New DISPRE preamp, successor to previous popular version - Page 58

Jan Dupont · 16th October 2009, 03:43 AM

Quote:

Syn08, you are being a little overly critical.

We have sadly been there ealier in another thread with no effect. Stopped by a moderator and posts deleted............ Watch out for the sin-bin

Bonsai · 16th October 2009, 03:45 AM

Great result PMA.

Jan Dupont · 16th October 2009, 03:51 AM

Yes

Back to topic.
Nice work, PMA

PMA · 16th October 2009, 07:12 AM

Thank you guys, nice to meet you here. Jan, I am in Grenaa on Nov 10th, but no chance to visit Copenhagen.

Jan Dupont · 16th October 2009, 07:45 AM

PMA; I might in Jutland that day

syn08 · 16th October 2009, 09:34 AM

Quote:

Originally Posted by Jan Dupont

We have sadly been there ealier in another thread with no effect. Stopped by a moderator and posts deleted............

Distorting the truth is no better than distorting the signal. But then, that's all your DIY team does really good. My last post here, this thread does not belong to this forum and there's no reason to push it up. You go ahead.

Jan Dupont · 16th October 2009, 09:43 AM

Now we can get serious

Juergen Knoop · 16th October 2009, 12:47 PM

Quote:

Originally Posted by peranders

PMA like myself are engineers and we like to measure

maybe, but his cryptic ways make him a lousy lecturer.
A distortion chart without a specified load impedance is worthless.
An engineer should know that.

So dear Pavel please tell us about the load!

Are you referring to headphonelike loads as semola asked for?
Regards

PMA · 17th October 2009, 07:34 AM

The load was 10k, as a usual input impedance of the power amplifier. I can measure the plot for 600 ohm or even less later.

Jan Dupont · 17th October 2009, 09:38 AM

Please make a plot for 600 ohm :-)

16th October 2009, 03:45 AM	#572
Bonsai diyAudio Member Join Date: Aug 2006 Location: Taipei, Taiwan	Great result PMA. __________________ bonsai http://www.hifisonix.com/

16th October 2009, 03:51 AM	#573
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	Yes Back to topic. Nice work, PMA __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

16th October 2009, 07:12 AM	#574
PMA diyAudio Member Join Date: Apr 2002 Location: Prague, Kitakyushu, Fukuoka	Thank you guys, nice to meet you here. Jan, I am in Grenaa on Nov 10th, but no chance to visit Copenhagen. __________________ Pavel Macura, consultant http://cz.linkedin.com/pub/pavel-macura/4/783/637

16th October 2009, 07:45 AM	#575
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	PMA; I might in Jutland that day __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

16th October 2009, 09:43 AM	#577
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	Now we can get serious __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com


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17th October 2009, 07:34 AM	#579
PMA diyAudio Member Join Date: Apr 2002 Location: Prague, Kitakyushu, Fukuoka	The load was 10k, as a usual input impedance of the power amplifier. I can measure the plot for 600 ohm or even less later. __________________ Pavel Macura, consultant http://cz.linkedin.com/pub/pavel-macura/4/783/637

17th October 2009, 09:38 AM	#580
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	Please make a plot for 600 ohm :-) __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

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