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460000uF Puffer
MJ11022 & MJ11021 4+4 piece transistor (+/- 27,5VDC to +/- 250VDC transistor operating voltage)
700VA transformator +/-55VAC
2x 4,5VA transformator +/-9VAC 2x 20uF MKT puffer & ferrit choke 5H 4 piece positive side (LOW NOISE) Pre-Amlifier TL072 IC 2 piece Mono Block
Soft start 2x3,3uF 400V condensator, 1s/1V x 460mA, load time: 60s & Soft plant: 2x12W +/-30VDC
Amplifier only MKP condensator (non electrolit) A-H Class 2x 300W 8ohm /2x 420W 4ohm
4x RCA in & 2x Speakon out. + 2 piece Speakon to Jack 6.3 adapter
Power cabel 250VAC 10A ungrounded plug
In side out cabel to speakon connectors 2500W
2x Glimm lamp Clip back indicator show on minimum and optimum Clip. No light = Clip (Optimum ready to Clip) with inverter drive, the voltage can drop. Minimum +/-30VDC Clip & optimum +/-47,5VDC.
1x Glimm lamp back side mains current indicator.
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Clipping indicator is circuit, which signalise with LED when the output of amplifier is in limitation and output transistors are fully open and audio signal is cutted close to power supply voltage. In this case the acoustic signal is distorted in a power amplifier.
Here it is the other way around, if the current drops too low and the transistor cannot remain open, it indicates. What is written can only be displayed when the device is disconnected from the power source, as the maximum opening can only be measured with a suitable instrument. Normally 8VDC is full open. Minimum 5VDC open. Distortion is usually caused by a weak preamplifier. Drive performance is low. if I overdrive it, I should see trapezoidal and square signals on end drive transistors. On the other hand, it should result in a zener diode-like distortion. As the voltage decreases, the opening voltage also decreases. For these reasons, it would not be able to open too wide. The voltage drops due to the previous operation, therefore the opening voltage drops for the next operation. Because when the transistor turns off due to the voltage drop, it makes a popping sound like when you turn it on without a soft start. This is more disturbing than cutting the top of the wave for the power of an operation. I'm running somewhere around 5.86V for basic opening, so it's not too wide open. Then somewhere around 5.3V it already clips. The degree of opening gives the degree of heating, the larger I open, the more current is absorbed between the EMITTER and the COLLECTOR. If I opened it to 7V, it would start to heat up at rest. If I pushed the potentiometer there to the maximum, then all transistors are heated at rest. If I rolled it down too much, it was cold.
The maximum opening voltage is 8.8V for this transistor, we are at 150mA
The optimum is between 7-8.4V at 100-150mA, but it can also be between 5.1V-8V.