Same problem here
Hi,
I am having the same issue with the twisted pear audio receiver. Sound but with hiss and distorted... I have checked the voltages and looks fine. I think that the problem could be the 24 bit output of this receiver? So I would like some advise for this problem and if somebody could point me to a spdif receiver compatible with the 4.0 Red Baron Dac. The dac I suppose is working ok due to,it was a working one from Oliver who sold it on offer to me so...
Regards,
Jorge
Yesterday I fired it up finally for the 1st time
Wow... I even got some music at the output
Bad point is that there is so much noise/ hiss/ digital distortion (?!) and it's very loud!
Checked all the power supply, the voltages are correct.
The settings on spdif transceiver are soldered as on the pics 2,3,4 (tried setting AIF/CONF0 to "-" but that didn't change anything, same noise).
I2S is connected in the following way:
BCK -> BCK
LRCK -> FS
DOUT -> Data
GND -> I2S GND
should be correct I suppose?!
Tried with a scope:
-square wave on spdif output of toslink converter
-BCK & LRCK showed square wave as well
-DOUT showed something weird (should it be square wave as well here?)
Would appreciate any advice!
Hi,
I am having the same issue with the twisted pear audio receiver. Sound but with hiss and distorted... I have checked the voltages and looks fine. I think that the problem could be the 24 bit output of this receiver? So I would like some advise for this problem and if somebody could point me to a spdif receiver compatible with the 4.0 Red Baron Dac. The dac I suppose is working ok due to,it was a working one from Oliver who sold it on offer to me so...
Regards,
Jorge
Twisted Pear SPDIF to I2S module with Red Baron
Hi Jorge,
with the Twisted Pear SPDIF to I2S converter you must do the 3.3V I2S mod., or insert the UHS-Buffer module in bewteen.
I would recommend to do the 3.3V mod!
Cheers,
Oliver
Hi Jorge,
with the Twisted Pear SPDIF to I2S converter you must do the 3.3V I2S mod., or insert the UHS-Buffer module in bewteen.
I would recommend to do the 3.3V mod!
Cheers,
Oliver
It is already done...by you...
Hi Oliver,
Glad to hear you...
My Red Baron 4.0 is one I bought from you with the 3.3V mod already done. Don't you remember? It should be working fine as it... I do not know what is going on and I need a BNC SPDIF input because I do not use USB audio. If I can not have a solution, could you sell me a UHS module?
Regards,
Jorge
Hi Jorge,
with the Twisted Pear SPDIF to I2S converter you must do the 3.3V I2S mod., or insert the UHS-Buffer module in bewteen.
I would recommend to do the 3.3V mod!
Cheers,
Oliver
Hi Oliver,
Glad to hear you...
My Red Baron 4.0 is one I bought from you with the 3.3V mod already done. Don't you remember? It should be working fine as it... I do not know what is going on and I need a BNC SPDIF input because I do not use USB audio. If I can not have a solution, could you sell me a UHS module?
Regards,
Jorge
Yes...perfect & stable 3.3v
Yes, I did...
Also in a previous purchase, I bought from you the power supply's and the salas shunt modules. I modified as you told me, the +5V to 3.3V and the modified salas shunt module works perfectly and stable at 3.3V.
The TP module is powered from the +5V line. In its manual states a power supply from 5 to 7.5, the later preferred. Could be this the problem?
Regards,
Jorge
Ahh sure...
Did you power the Digital in with 3.3V ?
Yes, I did...
Also in a previous purchase, I bought from you the power supply's and the salas shunt modules. I modified as you told me, the +5V to 3.3V and the modified salas shunt module works perfectly and stable at 3.3V.
The TP module is powered from the +5V line. In its manual states a power supply from 5 to 7.5, the later preferred. Could be this the problem?
Regards,
Jorge
More info and more confused....
Hi friends,
A little update. I have managed to install another receiver, the TP 4x1, CS8416 based. Last night did not lock to the spdif signal, it was 4 am and I went to bed. This evening, I retried it without any cable connected at it's outputs and voila... Lock led lit... I then reconnected the outputs while the dac was on, and I am hearing this awesome kit singing...
BUT......THERE IS ANOTHER ISSUE NOW...
If I shutdown the dac and then reconnect it ( as everybody normally do....) the receiver DOES NOT LOCK... I have to shut it down, disconnect the outputs, turn on dac and reconnect them after locking led lit....
Any ideas? I am in the process of opening the window and imagine next....
Regards,
Jorge
Hi friends,
A little update. I have managed to install another receiver, the TP 4x1, CS8416 based. Last night did not lock to the spdif signal, it was 4 am and I went to bed. This evening, I retried it without any cable connected at it's outputs and voila... Lock led lit... I then reconnected the outputs while the dac was on, and I am hearing this awesome kit singing...
