Aleph J for Universal Mounting Spec - Page 8 - diyAudio
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Old 1st January 2013, 09:26 PM   #71
GKU is offline GKU  Switzerland
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I totally agree with 6L6 to limit options which are not directly related to the base Aleph J.
He is right, the base amp is an excellend sounding device, but depends much on the quality and matching of the active - and some passive - devices as JFET's, MOSFET's and caps. As we don't have the choice to select the devices with the right parameters out of a big stock as Nelson has the opportunity, we must build in the posibility for some tweeking but not much more.
But putting too much options into the new design increase the risk of wrong or insufficient tweeking.
Thus keep it simple as possible to allow the majority of DIYer to build and tweek this amp in relation to their possibilities.
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Old 1st January 2013, 10:12 PM   #72
6L6 is offline 6L6  United States
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Quote:
Originally Posted by GKU View Post
But putting too much options into the new design increase the risk of wrong or insufficient tweaking.
This is my conundrum - as the board sits right now, the standard build is going to use 4 jumpers, and likely 2 resistors instead of pots.

That much flexibility is going to cause some confusion. Of course, the quality of the build guide will hopefully explain what all the extra options do and why you may need/want to use them...

Luckily for all, a very well illustrated build guide is quite simple to do on a webpage, or Forum, and/or YouTube.

As Nelson said this year at Burning Amp -

"Keep Calm and Build Amps"
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Old 1st January 2013, 10:40 PM   #73
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I can understand that perspective. The parallel jfets may be good if only GR parts are available.
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Old 1st January 2013, 10:47 PM   #74
6L6 is offline 6L6  United States
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Heck, the J74 in general are getting difficult.

I, like everybody else interested in Pass designs, wish that Linear would get their replacement in production..

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Old 2nd January 2013, 09:42 PM   #75
GKU is offline GKU  Switzerland
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Didiet/6L6,

Could you please add a bias C also parallel to C2?
Thanks
Gerd
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Old 6th January 2013, 02:02 AM   #76
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I would be interested in a pair of boards.

Giulio
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Old 6th January 2013, 02:12 AM   #77
PKI is offline PKI  United States
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Oh, I would love to have a stereo set(minimum).

What about 3pairs of transistors? ZM told me that it is not a thing to worry about, though :-).
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Old 6th January 2013, 05:38 AM   #78
Guiness is offline Guiness  United States
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I am in for a set....
Good work guys
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Old 15th January 2013, 06:01 PM   #79
abc4230 is offline abc4230  Germany
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I am in for one stereo set
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Old 16th January 2013, 02:00 AM   #80
6L6 is offline 6L6  United States
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Can anybody convert an Eagle drawing/file to Gerber 274x?
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