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5000W High Power Amplifier Circuit

Transistor subwoofer circuit diagram 300W

more info sound.westhost.com/project68.htm

Subwoofer Amplifier 100W

General Description
The TDA7293 is a monolithic integrated circuit in Multiwatt15 package, intended for use as audio class AB amplifier in Hi-Fi field applications, such as home stereo, self powered loudspeakers and Topclass TV. Thanks to the wide voltage range and to the high output current capability it is able to supply the highest power into both 4-Ω and 8-Ω loads.The built-in muting function with turn-on delay simplifies the remote operation avoiding on-off switching noises. Parallel mode is possible by connecting several devices and using pin11. High output power can be delivered to very low impedance loads, so   optimizing the thermal dissipation of the system.

Features:
Multipower BCD technologyVery high operating voltage range (±50 V)DMOS power stageHigh output power (100 W into 8 Ω THD =10%, with VS = ±40 V)Muting and stand-by functionsNo switch on/off noiseVery low distortionVery low noiseShort-circuit protected (with no input signal applied)Thermal shutdownClip detectorModul…

LM3886 Audio Power Amplifier High-Performance 68W Audio Power Amplifier

The LM3886 is a high-performance audio power amplifier capable of delivering 68W of continuous average power to a 4Ω load and 38W into 8Ω with 0.1% THD+N from 20Hz–20kHz. The performance of the LM3886, utilizing its Self Peak In-stantaneous Temperature (˚Ke) (SPiKe™) protection cir-cuitry, puts it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Op-erating Area (SOA). SPiKe protection means that these parts are completely safeguarded at the output against overvoltage, undervoltage, overloads, including shorts to the supplies, thermal runaway, and instantaneous temperature peaks. The LM3886 maintains an excellent signal-to-noise ratio of greater than 92dB with a typical low noise floor of 2.0µV. Itexhibits extremely low THD+N values of 0.03% at the rated output into the rated load over the audio spectrum, and provides excellent linearity with an IMD (SMPTE) typical rating of 0.004%.