Audiosector USB DAC - Page 2

mattmcl · 16th October 2009, 03:05 PM

Have you tried installing something else in the USB port on the computer, to make sure it's working? I've had USB ports go bad before and it's an easy thing to check.

Peter Daniel · 16th October 2009, 04:49 PM

It's rarely a hardware problem, most likely it's related to software/interface. Some people experienced similar problems in a past, especially after sudden power disruption during a storm, etc.

Switch everything off, wait an hour or so, connect USB cable to a DAC and power on the DAC first. Then power on computer.

If you can't make it work, ship it to me and I will check it out.

For more info on system configuration, I recommend this link: The Art of building Computer Transports

serenechaos · 16th October 2009, 06:12 PM

Yes, tried a couple other, different DACs, back to using one of them now.
Tried other USB ports.
Tried a different computer.
Tried power on to DAC first, computer off for an hour, a day, a couple days.

There have been sudden power disruptions from storms.
Maybe need a UPS for this circuit?

I'll ck out the website, & if I still can't figure out anything ship it to you (Peter),
Thanks again,
r

MANOLIS123 · 23rd October 2009, 02:11 PM

Just today I received the SPDF dac and from the first hour it sounds marvelous...
I think that is the best DAC in my system since today!!..
It excels my Lavry DA 10 dac very easily in all points

Thanks again for this "best buy" product
Manolis

Tea-Bag · 4th November 2009, 12:34 AM

Have had my kit running for awhile. Lost the schematic,
Can someone tell me what resistor to put and where for the LED to work?

Thanks!

Peter Daniel · 4th November 2009, 12:42 AM

Put the LED across one of those large black caps. It is approx 12V there and here's how to calculate the series resistor: LED calculator for single LEDs

HKC · 1st December 2009, 02:09 PM

Hi

I am currently using the USB Dac. I would like to know is there any way to keep the USB input but modify to balanced output as I am going to up grade my entire stereo system from single ended to balanced. Please advice.

Peter Daniel · 1st December 2009, 03:06 PM

Yes, you can easily do that. Please see attached schematic posted by dddac, of course you don't need to use 12x TDA1543, but a single one:

HKC · 1st December 2009, 10:45 PM

Hi Peter

Thank you for posting the schematic. It is very interesting.
Do you have the link for me to take a look of the complete dddac article?

Best Regards

HKC · 2nd December 2009, 12:40 AM

Hi Peter

I got this schematic from the web it looks very similar to the one you posted but no output transformers. Please comment.

16th October 2009, 04:49 PM	#12
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	It's rarely a hardware problem, most likely it's related to software/interface. Some people experienced similar problems in a past, especially after sudden power disruption during a storm, etc. Switch everything off, wait an hour or so, connect USB cable to a DAC and power on the DAC first. Then power on computer. If you can't make it work, ship it to me and I will check it out. For more info on system configuration, I recommend this link: The Art of building Computer Transports __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

23rd October 2009, 02:11 PM	#14
MANOLIS123 diyAudio Member Join Date: Apr 2006 Location: SERRES GREECE	Spdf dac Just today I received the SPDF dac and from the first hour it sounds marvelous... I think that is the best DAC in my system since today!!.. It excels my Lavry DA 10 dac very easily in all points Thanks again for this "best buy" product Manolis

4th November 2009, 12:34 AM	#15
Tea-Bag not politcally affiliated diyAudio Member Join Date: Feb 2006 Location: Kennebunk Blog Entries: 7	Have had my kit running for awhile. Lost the schematic, Can someone tell me what resistor to put and where for the LED to work? Thanks! __________________ Salas Boards 2013 #2 CLICK HERE \| F6 Covertible PCB GB Boards Available \|DCB1 boards and KITS available PM\|SemiSouth R125, R100, R100A Available CLICK HERE \|F5TC Boards Sign UP CLICK HERE

4th November 2009, 12:42 AM	#16
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	Put the LED across one of those large black caps. It is approx 12V there and here's how to calculate the series resistor: LED calculator for single LEDs __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

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16th October 2009, 03:05 PM	#11
mattmcl diyAudio Member Join Date: Apr 2009	Have you tried installing something else in the USB port on the computer, to make sure it's working? I've had USB ports go bad before and it's an easy thing to check.

16th October 2009, 06:12 PM	#13
serenechaos diyAudio Member Join Date: Feb 2004 Location: los alamos	Yes, tried a couple other, different DACs, back to using one of them now. Tried other USB ports. Tried a different computer. Tried power on to DAC first, computer off for an hour, a day, a couple days. There have been sudden power disruptions from storms. Maybe need a UPS for this circuit? I'll ck out the website, & if I still can't figure out anything ship it to you (Peter), Thanks again, r

1st December 2009, 02:09 PM	#17
HKC diyAudio Member Join Date: Jan 2003 Location: Hong Kong	Hi I am currently using the USB Dac. I would like to know is there any way to keep the USB input but modify to balanced output as I am going to up grade my entire stereo system from single ended to balanced. Please advice.

1st December 2009, 10:45 PM	#19
HKC diyAudio Member Join Date: Jan 2003 Location: Hong Kong	Hi Peter Thank you for posting the schematic. It is very interesting. Do you have the link for me to take a look of the complete dddac article? Best Regards

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