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Old 14th June 2008, 04:16 AM   #371
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Well I got them wired up and I am really please with the performance.

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Old 14th June 2008, 05:47 AM   #372
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Default Re: Re: Great claas-A designed

Quote:
Originally posted by Nelson Pass


Of course. The F5 has more power, more current, more bandwidth,
more damping factor, higher input impedance, less distortion and less
noise.

The Aleph J has a 2nd harmonic character, and the F5 is 3rd harmonic.

How does that alter the perceived sound qualities of the individual amps?
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Old 14th June 2008, 11:04 AM   #373
Manu is offline Manu  Europe
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Quote:
Originally posted by jacco vermeulen

A second rescue option would to place the power amp on a nice piece of rock, with some room between them,
and thermally connect the two.
How to?
(Brinkmann's seems to simply stand with 4 feet on Granit platte)

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Old 14th June 2008, 01:30 PM   #374
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Hmm, what was it again ?
Oh yeah, if both the feet and granite have a very smooth surface, the weight of the power amp enables a moderate thermal resistance between both. =>Class AB ampy, kemo sabe Bwana ?

Drilling some holes in the tomb stone to shove a couple of bolts through , plus a dab of the familiar sun tan cream, would be smarter cookie for a Class A critter.

Last time i saw this amp in the nude was like 2 decades ago, pretty amazing l-t-c stretch for an audio product.
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Old 14th June 2008, 02:59 PM   #375
Magura is offline Magura  Denmark
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Hmm, tomb raiding anyone?


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Old 14th June 2008, 05:25 PM   #376
Manu is offline Manu  Europe
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Quote:
Originally posted by jacco vermeulen

Drilling some holes in the tomb stone to shove a couple of bolts through , plus a dab of the familiar sun tan cream, would be smarter cookie for a Class A critter.

Jacco san, do you mean without leaving some space between bottom plate of amp and tombstone for airflow?
Ou j'ai mal comprendo , comme d'hab.?

But if it works, that with the stone, I will give a try.
May be can ZM provide some old oily BQ
serbian stone for this purpose. As a bonus would be the smell of burned cevapis everytime I play music.
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Old 14th June 2008, 07:52 PM   #377
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Hang on, just how many of those "habitudes" have you got ?

No, there has to be a gap for airflow, which large round metal feet clear.
Stuff like granite or marble does not replace aluminium heatsinks, but it's a nice aesthetic emergency add-on.

(Excuser for the late reply, my belly was in need of grilled tuna steak at the sea front. My favorite place around the corner, i can even check at home to see if it's rush hour before heading over: 1984-1 + 1984-2 . Plus they have insane club and beach parties, me dansa the night away)

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Old 14th June 2008, 09:10 PM   #378
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Old 14th June 2008, 11:53 PM   #379
steenoe is offline steenoe  Denmark
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Quote:
Originally posted by DVBjunky
A question about heatsinks for Aleph J?

2 heatsink with size 300mm x 150mm x 80mm!
They will run steaming hot, indeed. 400mmx180mmx80mm is more appropriate. Dont try to calculate the minimum heatsink, it will surely be too small. Mind your fingers when touching them!! You will loose some skin on them..

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Old 15th June 2008, 01:20 PM   #380
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Aykman found some heatsinks:

2 pieces each with 225mm x 215mm x 75mm and is not black anoded (elox.).

Its strange - some DIY builder told me that thier Aleph J Heatsink are very very hot others say that they have only 50-60° Celsius of heat?

Mmmh.
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