Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Digital Line Level DACs, Digital Crossovers, Equalizers, etc.

Drive NOS AD1865/62,PCM1704/02/63,TDA1541 from FIFO: Universal I2S-PCM driver board
Drive NOS AD1865/62,PCM1704/02/63,TDA1541 from FIFO: Universal I2S-PCM driver board
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
Reply
 
Thread Tools Search this Thread
Old 13th July 2017, 09:02 PM   #901
iancanada is offline iancanada  Canada
diyAudio Member
 
iancanada's Avatar
 
Join Date: Dec 2009
Location: Toronto
Drive NOS AD1865/62,PCM1704/02/63,TDA1541 from FIFO: Universal I2S-PCM driver board
Quote:
Originally Posted by Cheng View Post
Hi all,

Manage to get the AD1865 & PCM1702s Dac board to sing with following setup. Can't figure out why it doesn't with the Kali setup. (May try again to confirm)

Rpi>Ian Fifo>Ian Isolator Board>Ian Dual Clock Board>Ian PCM Board >Dac Board>Opamp IV

The reason I got into this project is because I wanted to try old NOS R2R Dacs in simultaneous mode before its all gone in the future And I hope to replace my old cd player (marantz cd63) with HD/Rpi, as the it is so much more convenient.

So far I find both Ad1865 & PCM1702s Dacs set up to sound smooth and detail especially in vocal. My marantz is also very detail and musical, but the sound is abit "on your face", just like other DS dac that I have heard. Next on the test bench will be trying out on different IV output.

Again I would like to thanks Ian for all the nice digital interface boards. It really makes integrating with nos dac so much easier

Cheng
Thans Cheng, you are very welcome.

I like you project, integrated very well. You are professional DIYer .

Can you post something about your I/V, I'm interested in following your design for my AD1865 PCB.

Regards,
Ian
  Reply With Quote
Old 6th December 2017, 07:48 PM   #902
maessen is offline maessen  Netherlands
diyAudio Member
 
Join Date: Dec 2009
I am interested to know if it is worthwhile to make the TDA1541a USB dac.

What does it sound like?

I have the plan to make an USB input on my CD94 MKII
Better build this of make an ES9038pro board?

Anyone listened to it here?
  Reply With Quote
Old 6th December 2017, 08:37 PM   #903
supra is offline supra  Australia
diyAudio Member
 
Join Date: Jul 2004
Location: Margaret River West Australia
It sounds awesome, as good as anything ive heard. Except for raspberry direct I2S, non usb, which sounds even better with 1541.
The Ian stuff is better than excellent, its still years ahead of time.
  Reply With Quote
Old 6th December 2017, 08:41 PM   #904
maessen is offline maessen  Netherlands
diyAudio Member
 
Join Date: Dec 2009
Yes I thought so already. I love the TDA1541A.
Being able to play high sample rate FLAC on it seems unbelievable.
Must be a Dutch thing.

Insane that the first made 16bit DAC chip is still the best.

What should I use for power supplies?

Johan

Last edited by maessen; 6th December 2017 at 08:44 PM.
  Reply With Quote
Old 6th December 2017, 08:51 PM   #905
supra is offline supra  Australia
diyAudio Member
 
Join Date: Jul 2004
Location: Margaret River West Australia
Quote:
Originally Posted by maessen View Post
Yes I thought so already. I love the TDA1541A.
Being able to play high sample rate FLAC on it seems unbelievable.
Must be a Dutch thing.

Insane that the first made 16bit DAC chip is still the best.

What should I use for power supplies?

Johan
I used AYA2 dac with its own power supplies .
  Reply With Quote
Old 7th December 2017, 10:37 AM   #906
maessen is offline maessen  Netherlands
diyAudio Member
 
Join Date: Dec 2009
Can anyone tell me what more I need to order with the board to implement it in my CD-94 mkii(dual TDA1541a)

I need connectors/ cables/ and maybe other stuff?
Ian supplies also some of this.

Clock and other stuff I will do after this USB streaming project.
  Reply With Quote
Old 7th December 2017, 01:26 PM   #907
Henderson is offline Henderson
Banned
 
Join Date: Jul 2017
Quote:
Originally Posted by supra View Post
It sounds awesome, as good as anything ive heard. Except for raspberry direct I2S, non usb, which sounds even better with 1541.
The Ian stuff is better than excellent, its still years ahead of time.