BUT......THERE IS ANOTHER ISSUE NOW...
If I shutdown the dac and then reconnect it ( as everybody normally do....
) the receiver DOES NOT LOCK... I have to shut it down, disconnect the outputs, turn on dac and reconnect them after locking led lit....Any ideas? I am in the process of opening the window and imagine next....
Regards,
Jorge
Another clue.....
Hi friends,
I have made this morning another try...
If I start the DAC before the source, the receiver locks on the spdif signal.... As I said before it sounds (when it does...) fantastic!!!!!
But if I start it AFTER the source, nothing....! No signal lock...
I am using for testing purposes, my computer with an USB to coax Musiland Monitor 01 2013 version. Also I have tested a M2tech Hiface version 1. With both digital interfaces the problems arise, with the WM8804 distorted sound and with the CS8416 locking problems as I have explained before.
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
Hi friends,
I have made this morning another try...
If I start the DAC before the source, the receiver locks on the spdif signal.... As I said before it sounds (when it does...) fantastic!!!!!
But if I start it AFTER the source, nothing....! No signal lock...
I am using for testing purposes, my computer with an USB to coax Musiland Monitor 01 2013 version. Also I have tested a M2tech Hiface version 1. With both digital interfaces the problems arise, with the WM8804 distorted sound and with the CS8416 locking problems as I have explained before.
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
hi guys!
made another few test and think I found the problem, it's spdif transceiver!
I forgot I have the Amanero board that I've just connected and the DAC started to sound properly! Then I checked the toslink converter I use before TPA's board and it's working fine as well with another DAC.
I've tried to start the dac first then the source, but was unlucky again unlike jcastellano.
Could there be some issue with the three position switch that I substituted with wires here?! though it looks fine I assume...
I've connected the scope to BCK pin and here is what I got.
Also I double checked all the joins on TPA board and it looks to be fine...
made another few test and think I found the problem, it's spdif transceiver!
I forgot I have the Amanero board that I've just connected and the DAC started to sound properly! Then I checked the toslink converter I use before TPA's board and it's working fine as well with another DAC.
I've tried to start the dac first then the source, but was unlucky again unlike jcastellano.
Could there be some issue with the three position switch that I substituted with wires here?! though it looks fine I assume...
I've connected the scope to BCK pin and here is what I got.
Also I double checked all the joins on TPA board and it looks to be fine...
Attachments
Solved but no idea how....
Hi friends,
I have managed to make it work.... Let me, in my modest English, explain...
I had a (another) TP module lying around... The Metronome. So I gave it a chance, just for try. I hook it with the WM8804 ( the one that made the hiss and noise with the music in the background ) and between the Red Baron and it works!! It is like an interface between both modules. I am already hearing it trough a headphones and a O2 amp, due to I have to make the enclosure for the transformers and the umbilical cable between dac and transformers. I have made several tests, cutting off the AC to the dac while music playing and no probs after switching back on, etc. Dead silent, no noise whatsoever, just music.
So in summary:
WM8804---->RED BARON= NOISE, POPS AND MUSIC IN THE BACKGROUND
CS8416------>RED BARON= RAMDOM SPDIF SIGNAL LOCKS
WM8804---->SRC4192----->RED BARON=PERFECT SOUND
Please, take this as an info, do not take it as a rule of thumb, it is my experience and my environment, maybe yours is different. In my case works BUT I DO NOT KNOW WHY IT DOES.....
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 friends,
I have managed to make it work.... Let me, in my modest English, explain...
I had a (another)
TP module lying around... The Metronome. So I gave it a chance, just for try. I hook it with the WM8804 ( the one that made the hiss and noise with the music in the background ) and between the Red Baron and it works!! It is like an interface between both modules. I am already hearing it trough a headphones and a O2 amp, due to I have to make the enclosure for the transformers and the umbilical cable between dac and transformers. I have made several tests, cutting off the AC to the dac while music playing and no probs after switching back on, etc. Dead silent, no noise whatsoever, just music.So in summary:
WM8804---->RED BARON= NOISE, POPS AND MUSIC IN THE BACKGROUND
CS8416------>RED BARON= RAMDOM SPDIF SIGNAL LOCKS
WM8804---->SRC4192----->RED BARON=PERFECT SOUND
Please, take this as an info, do not take it as a rule of thumb, it is my experience and my environment, maybe yours is different. In my case works BUT I DO NOT KNOW WHY IT DOES.....
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
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
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.
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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?
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 could´t test this, because i had sold my TPA.
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
If you did make the 3.3V I2S mod., i would say that you could omit the UHS-Bufer module. Unfortunately i could´t 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?
some photos...
not sure how I'm going to lay it out, or use the hammond case or use the Amanero.
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.
not sure how I'm going to lay it out, or use the hammond case or use the Amanero.
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