PPang V3 USB Card

Anything to do with computer audio, hardware, software etc.
nige2000
Posts: 4253
Joined: Thu Feb 14, 2013 10:47 am
Location: meath

Re: PPang V3 USB Card

Post by nige2000 »

sima66 wrote:TCXO clock in your card?
YEA
dont think the clocks the issue

i was using these

http://www.foxonline.com/pdfs/fox924.pdf

and more recently these tiny f**kers

http://www.abracon.com/Oscillators/ASTX-H11.pdf
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: PPang V3 USB Card

Post by nige2000 »

nige2000 wrote:
sima66 wrote:TCXO clock in your card?
YEA
dont think the clocks the issue

i was using these

http://www.foxonline.com/pdfs/fox924.pdf

and more recently these tiny f**kers

http://www.abracon.com/Oscillators/ASTX-H11.pdf
ok

i bypassed the ps cap, inverter, transformer and the dc blocking cap on the output

much improved
far sharper image livelier sound atmospheric

probably more atmosphere than my clock

think ill leave this clock formula in for a while

update:
yep definitely prefer the ocxo direct into silverstone card over the txcos
more lively and more depth/layers decay etc
is difference is worth the cost or not?
theres probably cheaper ways to gain a similar lift in sq for most people
but this clock is staying in :)
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
sima66
Posts: 872
Joined: Tue Oct 08, 2013 7:35 pm
Location: Canada

Re: PPang V3 USB Card

Post by sima66 »

nige2000 wrote:
nige2000 wrote:
sima66 wrote:TCXO clock in your card?
YEA
dont think the clocks the issue

i was using these

http://www.foxonline.com/pdfs/fox924.pdf

and more recently these tiny f**kers

http://www.abracon.com/Oscillators/ASTX-H11.pdf
ok

i bypassed the ps cap, inverter, transformer and the dc blocking cap on the output

much improved
far sharper image livelier sound atmospheric

probably more atmosphere than my clock

think ill leave this clock formula in for a while

update:
yep definitely prefer the ocxo direct into silverstone card over the txcos
more lively and more depth/layers decay etc
is difference is worth the cost or not?
theres probably cheaper ways to gain a similar lift in sq for most people
but this clock is staying in :)
OK, in the end still what was expected! :)
BTW, what is the difference in the cost?

Next step is ocxo on the MoBo? :)
I5 4440+TXCOmobo+JCAT Femto-Intona-JKRegen+HynesPS+TeraDak ATX-820W=JCATusb=DiverterHR=Wadia 931/922(GNSC mod)=PassLabsXA100.5=2xValhalla=Stacked&moded ESL57+JAS SuperTweet+2MJ Acoustics Ref.I
4SteinHarmonizers;RR777;Tellus;StillpointsUltraSS
nige2000
Posts: 4253
Joined: Thu Feb 14, 2013 10:47 am
Location: meath

Re: PPang V3 USB Card

Post by nige2000 »

sima66 wrote:
OK, in the end still what was expected! :)
BTW, what is the difference in the cost?

Next step is ocxo on the MoBo? :)
ocxo>txco

well yea should be the natural order of things

when i was trying to fix the ppa v3 i was trying to figure out what the inverter, resistors, transformer and dc blocking cap is for because the signal always dis-improved on its route through the inverter, i also found resistors a signal bottleneck in other applications
i routed the signal directly into the transformer and dc blocking cap that had very little improvement sq wise
then routed direct to usb chip and i knew it was good
on a-b testing over many tracks the microdetail of the ocxo is clearly ahead of the tcxo
its apparent to me that the transformer and dc blocking cap is doing harm smoothing/dumbing down a superior xo to the extent that id prefer a txco without them
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
Post Reply