Class-D Amplifier - Uses

Uses

• Home Theatre systems. In particular the economical "home theatre in a box" systems are almost universally equipped with class D amplifiers. On account of modest performance requirements and straightforward design, direct conversion from digital audio to PWM without feedback is most common.
• Mobile phones. The internal loudspeaker is driven by up to 1 W. Class D is used to preserve battery lifetime.
• Powered speakers
• High-end audio is generally conservative with regards to adopting new technologies but class D amplifiers have made an appearance
• Active subwoofers
• Sound Reinforcement and Live Sound. The Crest Audio CD3000, for example, is a class-D power amplifier that is rated at 1500 W per channel, yet it weighs only 21 kg (46 lb). Similarly, the Powersoft K10 is a class-D power amplifier that is rated at 6000 W per 2-ohm channel, yet it weighs only 12 kg (26.5 lb).
• Bass amplifiers Again, an area where portability is important. Example: Yamaha BBT500H bass amplifier which is rated at 500 W, and yet it weighs less than 5 kg (11 lb). The Promethean P500H by Ibanez is also capable of delivering 500 W into a 4 Ohm load, and weighs only 2.9 kg. Gallien Krueger MB500, also rated at 500W weighs no more than 1.36kg.