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Old 6th January 2013, 04:39 PM   #11
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Originally Posted by PROFESSOUR2003 View Post
DIY Audio 300 Watt IC TDA7294 Chip Power Amplifier Circuit for Home Stereo or Subwoofer
TAKE A LOOK THEY USE 4 OHM SPEAKER WITH TDA7294 IN BRIDGE MODE THEY SAY IT`S 300WATT..!!!!!!
Hi. It would be possible to design an amplifier which delivers 300 Watts RMS into 4 Ohm load using the TDA7294. It would need 4 x TDA7294 in bridged/parallel mode. The power supply voltages would need lowering and/or a current limiting resistor would need to be added to the output of each IC to prevent it from pushing out more current than it is designed to do.
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Old 8th January 2013, 09:12 PM   #12
JMFahey is offline JMFahey  Argentina
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It is possible, Marshall did in their MF350 guitar amp.
The amps burn so often that they had to offer a plug-in module so Musicians can repair them at home, that model stopped being carried by Music Shops because they did not want to deal with customer anger, and was quickly discontinued.
Pro Techs also avoid servicing them.
Go for any tried and true schematic, you'll find a few even here at DIY.
Does that answer your doubt?
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Old 8th January 2013, 09:17 PM   #13
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i cant reach the website linked in the first post it brings me to time warner cable search help?
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Old 8th January 2013, 11:22 PM   #14
JMFahey is offline JMFahey  Argentina
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Quote:
i cant reach the website linked in the first post
It's a 2010 link, no longer valid.

Quote:
it brings me to time warner cable search
Maybe they hacked your PC, the correct answer should be "page not found" or similar.
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Old 9th January 2013, 08:49 PM   #15
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My internet service provider is time warner cable does that have to do with anything?
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Old 10th January 2013, 01:01 AM   #16
JMFahey is offline JMFahey  Argentina
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Originally Posted by realflow100 View Post
My internet service provider is time warner cable does that have to do with anything?
Don't know, you mentioned it.
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Old 10th January 2013, 01:34 AM   #17
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Quote:
Originally Posted by PROFESSOUR2003 View Post
DIY Audio 300 Watt IC TDA7294 Chip Power Amplifier Circuit for Home Stereo or Subwoofer
TAKE A LOOK THEY USE 4 OHM SPEAKER WITH TDA7294 IN BRIDGE MODE THEY SAY IT`S 300WATT..!!!!!!
I would forget the chip amps and go for a proper class AB amplifier which is rated for high power.
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Old 10th January 2013, 01:40 AM   #18
JMFahey is offline JMFahey  Argentina
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Agree. Same here.
Besides, chipamps are great for providing a simple solution, fine.
But with 4 15 leg chipamps, you are reaching 60 pins total, just for them , plus auxiliary elements.
When proper robust versatile discrete amps become simpler than the unflexible chipamp solution, then chipamps lose a lot of their attraction.
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