Use two stereo ICs or four single-channel ones.Im building an amplifier for home use (4 channel)
Use two stereo ICs or four single-channel ones.
These look like a possibility:
If I were building one for serious listening, I'd use a Class AB amp such as that or discrete components, not a Class D one.
The Class D types are great for background music etc., but are generally not high quality - eg. that TDA7293 IC above is rated maximum 0.1% distortion at 50W.
The TDA7498 Class D 100W IC is also rated 0.1% - at just 1W and 10% by the time it reaches 80W...
(And many of the Class D IC are surface mount so difficult to use or heatsink, other than buying ready-built modules).
There are circuit boards to take the TDA7293 available cheaply on ebay, as well as ready built modules - but I'd not trust the AC input ones & I'd also rather be able to choose my own components so I know the quality..
Reminder: The battery can be used! (Must be a battery in series). Output power: maximum output power 85W.www.ebay.co.uk
Get the ICs from a reputable electronics supplier rather than ebay.
You will need large! heatsinks and a well rated and well-smoothed power supply. Class AB amps are only around 50 - 60% efficient, so the heat dissipation will be near equal to the power to the speakers, and the load on the PSU the sub of both.
Those are not integrated circuits, they are discrete power transistors such as could be used as the final stage of a power amplifier.I was searching around an ic and i found 2sc5200/2sa1943 ic, are they good enough?