Actually I don't know, I checked in the website audio-creative but there are only the cinemag...
I just measured my DAC output (mono mode with oversamplig for now), 135ohm on I/V conversion, and 6,8k on pin 20, and it has 3V ! Isn't to much?
What tube preamplifier ar you using?
I answered you with 3 mails Enrico.... I seem to be on SPAM 😱
pls check and send another mail?
I do have some stock most of the time. But prices vary, hence only directly by email. It is a special thing, pretty expensive and hence a "private" thing
send me just normal mail for discussion, this goes way off topic for this thread.
mail at doede dot de if you know what I mean 🙄
Hello,
It seems Billy boy did call it a Day?
Right now in central Vietnam.
A few days ago they did have a flood coming from a high water river. The government did open some reservoirs because they were probably full combined with a few days of rain that did give more downfall than a complete year of rain in my country. Some restaurants had 2 meter so nearly 7 foot water inside but most of them are all ready open again.
I am sure they will not give up.
Greetings, Eduard
It seems Billy boy did call it a Day?
Right now in central Vietnam.
A few days ago they did have a flood coming from a high water river. The government did open some reservoirs because they were probably full combined with a few days of rain that did give more downfall than a complete year of rain in my country. Some restaurants had 2 meter so nearly 7 foot water inside but most of them are all ready open again.
I am sure they will not give up.
Greetings, Eduard
billyboyk, don't give up! And if you do, I'd be happy to recycle your DDDAC... ;-)
Enrico (and others), I've been using the Sowters for three days now. They're unbelievably good and without doubt the biggest upgrade I've made to my DAC/streamer setup. I waited for months wondering if they could possibly be worth several times the value of my Cinemags but they are.
The level of detail you can hear compared to the Cinemags is remarkable. Dynamics have also taken a leap forward. Anyone on the fence should jump in and speak to Doede about ordering a pair.
PS I'm running a single DAC board and your buffer board Enrico. Tempted to try a DAC stack but my case (and wallet) won't allow it.
The level of detail you can hear compared to the Cinemags is remarkable. Dynamics have also taken a leap forward. Anyone on the fence should jump in and speak to Doede about ordering a pair.
PS I'm running a single DAC board and your buffer board Enrico. Tempted to try a DAC stack but my case (and wallet) won't allow it.
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Nice feedback.
Maybe one day I'll take the plunge and call my buffered single decker "end game".
Maybe one day I'll take the plunge and call my buffered single decker "end game".
Hi Brumiam, fully agreed, the Sowter are a must for this DAC.
The buffer is a valuable upgrade for the single board configuration but the upgrade to 4 boards (with the Sowter) is another huge step ahead mainly in the 3D imagin...
The buffer is a valuable upgrade for the single board configuration but the upgrade to 4 boards (with the Sowter) is another huge step ahead mainly in the 3D imagin...
...I agree too and even better the more DAC boards you have. The extra gain the Sowters give also help a lot.
Hi All,
Ive finally found the time to complete my DDDAC build and everything 'appears' to be fine.... except I am getting no sound!!!!
I have a 4 deck of the latest boards, being fed by a 12V Sjostrom SSR01. All LEDs are lit on all 4 boards, and I am biasing 40mv from each channel on each board. I have quadrupled checked the jumpers on the WaveIO board, fully installed the drivers on my PC and ensured sound is being routed to the DAC. I have the output connected to Cinemags and am using balanced connections in to a Hypex NC400 amp.
I do get a slight thump from the speakers at switch on.
Anybody ever come across a similar thing? With my history it is usually one little detail I have missed. Are there any key measurements I can take such as across the IV resistors etc to test?
Thank you!
Ive finally found the time to complete my DDDAC build and everything 'appears' to be fine.... except I am getting no sound!!!!
I have a 4 deck of the latest boards, being fed by a 12V Sjostrom SSR01. All LEDs are lit on all 4 boards, and I am biasing 40mv from each channel on each board. I have quadrupled checked the jumpers on the WaveIO board, fully installed the drivers on my PC and ensured sound is being routed to the DAC. I have the output connected to Cinemags and am using balanced connections in to a Hypex NC400 amp.
I do get a slight thump from the speakers at switch on.
Anybody ever come across a similar thing? With my history it is usually one little detail I have missed. Are there any key measurements I can take such as across the IV resistors etc to test?
Thank you!
On the main board, check that the switch for selecting SPDIF or I2s input is connected properly.
If the switch lever is pointing up, it will connect the opposite terminal to ground.
Hi Alex, yeah I was hoping it was this but didn't change anything. I have actually just soldered in a wire jumper between USB i2s and ground as I don't use SPDIF at all 😕
For testing purpose, I would definitively test with spdif, so you can deduct if it is the the source or the DAC. Do not forget to change the wire bridge for that
Just checking, what DC voltage do you get on POS and NEG versus ground ?
I still believe it is a source I2S issue just try....
Or when you have a scope, check for I 2S signals at the input of the top DAC board, so you are sure...
First thanks to Doede for the replacement of the motherboard on which the SPDIF receiver was effectively deficient.
With the new card everything is in order.
I have a question about the 12V PSU.
My DAC has 4 decks.
My supply is currently one transformer 300VA, 2 x15V
rectifier, choke LL1694, 2*2200, chokeLL1694 3*2200 with bleeder 75 ohms parallel.
When I plug the motherboard with the 4 decks I have 11.6 V. instead of 12V.
I think this voltage is sufficient for the ldo regulators of the DAC(s) as well as for the Tent shunt. Otherwise I can slightly increase the bleeder to 90 ohms to increase the voltage ??
Pierre
With the new card everything is in order.
I have a question about the 12V PSU.
My DAC has 4 decks.
My supply is currently one transformer 300VA, 2 x15V
rectifier, choke LL1694, 2*2200, chokeLL1694 3*2200 with bleeder 75 ohms parallel.
When I plug the motherboard with the 4 decks I have 11.6 V. instead of 12V.
I think this voltage is sufficient for the ldo regulators of the DAC(s) as well as for the Tent shunt. Otherwise I can slightly increase the bleeder to 90 ohms to increase the voltage ??
Pierre
THanks Pierre for Feedback that all is fine now and of course thanks to Audio Creative who did the service replacement
The voltage 11.6 is enough, no problem.
Thanks for the help, Deode. I tidied up my soldering on the main board and now know I definitely have i2s signal as the audio streaming led lights up and I get some sound. However, it's very quiet and distorted from the right channel, and the left channel still has no sound.
Voltages are
Left channel : pos to common = 5v, neg = 3v
Right channel : pos to common = 5v, neg = 4v
Do those measurements sound high and uneven? Not sure what would be causing the distorted sound?
well these voltages are definitively wrong. it should be ~2,7 - 2,8V. before anything else this must be fixed. So first check: you did not install the 6.1 k resistor, right? only the current source? now did you trim all boards at 40mV? did you install the Rloads correctly and correct value? also check carefully if you have 8 Volt supply voltage at the DAC chips. Also post a nice high res image of the top dac board to check, also from the main board where the POS and NEG pins are