rtd said:
Hi Thomas,
Hope you're feeling well. To continue have u got some CS8414 or better CS8412 left ( so that not to solder SMD) and give me the price.
( here or by mp)
thanks,
The non-profit in box with on rigth a special large black heatsink four the SAA7220 power regulator.
Marc
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Marc
Looks XLNT idefixes! 🙂
Any chance of getting a closeup picture of the regulator supply for SA7220?
Good job!
By the way, how do you prefer the sound? With SA7220 or without etc..?
/Z
Any chance of getting a closeup picture of the regulator supply for SA7220?
Good job!
By the way, how do you prefer the sound? With SA7220 or without etc..?
/Z
It's difficult since the 7805 is under PCB mounted on a Alu plate. The black Heatsink is mountet on this Alu plate. Here's a drawing
In dark grey the black heatsink sawn from side, in orange the pcb, in grey the alu plate. I hope it's clear enough.
Marc
An externally hosted image should be here but it was not working when we last tested it.
In dark grey the black heatsink sawn from side, in orange the pcb, in grey the alu plate. I hope it's clear enough.
Marc
Thomas, are you sending my DAC? I have been waiting for my ultimate v3 DAC, since you posted a month ago.
Hi there ! Another Frenchie with us even if i don't leave in my own country ! 😉 Well, i have heared about this nice thread and try to follow now, hoping i will be able to catch one of them... I am building mi Hi-fi system only in DIY an some of us told me it's missing one DAC. So, i am here !!!!😀
Tubes anyone?
I m just curious if anyone tried a tube output stage on this Dac?
Maybe there already is a schematic for that somewhere on this thread.. 🙂
/Z
I m just curious if anyone tried a tube output stage on this Dac?
Maybe there already is a schematic for that somewhere on this thread.. 🙂
/Z
Post 1123 shows my version of a tube output for this dac.
You will also find additionnal information in previous posts.
I had tried the Nelson Pass FET i/v stage which works beautifully with this dac. If I remember well, Pass did not accept that Thomas uses his i/v with the present dac.
So I designed this tube stage as an alternative to Nelson's i/v.
Both FET i/v and the tube section produce excellent sound.
It will require a bit more skill since I did not produce a printed circuit board for it. So, point to point construction is the technique to use. The effort is well worthed because you will love the results.
I have 4 or 5 dacs here for comparaison, but this is the one I listen to, every day.
Jean=Charles
You will also find additionnal information in previous posts.
I had tried the Nelson Pass FET i/v stage which works beautifully with this dac. If I remember well, Pass did not accept that Thomas uses his i/v with the present dac.
So I designed this tube stage as an alternative to Nelson's i/v.
Both FET i/v and the tube section produce excellent sound.
It will require a bit more skill since I did not produce a printed circuit board for it. So, point to point construction is the technique to use. The effort is well worthed because you will love the results.
I have 4 or 5 dacs here for comparaison, but this is the one I listen to, every day.
Jean=Charles
Hi Jean-Charles
Thanx! It shure looks like something i might try. You schematic looks easy enoufgh for me 🙂
What kind of resistors is used? normal metalfilms?
Also by every resistor there is a "1" and a "2".. What is the reason for this?
Do you have some pictures of your currant Dac? 🙂
Thanx!
/Z
Thanx! It shure looks like something i might try. You schematic looks easy enoufgh for me 🙂
What kind of resistors is used? normal metalfilms?
Also by every resistor there is a "1" and a "2".. What is the reason for this?
Do you have some pictures of your currant Dac? 🙂
Thanx!
/Z
Hi Zei,
The 1 and 2 are present with every parts. They are introduced by the Orcad software, to be used for routing in the Layout section of the same software. They are of no interest here.
I used regular metal film resistors, that is what I had.
Caddock MK132 resistors could be a good choice. There are only a few, so it should not raise the price by much.
Frankly, I did not use Caddocks myself, yet. One day, if I decide to house everything in a decent cabinet, I may introduce these upgrades.
The only photo that I have is posted in #1107. There you have, side by side, both the Pass FET i/v and my tube stage.
The project is still experimental and offerered to those who would like to use a tube output for this particular dac.
Since Thomas produced a limited number of dacs, it is not my intention to go a long road with this stage.
Jean-Charles
The 1 and 2 are present with every parts. They are introduced by the Orcad software, to be used for routing in the Layout section of the same software. They are of no interest here.
I used regular metal film resistors, that is what I had.
Caddock MK132 resistors could be a good choice. There are only a few, so it should not raise the price by much.
Frankly, I did not use Caddocks myself, yet. One day, if I decide to house everything in a decent cabinet, I may introduce these upgrades.
The only photo that I have is posted in #1107. There you have, side by side, both the Pass FET i/v and my tube stage.
The project is still experimental and offerered to those who would like to use a tube output for this particular dac.
Since Thomas produced a limited number of dacs, it is not my intention to go a long road with this stage.
Jean-Charles
Jean-Charles.
Thanx for the support. 🙂
I realy like this DAC and it presents a new dimension to my current setup.
The tube output stage is just cause i,m curious to see what kind of differences i might spot (If any) 🙂
May i ask what you would recomend of the two outputstages?
The Pass thing or yours? 😎
Also if i would try the Pass stage, is there anything i should think of ?
Sry for all questions..
/Z
Thanx for the support. 🙂
I realy like this DAC and it presents a new dimension to my current setup.
The tube output stage is just cause i,m curious to see what kind of differences i might spot (If any) 🙂
May i ask what you would recomend of the two outputstages?
The Pass thing or yours? 😎
Also if i would try the Pass stage, is there anything i should think of ?
Sry for all questions..
/Z
Zei,
I have tried both. Personnaly I only use the tube stage now. But I remember not seeing important differences between the two.
So , my advice would be to go with Nelson's i/v because it would be easier to build and less expensive. There are individuals that offer this stage in kit form, that includes all parts and pcb.
It is well worthed to add one of these stages to Thomas's dac because it improves the performance and enhances the great qualities of this dac. It will also remove, almost completely, the clock noise I was complaining about.
I like it better with the 4X oversampling, digital filter and reclocking circuits.
It now compares very well with all the expensive dac I came accross.
Jean-Charles
I have tried both. Personnaly I only use the tube stage now. But I remember not seeing important differences between the two.
So , my advice would be to go with Nelson's i/v because it would be easier to build and less expensive. There are individuals that offer this stage in kit form, that includes all parts and pcb.
It is well worthed to add one of these stages to Thomas's dac because it improves the performance and enhances the great qualities of this dac. It will also remove, almost completely, the clock noise I was complaining about.
I like it better with the 4X oversampling, digital filter and reclocking circuits.
It now compares very well with all the expensive dac I came accross.
Jean-Charles
Hi Jean-Charles
Thanx for you input. I realy tried to search for kits etc on the Pass i/v . But i could not find any.
Would it be possible for you to post a link or something ?
Btw, You got mail
Thanx
/Z
Thanx for you input. I realy tried to search for kits etc on the Pass i/v . But i could not find any.
Would it be possible for you to post a link or something ?
Btw, You got mail
Thanx
/Z
Zei,
You will find your answer here.
http://www.diyaudio.com/forums/showthread.php?s=&threadid=30208&perpage=10&pagenumber=1
Jean-Charles
You will find your answer here.
http://www.diyaudio.com/forums/showthread.php?s=&threadid=30208&perpage=10&pagenumber=1
Jean-Charles
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