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Deleted member 550749
U can try same output configuration but individual or separately, but my thinking is how can u oprate multiple output transistor with limited bias voltage and current 🤔
I can’t answer that question I don’t understand it too well yet I’m reading and trying I might try it and see how it goes worst case I burn some output transistors 🙂
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Deleted member 550749
Nope u not burnt if u do this without any mistake like previous one grownd short🤣 but for learning u can try 👍
Ya that was a strange problem why the scope ground is shorting out the output but I won’t make that mistake again 🤣
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Deleted member 550749
I don't think ur pcb has enough space for more transistors use small vero for more output transistor and use like this
Ohh so I need another pair of Darlingtons to make this work? I couldn’t just connect to the same drivers ?
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Deleted member 550749
Adding output transistors doesn’t automatically give you greater output power, although the current capability is increased.
To get more power you need more supply voltage, the driver transistors also need to supply more power.
The MX50SE can’t tolerate higher rail voltages as the voltage rating of the transistors is too low and at +-40 you are already close to the limit. Doubling the power of an amplifier is not a trivial tweak, almost all areas of the circuit need to be reviewed, not to mention mechanical aspects like heatsinking which would need to be way bigger.
ljm who designed this amp has other more powerful amps available to you if you are happy with his brand that can supply that sort of power. You will note that they are very different from mx50.
If you need that sort of power, then you could look at honey badger and Wolverine amps that were designed by members here and so many have built them that there is lots of support available.
I found that the books by Douglas Self and Bob Cordell are both very excellent books, very approachable, but both expect that you have basic knowledge.
I also invested in “The Art of Electronics” as I had been away from electronics for 40 years and things had changed a bit 🙂.
CFP output stages seem to suit lower power amplifiers better, since distortion increases as you add output transistors. Emitter follower (EF) output stages tend to reduce distortion as you add output pairs, but unless you have a triple EF design, you will get increased distortion from the 2nd stage (VAS).
The Wolverine is a “Tour de force” in modern amplifier design and there is a great deal to be learned from reading the threads on this amp. ( That will take a while, but well worth the time)
I hope that helps.
Sadly I don’t need an amp as powerful as the Wolverine, but if I did that is what I would choose.
To get more power you need more supply voltage, the driver transistors also need to supply more power.
The MX50SE can’t tolerate higher rail voltages as the voltage rating of the transistors is too low and at +-40 you are already close to the limit. Doubling the power of an amplifier is not a trivial tweak, almost all areas of the circuit need to be reviewed, not to mention mechanical aspects like heatsinking which would need to be way bigger.
ljm who designed this amp has other more powerful amps available to you if you are happy with his brand that can supply that sort of power. You will note that they are very different from mx50.
If you need that sort of power, then you could look at honey badger and Wolverine amps that were designed by members here and so many have built them that there is lots of support available.
I found that the books by Douglas Self and Bob Cordell are both very excellent books, very approachable, but both expect that you have basic knowledge.
I also invested in “The Art of Electronics” as I had been away from electronics for 40 years and things had changed a bit 🙂.
CFP output stages seem to suit lower power amplifiers better, since distortion increases as you add output transistors. Emitter follower (EF) output stages tend to reduce distortion as you add output pairs, but unless you have a triple EF design, you will get increased distortion from the 2nd stage (VAS).
The Wolverine is a “Tour de force” in modern amplifier design and there is a great deal to be learned from reading the threads on this amp. ( That will take a while, but well worth the time)
I hope that helps.
Sadly I don’t need an amp as powerful as the Wolverine, but if I did that is what I would choose.
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Deleted member 550749
It doesn't work like that.
You have -/+39 volts rails which will also drop a little at high current draw. Working with -/+39 volts the amp will swing to perhaps -/+34 volts into 8 ohms (maybe a little less if the rails drop). That is 72 watts rms and that is as much as you can get into 8 ohms. because of the supply limitation. One pair of transistors or ten pairs, you are still stuck with a -/+34 volt swing.
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Deleted member 550749
Same psu but with honey badger?? What will b the performance?? 🤔 PCB is available online he can easily make it # mooly
One idea I should mention is that if you are driving 8 ohm speakers you can “bridge” the outputs provided the psu has enough current capability. If the speakers are less than 8 ohm this is a non runner as the output transistors will be destroyed very quickly. This will give you more than twice the output power into 8 ohms, but it is much harder on the output stages.
https://en.m.wikipedia.org/wiki/Bridged_and_paralleled_amplifiers
You need 2 amps per channel of course so no free lunch!
https://en.m.wikipedia.org/wiki/Bridged_and_paralleled_amplifiers
You need 2 amps per channel of course so no free lunch!
Any amp is going to have similar performance power wise given those rails.