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Old 18th May 2005, 01:29 PM   #11
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Quote:
Originally posted by ashok


The difference in sound need not be due to the power transistors alone unless the rest of the circuitry , construction and parts type are absolutely identical.
Are the two amps identical in every other way ?
Cheers.
Hi ashok,

Sorry, I didn't mean to mislead.
No, the two amps are not identical. The S860 has a total of 12 MOSFETS and the PCR800 only 8. The S860 also has 1/4" inputs and the PCR800 RCA. The S860 is a little beefier I think and you may very well be right that other things have contributed to the sound more so than the MOSFET's. I was only sharing that the amp sounds very good and uses the Exicons. I would think if they were poor replacements that this would not be the case. If they weren't soldered in place on the Soundcraftsmen amps I would swap them out in the amps to see how much difference they really make, but that is more work than I am willing to do at this point. I should let folks with more electronic knowledge answer these questions. All I have are my ears and eyes. I have driven a pair of JBL 4425's, a pair of JBL 4411's, a pair of Yamaha NS1000's and a pair of Event 20/20's with these amps, and to my ears, the S860 is better sounding. One note though, the S860 is louder than the PCR800.

Here are my speakers
Click the image to open in full size.

Blessings, Terry
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Old 18th May 2005, 01:43 PM   #12
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I think you need even more speakers
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Old 20th May 2005, 12:30 AM   #13
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Guys,

Appreciate the insights

Koryusz, thanks for the offer but definately wanted the higher rated devices if I could find them.


Since starting this thread/looking for substitues, soundvalves has been offering matched hitachi 176/56's on ebay.
So I have taken the plunge.

The price was comparable with my expected landed cost for exicoms, and if the wife finds the bill I will hold fate accountable for my actions.


I don't expect that use of either product will contribute much in overall performance? (None that a simple lackey will notice).
As others have indicated there are many factors involved, layout PSU etc.
But having a low level understanding of fet output stages,
finding the spec'd devices as NOS is a good reason to jump in boots & all.


Now to start the fun stuff.


Finally
Can you ever have 2 many speakers? (assembled and working)

Thanks
Tony
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Old 21st May 2005, 03:52 AM   #14
Koryusz is offline Koryusz  Hong Kong
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no problem Tony.

Here are some pictures of my class A 100W amp using k405/J115
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Old 21st May 2005, 03:54 AM   #15
Koryusz is offline Koryusz  Hong Kong
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next picture, internal structure
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Old 21st May 2005, 04:00 AM   #16
Koryusz is offline Koryusz  Hong Kong
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K405/J115
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Old 21st May 2005, 04:02 AM   #17
Koryusz is offline Koryusz  Hong Kong
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power supply
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Old 10th March 2011, 01:30 PM   #18
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Default Sources for HAFLER J160 and K1560 subs. PLEASE!

Hey Group,
My HAFLER is in need of a J160 and after reading threads on Exicon nad Magnatek subs and trying to find sources, I am not only confused but running out of options. I found a BUZ900 but no match.
Can anybody recommend any subs to get it running again? I will probably replace both, in both channels knowing it will probably cost me a whole pocket full of sheckles.

Thanks



Jim
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Old 11th March 2011, 08:32 AM   #19
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i messed about with one pair of genuine hitachi j50/k135.
there rated at 100w but behave more like 150w+
i then tried out 10n20/10p20, big dissapointment, plus some slight instablity issues
I ended up using rensasas j50/k135, works ok, but cant be pushed like the TO3 versions.
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Old 11th March 2011, 12:18 PM   #20
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Quote:
Originally Posted by Henry8 View Post
I ended up using rensasas j50/k135, works ok, but cant be pushed like the TO3 versions.
oopps, i meant:-I ended up using rensasas j162/k1058, works ok, but cant be pushed like the TO3 versions j50/k135.
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