The iv resistors measure fine. I measure a short across the v com cap terminals with or without the cap in place. Looks a bit like the chip may have gone?
You are a genius! A small short on the Dac chip pins. All working and sounding awesome now!
I will post some pics when I add the chokes next week. One Belleson 8v reg arrived only putting out 5.6v so I'm waiting got another one. At the mo I've got a 7v New Class D on one channel and a Belleson on the other........
Hi guys.
I have finally decide to try out this exiting dac. Can't wait to do a shotout against my Buffalo IIIse dual mono.
After reading a lot of pages the last days, I've decide to go for 4 decks and the Cinemags.
Need answer on a few things that is still not perfectly clear to me.
1. Is it ok to use 33R ( IV resistors on the motherboard ) instead of 34R ? ( 4 decks )
2. Must there bee a resistor between the secondary on the Cinemags (xlr out ) If so,
What value ? Shinkoh Tantalum 2 watt is my choice for the IV resistors. But since they are pricy maybe it's ok to use some Takman carbon or another ok resistor ?
3. Is the hookup-wire between the dac boards included ? If not, what gauge is correct here?
Best " the dancer "
I have finally decide to try out this exiting dac. Can't wait to do a shotout against my Buffalo IIIse dual mono.
After reading a lot of pages the last days, I've decide to go for 4 decks and the Cinemags.
Need answer on a few things that is still not perfectly clear to me.
1. Is it ok to use 33R ( IV resistors on the motherboard ) instead of 34R ? ( 4 decks )
2. Must there bee a resistor between the secondary on the Cinemags (xlr out ) If so,
What value ? Shinkoh Tantalum 2 watt is my choice for the IV resistors. But since they are pricy maybe it's ok to use some Takman carbon or another ok resistor ?
3. Is the hookup-wire between the dac boards included ? If not, what gauge is correct here?
Best " the dancer "
5V Problems
dwjames,
I use a 5V SPM Belleson on the main board which is also providing power to the WaveIO optical isolation chip and main board LEDs. Maybe the load on your Vreg is too low for stable regulation. Try adding a 330 or 470 ohm resistor across the Main board Vreg to raise the load.
dwjames,
I use a 5V SPM Belleson on the main board which is also providing power to the WaveIO optical isolation chip and main board LEDs. Maybe the load on your Vreg is too low for stable regulation. Try adding a 330 or 470 ohm resistor across the Main board Vreg to raise the load.
Wish you already good fun with the built 🙂
On your questions,
33 ohm is ok
15 k is recommended, but feel free to just listen and try. It has only to do with transient response
Hook up wire is included.
AS Edison said, genius is 10% inspiration and 90% perspiration - no one can argue that you embody both of these virtues in your audio efforts.
Separate thread for fully upgrading a single board DAC
Undarra:
First - congratulations on your 1/2 clock delay circuit success. That makes 4 out of 4 reporting a major improvement in SQ on red boards.
Yes. I will start a separate thread for fully upgrading a single board DAC and also include some options successfully used by others. I will spell out in complete detail everything I have done. I agree that these upgrades do get scattered in this forum.
I can't wait for the unveiling of Doede's DSD DAC.
Undarra:
First - congratulations on your 1/2 clock delay circuit success. That makes 4 out of 4 reporting a major improvement in SQ on red boards.
Yes. I will start a separate thread for fully upgrading a single board DAC and also include some options successfully used by others. I will spell out in complete detail everything I have done. I agree that these upgrades do get scattered in this forum.
I can't wait for the unveiling of Doede's DSD DAC.
Could I get a confirmation that the "dot" on the tent clock is the ground pin? The diagram on Tentlabs is unclear to me. A "dot" on the circuit board would make this a non-issue.
I am pretty sure im right, but there is no confirmation on the DDDAC or Tentlab site. I am sure this common knowledge to most of you, but I don't want to have to unsolder and resolder this expensive part.
I am pretty sure im right, but there is no confirmation on the DDDAC or Tentlab site. I am sure this common knowledge to most of you, but I don't want to have to unsolder and resolder this expensive part.
That would be fantastic and if you can post here the link to the new thread I would appreciate it.
As I am not sure the dot is always printed on the same position, I used as indication the only sharp corner of the tent clock. This sharp corner is indicated on the mainboard as well. If you refer to this, you will have no problems....
Well that's me in for some desoldering then......Some clear instruction would be helpful here rather than relying on guesswork