High Performance WM8741 Upsampling DAC New Version build thread (show 'n tell too) - Page 11 - diyAudio
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Old 9th March 2012, 12:06 PM   #101
TheGimp is offline TheGimp  United States
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for a general case nothing regal. I miss-stated it.

As long as the load impedance reflected to the driver is correct there should be no problem if the transformer is not a dual primary (CT) version like I'm using with the ct grounded.

Using the transformer I have wouldn't matter either if you left the ct floating.

I was think specifically about the Edcor WSM10K/600 that I must have been discussing in another thread.
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Old 12th March 2012, 09:19 AM   #102
Turbon is offline Turbon  Sweden
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Hmmm, what rotary encoder should I use?

Brgds
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Old 12th March 2012, 02:00 PM   #103
Turbon is offline Turbon  Sweden
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OK, I had to test it since the minidac board is ready. I read through the configuration text and gave it a try in HW mode. With only USB connected the led2 gave light. I added power and all 3 shone. My PC found it as an USB Audio device. I chose 192khz and OSR pins accordingly and kept the FSEL pins open...

Silence... The only sound I get is a 2sec "Peeeeeeew" when I switch it off with the combined switch/potentiometer. I have tried the mute pins in every possible configuration without luck.

The rest of the pins are all open.

So this is my story - any successes out there?

Brgds
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Old 12th March 2012, 02:44 PM   #104
zinsula is offline zinsula  Switzerland
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You may check the max samplerate supported ba PCM2707......
USB Audio - USB DAC - PCM2707 - TI.com
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Old 12th March 2012, 02:50 PM   #105
Turbon is offline Turbon  Sweden
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Quote:
Originally Posted by zinsula View Post
You may check the max samplerate supported ba PCM2707......
USB Audio - USB DAC - PCM2707 - TI.com
Thanks zinsula, I'm feeding it with 16/44.1 cd rate so it shouldnt be a problem.

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Old 12th March 2012, 03:38 PM   #106
Turbon is offline Turbon  Sweden
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Reg4 gets hot, reg5 is quite untouchable - I will double check these feeds.

Brgds
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Old 12th March 2012, 03:42 PM   #107
tcpoint is offline tcpoint  United States
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Post some pictures.
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Old 12th March 2012, 04:12 PM   #108
Turbon is offline Turbon  Sweden
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Quote:
Originally Posted by tcpoint View Post
Post some pictures.
Yeah, right... How do I do that? Does insert image work or do I need to sign up at some other place and link afterwards? If the later forget it...

I'll give it a test though but it will take some time. Best luck ;-)

Brgds

Jepp, as I thought - insert url of my image... I don't want to do this....
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Last edited by Turbon; 12th March 2012 at 04:21 PM.
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Old 12th March 2012, 07:26 PM   #109
TheGimp is offline TheGimp  United States
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Clickon "Go Advanced" below the quick reply text box. Then scroll down and select "Manaage Attachments" and it will allow you to upload photos, etc.
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Old 12th March 2012, 07:32 PM   #110
Turbon is offline Turbon  Sweden
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Clickon "Go Advanced" below the quick reply text box. Then scroll down and select "Manaage Attachments" and it will allow you to upload photos, etc.
Thanks TheGimp. I'll try that from the machine where I have tha photos probably tonight - if not tonight then tomorrow.

The best would be if someone pointed the finger on the problem...

Brgds
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