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Old 6th December 2003, 08:53 PM   #11
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Strange, Dean that people of the UCD forum didn't reply on this earlier....
Guess they are still watching the datasheets.

And yes, will try this one as soon as I get my hands on a sample.

BTW can you imagine a better diy-info including pcb and bom.
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Old 6th December 2003, 10:20 PM   #12
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Hi,

Judging from the authors own words:

Quote:
Now, the technology (if you can call a circuit with 16 transistors that) to deliver low output impedance with frequency-independent low distortion in class D exists. Built with audiophile-grade parts it'll scare the pants off any high-end amp (while I'm the designer of that circuit and thus some care reading this statement is warranted, I do have a lot of serious folk to back up my claims). Of course, having these characteristics it sounds more like other high-end amps than that it sounds different, in the same vein as that the best tube gear and the best solid state gear don't differ by miles in sound.
TDA8924 is certainly not UCD.

Best regards,

Jaka Racman
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Old 6th December 2003, 10:25 PM   #13
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Hi,

Judging from the authors own words:

Quote:
Now, the technology (if you can call a circuit with 16 transistors that) to deliver low output impedance with frequency-independent low distortion in class D exists. Built with audiophile-grade parts it'll scare the pants off any high-end amp (while I'm the designer of that circuit and thus some care reading this statement is warranted, I do have a lot of serious folk to back up my claims). Of course, having these characteristics it sounds more like other high-end amps than that it sounds different, in the same vein as that the best tube gear and the best solid state gear don't differ by miles in sound.
TDA8924 is certainly not UCD.

Best regards,

Jaka Racman
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Old 7th December 2003, 06:47 AM   #14
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didn't say that it was ucd.
Just expected more interest from posters out of that area.
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Old 7th December 2003, 12:26 PM   #15
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Default COOL

About 16 transistors..even probably 14 if without short protection?
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Old 8th December 2003, 03:21 PM   #16
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I think the amplifier in Yamaha DVX-S120 and DVX-S200 is UcD
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Old 12th December 2003, 12:46 PM   #17
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Hi,

technical data of "One of the best analog class D at this planet" (Yamaha DVR-S120) see picture:

also see Yamaha's best analog class D amplifier Yamaha MX-D1

Best regards,

Jaka Racman
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File Type: gif yamaha dvr-s120.gif (47.5 KB, 960 views)
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Old 12th December 2003, 12:58 PM   #18
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Based on the specs shown above, I don't think this yamaha is using Philips UCD class d amp circuit....
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Old 12th December 2003, 01:10 PM   #19
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Thank Jaka Racman
16 transistors & <$3 & THD independent from frequency @-3db power <0.05%(maybe 0.02%). If it will be cost $5 or $50? No bad?
Best regards, Ivan.
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Old 18th December 2003, 10:21 AM   #20
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Dear EDUM:

Nice to know someone in Philips!!

I would like to know in early 90's Philips have a set of 900 series Hi-Fi Component, one of the system is DSC-930 and DSS 930 Digital Speaker, the amplification of the Digital Speaker is Digital Amplifier or not???

And I have a DCC player, no where can repair it... will Philips Holland still able/willing to fix it.???
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