New TK2050 board - Page 69

sendler · 12:17 PM

Quote:

Originally Posted by Nick122147

Hi Scott, are you running direct out of DAC chip mod on this? which dac chip is it? I have a very similar red DAC board , and mine makes some strange noise when I haven't connected any digital input.
Is one DC supply enough when only running the DAC part of this board? What voltage?

That is the LM3-V10 "Big dac board".
.
http://cgi.ebay.com/HiEnd-24-192-DAC...44694891181043
.
I bought from snow without the transformer just to hear it. You can also buy the same board from Gigaworks. I had my daughter boards upgraded to DIR9001/ CS43122 and it is running direct out through caps, It already sounds better than the AK4395 I have been using even though there is a hiss from the dac chip and I can't use the excellent sounding upsampler board because it adds a whistling noise. It has great potential though so I am going to buy another board with the transformer and with all of the other optional daughter boards to play with until I find the best final solution. I am using 12vdc in for now. It is only powered on the low voltage side of the board since I am not using the opamps. Normal input voltage is labeled as 7 to 10vac and 13v to 15v -0- 13v to 15v. There is good support on the other thread if you want to continue the discussion there.
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Experience with this DIY DAC ?
.

TCx · 2nd September 2010, 04:01 PM

Hifimediy: Do current versions of TK2050 v.1.1B, v.2.0 and T3 (or its PS) include speaker protection against DC? Thanks.

hifimediy · 2nd September 2010, 04:05 PM

Quote:

Originally Posted by TCx

Hifimediy: Do current versions of TK2050 v.1.1B, v.2.0 and T3 (or its PS) include speaker protection against DC? Thanks.

Hi, v2 and T3(with PSU) have DC protection, v1 has only fault(both TC2000 and STA508) protection.

ptiJean · 2nd September 2010, 09:24 PM

Greetings,

Received my v2 kit with Meanwell 27.

Connected everything and started the thing.

All lights seem to be good :
- green on the Meanwell with 23.8 VDC measured.
- green and red lights on the v2 PCB.

I have music ! But only trebble, absolutely no bass, it misses half bandwidth.
Did I miss something ?

For the moment it's running on my second system with small JPW speakers and an old Philips CD player.
All of this is usually working fine with an aura va100 amp, everything worked ok this morning.

Do you have an idea ?
Thank you ! cause I'm close to the end

kickngas · 3rd September 2010, 01:21 AM

Speaker polarity correct?

hifimediy · 3rd September 2010, 02:44 AM

Some times a faulty connection of input signal will lead to similar problem.

ptiJean · 07:20 AM

Speaker polarity correct yes.
I have veryfied all the inputs from CD player to board : ok.

Here is an overview on the v2 PCB : do you see anything wrong ?

And then re-connected speaker + RCA cables to my old amp : everything's working fine

hifimediy · 3rd September 2010, 07:57 AM

Hi, the photo do not show up, could you post again?

ptiJean · 3rd September 2010, 08:14 AM

Quote:

Originally Posted by hifimediy

Hi, the photo do not show up, could you post again?

Here is again :

I also put it in an attached file here.
Regards,

teamacc · 3rd September 2010, 08:16 AM

I see you twisted the potmeter... Does not seem healthy for the board to me..

3rd September 2010, 01:21 AM	#685
kickngas diyAudio Member Join Date: Jul 2009 Location: Wilmington, NC	Speaker polarity correct? __________________ http://thsev.blogspot.com/

3rd September 2010, 07:05 AM	#687
ptiJean diyAudio Member Join Date: Jul 2006	Speaker polarity correct yes. I have veryfied all the inputs from CD player to board : ok. Here is an overview on the v2 PCB : do you see anything wrong ? And then re-connected speaker + RCA cables to my old amp : everything's working fine Last edited by ptiJean; 3rd September 2010 at 07:20 AM.

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2nd September 2010, 04:01 PM	#682
TCx diyAudio Member Join Date: Apr 2010	Hifimediy: Do current versions of TK2050 v.1.1B, v.2.0 and T3 (or its PS) include speaker protection against DC? Thanks.

2nd September 2010, 09:24 PM	#684
ptiJean diyAudio Member Join Date: Jul 2006	Greetings, Received my v2 kit with Meanwell 27. Connected everything and started the thing. All lights seem to be good : - green on the Meanwell with 23.8 VDC measured. - green and red lights on the v2 PCB. I have music ! But only trebble, absolutely no bass, it misses half bandwidth. Did I miss something ? For the moment it's running on my second system with small JPW speakers and an old Philips CD player. All of this is usually working fine with an aura va100 amp, everything worked ok this morning. Do you have an idea ? Thank you ! cause I'm close to the end

3rd September 2010, 02:44 AM	#686
hifimediy diyAudio Member Join Date: Oct 2009	Some times a faulty connection of input signal will lead to similar problem.

3rd September 2010, 07:57 AM	#688
hifimediy diyAudio Member Join Date: Oct 2009	Hi, the photo do not show up, could you post again?

3rd September 2010, 08:16 AM	#690
teamacc diyAudio Member Join Date: Jan 2010	I see you twisted the potmeter... Does not seem healthy for the board to me..

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