1. Gain clone LM3886, TDA7294
In accordance with the functions / applications at its data sheet, this amplifier is more suitable room to room because of its power around 50watt's. Its application in the high-end TV and surround sound. Both work in class AB. TDA7294 has been using a pair of mosfet as a final, while the LM3886 are still using ordinary transistors. Testing
With speakers from 6 "to 15" bass tone is pretty mediocre, using two bass speakers adds a new feel. This amplifier is low noise and low gain input signal so thirsty. Input signal must be amplified with a series of super galaxy plus tone control, if not this bass tones really mediocre.
Low noise, almost as in power off condition. I tried it on the PCB stereo. CT 24v 24v power supply, the power output of the left-think of OCL.
2. OCL
The circuit is quite popular. Even many people who exclude this power, I still use this power. They said a rough voice 2N3055 transistor. if you look at the data sheet and compare it with MJ2955 probably yes. But the test results actually good. Fine treble voice, clear medium, super, bass tolerable. My test page that wide use ACR C1230, good sound, the bass notes are lacking, this deficiency is in the speaker is not in power. Speaker replace it with black magic and a little modification on the box of his new bass tone out. To date I have not found the power amplifier assembly is better than this amplifier. The series of the most simple and cheap prices. Output power can be adjusted to supply its value, less than approximately 70 Watts with 32V supply ct. Input supply ranging from 18V to 32V. PA is lauched heat until the solder melts and loose wires. Replace the cable, again Ok. This excess PA transistorl OCL. PA is optimized to drive a speaker 12 ". For more than 12 speakers", we can use the air-supply amplifier is more than 32 volts.
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