Waveform renders but Audio does not playback. Meters do not move PP2017

i have similar problems audio problems except in case waveform renders, premiere generate peak files after move or cache delete no audio. have tried  following workarounds.

1.)did clean install of 2017. installed current bmd drivers 10.8.2

2.) have cleared out cache using premiere

3.) moved cache.

4.) manually deleted cache.

4.) moved location of clips.

5.) relinked clips.

6.) imported new clips.

7.) created new projects , imported new clips.

8.) created new projects , imported unrelated clips.

9.)imported audio files.

 

no audio during playback.  waveforms show meters not move. clips tested externally using quicktime , plays audio.

 

system:

yosemite 10.10.5

2.7 ghz 12-core intel e5

64 gb 1866 ddr3

firepro d700 6144mb

black magic ultrastudio 4k extreme 10.8.2

quantum server.

did check playback settings in preferences?

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