Münster, a diy copy with modifications of an old Sony, have some suggestions? - Page 6 - diyAudio
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Old 20th November 2004, 08:21 AM   #51
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Default Second text part

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Old 20th November 2004, 08:23 AM   #52
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Default Third text part

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Old 20th November 2004, 08:24 AM   #53
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Default Fourth text part

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Old 20th November 2004, 08:26 AM   #54
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Default Fifth text part

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Old 20th November 2004, 08:28 AM   #55
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Default The sixth part

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Old 20th November 2004, 11:36 AM   #56
MikeB is offline MikeB  Germany
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Hi carlos !

You are right, it's impossible to reproduce a perfect squarewave...
No mechanics is able to make such a movement !
Even electronics is not able to do this, but this is simple mathematics.
A real squarewave contains infinite high frequencies.
And for example, if you playback a 22,05khz squarewave with a
good cdplayer, guess what you get... A simple and nice sinewave !
That's because it filters out all frequencies above 22,05khz...
So the amp or tweeter will never see a squarewave, unless you
connect the amp to a signalgenerator...

Checking an amp with a squarewave is only for checking it's stability.
With a squarewave the amp easily shows it flaws and weaknesses.

In my amps i have limited slewrate to about 20v/us, that's enough to
reproduce a clean sinewave at 250khz for 20volt swing.
I could increase slewrate, but not without getting overshoots.
It seems that an amp with overshooting tends to sound bright/harsh.
Anytime i optimized my amps for not overshooting, they sounded better.

Mike
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Old 20th November 2004, 12:17 PM   #57
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Default Thank you MikeB, some informs i really did not knew till this moment

I thank you very much for the technical support, as i cannot go deep to explain what i mean.

But you translate to words that the more skilled guys will understand better.

regards,

Carlos
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Old 20th November 2004, 06:27 PM   #58
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Default Well friends, this is the Münster thread

So, as i openned a thread related to speaker problem, i will ask you, please, to go there if wanting to write something about that subject.

So, the Münster is already alive.

Also in Loudspeaker forum i openned one thread related that subject too.... there, things will have a lot of movement of peoples visiting.

Moderators, seeing too much movement, will join those threads, i expect this one, the Münster, can survive in this place.

The reason why i post the speaker matter here, is because Darkferinz made me think, so, this was made for him, that shake my mind.

I thank you Dark

Carlos
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