Build thread for ES9023 + JG Buffer boards (betatest) - Page 28 - diyAudio
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Old 20th March 2014, 10:13 AM   #271
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Quote:
Originally Posted by JLOP View Post
Hi Daniel,

In case I need several in // to run after a DSP and digital XO (Najda), are there specific instructions about clocking ?

BR
Jean-Louis
Basically you have three options:
1st: run each DAC from the DSPs MCLK. In this case you have to check the drive capability of the MCLK line of the DSP board since you will parallel several DACs (maybe a clock buffer is a good idea if not already implemented). You have to disable the local XO on the DACs (remove a ferrite bead in the corresponding local LDO reg) and add a 0603 jumper to enable external clocking.

2nd: run each DAC asynchronous from the DSP off of it's local MCLK (ESS DACs feature an asynchronous reclocking).

3rd: run the DACs synchronous from one clock but asynchronous from the DSP. This seems only feasible if using two stereo DACs and would require a bit more rework if using more than two DACs.

With the miniSHARC I am using option 2 with good results.

@all: just want to mention that the GB for curryman DACs has just been started

cheers, Daniel
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Old 28th March 2014, 11:36 PM   #272
00940 is online now 00940  Belgium
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Join Date: Sep 2003
Location: Liège
Just finished one A very straightforward build, without any problem. A big thank to Daniel for designing that board and making it available. And another thank to Mullet who suggested me this DAC.

It sounds really good. The built was for a friend (he pays the parts, I play with them), so it'll go away soon but I could certainly live happily ever after with it.

The supporting parts are rather straightforward, the total cost was somewhere around 220€ iirc, shipping included:

- Power supply is based on C-L-C filters (470uF-10mH/14r dcr-1000uF) followed by lm317-337.
- USB input is provided by the CM6631A board from diynhk, which has isolated I2S outputs. Getting the driver to install was however a bit of a pain, no automatic setup would work (on vista business).
- Case is a galaxy gx247, rca are from Neutrik. I tried to make the build a bit cleaner than my usual wire nests.

Btw, DC offset is 2 and 3mV, which is quite ok. It's a pcb bought on audiophonics last week, from the new minidsp batch.

I attach a bad phone pic with bad lightning to illustrate the description. I'll try to make better pics at daylight.
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Old 29th March 2014, 03:17 PM   #273
00940 is online now 00940  Belgium
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Originally Posted by 00940 View Post
I attach a bad phone pic with bad lightning to illustrate the description. I'll try to make better pics at daylight.
I said I'd try... my phone's camera is really awful though.
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File Type: jpg back1.jpg (53.5 KB, 644 views)
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Old 4th April 2014, 10:09 AM   #274
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Nice build
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Old 11th April 2014, 07:10 PM   #275
kinku is offline kinku  United States
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Location: Maryland,USA
Daniel what is your recommendation for usb I2S interface for Curryman DAC? I am planning to use squeezebox touch as transporter.Looking for asynchronous USB playing back 24bit upto 192khz sampling. Thanks
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Old 14th April 2014, 03:49 PM   #276
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I am using the Amanero USB to I2S together with an isolator and it works really good.
However can you use USB interfaces with Squeezebox touch? Isn't it SPDIF out? In the latter case I'd use the Twisted Pear SPDIF Transeiver

cheers, Daniel
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Old 14th April 2014, 05:31 PM   #277
kinku is offline kinku  United States
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Squeezebox can be made to work with USB devices with an EDO mode from triode. It is working fine with my HRT streamer PRO in async mode
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Old 11th June 2014, 02:09 AM   #278
Peterma is offline Peterma  Australia
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Location: Sydney
I just setup this dac with cm6631a usb I2s and it sounds nice smooth bass and treble, spacious sound the only thing is the soundstage imaging I find the centre is pushed back a bit which makes the singer a little less dominant making the instruments more upfront.
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Old 31st August 2015, 04:09 PM   #279
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Location: Cologne
Default Curryman DAC with Ians FIFO board plus reclocking

14 month no post....

would like to use the Curryman DAC in combination with Ians Fifo and reclockerboard. In this cast I think asyncronous does not make sense, does it?

In case of is proposal 1 in post #271 the way to go?

Cheers Ernst
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Old 1st September 2015, 11:26 AM   #280
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Hi Ernst,
Yes, synchronous is the way to go in this case.
Therefore you can disable the on board clock oscillator of the curryman DAC and feed the clock from Ians reclocker MCLK out as suggested in post #271.
The following steps are necessary:
1. Remove L31 in order to unpower the onboard oscillator
2. Add a jumper (solder bridge or 0 ohms resistor 0603) at J2 position. This will connect the MCLK header to the DACs clock input
Ideally you can add the U.Fl headers to the DAC in order to use the coax connections.
Kind of ES9023 on steroids ;-) Looking forward to hearing your report J
Kind regards, Daniel
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