.
Set the Coaxial/Optical
Selection Switch
to the COAX position.
NOTE: Multi-channel digital audio formats (5.1, 7.1 etc.) are not supported by the DHSIP and DH44. However, many audio/video
sources allow you to change the digital output to PCM Stereo. In most cases this will allow multi-channel audio sources to output
a “summed” stereo signal through the digital output. Consult the audio/video source manual for details.
NOTE: Some audio sources which utilize a digital output require that you enable the digital output before it will function. If there
is no audio present, check the setup menu of the audiosource to confirm that the digital output is enabled.
NOTE: Multi-channel digital audio formats (5.1, 7.1 etc.) are not supported by the DHSIP and DH44. However, many audio/video
sources allow you to change the digital output to PCM Stereo. In most cases this will allow multi-channel audio sources to output
a “summed” stereo signal through the digital output. Consult the audio/video source manual for details.
NOTE: Some audio sources which utilize a digital output require that you enable the digital output before it will function. If there
is no audio present, check the setup menu of the audiosource to confirm that the digital output is enabled.