Which netizen can inform the parameters of this power amplifier tube?

I stumbled upon some of the parameters in the introduction of this house, cattle.

Summary. A: Yes, but there are some caveats.

First of all, due to the difference in values, the performance of the amplifier may be affected, especially in the high and low frequency bands, problems such as noise and distortion may occur. Secondly, due to the difference in values, it may affect the output power of the power amplifier, which may affect the efficiency of the power amplifier. Workaround:

1.First of all, we should try to choose a tube with similar values to ensure the performance of the power amplifier. 2.

Secondly, the appropriate circuit design should be selected according to the actual situation to improve the performance of the power amplifier. 3.Finally, the appropriate circuit design should be selected according to the actual situation to improve the efficiency of the power amplifier.

Can you still use the value of the amplifier to the tube if there is too much difference?

A: Yes, but there are some caveats. First of all, due to the difference in values, the performance of the amplifier may be affected, especially in the high and low frequency bands, problems such as noise and distortion may occur.

Secondly, due to the difference in values, it may affect the output power of the power amplifier, which may affect the efficiency of the power amplifier. Workaround:1

First of all, we should try to choose a tube with similar values to ensure the performance of the power amplifier. 2.Secondly, according to the actual situation, we should choose the appropriate circuit design to improve the performance of the power amplifier.

3.Finally, according to the actual situation of the volatile, the appropriate circuit design should be selected to improve the efficiency of the power amplifier.

Excuse me, but please go into more detail?

A: Yes, but there are some things to be aware of. First of all, due to the difference in values, the performance of the amplifier may be affected, especially in the high and low frequency bands, problems such as noise and distortion may occur.

Secondly, due to the difference in values, it may affect the output power of the power amplifier, which may affect the efficiency of the power amplifier. Finally, due to the difference in values, it may affect the adjustment accuracy of the power amplifier, and thus the stability of the power amplifier. Therefore, when using the power amplifier of different values of slow mu, it should be adjusted according to the actual situation to ensure the performance and efficiency of the power amplifier.

In addition to this caution, when using power amplifiers with different values, you should pay attention to the temperature of the power amplifier to ensure the safety of the power amplifier.

There's no need, unless you want to push a speaker with lower impedance.

For power amplifiers, when the impedance and power supply of the power amplifier are decided, the output power is also determined.

If the original power amplifier tube can already meet the needs of the current transmission, adding the pair tube is only to reduce the load current of the original tube.

It can be (remember to install an emitter resistor), considering the current of the final tube, the area of the heat sink can not keep up, you add a tube, it is likely that you need to lower the current, the effect may not be as good as now, so there is no need to toss.

The actual power of the amplifier depends on the backing voltage, not the power tube.

Think of a power tube as a current-limiting resistor', which is connected in series with the speaker RL. The higher the supply voltage V, the higher the flow through R'with the current of RL.

i. When V is too loud and the maximum volume is up, i

The power tube r may be exceeded'The limit of what it can bear will burn the tube, which is the original intention of multi-tube parallel. Divide i into n and spread it evenly among the power tubes r'1,r'2...r'n。

Theoretically, the increase of the power tube has no effect on the actual output power, but in practice, due to the internal resistance of each power tube and the existence of the series cement resistance of class E, increasing the number of power tube logs will reduce the total number of the above two parameters to 1 N. At this time, the efficiency of the power amplifier will increase, and the corresponding power output will also increase, but the increase is not large. p (kv) 2rl,k is the efficiency factor, which can be changed between 0 6 0 8, and the number of power tube pairs will affect the k value when the circuit is fixed.

It is necessary to measure the operating point (operating voltage) of the power tube, and if it works on the reference voltage, the power of a pair of tubes is about 50W. Another estimation method is to touch the heat of the radiator after working at a medium volume for an hour, if it is above 50 degrees, each pair of tubes is almost 50w, if it is only warm, it is about 30w per pair.

If the current is large enough and the voltage is high enough, a pair of tubes is about the same as 50W.

Power Band Width: The vocal range is 20Hz 80kHz, and the frequency response of the speaker from bass to treble requires a response capability of 20Hz 20kHz. However, the frequency response of the power amplifier, which is the "bottleneck" of signal transmission, is required to be wider, such as:

7Hz 80khz Hz to ensure the integrity of the signal.

Signal-to-noise ratio. signal to noise ratio): This is the parameter that most directly reflects the quality of the power amplifier, generally above the ratio of 80db, and high-quality products often reach more than 105db, the pursuit of pure sound bottom, can not be ignored.

Two. Distortion (THD): This can be combined with two other important indicators of the amplifier: power rating.

RMS) and peak power. When a power amplifier works at its RMS power, the distortion should be relatively small, generally up to this range. peak power or bridging, the signal may be distorted, clipped, etc., and the ratio will be high:

1% is normal. The smaller the ratio, the better.

This socks quiet power amplifier is a constant voltage power amplifier, the power hunger search rate is 600W, the power supply is dual 45V and double 100V power supply, double 45V through the high-power rectifier diode to the power amplifier power supply end, double 100V through the field effect tube control to the power amplifier limb slag power supply end, now I shorted the field effect tube SD two pins, that is, double 100V power supply, the test machine is normal, I don't know if there will be an impact in the future?