No volume due to "ghost" speaker

Connection with external Audio Devices
1

Setup as follows:

2020 MacBook Pro
Audioquest DragonFly Cobalt DAC connected from MBP T3 port to 3.5mm AUX adaptor
KEF LS50 Wireless II speakers set to AUX

Earlier today, I connected a bluetooth speaker to make Skype calls. I’ve since removed this after the volume problem started, but no difference.

The Mac sound settings are set to Audioquest DragonFly Cobalt and the same on the Audirvana speaker settings menu. However, when I start to play a track, the MBP sound settings switch to “Speaker” - this refers to the bluetooth speaker, which isn’t even switched on or connected.

I have tried doing the following:

  • Resetting the NAVRAM on the MBP (restart, option-command-p-r)
  • Factory reset the KEF’s
  • Deleted and reinstalled the KEF Connect app

Is there something simple I’m missing here?

I image that doing a Total Recall on the Mac will cure the issue, but I really don’t want to go that route.

Thanks in advance for any suggestions

Mike

2

Hello @Grzzz,

Have you tried to disable Bluetooth?

3

Hello Damien,

I need BT enabled to connect my mouse and keyboard

4

Can you send me a copy of the “Debug Info”? You can get it in Audirvana Settings>General>Debug Info

Note: By clicking on the Debug Info button, Audirvana automatically copies all its content, all you have to do is paste it in response to this message.

5

Thanks, here’s the debug info:
SIGNAL PROCESSING:

Polarity Inversion:
	Globally: OFF
	Per track: ON
Effects plugins NOT ACTIVE

UPSAMPLING:
SoX with Power Of Two upsampling
SoX filter parameters
Bandwidth at 0dB = 99.5
Filter max length = 30000
Anti-aliasing = 100
Phase = 66

AUDIO VOLUME:
Max allowed volume: 100
Replay Gain: by track
SW volume control: OFF

LIBRARY SETTINGS:
Sync list: 1 folders
AUTO: /Volumes/Audirvana Database 2TB/
iTunes/Music library synchronization: last synchronized on Sat Jul 11 14:38:37 2020

Library database path: /Users/michaelmorse/Library/Application Support/Audirvana/AudirvanaPlusDatabaseV2.sqlite

ACTIVE STREAMING SERVICES

=================== AUDIO DEVICE ========================

CoreAudio audio path, buffer I/O frame size: 512

Max. memory for audio buffers: 15360MB

Local Audio Engine:
Exclusive access: Enabled
Integer mode: Enabled

Preferred device:
AudioQuest DragonFly Cobalt v1.0
Model UID:AudioQuest DragonFly Cobalt v1.0:21B4:0085
UID:AppleUSBAudioEngine:AudioQuest:AudioQuest DragonFly Cobalt v1.0:AQDFCB0100103921:1

Active Sample Rate: 96kHz
Hog Mode is off

Bridge settings:
Sample rate limitation: none
Sample rate switching latency: none
Limit bitdepth to 24bit: OFF
Mute during sample rate change: OFF

Selected device:
Local audio device
ID 0x31 AudioQuest DragonFly Cobalt v1.0 Manufacturer:AudioQuest
Model UID:AudioQuest DragonFly Cobalt v1.0:21B4:0085 UID:AppleUSBAudioEngine:AudioQuest:AudioQuest DragonFly Cobalt v1.0:AQDFCB0100103921:1

4 available sample rates up to 96000Hz
44100
48000
88200
96000
Audio buffer frame size : 27 to 4096 frames
Current I/O buffer frame size : 512
Volume Control
Physical: Yes
Virtual: Yes
MQA capability
Auto-detect MQA devices: No
Not a MQA device, user set to not MQA
DSD capability: Unhandled
Device audio channels
Preferred stereo channels L:1 R:2
Channel bitmap: Ox3, layout:
Channel 0 mapped to 0
Channel 1 mapped to 1

Audio channels in use
Number of channels: 2
Use as stereo device only: No
Simple stereo device: Yes

1 output streams:
Number of active channels: 2, in 1 stream(s)
Channel #0 :Stream 0 channel 0
Channel #1 :Stream 0 channel 1

Stream ID 0x32 2 channels starting at 1
8 virtual formats:
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 96kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 88.2kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 48kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 44.1kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 96kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 88.2kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 48kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 44.1kHz

8 physical formats
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer 96kHz
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer 88.2kHz
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer 48kHz
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer 44.1kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 96kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 88.2kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 48kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 44.1kHz

Local devices found : 4
Device #0: ID 0x70 DELL U2417H Manufacturer: Apple Inc. Model UID: AppleGFXHDA:0 UID: AppleGFXHDAEngineOutputDP:f803:0:{AC10-40E7-3538314C}
Device #1: ID 0x31 AudioQuest DragonFly Cobalt v1.0 Manufacturer: AudioQuest Model UID: AudioQuest DragonFly Cobalt v1.0:21B4:0085 UID: AppleUSBAudioEngine:AudioQuest:AudioQuest DragonFly Cobalt v1.0:AQDFCB0100103921:1
Device #2: ID 0x35 CalDigit Thunderbolt 3 Audio Manufacturer: CalDigit, Inc. Model UID: CalDigit Thunderbolt 3 Audio:2188:6533 UID: AppleUSBAudioEngine:CalDigit, Inc.:CalDigit Thunderbolt 3 Audio:200000:1
Device #3: ID 0x57 MacBook Pro Speakers Manufacturer: Apple Inc. Model UID: Speaker UID: BuiltInSpeakerDevice

UPnP devices found : 2
Device #0: ID 0x0 [TV] Samsung 6 Series (55) UID: uuid:323e3ee0-8139-4f36-8e7b-4fd49a30aa4a Location: http://192.168.1.92:9197/dmr
Device #1: ID 0x0 LS50 Wireless II-1509ae UID: uuid:3c4ed890-9474-42a1-ae00-15895477808a Location: http://192.168.1.128:46153/3c4ed890-9474-42a1-ae00-15895477808a.xml

6

So when you have the Cobalt selected you don’t have audio at all in Audirvana? Does it the same if you select your Macbook pro speakers in Audirvana for example?

7

When I select the Mac speakers in Audirvana and in the Mac sound settings, it plays through the Mac speakers.

It’s only where I’ve selected the Cobalt in Audirvana and Mac sounds settings that the Mac defaults to a different speaker setting.

The Cobalt appears to be working fine and the logo changes colour depending on the bit depth being played. The connections at both the Mac and LS50 ends are good.

8

WHY MY COMPUTER AUDIO OUTPUT SWITCH TO BUILT-IN OUTPUT DURING PLAYBACK?

Audirvana takes exclusive access to the audio device (usually your DAC) to be able to apply its advanced optimizations during playback. Windows then tries to find another available audio device.

When playback stops, Audirvana restores access to the audio device, and any other application can then use it.

9

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