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solarstabi  
#1 Posted : Saturday, May 9, 2020 1:19:29 AM(UTC)
solarstabi

Rank: Member

Groups: Member
Joined: 3/29/2009(UTC)
Posts: 25
Australia
Location: Melbourne Australia

My B-2 with Waveio XMOS USB frontend randomly loses lock. This started happening only recently, after many years of reliable service.
Connections are as follows:
Mac Mini -> Wavio XMOS USB board (Luckit device in OSX) -> SPDIF -> B-2 D.
Will be listening to music when, apparently randomly (in the middle of a track), lock LED goes out & sound stops.
Sometimes OSX reports Luckit USB device is still recognised, othertimes it's not.
Power-cycle of DAC often brings music back (for a random period of time).
I've checked supply voltages & seating of Tridents (all LEDs/voltages look good).
Even wired up Waveio to use i2s rather than SPDIF, no change to symptoms.
Checked for overheating, nothing apparent.
Please advise what to test/measure to track down this problem. Very frustrating.
Looking to replace in long term with new 8-channel DAC, but that's another story.
BTW, old B32 still workin fine.
I tri-amp speakers using 3 DACs, B-2 was one of those.
Testing has used B-2 on its own from iPad as headphone amp to eliminate multi-DAC environment from equation, same problem.
francolargo  
#2 Posted : Wednesday, May 20, 2020 12:35:12 PM(UTC)
francolargo

Rank: Member

Groups: Member
Joined: 4/21/2007(UTC)
Posts: 60
Location: Minnesota

Losing recognition of the USB device in OSX suggests your problem originates either in the Mac or in the Waveio. Assuming the WaveIO is powered internally, I would confirm power is reliable. Then confirm USB connection - perhaps other cables, other computer, etc.?
solarstabi  
#3 Posted : Thursday, May 21, 2020 8:15:58 AM(UTC)
solarstabi

Rank: Member

Groups: Member
Joined: 3/29/2009(UTC)
Posts: 25
Australia
Location: Melbourne Australia

Fingers crossed, looks like it was the WaveIO USB board (both i2s & spdif outputs). Was already running internal power from TP shunt regulated power supply. Voltages all checked out.
Could be my 10yo Mac Mini, but all USBs behave the same, & only on the WaveIO. Other USB dac interfaces work fine.
Running USB->spdif into the B2 using a borrowed Audiophilleo, & it's perfect. Maybe the reclocking did it, who knows.
Even with nothing else connected, WaveIO would drop lock rendomly.
Time to move on:
Still want a new 8 channel B4, but that's another story.
Stay safe & happy, people.

Edited by user Thursday, May 21, 2020 8:21:46 AM(UTC)  | Reason: Not specified

valuxin  
#4 Posted : Friday, May 29, 2020 6:06:12 AM(UTC)
valuxin

Rank: Member

Groups: Member
Joined: 2/19/2020(UTC)
Posts: 5
Belarus
Location: Minsk

Look through this thread, you might have the same problems.

http://www.twistedpearau...layback-on-I2S-interface
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