UcD modules' limits on delivered current. - Page 3 - diyAudio
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Class D Switching Power Amplifiers and Power D/A conversion

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Old 26th September 2006, 07:22 PM   #21
beppe61 is offline beppe61  Italy
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Join Date: Feb 2005
Location: torino
Default Re: Give me a call...

Quote:
Originally posted by m.parigi
Beppe, I'm Italian and I live in Torino (well, close enough... Chieri). I've built a 6-channel power amp based on unmodified UCD 400.
It sounds awesome with any kind of load: I own both ribbon speakers (Apogees) and horn speakers (Avantgarde) and the sound is always fantastic.
If you want to send me your coordinates via email we can arrange for meeting and having some listening sessions...
In Italian: Mandami per mail le tue coordinate, così ci possiamo sentire e/o incontrare!
Here's a picture of my amp with only 2 channel power supply installed...
My sincere congratulations for your amp.
Very well built indeed.
You have personal mail.
Thank you very much for your extremely kind invitation.
Kind regards,

beppe
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Old 27th September 2006, 02:45 AM   #22
fokker is offline fokker  China
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Quote:
Originally posted by classd4sure



Yeah if you're trolling, you're right though, it really wasn't worthy of an answer, that's why what I gave you was more along the lines of rtf.

you should try to get more maturity because you badly need that. Grow up a little bit.

I asked the question in order to get the poster to think about it a little bit, as the current going through the mostfet is shared by the capacitor in the filter and the load, assuming no cross conduction.

apparently it went over your head faster than a lightening rod.
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Old 27th September 2006, 03:21 AM   #23
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Quote:
Originally posted by fokker
bla bla bla...
I asked the question in order to get the poster to think about it a little bit, as the current going through the mostfet is shared by the capacitor in the filter and the load, assuming no cross conduction.

apparently it went over your head faster than a lightening rod.
No, you posted your non question because you thought you had a clue again, but you didn't sit down fast enough to wait for it to go away.

"is it possible that the current going through the mosfet isn't 1 for 1 going through the load? if so, maybe the instataneous power from those modules is much less?"

You really think they rate the module as per the level of current passing through the mosfet as opposed to the output of the module? You really think that's even at all related to the actual instantaneous output current... and on a module with a 20A current limitter (at the output... lol)?

You're really trying to pass that off as being some tip out of the grace of your good experience?

Fokker I really think the day you're over my head, I'll be six feed under. Get up earlier if you want to play games like this with me.

PS:

I've never seen a very fast lightning rod, usually they're bolted down fairly solidly, might sway just a little bit in stronger gusts but really, not much velocity or anything.. has anyone ever seen a super fast ligntning rod...
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Old 27th September 2006, 03:28 AM   #24
ghemink is offline ghemink  Netherlands
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Join Date: Jun 2004
Location: Japan
Default Re: Re: Give me a call...

Quote:
Originally posted by beppe61


My sincere congratulations for your amp.
Very well built indeed.
You have personal mail.
Thank you very much for your extremely kind invitation.
Kind regards,

beppe

Hello Beppe,

Welcome to Class D, great that you can listen to it before you decide. Please let us know here what you think of it. Most people here (including myself) are already in Class D heaven and may not be objective anymore. If you like what you hear, go for it, you will not regret it. I think you will instantly here the difference between Class D and something else. I`m now using UcD modules for more than 2 years in an active speaker system, very pleased with them.

Wish you a good listening session.

Gertjan
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Old 27th September 2006, 03:49 AM   #25
fokker is offline fokker  China
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Quote:
Originally posted by classd4sure
Fokker I really think the day you're over my head, I'll be six feed under.


and that day was yesterday.

Quote:
Get up earlier if you want to play games like this with me.
sorry, I don't intend to waste my time.
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Old 27th September 2006, 03:52 AM   #26
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OK, but I'd still like to see a supersonic lightning rod.
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Old 27th September 2006, 05:51 AM   #27
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Hi guys,

Trying to read up on class D using the UCD modules and learn a bit but..............

When 6 out of 26 posts (23% ish) on one thread are bickering it really doesn't help. Can we skip it get on with the helpful stuff? I got all the training I need in cussing/dissing/verbal slapping etc at junior school

Many thanks for your previous informative posts on the other larger (200+ post) threads, they have been most helpful.

JRKO
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In the interests of full disclosure JRKO = James Rupert Kingsley Osborne. And yes, my parents will pay for it when I choose their retirement home
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Old 27th September 2006, 06:23 AM   #28
beppe61 is offline beppe61  Italy
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Join Date: Feb 2005
Location: torino
Default Re: Re: Re: Give me a call...

Quote:
Originally posted by ghemink

Hello Beppe,
Welcome to Class D, great that you can listen to it before you decide. Please let us know here what you think of it. Most people here (including myself) are already in Class D heaven and may not be objective anymore. If you like what you hear, go for it, you will not regret it. I think you will instantly here the difference between Class D and something else.
I`m now using UcD modules for more than 2 years in an active speaker system, very pleased with them.
Wish you a good listening session.
Gertjan
Dear Mr. Gertjan,

Actually in the next days I will have the opportunity to listen to an amp sporting UcD modules.
These modules are very interesting.
I have heard of great coherence through the all audio range.
By the final test is to listen for myself.
It would be extremely interesting for me to know which power amps you and other DIYers here have replaced with UcD based power amps.
It would give me a sort of reference to rank the modules.
The UcD 400 looks the more interesting for my needs (a solid bass response, more than the 180 I think).

Thank you very much indeed and kind regards,

beppe
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Old 27th September 2006, 08:01 AM   #29
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Location: Hong Kong
I replaced my Krell 400xi integrated with Bent Audio TAP2 passive preamp and 4 x UcD400AD monoblocks all with SPS80 SMPS. Even this combo costs more but for me this is a heavenly match.
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Old 27th September 2006, 09:33 AM   #30
beppe61 is offline beppe61  Italy
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Join Date: Feb 2005
Location: torino
Quote:
Originally posted by proengin
I replaced my Krell 400xi integrated with Bent Audio TAP2 passive preamp and 4 x UcD400AD monoblocks all with SPS80 SMPS.
Even this combo costs more but for me this is a heavenly match.
WOW ! What an endorsement.
Not that I have heard the Krell actually but I read great words about it.
Thank you very much indeed.
Kind regards,
beppe

I see you mention a SPS80 SMPS
Could you provide a link for that ?
SMPS good for audio are quite unique out there.

FOUND ! thank you.
Which speakers are you using?
My main doubts mostly concern the low part of the audio range (<50Hz) that I deem of paramount importance for my targets.

Regards,

beppe



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