Rank: Member
Groups: Member
Joined: 3/29/2009(UTC) Posts: 25 Location: Melbourne Australia
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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.
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Rank: Member
Groups: Member
Joined: 4/21/2007(UTC) Posts: 59 Location: Minnesota
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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.?
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Rank: Member
Groups: Member
Joined: 3/29/2009(UTC) Posts: 25 Location: Melbourne Australia
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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)
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Rank: Member
Groups: Member
Joined: 2/19/2020(UTC) Posts: 6 Location: Minsk
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