Denon AVR-S570BT 5.2-Channel A/V Receiver - Manual (Page 114)

Sound is interrupted or noise occurs
During playback from the USB memory device, sound is occasionally interrupted.
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When the transfer speed of the USB memory device is slow, sound may occasionally be interrupted.
Noise often occurs in FM/AM broadcasting.
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Change the antenna orientation or position. ( v p. 36)
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Separate the AM loop antenna from the unit.
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Use an outdoor antenna. ( v p. 36)
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Separate the antenna from other connection cables. ( v p. 36)
The sounds appear to be distorted.
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Lower the volume. ( v p. 41)
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Set “Off” to the ECO Mode. When “On” or “Auto” is in the ECO Mode, the audio may by distorted when the playback volume is high. ( v p. 98)
Contents Connections Playback Settings Tips Appendix
114
Front panel Display Rear panel Remote Index