Marantz Stereo 70S 2.1-Channel Network A/V Receiver - Manual (Page 180)

No sound is produced from subwoofer.
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Check the subwoofer connections.
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Turn on the subwoofer’s power.
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Set “Speaker Layout” – “Subwoofer” on the menu to “Yes”. ( v p. 144)
“M-DAX” cannot be selected.
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Check that an analog signal or PCM signal (Sample Rate = 44.1/48 kHz) is input. ( v p. 129)
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Switch to a sound mode other than “Direct” or “Pure Direct”. ( v p. 102)
No sound is output when using ZONE2.
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The analog audio signal and the 2-channel PCM signal input from digital connectors (OPTICAL/COAXIAL) can be played back in ZONE2.
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When listening to audio from a Bluetooth device in ZONE2, remove any obstructions between the Bluetooth device and this unit and use it within a
range of about 98.4 ft/30 m.
Sound mode settings are not available when using Bluetooth headphones. Audio menu settings are also not available.
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This unit cannot change sound mode or audio menu settings for audio output to Bluetooth headphones.
Contents Connections Playback Settings Tips Appendix
180
Front panel Display Rear panel Remote Index