Influence of the delay amplifiers for listening characteristics

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100% agree, Pavel..

I extensively played on stage, and from my experience,
output short circuit is not a likelyhood, but a certainity.

The only question is not if , but when will it happen..

One has to take a look at a PA pro amp, there s often more
components for protection circuitries than for the amplifying
purpose itself...
 
I repeat that a normal person can not operate long into the amplifier to short-circuit.

Mr Federmann, a suggestion:

You are no doubt a smart person but your language handicap prevents meaningful discussions here.
Why not spend one hour each week in an English language class?
You will gain the time spend many times back here (and maybe in your job).

best regards,

jd
 
I have just tried more. At first, I have blown the PSU rail fuses. Then I have measured quite nice 13Apeak output current into 0R22, 1kHz sine. This is with 2 pairs of MJL21193/94.
 

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Federmann, in case you would like to test with 0R22 load, please take into account that such load may change stability of the amplifier significantly.


No worries.

27-5,83≈21V, Transistor power 21V*13A=273W



In your 55W amplifier it is 2 * MJL21193/94 ? (2 * 200W +2 * 200W?)

Current limit is more than 13A?

PMA: What is your transformer, please?
Performance on 1 channel 27V * 13A ≈ 350W
Performance on 2-Channel 700W?
 
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This amplifier is only for me and for my purposes. The current is limited only by PSU and fuses, and paralleled transistors have such SOA that they withstand short circuit (tested), with quite low supply voltage used.

If I built that amplifier for a customer, it would have a current protection circuits. Now it is just a research stage 😀
 
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