UCD180 questions - Page 16

paradigm · 19th August 2004, 07:18 PM

Hi Jan-Peter!

I didn't quite understand what you mean. But as long as I use only balanced inputs, it doesn't matter, right!?

Could you please make a drawing, showing the schematic on:
"solder the -input line to ground/screen at the source side and NOT at the side of the amplifier connector."

/Roland

Sheriff · 19th August 2004, 07:21 PM

Those caps are indeed very good, (and very expensive). Nice to see that you are giving the UcD180 modules the power supply they deserve.......

I was a father for the third time last night - and i still look at the forum today....

Oh, if only i had a life

Best Regards

Sheriff

Jan-Peter · 19th August 2004, 07:28 PM

Roland,

Indeed with a symmetrical input everything is ok!

But supose you would use an asymetrical input so must put one wire to ground. Normaly to keep everything in phase you put the -input to ground. The question is at which place do you put this to ground? The best would be at the side where the source is. So you will pick up the signal at the side of the source.

Regards,

Jan-Peter

www.hypex.nl

Sheriff · 19th August 2004, 07:32 PM

Hi Jan - Peter,

Nice to see you hard at it, at this time in the evening. At the rate you are going, you will have paid for that new building of yours before you have even moved into it.....!

All the best

Sheriff

paradigm · 19th August 2004, 07:35 PM

Like this you mean?

/Roland

paradigm · 19th August 2004, 07:40 PM

...And then of course only use the 2+ line and ground on the main in side.

/Roland

Jan-Peter · 19th August 2004, 07:41 PM

Sheriff,

...hm ok I am working late. But who is here on the forum and get a new born Child

Congratulations to your new born Child!

Roland,

Indeed this is completly right! Now you take your signal still "slightly symmetrical", because the small signal voltage what is on the screen does not go to the input.

Jan-Peter

paradigm · 19th August 2004, 07:47 PM

Thanks for the info! It's good to know, should I, or anyone else need to go unbalanced.

/Roland

Bruno Putzeys · 19th August 2004, 07:49 PM

Quote:

Originally posted by paradigm
Like this you mean?

/Roland

Hang on... your drawing depicts a preamp with a balanced output! In that case you just connect "normally" ie pin2:+input, pin3:-input, pin1:shield. Depending on the output stage of the preamp, shorting one of the signal lines to pin1 is not always a good idea...

The connection whereby the shield and - wire are tied together at the source is used when the source has an RCA output connector. In that case shield and - connection at the preamp output are indeed both ground.

Jan-Peter · 19th August 2004, 08:07 PM

...Bruno, you had a better eye as I

Ofcourse the best is a symmetrical output and it would be VERY stupid to connect it in an asymmetrical way!

Can you share your experience why the UcD sounds so good, and how the sounds is in comparing with very high end amplifiers?

Jan-Peter

www.hypex.nl

19th August 2004, 07:18 PM	#151
paradigm diyAudio Member Join Date: Aug 2004 Location: Stockholm Sweden	Hi Jan-Peter! I didn't quite understand what you mean. But as long as I use only balanced inputs, it doesn't matter, right!? Could you please make a drawing, showing the schematic on: "solder the -input line to ground/screen at the source side and NOT at the side of the amplifier connector." /Roland __________________ Money and power is no longer the solution to our problems. Money and power IS the problem.

19th August 2004, 07:21 PM	#152
Sheriff diyAudio Member Join Date: Feb 2003 Location: England	RIFA Those caps are indeed very good, (and very expensive). Nice to see that you are giving the UcD180 modules the power supply they deserve....... I was a father for the third time last night - and i still look at the forum today.... Oh, if only i had a life Best Regards Sheriff

19th August 2004, 07:32 PM	#154
Sheriff diyAudio Member Join Date: Feb 2003 Location: England	Hard at it.... Hi Jan - Peter, Nice to see you hard at it, at this time in the evening. At the rate you are going, you will have paid for that new building of yours before you have even moved into it.....! All the best Sheriff

19th August 2004, 07:35 PM	#155
paradigm diyAudio Member Join Date: Aug 2004 Location: Stockholm Sweden	Like this you mean? /Roland __________________ Money and power is no longer the solution to our problems. Money and power IS the problem.

19th August 2004, 07:40 PM	#156
paradigm diyAudio Member Join Date: Aug 2004 Location: Stockholm Sweden	...And then of course only use the 2+ line and ground on the main in side. /Roland __________________ Money and power is no longer the solution to our problems. Money and power IS the problem.


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19th August 2004, 07:28 PM	#153
Jan-Peter diyAudio Member Join Date: Sep 2003 Location: -	Roland, Indeed with a symmetrical input everything is ok! But supose you would use an asymetrical input so must put one wire to ground. Normaly to keep everything in phase you put the -input to ground. The question is at which place do you put this to ground? The best would be at the side where the source is. So you will pick up the signal at the side of the source. Regards, Jan-Peter www.hypex.nl

19th August 2004, 07:41 PM	#157
Jan-Peter diyAudio Member Join Date: Sep 2003 Location: -	Sheriff, ...hm ok I am working late. But who is here on the forum and get a new born Child Congratulations to your new born Child! Roland, Indeed this is completly right! Now you take your signal still "slightly symmetrical", because the small signal voltage what is on the screen does not go to the input. Jan-Peter

19th August 2004, 07:47 PM	#158
paradigm diyAudio Member Join Date: Aug 2004 Location: Stockholm Sweden	Thanks for the info! It's good to know, should I, or anyone else need to go unbalanced. /Roland __________________ Money and power is no longer the solution to our problems. Money and power IS the problem.

19th August 2004, 08:07 PM	#160
Jan-Peter diyAudio Member Join Date: Sep 2003 Location: -	...Bruno, you had a better eye as I Ofcourse the best is a symmetrical output and it would be VERY stupid to connect it in an asymmetrical way! Can you share your experience why the UcD sounds so good, and how the sounds is in comparing with very high end amplifiers? Jan-Peter www.hypex.nl

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