Just some picture's of my finished DDDAC...

lykkedk · 16th February 2007, 08:58 PM

Finally, i got my dac, in a box.

The dac is a DDDAC 1543 mkII, with s/pdif / usb input, and a single 12xtda1543 tower. - The little pcb at the backside of the dac, is for connecting digital in from toslink or coax.
The dac, had been playing for some time, but i just finished the box today, and now i can't wait showing it.

Doede, the father of dddac, has done a really great dac, easy to get working, and Doede is allways ready to answer some quick quistion's along the way.

The sound from it, is excellent (through my ear's

).... And here is some pics.

lykkedk · 16th February 2007, 09:00 PM

Another one !

lykkedk · 16th February 2007, 09:01 PM

3...

lykkedk · 16th February 2007, 09:02 PM

Her come's the last one - Have a nice weekend...

Bas Horneman · 16th February 2007, 09:05 PM

Oeee.....nice build....you must be proud!

motherone · 16th February 2007, 09:49 PM

Very nice. How warm does it run?

I_Forgot · 16th February 2007, 09:55 PM

Quote:

Originally posted by lykkedk
Another one !

It looks very nice, but your RCA connectors appear to be grounded to the box. In analog circuits this can result in ground loops that make amplifiers hum. In digital circuits the added ground noise can result in higher jitter (if you care about such things).

Usually, the best way to ground input/output shielded-type connectors is to isolate them from the chassis and run shielded or twisted cable from the connector, including the ground lug, to the ground on the PCB and then use a single point to connect the PCB to the chassis.

The power supply ground should also connect to that point.

I_F

lykkedk · 17th February 2007, 05:47 AM

Thanks for the reply.
The DAC, is what i call thermic stable, e.g, it runs good handwarm 40-50 degree C.
It's powered from a 12vdc battery, when i turn off the dac, the charger, charges the battery.
The shield is taken from the little pcb, at the back of the dac, the cables to the shield is no longer than 30mm. The dac is completly quiet.
Ohhh... i didnt no the issue with the jitter thing (have to learn every day thanx), which could be caused by shielded rca, i will consider making that, when i get my hand on some isolated rca's., don't know if it make's any difference.
Both the usb and s/pdif part are clocked with a tent clock. and the dac is sounding beautiful...

gjash · 17th February 2007, 12:47 PM

Very nice looking case! Where did you get it? What are the switches in front? I'm a total newbie but my first project will be something similar.

Cheers,
greg
osaka, japan

lykkedk · 18th February 2007, 05:55 AM

The case is diy... Made of 3mm alu / 3mm acryl. The big switch in front is from conrad electronics, germany.

16th February 2007, 09:05 PM	#5
Bas Horneman diyAudio Moderator Emeritus Join Date: Apr 2002 Location: The Netherlands Blog Entries: 18	Oeee.....nice build....you must be proud! __________________ Boatanchor amps forum My "adventures" in audio

17th February 2007, 05:47 AM	#8
lykkedk diyAudio Member Join Date: Dec 2002 Location: Denmark, Fredericia	Thanks for the reply. The DAC, is what i call thermic stable, e.g, it runs good handwarm 40-50 degree C. It's powered from a 12vdc battery, when i turn off the dac, the charger, charges the battery. The shield is taken from the little pcb, at the back of the dac, the cables to the shield is no longer than 30mm. The dac is completly quiet. Ohhh... i didnt no the issue with the jitter thing (have to learn every day thanx), which could be caused by shielded rca, i will consider making that, when i get my hand on some isolated rca's., don't know if it make's any difference. Both the usb and s/pdif part are clocked with a tent clock. and the dac is sounding beautiful... __________________ DIYAudio crazy.... LeachAmp, PearlPhono, Pumpkin, F4 DualMono, DDDac, HalfChang Spk., LinuxAudio, Squeezebox substitute, Drek inductorloaded pre-amp.

18th February 2007, 05:55 AM	#10
lykkedk diyAudio Member Join Date: Dec 2002 Location: Denmark, Fredericia	The case is diy... Made of 3mm alu / 3mm acryl. The big switch in front is from conrad electronics, germany. __________________ DIYAudio crazy.... LeachAmp, PearlPhono, Pumpkin, F4 DualMono, DDDac, HalfChang Spk., LinuxAudio, Squeezebox substitute, Drek inductorloaded pre-amp.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Clear picture picture of KSS-273B	eledora	Digital Source	0	27th October 2007 01:10 PM
Finished Dac Picture	maartentje	Digital Source	3	1st March 2004 05:10 PM
P3A mono blocks finally finished (picture post)	sobazz	Solid State	12	31st August 2003 08:36 PM
Finished ESL picture (finally!)	phishead8	Planars & Exotics	23	21st November 2002 07:55 AM


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

16th February 2007, 09:49 PM	#6
motherone diyAudio Member Join Date: Apr 2003 Location: Seattle	Very nice. How warm does it run?

17th February 2007, 12:47 PM	#9
gjash diyAudio Member Join Date: Feb 2007 Location: Osaka, Japan	Very nice looking case! Where did you get it? What are the switches in front? I'm a total newbie but my first project will be something similar. Cheers, greg osaka, japan

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read