An old laptop power supply / charger is good. If these amps are used at at more than a few watts, a bigger or additional heatsink is needed, an old Computer CPU one will probably do.Originally Posted by paulf-2007
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I'm Alex.
An old laptop power supply / charger is good. If these amps are used at at more than a few watts, a bigger or additional heatsink is needed, an old Computer CPU one will probably do.
Spendorman
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Location: Middlesex, UK
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I'm Alex.
An old laptop power supply / charger is good. If these amps are used at at more than a few watts, a bigger or additional heatsink is needed, an old Computer CPU one will probably do.
12V won't give maximum output, I think 24V is too much (check the data sheets),
Spendorman
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I'm rupert.
2$99 + a PSU lying around = 3$ and sound not that bad at all. Tweeks on diyaudio.com
http://www.ebay.com/itm/TDA7297-Vers...item1a00bd0bee
also this one with bluetooth
Last edited by r100; 23-03-2017 at 18:04.
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Location: Middlesex, UK
Posts: 4,482
I'm Alex.
2$99 + a PSU lying around = 3$ and sound not that bad at all. Tweeks on diyaudio.com
http://www.ebay.com/itm/TDA7297-Vers...item1a00bd0bee
I also bought three of these, one was dead, the other two perform no different (good) to the TDA7266 amps mentioned above, although the supplied heatsink is slightly larger.
Spendorman
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I'm rupert.
yep, that is the risk. Out of three I bought, 2 worked
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Location: Middlesex, UK
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I'm Alex.
lol, exactly the same! I have a feeling that the TDA7266 version is more carefully (if that's an appropriate word) built.
Even the duff one was useful for the volume control pot and knob, they might be cheap, but quality seems OK.
Spendorman
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50W RMS per channel (into 4 Ohm), 30 W RMS per channel (into 8 Ohm).
"Chip: TPA3116D2
Audio Type: Class D
Input voltage: DC5-24V
Operating Frequency: 20 HZ-20 HZ
Output Type: 2.0 channel
Size: 84 * 51 * 29mm
characteristics:
A full range of protection systems with reverse power protection, speaker output protection against short circuit, but also with anti-shock switch design, switch machines without "POP" sound."
http://www.ebay.co.uk/itm/DC-5-24V-T...-/282361391300
Spendorman
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I'm Alex.
100Watts into 8 Ohms
http://www.ebay.co.uk/itm/TDA7293-Di...-/172360141083
Not tried these, but suspect that they are good. I have an old Radford SPA50 that is not working, had an unsuccessful attempt at repairing it, considered putting the above modules in, would need a different mains transformer though.
Spendorman
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I'm Andrew.
My cheapo power amp from China arrived today. More to follow when I have some time tonight.
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Could be interesting.
It is impossible for anything digital to sound analogue, because it isn't analogue!
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