I have exactly the opposite experience ! With all the Ian's devices : a Wave I/O USB to I2S was far better than the Rpi with the I2S uf-l adaptator board before all the complete list of devices : fifo, isolator, clock, Crystek xtrals, PCM board the dac trough uf-l wires.


Whatever the sota PS feeding the Rpi or the Wave I/O ! Despite the FIFO, difference befor can be heard and the Wave I/O just gave better results VS the Rpi. Tested all the possible power supply : best integrated chips as LiPoFe4 A123 cells !


Test made with very musical TDA 1541A DAC from Audial. Where I agree : it's the best musical stuff I ever heard and had ! Far better than ES9018 and PCM 1792 dacs !


Ian's gears are excellent but even better results ask special setups on the supplies and first source ( I use short USB cable and non Noisy Synology NAS with Linux Audio streamer and yes it is important and can be listened to despite the fifo & reclock).


Imho, despite all the cares : if the Rpi stays the Master, even a Fifo and reclock don't supress totally its default : at least my ears and some of my musicians buddies agree with that conclusion. Devil is in the details as usual. Jitter is not all. A good USB to I2S sounds better than a RpI as a source !


If I had a wish : a sota board designed by Ian : USB inputs with the last USB chips of Silicon Labs, short fifo integrated on the same board la Kali to avoid the long uf-l cable and all the mess with that; and an embeded reclock with still the dip14 socket to choose the xtal; uf-l plugs inputs and outputs already soldered = great futur commercial and SQ sucesses...

Last edited by Henderson; 7th December 2017 at 01:33 PM.
  Reply With Quote
Old 7th December 2017, 01:45 PM   #908
maessen is offline maessen  Netherlands
diyAudio Member
 
Join Date: Dec 2009
With Ian's board it it possible to run two TDA1541 in Dual Mono configuration.

I have a Marantz CD94 with two TDA 1541 in Dual Stereo fed in a differential amplfier. This has the advantage of eliminating harmonica and clock in the output.

Is there any benefit in running dual mono over the CD94 configuration?
  Reply With Quote
Old 7th December 2017, 08:10 PM   #909
maessen is offline maessen  Netherlands
diyAudio Member
 
Join Date: Dec 2009
I just realized.
When I build the board in to my cd94 mkII I cannot play a cd anymore.
I have 2 I2S sources:
1 USB
2 CD Receiver

Are there any solutions to this?
  Reply With Quote
Old 7th January 2018, 05:27 AM   #910
ryanj is offline ryanj  Australia
EE Hack
diyAudio Member
 
ryanj's Avatar
 
Join Date: Jul 2010
Location: Seaford
Drive NOS AD1865/62,PCM1704/02/63,TDA1541 from FIFO: Universal I2S-PCM driver board
Hi Ian,

Regarding your Isolator PCB - V1.0

The PCB is designed to take a IL715, but I dont want my clock on the FIFO side with the added jitter contribution of the Isolator chip going to the I2S to PCM PCB where it is re-clocked (with the 100ps added jitter of the Isolator chip).

What I was thinking was - Instead use the IL717, which has one Isolation channel that goes in the opposite direction to the other three channels (IN, IN, IN, OUT -> OUT, OUT, OUT, IN). That way I can have the clock on the I2S to PCM pcb side and send the clock signal back through the Isolator chip to the FIFO, thus directly clocking the I2S to PCM pcb from the clock without the added 100ps jitter from the Isolator chip.

Are there any issues in doing this with your PCB?

Thanks.

Ryan.
  Reply With Quote

Reply


Drive NOS AD1865/62,PCM1704/02/63,TDA1541 from FIFO: Universal I2S-PCM driver boardHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Ian asynchronous I2S and S/PDIF FIFO KIT group buy iancanada Group Buys 2595 4th May 2018 04:20 PM
FS: Paralleled TDA1541 NOS/OS DAC Board pftrvlr Swap Meet 6 17th April 2011 09:39 PM
AD1865 vs PCM1704 steve jones Digital Source 30 28th December 2008 03:04 PM
Simple FIFO to I2S CPLD, for MCU players / reclocking KOON3876 Digital Line Level 21 19th September 2008 04:00 PM
Urgent sale a lot of NOS (produced in 1996) PCM 63 "K" grade! Altmustech Parts 0 26th August 2006 11:41 AM


New To Site? Need Help?

All times are GMT. The time now is 01:43 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki