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Old 19th September 2013, 06:36 AM   #1131
noizas is offline noizas  Lithuania
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Quote:
Originally Posted by jcastellano View Post

The Metronome is config as 48khz as I do not know for sure the limits of the RED BARON in terms of sampling rate and bit depth. I will try 96khz soon and will report back.

Regards,

Jorge
Hi Jorge

Red Baron is limited by TDA1541.
It is 16 bit resolution, maximum 200kHz sampling rate in all modes (simultaneous or time multiplexed) by it's datasheet.

However Ian has tested it in simultaneous mode at 352,8kHz with his "Universal I2S-PCM driver board" (look into thread "Drive NOS AD1865/62,PCM1704/02/63,TDA1541 from FIFO: Universal I2S-PCM driver board").

So you should be successful at 96kHz/16 bit in I2S mode.


Regards

Saulius
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Old 19th September 2013, 11:35 PM   #1132
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Quote:
Originally Posted by jcastellano View Post
Another doubt I have is: Does the Red Baron Dac support 24 bits 96 KHz.? I made the error not check the config of the Musiland and it was set at 24/96... But if the receiver locks with the signal, it is wonderful....

More to come....

Regards,

Jorge
It can not support 24 bits because the TDA1541A is a 16 bit chip. No problems with the sampling rate though, it can be has high as 352.8 KHz (Not sure if this is only when using simultaneous mode), the fs equivalent to 8x Oversampling. The problems I found with increasing sampling frequency is that THD also goes up when using 96KHz and up, probably caused by the lack of filter in the output. I only tested this with the ARTA, have not listened to music with such high sampling rates, so I can not say anything about that.

Last edited by Wargreymon; 19th September 2013 at 11:39 PM.
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Old 20th September 2013, 12:29 PM   #1133
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any comments from Oliver would be very appreciated on how to connect TPA and RB dac and eliminate that hissing sound?
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Old 20th September 2013, 06:47 PM   #1134
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Default How do you buy these PCB's?

I would like to obtain some of these PCB's. The power supply boards can be used
on other projects. The same is true for the regular PCB's. Let me know how and where to buy some of these great PCB's.
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Old 20th September 2013, 09:12 PM   #1135
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Quote:
Originally Posted by dtses View Post
any comments from Oliver would be very appreciated on how to connect TPA and RB dac and eliminate that hissing sound?
Hi dtses,

with the Red Baron V3.0 & V4.0 (without modifications) you need the UHS-Buffer in between.

If you did make the 3.3V I2S mod., i would say that you could omit the UHS-Bufer module. Unfortunately i couldt test this, because i had sold my TPA.

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Old 20th September 2013, 09:13 PM   #1136
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Quote:
Originally Posted by mrsavage View Post
I would like to obtain some of these PCB's. The power supply boards can be used
on other projects. The same is true for the regular PCB's. Let me know how and where to buy some of these great PCB's.
Hi mrsavage,

if you would like to order something, i need a PM with your paypal address for the invoice.

Best,
Oliver
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Old 21st September 2013, 08:43 AM   #1137
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Quote:
Originally Posted by dvb projekt View Post
If you did make the 3.3V I2S mod., i would say that you could omit the UHS-Bufer module. Unfortunately i couldt test this, because i had sold my TPA.

hi Oliver,

yes, the i2s mod is done.
Could you please give any hint about the board or some further tests? Do I have a correct signal on BCK output?
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Old 28th September 2013, 10:53 PM   #1138
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some photos...

Click the image to open in full size.

Click the image to open in full size.

not sure how I'm going to lay it out, or use the hammond case or use the Amanero.
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Old 8th October 2013, 02:51 PM   #1139
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So, even though I bought a matched set of transistors for the shunt regulators they aren't needed?

I'm going to pop them in now.
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Old 9th October 2013, 07:19 AM   #1140
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Quote:
Originally Posted by noizas View Post
Hi Jorge

Red Baron is limited by TDA1541.
It is 16 bit resolution, maximum 200kHz sampling rate in all modes (simultaneous or time multiplexed) by it's datasheet.
However Ian has tested it in simultaneous mode at 352,8kHz
Saulius
TDA1541A sheet:
Quote:
The high maximum input bit-rate and fast setting facilitates application in 8 x oversampling systems (44.1 kHz to 352.8 kHz or 48 kHz to 384 kHz) with the associated simple analog filtering function (low order, linear phase
filter).
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