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Old 22nd February 2012, 08:32 PM   #1031
evette is offline evette  Canada
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Mr. Rudy I,ll Email you. evertte
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Old 22nd February 2012, 09:45 PM   #1032
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Originally Posted by evette View Post
Hey Mr. Wayne I,m sure your working very hard on your amps and I,m sure you,ll have many wonderfull hours tinkering with them is there anything I can help you With
Yes, My list is long ... I will send by courier ....

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Originally Posted by BMW850 View Post
Hi Evette,

It is no problem, I thought there was no interest in modifications that I do.
Tell something more about the modification where you're talking about, maybe to design a new board?

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Rudy
Not so Rudy, maybe people don't respond at the moment .. same as you !!!
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Old 23rd February 2012, 12:46 AM   #1033
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You're right Astankov, I was pointing to the wrong resistor. The picture below is corrected.

Well, to emulate the gain of a 200W RMS /8 Ohm consumer power-amp, the values should be around 47K for R11 and 1.8K or 1.6K for R09, which would give a gain of around 27-30.

So an input of 1.4v RMS would give about 200W RMS into 8 ohm.

Please always correct me when I'm wrong hahaha.
Martin.
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Last edited by canonnica; 23rd February 2012 at 12:49 AM.
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Old 23rd February 2012, 05:22 AM   #1034
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A new design with 4 pair output trannies and if you are looking very good you see something else.This is a try out version
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Old 23rd February 2012, 05:41 AM   #1035
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Canonnica now is correct. You can use this formula for easier calculation:

Gain= (R11/R9)+1

Meanman what software do you use to produce this board? It is really beautiful and I want to give myself a try with this software.

Have a nice day everyone!
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Old 23rd February 2012, 09:06 AM   #1036
alex mm is offline alex mm  Romania
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Old 23rd February 2012, 12:26 PM   #1037
BMW850 is offline BMW850  Netherlands
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Quote:
However lets carry your mods a little further,,by putting in a seperate front end supply and then driving the output stages,,Then you,ll really hear a difference.
If we create a better amplifier this way, why than a new board with 4 trannies?
Patrick is it not better to create a new structure like Evette defines?

I'm going to build a new Dx Blame MKIII-Hx only if I definitely know that it gives an improvement.

Regards,
Rudy
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Old 23rd February 2012, 12:57 PM   #1038
a.wayne is offline a.wayne  United States
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Originally Posted by meanman1964 View Post
A new design with 4 pair output trannies and if you are looking very good you see something else.This is a try out version
Looking good meanman , since only 8 outputs can you add a bit more spacing between outputs for better temp spread .....
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Old 23rd February 2012, 03:15 PM   #1039
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Rudi,
Regarding the quote take a look at my example then you'll notice it's done.
The reason for using 4 pair trannies is to reduce board size a request from Vigier.
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Old 23rd February 2012, 03:31 PM   #1040
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So Now start a group buy? evette
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