Preliminary
miniDSP Ltd, Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice 75
9.4.2 Audio issues – Dirac Live version
No sound during volume calibration
If you get no sound while on the Volume Calibration tab of Dirac Live, first make sure that you increase the
volume slider in the UI (the leftmost one).
If there is still no sound, double-check that output cabling is connected to the right connectors on the rear panel
and to the correct inputs on downstream equipment. Make sure that downstream equipment (e.g. amplifiers) is
not muted, turned down, or turned off.
No sound during playback
If you get no sound while playing music, first quit Dirac Live if it is open, and start the DDRC-24 plugin. Then
work through the following steps.
If there is no signal on the input meters
1. Check which input source you have selected.
2. Double-check the connection and cabling between the source(s) and the miniDSP Flex.
If there is signal on the input meters, but no signal on the output meters
1. Check the master volume setting.
2. Check that the miniDSP Flex is not muted (Mute button at top right of the interface).
3. Check your Routing and make sure that you are routing inputs through to outputs.
4. Check your crossover settings.
If there is signal on the output meters, but still no sound
1. Check that output cabling is connected to the right connectors on the rear panel and to the correct inputs
on downstream equipment (e.g. amplifiers).
2. Check that downstream equipment (e.g. amplifiers) is not muted, turned down, or turned off.
Strange soundstage
If the soundstage width is very narrow, check that you have not summed left and right input channels and
routed the sum to the left and right speaker. This will result in a mono signal and hence a narrow soundstage.
If the soundstage is “weird”, check the routing and crossover settings, and make sure that left and right are
consistent. If you are implementing an active speaker, also double check the connections on the rear panel.
Distortion
If audio playback is distorted, you may have too much gain internal to the DSP. Dirac Live can apply up to 10 dB
of gain, so the output level should be kept lower than -10 dB to guarantee that there is no distortion with a full-
scale input signal.
This issue typically occurs when volume control is being done downstream of the miniDSP Flex. If so, set the
miniDSP Flex master volume at -10 dB, and then use the downstream equipment to control volume.
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