Naim NAP90 amp schematics...

[DarkHorse]

Hi,DIYer:
I know naim nap90 is the most smaller amp in the NAP series...
I very interesting in it's schematics,seaching for a long time but could find nothings...
so,I need you help!if you have NAP90 or NAP110's schematics,please post and show it to me..
thank you so much!
WINCO

here is nap135's inner topology:

 

[kASD]

Hi buddy

Hi darkhorse

I really like your ID.

Here is a schematic of Naim135 amplifiers, hope you find it helpful

Regards
kanwar

 

[pete.a]

Expensive box

That's one reason why i never got hooked by the marketing hype of naim equipment. As good as it is you just end up with a very expensive box ! There's better and cheaper equipment out there and they use Audio Mosfets....

I once met the late Julian ( Mr Naim himself ) at a hifi show in London around 1987 when i was in my late teen's. He was an inspiring person, had time for everone . Verygood at marketing as i remember....


Just my 2 cent's

 

[DarkHorse]

Re: Hi buddy

Hi darkhorse

I really like your ID.

Here is a schematic of Naim135 amplifiers, hope you find it helpful

Regards
kanwar

ah,Yes!both are good horse!
thank you for your help!
I don't have NAP135's schematics before...
the nap90 or nap110 maybe are too old and hard to find...???

thanks Workhorse again!
regards!
WINCO

here is NAIM NAP140's schematics:


:edit: Link to copyright graphic removed.

 

[Upupa Epops]

Manytimes I had read here about damaging impact of capacitor in signal path. People say, that acceptable are only PP types. Now I see here on this position bipolar elyts. Naim is famous firm, with many fans. Something is wrong .

 

[pinkmouse]

Please don't post copyright information on the board. You can link to the original site, but don't cut and paste to posts here please.

 

[analog_sa]

Naim is famous firm, with many fans. Something is wrong

I've reached the same conclusion more than 20 years ago. Something is wrong with the fans' hearing ot they simply don't care about the finer aspects and are more impressed with the big picture. Btw, the coupling caps are tantalums!

 

[DarkHorse]

Please don't post copyright information on the board. You can link to the original site, but don't cut and paste to posts here please.

OK,pinkmouse:

I don't know the picture is protected by copyright!sorry to what I have done!
here is naim nap140' schematics link:
http://www.cndiyclub.com/bbs/dispbbs.asp?boardID=3&replyID=17321&ID=41&skin=1

 

[tmblack]

The NAIM 135 sure is unimpressive. No emitter degenerating resistors on the LTP, no complementary output transistors, .22 resistor instead of coil, risetime capacitors, ugh.

I've seen better amateur designs.

Tom

 

[tmblack]

I'd like to see the NAP250 schematics?

Thanks

Tom

 

[DarkHorse]

The NAIM 135 sure is unimpressive. No emitter degenerating resistors on the LTP, no complementary output transistors, .22 resistor instead of coil, risetime capacitors, ugh.

I've seen better amateur designs.

Tom

hi ,Mr.Tom:
many famous amplifier's circuit is so classical topology...and something isn't "HI-FI" from today's modern conception.
the biggest impression to me is QUAD405,I really hate it's circuit
toppology,using many un"HI-FI" things...but it's sound is so humanistic(flesh and blood),...I am so admire QUAD405's designer,they let machine recur the scene and feeling...
upon the word is why I am interested in the classic amp circuit,once you own the machine to hear the song "yesterday once more",I think you will enmeshed the times of the song!

regards
WINCO

 

[DarkHorse]

I'd like to see the NAP250 schematics?

Thanks

Tom

OK!here is :
http://www.cndiyclub.com/bbs/dispbbs.asp?boardID=3&replyID=19360&ID=489&skin=1

 

[DarkHorse]

here is the nap90 amp's inner topology:

 

[pinkmouse]

Thanks Darkhorse

The rule is simple, if an image shows a Copyright or C mark anywhere, then diyAudio could get closed down if that image is shown without the authors permission, so we have to remove it.

 

[DarkHorse]

Thanks Darkhorse

The rule is simple, if an image shows a Copyright or C mark anywhere, then diyAudio could get closed down if that image is shown without the authors permission, so we have to remove it.

that's alright!

I don't know the nap90 schematics where is,I am afraid that the schematics have been lost!
from the outlook of the naim nap90,so simple structure...

 

[tmblack]

Hello Darkhorse,

Yes old amps make sound like we first heard them. Carpenters on vinyl sure bring back those old memories.

They made the recordings too compressed and smooth back then, maybe to compensate for the grain in those amps.

And thanks for the schematics.

Tom

 

[DarkHorse]

nobody can help me!!!
I have several picture of NAP90's pcb,need to "DIY" now...
at least,I can got it's circuit topology...

 

[Upupa Epops]

Are you searching schematic ? It will be quite the same as older ones - only with output transistors in TO 220 case .

 

[protos]

I don't understand the big deal with the NAP 90 schematics.If you can find the 110, 140, 180 it should be very close because it is the same circuit with higher voltages and power output.The 250 has regulated PS.You could also get some pretty good Naim clone kits from Avondale audio.
However having owned Naim 110,180,250 I still prefer a good gainclone over them, a Pass Aleph design or a good valve set amp.

 

[Paul Ranson]

The 'NAP140' circuit on the first Chinese link is actually the Avondale Audio NCC200. FWIW.

http://www.users.zetnet.co.uk/avondale/

Why can't you trace out the NAP90 circuit? If you want to 'clone' then it's not the right place to start. Try Avondale or the Neil McBride clones, http://www.neilmcbride.co.uk/jknamps.html

Paul