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NAP-140 Clone Amp Kit on Ebay
NAP-140 Clone Amp Kit on Ebay
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Old Yesterday, 05:59 PM   #3781
huggygood is online now huggygood  France
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as long as I do, I will post the only known schema of the LFD.
if I have time, when I dismount the wreck, I will check if it matches
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Old Today, 02:28 AM   #3782
johnego is offline johnego  Indonesia
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Judging from the component values, I don't think the amp is worth fixing? The original Hitachi amp has a lot to improve upon but this one doesn't seem like one to me. If people prefer this to Naim, why not just build the Goldmund clone?
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Old Today, 07:11 AM   #3783
huggygood is online now huggygood  France
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for having listened to it for a few days at home, I do not understand that we can prefer an LFD to an old generation Naim.
I do not say it's bad, but not for me, it's not worth an old Naim.
the client also has a pleasure of listening with my Audio Innovation Alto .
however, I would be happy to assemble a Naim in this chassis.
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Old Today, 08:36 AM   #3784
Dave S is offline Dave S  United Kingdom
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Is that really an LFD schematic?
I thought they used the Hawksford error correction scheme in the output.
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Old Today, 10:40 AM   #3785
traderbam is online now traderbam  Europe
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Thatís the first time Iíve seen a Nait 5i schematic. I had to find photos of the pcb to be sure that was the true circuit. I wonder whether JV would have let this out the door. It breaks many of the old design rules. Itís almost like a new designer was hired who changed it all. Steve Sells?
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Old Today, 10:46 AM   #3786
traderbam is online now traderbam  Europe
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In the LFD schematic why is the NFB taken from the speaker side of L1?
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Old Today, 12:07 PM   #3787
Dave S is offline Dave S  United Kingdom
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And why is the zoble on the "wrong" side of the output fuse?
I would also suggest that the output inductor needs a damping resistor.
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Old Today, 04:14 PM   #3788
Ian Finch is offline Ian Finch  Australia
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Quote:
Originally Posted by traderbam View Post
.... It breaks many of the old design rules. It’s almost like a new designer was hired who changed it all...
Exactly. I think that's why the sound is much leaner and more or less bland compared to original models. Perhaps it was an engineering led protest against JV's little tweaks and touches that actually spiced up the SQ and established the brand in the first place. I believe that was also what kept the brand up there for decades - it certainly wasn't the prices or quirky connectors and lots of expensive little boxes and cables everywhere.

I think it's a great shame that reverting to standard design practices have virtually taken the brand with its unique sound and repositioned it in the mainstream of unremarkable audio products that we can take or leave depending the appearance, operating features and the appeal of the advertising pitch. Time will tell whether this conservative strategy does anything in the market place where newer generations of customers have the option to choose whether the products are worth the price ticket and still have the "cool brand" factor.
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