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Class D Switching Power Amplifiers and Power D/A conversion

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Old 2nd December 2007, 12:23 AM   #1
h3ad is offline h3ad  Australia
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Question what do you think?

I was wondering if anyone has had experience with a TDA8920BTH
it is a class D amplifier IC and it is amazingly powerful... Like WOW
it has quite nice sound, even for a class D but im just wondering what people think of it, as i quite like it
heres the specs http://www.chipcatalog.com/Datasheet...FCFF308801.htm
i am running it bridged, and ther is 2 IC's on the board, so there is 2 effective channels, not 4
it runs on -+30v rails with 2 8000uF caps


thanx haydn
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Old 2nd December 2007, 02:00 AM   #2
DcibeL is offline DcibeL  Canada
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Distortion plots don't look particularly impressive.
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Old 2nd December 2007, 11:11 AM   #3
h3ad is offline h3ad  Australia
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at the power levels levels stated they dont look too good... but it sounds quite nice and i dont really need as much power as they say they can give
because 10% THD is

thanx haydn
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Old 2nd December 2007, 11:59 AM   #4
fumac is offline fumac  China
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this is my first class-d project
good bass but bad treble
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Old 2nd December 2007, 05:50 PM   #5
mslxb is offline mslxb  Canada
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Default is sony DAV bravia dream home system a class D amp ?

is sony DAV bravia dream home system a class D amp ?

( S-Master Full Digital Amplifier , such as Sony DAV-FX10 , Sony Bravia Theater DAV-HDX500 , DAV-FX900W )

they give out 143w per channel.

the problem is it separates bass from front/rear L/R channels. it seems it only output >200HZ to front/rear L/R channels. the bass (< 200hz ) is output from a separate bass channel.

can we modify it so it can give our full range freq for L/R channels .it will be a very interesting amp compared to T-amp.
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Old 3rd December 2007, 01:52 AM   #6
h3ad is offline h3ad  Australia
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you will probly find it is a setting in the menu
i have a few home theater receivers and they hav options like that eg. fullrange/ no sub, >120hz/sub <120hz and fullrange/sub <120hz

haydn
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Old 3rd December 2007, 02:36 PM   #7
mslxb is offline mslxb  Canada
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Quote:
Originally posted by h3ad
you will probly find it is a setting in the menu
i have a few home theater receivers and they hav options like that eg. fullrange/ no sub, >120hz/sub <120hz and fullrange/sub <120hz

haydn
-----------------for full range , did you ever compare its sound quality to T-amp ? how does it perform ? i am very interested in this comparison.
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Old 3rd December 2007, 02:36 PM   #8
mslxb is offline mslxb  Canada
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Quote:
Originally posted by h3ad
you will probly find it is a setting in the menu
i have a few home theater receivers and they hav options like that eg. fullrange/ no sub, >120hz/sub <120hz and fullrange/sub <120hz

haydn
-----------this menu is in sony bravia digital amp ?

i only find it in other amp , such as denon, jvc .....
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Old 12th December 2007, 11:37 AM   #9
h3ad is offline h3ad  Australia
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just something i assumed, never used a sony bravia amp, i think they are a ripoff for what u actually get

but bow i am on the subject; u would think that an amp that costs more than most of the same in its league would have at least that feature hey??

haydn
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