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Old 12th January 2003, 05:44 AM   #11
sangram is offline sangram  India
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Well, mistake. Looking at the graphs again, 170 W into 16 ohms is at 10% THD. Not useful. The actual rating should be close to 120 W. Useful...
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Old 12th January 2003, 11:45 AM   #12
Jaac is offline Jaac  Netherlands
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hi

i've build also a tda based amp. the sound is good not very good but good if you have a good power supply i used a 300VA 30-0-30 V amplimo with a total of 40000 uF buffering here are some pics;

Click the image to open in full size.
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Old 12th January 2003, 05:58 PM   #13
vuki is offline vuki  Croatia
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Quote:
What coniguration do you use? Any advantage to inverting config for TDa7294?
I'm using noninv. configuration and I haven't try inverting because of internal muting switch dealing with inputs (according to app. note's diagram). As the IC is quite sensitive and usually doesn't respond well to applications different than suggested in ap. note I didn't want to risk any more...

I already burned handfull of IC's trying to make 3x parallel TDA7293 configuration work. Later, on some german forums, I found that others who tried it had similar results .
There are some more threads about it (search for rljones or vuki).

So: why don't you try it and tell us if it works?
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Old 13th January 2003, 12:34 AM   #14
alvaius is offline alvaius  Canada
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I will try. I have quite a few of them, so if I kill them it is not a big deal.

Alvaius
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Old 16th January 2003, 11:02 AM   #15
Bricolo is offline Bricolo  France
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thos who tested a 7294 and liked it: what shematic did you use? the one in the datasheet (non inverting)

is inverting better sounding?
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