D1 I/V with TDA 1541A

smario · 19th June 2006, 07:05 AM

Hello !

I'd like to put D1 I/V stage on DAC with TDA 1541. I've read somewhere that this could be done. Could somebody post (or send me) a schematic of I/V stage and how to connect it to TDA 1541? Any listening impressions?

Thanks in advance !

santi · 19th June 2006, 10:15 AM

Hi smario
You can connect D1 to TDA1541A without any problem. Don't forgot to remove TDA1541A's R I/V.

The sound was very nice (for my ears).

smario · 19th June 2006, 10:28 AM

Coud you post or mail me schematic od D1 and how it is connected to TDA1541?

I made http://www.diyaudio.com/forums/attac...amp=1108695002

Is it ok to connect Ina(b) directy to Aol (Aor) on TDA1541A ? I trimmed Ina to 0 V and after connection to Aol nothing happened.

santi · 19th June 2006, 10:58 AM

I used the same schematic as you.

Quote:

Is it ok to connect Ina(b) directy to Aol (Aor) on TDA1541A ? I trimmed Ina to 0 V and after connection to Aol nothing happened.

Yes, It's OK.

Does your TDA1541A work OK without D1 I/V?

smario · 19th June 2006, 11:02 AM

Quote:

Does your TDA1541A work OK without D1 I/V?

How could I check, if it works ok without I/V? All voltages (+5V,-5V,-15V) are ok.

santi · 19th June 2006, 11:14 AM

Use R I/V, 47-150 Ohms connect AOL, AOR to ground then connect AOL, AOR to your amp. The signal was very low, just turn your volumn more than usual.

smario · 19th June 2006, 11:31 AM

I'll try this resistors as soon as I come home and report the results next morning.

Thanks !

smario · 19th June 2006, 06:54 PM

I put 82 ohm resistors and connected the amp. The result is nothing. Input reciever is locked on signal from the cd-transport but nothing is out from the dac. I'll have to dismantle the entire dac and check it.

Does anybody have have any idea what could be wrong?

poolorpond · 19th June 2006, 11:46 PM

Did you read the data sheet to determine the correct I/V resistor? I think the 1543 uses 1k. If the chips are similar, 82r would be a little low and might not make enough voltage. You also might have to set the current on the dac with another resistor to Aground. Sorry if this is not helpful, I don't have the data sheet in front of me.

santi · 20th June 2006, 03:32 AM

smario
Does you have "reclock circuit" between digital receiver and dac?
If yes, try to bypass the reclock.

19th June 2006, 07:05 AM	#1
smario diyAudio Member Join Date: Jul 2005 Location: Zagreb	D1 I/V with TDA 1541A Hello ! I'd like to put D1 I/V stage on DAC with TDA 1541. I've read somewhere that this could be done. Could somebody post (or send me) a schematic of I/V stage and how to connect it to TDA 1541? Any listening impressions? Thanks in advance !

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19th June 2006, 10:15 AM	#2
santi diyAudio Member Join Date: Nov 2004 Location: Bangkok	Hi smario You can connect D1 to TDA1541A without any problem. Don't forgot to remove TDA1541A's R I/V. The sound was very nice (for my ears).

19th June 2006, 10:28 AM	#3
smario diyAudio Member Join Date: Jul 2005 Location: Zagreb	Coud you post or mail me schematic od D1 and how it is connected to TDA1541? I made http://www.diyaudio.com/forums/attac...amp=1108695002 Is it ok to connect Ina(b) directy to Aol (Aor) on TDA1541A ? I trimmed Ina to 0 V and after connection to Aol nothing happened.

19th June 2006, 11:14 AM	#6
santi diyAudio Member Join Date: Nov 2004 Location: Bangkok	Use R I/V, 47-150 Ohms connect AOL, AOR to ground then connect AOL, AOR to your amp. The signal was very low, just turn your volumn more than usual.

19th June 2006, 11:31 AM	#7
smario diyAudio Member Join Date: Jul 2005 Location: Zagreb	I'll try this resistors as soon as I come home and report the results next morning. Thanks !

19th June 2006, 06:54 PM	#8
smario diyAudio Member Join Date: Jul 2005 Location: Zagreb	I put 82 ohm resistors and connected the amp. The result is nothing. Input reciever is locked on signal from the cd-transport but nothing is out from the dac. I'll have to dismantle the entire dac and check it. Does anybody have have any idea what could be wrong?

19th June 2006, 11:46 PM	#9
poolorpond diyAudio Member Join Date: Aug 2005	Did you read the data sheet to determine the correct I/V resistor? I think the 1543 uses 1k. If the chips are similar, 82r would be a little low and might not make enough voltage. You also might have to set the current on the dac with another resistor to Aground. Sorry if this is not helpful, I don't have the data sheet in front of me.

20th June 2006, 03:32 AM	#10
santi diyAudio Member Join Date: Nov 2004 Location: Bangkok	smario Does you have "reclock circuit" between digital receiver and dac? If yes, try to bypass the reclock.

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