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Old 22nd May 2012, 06:10 PM   #381
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I m far from measuring yet. Just doing my homework collecting components and tools
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Old 22nd May 2012, 06:17 PM   #382
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I am sure all new F5 builders will find it to be an easy build. Quite amazing given the level of performance that is achieved. If you can solder and place numbers appropriately, your good to go. Perhaps before fets are distributed, we can start a checklist thread where more experienced builders can do a step by step to firing it up.
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Old 23rd May 2012, 02:46 AM   #383
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Quote:
Originally Posted by AudioSan View Post
have not tryed them. but they are not driving dual rectifiers? are they?
i think they are singel rectifier and commond ground.
Hi AudioSan,

I'm not sure what you meant but it contains dual bridge rectifiers in either TO220 or TO3P packages.
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Old 23rd May 2012, 02:54 AM   #384
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Quote:
Originally Posted by labjr View Post
No diode heatsinks?

Quote:
Originally Posted by compressit View Post
.

This is the issue.
For those of us who think our discrete devices have some impact on overall sound.


The Diode section was designed to be snapped off the whole board and have the diodes installed on a heatsink (with individual insulators of course).
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Old 23rd May 2012, 05:02 PM   #385
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Hi Nelson

Could you please explain further this effect (ie sliding bias), with a hypothetical example.


'What if you remove the Source resistance altogether?
First off, you get the 44 amps. In addition, with Fets you get an output stage
that will deliver more Class A power at a given bias figure due to the square
law character of the Fets
."


Moreover, can this technique of parrelleling diodes with source resistors reduce the effects of crossover distortion on regular source follower output stages (eg BA2 output)

Appologies to everyone if this has been discussed in detail. I am new here

Last edited by Melon Head; 23rd May 2012 at 05:11 PM.
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Old 23rd May 2012, 05:30 PM   #386
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The slight of hand, I believe, is that he means more Class A/B power. If you listen carefully, you can here the Klunk.
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Old 23rd May 2012, 05:44 PM   #387
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Quote:
Originally Posted by buzzforb View Post
The slight of hand, I believe, is that he means more Class A/B power. If you listen carefully, you can here the Klunk.
Yes I tend to agree with that assumption however when he starts talking about square law of the mosfets (and not just reduced voltage drop across the "shorted" source resistor) I am thinking there could be some hidden treasures here.
Nelson often puts in hidden treasures of information in his articles that often go unnoticed.

Last edited by Melon Head; 23rd May 2012 at 05:46 PM.
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Old 23rd May 2012, 05:52 PM   #388
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final outcome of peeling all layers of Papa's amplifier Onion articles , can be just one - you'll end up without any amplifier , sitting by some big water
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Old 23rd May 2012, 05:59 PM   #389
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Ok
I will keep hush, from now on.
Need to spend more time building and sleeping (4am here) and less time thinking.
Thinking is no good when you are running on one and half brain cells.

Last edited by Melon Head; 23rd May 2012 at 06:01 PM.
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Old 23rd May 2012, 06:23 PM   #390
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I have no cells

I'm the sole one

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