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Among the things that have happened since 1976 are super high performance MOSFETs, that play directly into the hands of Class-D amplifiers. But actually making
by analog31 4y ago
Among the things that have happened since 1976 are super high performance MOSFETs, that play directly into the hands of Class-D amplifiers. But actually making Class-D amps robust involves a steep learning curve and an expensive oscilloscope. This is the reason why, for example, musical instrument amplifiers tend to use pre-made Class-D amp modules such as those made by IcePower.
The amplifier that I use for playing the bass is Class-D, as are all of the audio amplifiers feeding speakers in my house.
- skybrian 4y agoHmm. IcePower looks pricey and it's probably not for portable, battery-powered audio?
- analog31 4y agoThey're not for battery power, since a major part of their appeal is integration of the power supply and amplifier on a single board. Some of the other modules sold by Parts Express are designed for lower voltage DC power. Then it becomes a matter of how much power you need, for how long, and what that translates into in terms of battery capacity. Speaker efficiency also plays an obvious role.