Telstar said:
Hi,
when start listening DI DAC (now 8X4) i stopped looking for other DACs or CD-players. I use iMac G3 with USB module. All music in the HD; very practical; remote...
It sounds analog, it is difficult to hear any digital artifacts in it.
It produces natural fuller sound, instruments are in their positions, easy to recognise limits of the recording room or hall. Here feeling is that everything sounds correct, even if recording is not good one.
It has no special color of sound; like sweet, warm... It depense on recording.
Complex music, like classsic, no problem to listen anymore.
Only mod forl DI 8X4 will be tube stage for mixed mode.
... just wanted to share...
*
As i mentioned i went for complete set of EC designs.
*
Amplifier from John is already working (without housings, needs small adjustments).
I tried and listen many amp stuff, but this one sounds best for me.
It sounds natural, transparent, fast. You dont have feeling that amplifier add or reduce something.
No complain about sound qualities; Great!
Amp has installed current sources with 3 Jfets, Arcol 0,1% resistors, schottky diodes and Panasonic FC capacitors.
*
I slowly collecting parts also for Sonic resonators. Magneplanars sold.
Most of vital parts are got already, thanks to John.
I could not affort to buy complete build set.
Thanks John.
best regards,
Bostjan
I second that. As time allows I will also transform my DI16 into another DI8*4 which is worth every pain 😉
That way, I will own two DI8*4! More than you do, Bostjan
😀 , he, he... Cheers,
M
dddac said:
could be very interesting to hear that...
but more handmade towers... oh no, please
only machine work next time
any recommendations on a suitable CD transport? I'd love to try the CD-Pro2LF but it's a bit pricey, and I need a controller like this (http://diyparadise.com/cdm12controller.html) as well. Another option with the CDM12 controller is the "short loader mk3". This seems like a good option, if I could only find a user player with this transport.
I have found a few CD-Pro (VAM1252) for sale, but I'm not sure if they need a controller or not (anyone?). This would be a great solution if these could be jumpered or programmed to work.
I also discarded all the Teac and Pioneer transports for fear that they would not work with the required i2s "flavor". Also, my research on whether or not a philips / marantz sacd player would have the compatible i2s format didn't turn up much useful information.
So, any recommendations on a cheap player that I could purchase? If not, then any recommendations on the compatible decoder / controllers chips that are known to work with the ecdesgins dacs natively?
Thanks!
I have found a few CD-Pro (VAM1252) for sale, but I'm not sure if they need a controller or not (anyone?). This would be a great solution if these could be jumpered or programmed to work.
I also discarded all the Teac and Pioneer transports for fear that they would not work with the required i2s "flavor". Also, my research on whether or not a philips / marantz sacd player would have the compatible i2s format didn't turn up much useful information.
So, any recommendations on a cheap player that I could purchase? If not, then any recommendations on the compatible decoder / controllers chips that are known to work with the ecdesgins dacs natively?
Thanks!
New DI DAC modules
Hi luvdunhill,
I2S format is no longer an issue...
Designed some new modules for the DI DACs...
The new modules enable the DI DACs to accept USB, SPDIF (RCA) + TOSLINK, while providing exactly the same sound quality. This is made possible by 3 new modules:
1) Local reclocker (improved version with circulating bit pattern / no reset), rejects jitter of all input sources.
2) UTOS1 module, accepts both USB and TOSLINK / RCA. It provides full galvanic insulation between source and DAC (high-speed opto-couplers). This blocks source noise and prevents ground loops. It's based on PCM2706 and CS8412 / CS8414 (adapter socket). It has the same module size as the USBDI2S module.
3) UTOS2 module, same as UTOS1 but based on PCM2706 / CS8416.
Plug and play ......
The problem now is finding a digital sound source of YOUR flavour.
Hi luvdunhill,
I2S format is no longer an issue...
Designed some new modules for the DI DACs...
The new modules enable the DI DACs to accept USB, SPDIF (RCA) + TOSLINK, while providing exactly the same sound quality. This is made possible by 3 new modules:
1) Local reclocker (improved version with circulating bit pattern / no reset), rejects jitter of all input sources.
