User`s guide

Optional Devices
007-4701-003 55
Cables and Connectors
The DM8 audio board has the following connectors on it’s rear panel as shown from left
to right in Figure 2-15 on page 54:
• Surround Center L/R (silver) a line-level output connector for powered surround
Center Left and Right channel speakers (not supported under Linux).
• Surround L/R (black) a line-level output that can connect to powered Surround
Left and Right speakers (not supported under Linux).
• Center/Subwoofer (orange) a line-level output that can connect to powered Center
and Subwoofer speakers (not supported under Linux).
• Front L/R Phones (green) a jack that connects to powered Left and Right speakers.
If you are using a basic two-speaker stereo setup, this is the jack you will use. This is
also the jack to use for stereo headphones.
• Line In (blue) a stereo line-level input intended for recording into an audio
recording program.
• Mic In (pink) a mic input for connecting a mono microphone for recording,
videophone, or voice-recognition applications. This jack is a three-conductor
TRS-type jack for condenser (two-conductor) and electret (three-conductor) type
microphones.
Functional Features
The DM8 PCI audio board has the following functional features:
Line outs:
• Dynamic range of 106 dB (typical, -60 dB input, a-weighted)
• Maximum line output level of 1.26 Vrms (+2 dBV)
• Frequency response of +0.8/-3.0 dB, 20Hz to 80 kHz
Line in:
• Dynamic range of 105 dB (a-weighted)
Mic in:
• Dynamic range of 90 dB (a-weighted)
• Maximum input level of 1.45 Vrms (3.2 dBV)