TDA7294 + Power Transistors AMP (TDA7293 to come also) - Page 64 - diyAudio
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Old 14th April 2017, 08:16 AM   #631
Mayday is offline Mayday  Sweden
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Hmm,
I wonder if these can be used, with modifications, for the tda7293 + 2sa1943/2sc5200?
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Old 11th May 2017, 07:40 PM   #632
Mayday is offline Mayday  Sweden
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Will a 500VA 2*24Vac toroidal transformer be sufficient to power the TDA7293+2SC5200/2SA1943?
For main supply caps I was thinking 4*10000uF/63V.
The amp is to drive a pair of Dayton 15" IB woofers in H-baffles (with dipole compensation).
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Old 11th May 2017, 09:02 PM   #633
Art M is offline Art M  United States
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Old 20th May 2017, 06:31 PM   #634
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Hi , just made the TDA7294 + 2 transistors version on a spider-build setup just for testing , unfortunately , i just get the distorted signal that i input (music or test signal).
I put the scope on the ouptut of the TDA7294 (pin 14) and all i get is a distorted waveform , triple-checked the connections and added 2 capacitors for decupling as close as i could to the TDA7294 thinking that maybe it shuts down or it
oscillates(like the TDA2003) , but this was not the case since the sound is not powerfull enough.
Nothing gets worm , separating the output transistors and touching the bases gets me hum in the speaker.
Any ideas?

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