2) UTOS1 module, accepts both USB and TOSLINK / RCA. It provides full galvanic insulation between source and DAC (high-speed opto-couplers). This blocks source noise and prevents ground loops. It's based on PCM2706 and CS8412 / CS8414 (adapter socket). It has the same module size as the USBDI2S module.
3) UTOS2 module, same as UTOS1 but based on PCM2706 / CS8416.
Plug and play ......
The problem now is finding a digital sound source of YOUR flavour.
Attachments
Hi Bostjan,
OT: remember a certain envelope? It arrived only yesterday!
Ethernally grateful. 🙂
Hi Doede 🙂
Two main reasons:
First, as John stated, 16x has lower HF roll-off than 8x (the original DI is 8x, as you know).
Second, at least with DIY heatsinks, 16x would be even more difficult to accomplish!...due to space available.
I would prefer an 8 x 8 project
But first, and at the risk of being called stuborn, a power supply tweaking is mandatory, even just for the fact that having to many 78xx-like regulators inside hurts my DIYer pride
Cheers,
M
OT: remember a certain envelope? It arrived only yesterday!
Ethernally grateful. 🙂
Hi Doede 🙂
Two main reasons:
First, as John stated, 16x has lower HF roll-off than 8x (the original DI is 8x, as you know).
Second, at least with DIY heatsinks, 16x would be even more difficult to accomplish!...due to space available.
I would prefer an 8 x 8 project
But first, and at the risk of being called stuborn, a power supply tweaking is mandatory, even just for the fact that having to many 78xx-like regulators inside hurts my DIYer pride
Cheers,
M
maxlorenz said:
This was walking speed (2 months shipping)... I thought you already have it, before long ago.
I will stay in 8X4 position and add some tubes.. John said it makes quite big difference in sound (add sparkling, transparence and more natural).
regards, Bostjan
Re: New DI DAC modules
Great news 🙂
P.S. John, I sent you an email yesterday, from the address posted on the website: did you get it?
-ecdesigns- said:
Great news 🙂
P.S. John, I sent you an email yesterday, from the address posted on the website: did you get it?
Hi ecdesigns
Very interesting project !
Could you post the final schematics of di-16?
Due to bernard post and mine personal investigation pcm56(k,j)
is better than 1543 1541 ,while avalaiblty of these ic's is not a problem (10 pcm56u - 4 usd,10 pcm56p-k 8 usd ,thought 100 quantity of this ic's would be cheaper),there were no problem with
glitch.
Maybe it would be a problem to trace a board with 32 pcm chips
,but its damn cheap(pcm56u) and it would be freely avalaible the next years🙂
and of course pcm17(94,96,98)
due its low price and avalaibality(digital filter could be disabled).
Hm ad1865 is a good substitute(very easy to trace due to a very good ground placing of this ic,channels are nearly identical) ,but high price (30-35 usd n-j,n-k)
🙁
Is this posible to design a prototype of di dac with msb first out .
Pcm56 could be easily replaced by ad1851 or even ad1862.
But the most outstanding nos dac was wth pcm58p-k 😎
Very interesting project !
Could you post the final schematics of di-16?
Due to bernard post and mine personal investigation pcm56(k,j)
is better than 1543 1541 ,while avalaiblty of these ic's is not a problem (10 pcm56u - 4 usd,10 pcm56p-k 8 usd ,thought 100 quantity of this ic's would be cheaper),there were no problem with
glitch.
Maybe it would be a problem to trace a board with 32 pcm chips
,but its damn cheap(pcm56u) and it would be freely avalaible the next years🙂
and of course pcm17(94,96,98)
due its low price and avalaibality(digital filter could be disabled).
Hm ad1865 is a good substitute(very easy to trace due to a very good ground placing of this ic,channels are nearly identical) ,but high price (30-35 usd n-j,n-k)
🙁
Is this posible to design a prototype of di dac with msb first out .
