Soekris Dam Dac

Anything to do with computer audio, hardware, software etc.
nige2000
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Location: meath

Re: Soekris Dam Dac

Post by nige2000 »

wushuliu wrote:(Weird, I thought I responded, but maybe I dreamt it)

Correct per gstew. And no way I'm doing that mod to the Oppo, replacing the clocks was dicey enough!

Nige, do you think it would be worth it to add a flipflop to the wm8004?
bare in mind as i dont know what an oppo 103 is exactly need a bit more info
had a quick flick though the diya thread lots of good stuff but missed the i2s tapping bit

i see an audio output board, you want to replace that with soekris?
whats the audio signal coming in with that ribbon cable... spdif?
sd card player, modded soekris dac, class a lifepo4 amp or gb class a/b amp, diy open baffle speakers based on project audio mundorf trio 10's
nige2000
Posts: 4253
Joined: Thu Feb 14, 2013 10:47 am
Location: meath

Re: Soekris Dam Dac

Post by nige2000 »

hmm..
think i got your thinking
spdif out to wm8004 to reclocking flip flop to soekris i2s input ( flip flop clocked from soekris master clock)

keep all with good power and should be worth a shot
sd card player, modded soekris dac, class a lifepo4 amp or gb class a/b amp, diy open baffle speakers based on project audio mundorf trio 10's
wushuliu
Posts: 180
Joined: Tue Oct 22, 2013 2:24 am

Re: Soekris Dam Dac

Post by wushuliu »

nige2000 wrote:hmm..
think i got your thinking
spdif out to wm8004 to reclocking flip flop to soekris i2s input ( flip flop clocked from soekris master clock)

keep all with good power and should be worth a shot
Exactly. I'll give it a go...
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nige2000
Posts: 4253
Joined: Thu Feb 14, 2013 10:47 am
Location: meath

Re: Soekris Dam Dac

Post by nige2000 »

heres a scribble

Image

might be interesting test having the two audio frequency clks with a switch on OE
synchronously clocking the wm8804 and 574 ff
maybe it would negate need for ff ?
but probably not

otherwise use the soekris masterclock out for both

just a thought....
in a thinking out aloud type of way.......
sd card player, modded soekris dac, class a lifepo4 amp or gb class a/b amp, diy open baffle speakers based on project audio mundorf trio 10's
wushuliu
Posts: 180
Joined: Tue Oct 22, 2013 2:24 am

Re: Soekris Dam Dac

Post by wushuliu »

Interesting. The WM8804 datasheet says this though:

In hardware mode, the OSCCLK
must be 12MHz and hence the external crystal (or applied XIN
clock) must be 12MHz. No other OSCCLK frequencies are supported in hardware mode.

This is the WM8804 board I'm using:

http://www.ebay.com/itm/Wolfson-WM8804- ... xyuaFSL~Vx

Which is hardware mode only...
Eclipse W6520R/Satori TW29R MTM
Hifime Es9038Pro
3eaudio TPA3251
wushuliu
Posts: 180
Joined: Tue Oct 22, 2013 2:24 am

Re: Soekris Dam Dac

Post by wushuliu »

Hm, maybe this board might be better? Has software mode switches.

http://www.ebay.com/itm/WM8804-S-PDIF-T ... SwOVpXff2T
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nige2000
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Location: meath

Re: Soekris Dam Dac

Post by nige2000 »

should have read more than the first page of the data sheet i guess..........

suppose id just go with a 12mhz tcxo or an ndk or equivalent then
sd card player, modded soekris dac, class a lifepo4 amp or gb class a/b amp, diy open baffle speakers based on project audio mundorf trio 10's
nige2000
Posts: 4253
Joined: Thu Feb 14, 2013 10:47 am
Location: meath

Re: Soekris Dam Dac

Post by nige2000 »

maybe just put a wm8804 on an adapter board and power it from a battery
sd card player, modded soekris dac, class a lifepo4 amp or gb class a/b amp, diy open baffle speakers based on project audio mundorf trio 10's
wushuliu
Posts: 180
Joined: Tue Oct 22, 2013 2:24 am

Re: Soekris Dam Dac

Post by wushuliu »

nige2000 wrote:maybe just put a wm8804 on an adapter board and power it from a battery
Eventually I will remove the LDO on the current board and power directly the 3.3 V from a battery but one step at a time!
Eclipse W6520R/Satori TW29R MTM
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nige2000
Posts: 4253
Joined: Thu Feb 14, 2013 10:47 am
Location: meath

Re: Soekris Dam Dac

Post by nige2000 »

wushuliu wrote:
nige2000 wrote:maybe just put a wm8804 on an adapter board and power it from a battery
Eventually I will remove the LDO on the current board and power directly the 3.3 V from a battery but one step at a time!
well u could leave the ldo on there not powered and just add the 3.3v
the caps will slow the speed of the battery but still will be a good indicator
sd card player, modded soekris dac, class a lifepo4 amp or gb class a/b amp, diy open baffle speakers based on project audio mundorf trio 10's
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