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Характеристики
C5200 A1943 tube UPC1342V DC50v 150*2 4 Ohms dual channel power amplifier board | Home Theater Amplifiers
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Buy very satisfied! Amplifier set, подключай and enjoy. Pick up before. To drive.
For test, as a pre-amp used output with amplifier aiyima T9.
Experienced at Power Supply +- 39V, Trans from active c Behringer. Load 4 Ohm ac S90.
Core components: the new high power tube TTC5200 TTA1943,The board line: the line that uses the UPC1342V to directly push the ON high-power tube.Class A current: When the temperature of the transformer and radiator is allowed, try to increase the quiescent current as much as possible. Feel the charm of Class A power amplifier (warm, transparent, good control)! This board debugging method: The left and right channels of this board have an adjustable multi-turn potentiometer for adjusting the quiescent current of the power tube (class A current). After the board is soldered, turn the adjustable potentiometer counterclockwise to the head (the quiescent current is 0) before energizing. After the power-on audition, confirm that there is no problem with the playback, slowly adjust the potentiometer clockwise and simultaneously detect the 0.22 ohm resistor voltage (for example, at 44 mV, the static is 200 mA, and the m-channel measurement power tube E-output can also be used). Adjust the quiescent current to the desired value. Note: Because of the temperature feedback, as the temperature of the heat sink rises, the quiescent current will be pulled down a bit, requiring multiple tests and debugging.Recommended voltage: DC25-55v*2, it is recommended to adjust the quiescent current of each pair to 100mA;Output power: According to the difference of the power supply voltage and the horn impedance, the output power is 20-150w; when the DC50v is powered, it can output 100w/8 ohms, 150w/4 ohms.Size: 183*58mm;Midpoint voltage: about 1mV;Signal to noise ratio: 108dB, noise level: 0.2mV;Supporting radiator: 253*80*50mm, (excluding the heat heater)