Pcm56 could be easily replaced by ad1851 or even ad1862.
But the most outstanding nos dac was wth pcm58p-k 😎
kosmolesch said:
PCM56 SMD is a very good idea, saves lots of space in n x PCM56 parallel DACs
Any SMD test sockets for selecting available ?
Did you like PCM58 ?
I could not find any good chips even when adjusting all 4 bits.
I have PCM56 date code 2004, seems they are still in production while other 18bit and 20bit DACs are long obsolete.
Somebody must use them for good reason 😀
Hi,Bernard .
Which pcm58 have your tried , i'm tried pcm58p-k and i was satisfed, but it is depriviate from pcm64(pcm64 is depriviate from
old industrial 18 bit dac,which is very tolerant to suply and grounding ),so it would be hard to trace 16 biig dips on board i suggest 4 layers pcb (
Of course when using dac with more than 16 bits in nos,we must
fill last lsb with zeros(filling it with first lsb or msb wouldn't be a deal ).
I anticipate pcm61p as a candidate (
You were right about high dissortion f tda1541 in classical nos circuit,but there we no problems with pcm56 there 🙂
As fo soic 16 adapters for pcm56,I did them myself due it is not hard🙂
AD1851 AND PCM56 is still in production and is cheap so it's a good deal 🙂
The only problem is adopt them in di dac 🙁
I even vanted to use altera to place there basic di dividers with i2s to msb converters(i'm a very lazy person) 😀
but it is not a deal!🙂
Which pcm58 have your tried , i'm tried pcm58p-k and i was satisfed, but it is depriviate from pcm64(pcm64 is depriviate from
old industrial 18 bit dac,which is very tolerant to suply and grounding ),so it would be hard to trace 16 biig dips on board i suggest 4 layers pcb (
Of course when using dac with more than 16 bits in nos,we must
fill last lsb with zeros(filling it with first lsb or msb wouldn't be a deal ).
I anticipate pcm61p as a candidate (
You were right about high dissortion f tda1541 in classical nos circuit,but there we no problems with pcm56 there 🙂
As fo soic 16 adapters for pcm56,I did them myself due it is not hard🙂
AD1851 AND PCM56 is still in production and is cheap so it's a good deal 🙂
The only problem is adopt them in di dac 🙁
I even vanted to use altera to place there basic di dividers with i2s to msb converters(i'm a very lazy person) 😀
but it is not a deal!🙂
Happy new year for all the good friends here 🙂
I would try any good sounding and cheap DAC on the DI timing chain, provided there is a good PCB to solder them to 😉
A "modular" DI16 could be interesting
Best wishes,
M
I would try any good sounding and cheap DAC on the DI timing chain, provided there is a good PCB to solder them to 😉
A "modular" DI16 could be interesting
Best wishes,
M
-ecdesigns-
I know you're busy, but I was wondering if you (or anyone else) could comment if the following i2s format would be compatible directly with the DI dacs:
It's a 4-wire format as follows:
> Master Clock: 256 Fs
> Word Clcok: Fs
> Bit Clock: 64 Fs
> Data: two's complement, aligned on the 1st bit clock after the word clock edge
I know you'll have the new option ready, but I think I'd still like to try the i2s direct option and I'm still trying to compile a list of options.
Thanks!
I know you're busy, but I was wondering if you (or anyone else) could comment if the following i2s format would be compatible directly with the DI dacs:
It's a 4-wire format as follows:
> Master Clock: 256 Fs
> Word Clcok: Fs
> Bit Clock: 64 Fs
> Data: two's complement, aligned on the 1st bit clock after the word clock edge
I know you'll have the new option ready, but I think I'd still like to try the i2s direct option and I'm still trying to compile a list of options.
Thanks!
I like to I wish you all a happy new year 🙂
Hi luvdunhill,
Yes, it's compatible.
Do realize that I2S is no guarantee for low jitter.
Hi luvdunhill,
Yes, it's compatible.
Do realize that I2S is no guarantee for low jitter.