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XMOS-based Asynchronous USB to I2S interface
XMOS-based Asynchronous USB to I2S interface
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Old 27th January 2013, 11:30 AM   #1641
deduikertjes is offline deduikertjes  Netherlands
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Join Date: Aug 2005
Originally Posted by Ben Mah View Post
Are you still using the isolated out and is the power still applied to the output side of the isolator?

When you send music to the WaveIO, is there voltage on the data output? With no music there should be no voltage and with music there should be voltage.

If you get output from the LR, BC, and DT and the wiring is correct to the dac chip (check for shorts to ground - check that there is voltage at the dac inputs), then check your dac. Check for correct power supply voltage at the chip, check for loose wires, bad solder connections, and that all grounds are connected.

Good luck.
OK, I redid the I2S connections and the PS to the isolator. Now I do have (distorted) sound! Apparently there was a bad connection somewhere in the connector to the header.

Strange, because I tested for continuity and shorts a dozen of times...

Thank you for the help.
NOw try and fix things which I've broken to get things working (like the 8 dacs in parallel).

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Old 27th January 2013, 12:55 PM   #1642
Blitz is offline Blitz
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Join Date: Nov 2002
Location: Cologne, Germany
Originally Posted by Salomon View Post
I am very interested to order a WaveIO board to play together with the SotM tX-USB exp PCI Express Card, using the buffered SPDIF out of the WaveIO.

Are there any known issues with this combination?
I have the PCI version in combination with Alix 1 board. A dream. Beats anything I had before. I run MPDPUP.
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Old 28th January 2013, 07:03 AM   #1643
SebastianL is offline SebastianL  Denmark
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Location: Copenhagen
Can anyone recommend a LiFePO4 battery and charger PSU solution for the WaveIO?
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Old 28th January 2013, 07:27 PM   #1644
mjock3 is online now mjock3  United States
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Join Date: Jan 2011
Location: Wisconsin
Default Wave IO power supply

Hi, wondering if anyone has any idea what is causing an issue I am having.

The WaveIO card works fine when I run it off of the LCDS from Twisted Pair, I wanted to try another supply I have that is a better supply. It is a 5v 2A supply, when I hook it up then power everything up, my computer does not have the Luckit driver any more. If I reconnect things the way they were it appears again. Any idea why this would happen?

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Old 29th January 2013, 08:35 AM   #1645
dddac is offline dddac  Germany
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Join Date: Jul 2003
Location: Wiesbaden
XMOS-based Asynchronous USB to I2S interface
most likely a USB fabel And power SUPPLY earth / grond issue.... USB is pretty sensitive that.
Happy listening and building
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Old 31st January 2013, 03:24 PM   #1646
Ben Mah is online now Ben Mah  Canada
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Join Date: May 2012
Location: Vancouver
Default Noisy Ground with Isolated I2S

My WaveIO is currently connected to my veroboard tda1541a dac using the isolated I2S outputs. The WaveIO has its own independent power supply on the input side with its own transformer, and the isolator is powered by its own regulator at the power pins and sharing a transformer with the reclock and dem frequency divider chips and I2S attenuators on the dac board. The WaveIO input side ground is not connected to the dac side ground. The transformer primaries do share the ac mains power.

Using an old 35MHz oscilloscope the power supplies and ground on the dac appear relatively noise free, except for noise with a amplitude of approximately 30 mV peak to peak at the MCLK frequency of the WaveIO. The frequency would change with the change of 44.1 kHz music to 96 kHz music. The MCLK isolated output is not connected to the dac as I have used a clock on the dac side (not at the same frequency as the WaveIO MCLK) for reclocking.

Prior to using the I2S isolated output, the dac was connected to the non-isolated I2S and there was noise from the computer and usb harddrives getting through to the dac (approximately 0.5 volts in the region of 180kHz). The isolated outputs appear to be free of this noise.

I don't think that I have wired up the WaveIO incorrectly. Anyone else experience this? Or any ideas why this is happening or what I may have done wrong?
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Old 4th February 2013, 03:46 PM   #1647
marconi118 is offline marconi118  United Kingdom
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How to purchase this interface?

New to this forum....
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Old 5th February 2013, 12:52 AM   #1648
mjock3 is online now mjock3  United States
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Location: Wisconsin
Default How

Luckit.biz is one way to purchase.
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Old 8th February 2013, 08:46 PM   #1649
Proktos is offline Proktos  Germany
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Default Me Too

Originally Posted by new2hifi View Post
Returning to this thread after more than a year.

In contrast to most other users of WaveIO, my experience is that regardless of ground noise from non-isolated I2S, my TDA1541A based DAC still sound better with it than isolated I2S of current WaveIO. This is my personal opinion and I have no measurements to prove it.

Nonetheless, I wish to have USB isolation without resultant higher jitter from NVE IL715. Thus,

One daughter board for me as well:

1. hirez69
2. analog_sa
3. m.massimo
4. ozlegend
5. luisbock
6. vitalica
7. palmito
8. gabanyayaya
9. danny_66
10. shoom
11.12. kp93300 X 2
13. lindamar
14. merlin el mago
15. Reo
16. arkadiush1
17. jmltinc
18. zibra
19. tagheuer
20. hochopeper
21. hacker
22. Bemused
23. vanwykca
24. sandor
25. jrling
26. bismuth
27. necplusultra
28. flocchini
29. ichiban
30. edbk
31. Nikon1975
32. pawlus
33. dubai2000
34. henri47
35. presapian
36. Corpius
37. Ryssen
38. carsten.witt
39. Sidiropa
40. Ryelands
41. krautxy
42. 43. 44. 45. Mats x 4
46. ecchecequa
47. 48. lm1no2 x 2
49. Magsy
50. Jogi
51. CKL
52. needsp
53. number9
54. steve jones
55. nuriasanta
56. miksi
57. audiodesign
58. hordmop
59. cjunkk
60. Thermio
61. dex-rex
62. & 63. Claudius J. x2
64. boggy62
65. sck2288
66. rjbaldwin
67. ravid
68. igor
69. neugruen
70. Miclaud
71. Luxury54
72. mjock3
73. JLOP
74. Stixx
75. CeeVee
76. Blitz
77. Spev
78. new2hifi
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Old 10th February 2013, 10:46 AM   #1650
Lorien is offline Lorien
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Join Date: Nov 2007
Hello Proktos,
the list is updated here, per your request, thank you!
Contact link for WaveIO USB-to-I2S/SPDIF board.
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