NEW Aleph-X calculation sheet: AXE-1 - diyAudio
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Old 30th January 2004, 10:50 AM   #1
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Lightbulb NEW Aleph-X calculation sheet: AXE-1

Hello all,

since there seems to be a lot of confusion wich version of berekening....is right Hugo (Netlist) convinced me to make a new one and was so nice to put in some links and give some comment on how to improve upon the previous versions. Thanks for this!!

The new one is called AlephXEvaluationsheet1 (AXE-1) and is a normal excel file.
I put some comments in (just hold your mouse on the cell you want to be explained and then youŽll see the comment)

To make thing a bit nicer I also attached my Juntion TempCalculation at the bottom (also with nice explanations ) so now there will never be any more questions like:

Are these big enough, how many fets, what source resistors, etc. etc. etc..........

Comments or question are welcome but please look at it for longer than 5 minutes before you post

William
Attached Files
File Type: zip axe-1.zip (13.2 KB, 2391 views)
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Old 30th January 2004, 10:58 AM   #2
Taco is offline Taco  Netherlands
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Very nice . It's a shame my Aleph-X is finished .
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Old 30th January 2004, 11:12 AM   #3
wijgers is offline wijgers  Netherlands
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Very very nice,

This helps a lot. Also a bit in understandig whats happening in the circuit.

Great Job William!!!!!!

Nils
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Old 30th January 2004, 11:46 AM   #4
Prune is offline Prune  Canada
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Thanks so much!

By the way, I want to ask if these also apply to the PCB version.
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Old 30th January 2004, 12:12 PM   #5
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Fantastic job William!!!
Very easy to handle and helps a lot not only to get things right but to better understand what`s going on!!
In particular I like the graph of output power versus load impedance - very useful!
Thanks very much!!

(hopefully one day I`ll learn also how to use Excel to make such nice things like this)
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Old 30th January 2004, 04:02 PM   #6
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William,

Quite a good job, thanks.



Alain.
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Old 30th January 2004, 04:13 PM   #7
Netlist is offline Netlist  Belgium
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If all goes well, all previous links including the WIKI will be updated with this "Penultimate" version. No more confusion. Thanks to AudioFreak for that.

/Hugo
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Old 30th January 2004, 04:41 PM   #8
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Great Job William,

I know this must have taken some time to get everything right.
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Old 30th January 2004, 04:50 PM   #9
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Awesome worksheet William!

Warning.... dumb question Alert....

How come the X-Aleph's output drops when the speaker load impedance drops? Many Amp spec sheets have double the power rating for 4 Ohms when compared to 8 Ohms.

Thank you,

-David
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Old 30th January 2004, 04:52 PM   #10
tiroth is offline tiroth  United States
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It's a class A amp, so your current can never exceed the bias current (at least with AC current gain <=50%).
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