hey guys i'm interasted about buying this amp from ebay 2PC TDA8920 BTL 2.0 Audio Amplifier AMP Kit 200W+200W - eBay (item 260708920904 end time Mar-16-11 01:10:07 PDT)
but there is not much information about it. i need your help to know if i can hook up 6 ohm speakers or only 8 ohm and do i get the 200watt rms at 8 ohm , have anyone used one of this amps, are they solid, isn't the heatisnk too small( will adding a cooling fen help ) , why there r 4 outputs while it says 2x200 watt and isnt too cheap for a 2x200watt amp(becouse i see other amps with less wattage aer the same price or more...)
or even this one theres not much information too
http://cgi.ebay.com/TDA7294-BTL-Speakers-Protected-KIT-Audio-Amp-150W-2-/260701348286?pt=LH_DefaultDomain_0&hash=item3cb302e1be
but there is not much information about it. i need your help to know if i can hook up 6 ohm speakers or only 8 ohm and do i get the 200watt rms at 8 ohm , have anyone used one of this amps, are they solid, isn't the heatisnk too small( will adding a cooling fen help ) , why there r 4 outputs while it says 2x200 watt and isnt too cheap for a 2x200watt amp(becouse i see other amps with less wattage aer the same price or more...)
or even this one theres not much information too
http://cgi.ebay.com/TDA7294-BTL-Speakers-Protected-KIT-Audio-Amp-150W-2-/260701348286?pt=LH_DefaultDomain_0&hash=item3cb302e1be
the data sheet gives 10% THD at 140 watts into 8ohms
Mono bridge-tied load configuration
output power
RL = 4 W; THD = 10%; VP = ±17 V; 110 - Watt
RL = 8 W; THD = 10%; VP = ±25 V; 140 - Watt
I'd take the Ebay figures with a pinch of salt
Heat sink is probably OK as this is a class D amp and presumably efficient.
Mono bridge-tied load configuration
output power
RL = 4 W; THD = 10%; VP = ±17 V; 110 - Watt
RL = 8 W; THD = 10%; VP = ±25 V; 140 - Watt
I'd take the Ebay figures with a pinch of salt
Heat sink is probably OK as this is a class D amp and presumably efficient.
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