In my opinion NAD is one of a few companies that knows how to achieve great sound from cheap materials. I don’t know with ceramics caps, if it is the cheap green caps, I’m sure you cannot hear any difference if you replace it with first class MKP (or even MKT). Those caps are suitable for coupling capacitors (to ground) and in the DC rails near transistor pins. It is also very likely that the circuit has a zobel in the output, but there’s no need to put expensive cap here.
My NAD C320 uses massive PSU torroid and capacitance. The rectifiers are suspicious (because it’s cheap), but looking at the “complexity” of the regulator circuit as well as the complexity of the amplifier (multi stage amplification and feedback), I don’t think that replacing the rectifier worth the effort. In a simple circuit, component quality is more important to cover the drawback of a simple circuit. In a complex circuit, it is less so.
The HF section (of the tone control) uses cheap green caps, the LF section uses MKM. Isn’t that smart?
My NAD C320 uses massive PSU torroid and capacitance. The rectifiers are suspicious (because it’s cheap), but looking at the “complexity” of the regulator circuit as well as the complexity of the amplifier (multi stage amplification and feedback), I don’t think that replacing the rectifier worth the effort. In a simple circuit, component quality is more important to cover the drawback of a simple circuit. In a complex circuit, it is less so.
The HF section (of the tone control) uses cheap green caps, the LF section uses MKM. Isn’t that smart?
And I thought that by removing the circuits for impedance sensing (ISC) and clipping would improve the sound. I didn't really compare the result, but I didn't find any miracles.
And I'm building 3-stage class A driver for the transistors. I mean, upgrading the whole circuit!
And I'm building 3-stage class A driver for the transistors. I mean, upgrading the whole circuit!
Mark, the given link doesn´t work for me likewise.
This should work : http://steve.sky.net.ua/a_index.htm
Cheers
Jens
This should work : http://steve.sky.net.ua/a_index.htm
Cheers
Jens
Hi Jens - thanks for correcting it...joensd said:Mark, the given link doesn´t work for me likewise.
This should work : http://steve.sky.net.ua/a_index.htm
Cheers
Jens
Cheers,
Mark
The Nad 302...
Yes it is...the output stage is the same only the devices are more modern...
Regards
Thanx a lot, it is really the same topolgy as 3020 ??
Yes it is...the output stage is the same only the devices are more modern...
Regards
Re: The Nad 302...
And what are the more modern devices?
Tube_Dude said:
Yes it is...the output stage is the same only the devices are more modern...
Regards
And what are the more modern devices?
The post modern...
The originals in the 3020 are the metal TO3 , 2N3055...MJ2955....
The modern devices in the 302 are japonese plastic devices...i don't remember what they are...sorry!
And what are the more modern devices?
The originals in the 3020 are the metal TO3 , 2N3055...MJ2955....
The modern devices in the 302 are japonese plastic devices...i don't remember what they are...sorry!
NAD 302 Schematics
I would be very grateful if you could send me the circuit diagram.
My e-mail is sherdil@hotmail.com
Many thanks
I would be very grateful if you could send me the circuit diagram.
My e-mail is sherdil@hotmail.com
Many thanks
It would be gratefull if someone would send me the schematics too for nad 302
my email is aye2502@yahoo.com
thanks
my email is aye2502@yahoo.com
thanks
hi! I just bought a used 302.... i'm interested by the schematics too!
many thanks!!
remy_e@yahoo.com
Emmanuel
many thanks!!
remy_e@yahoo.com
Emmanuel
im sorry to dig up such an old thread but i would be great if i could get a copy of the manual!
thanks a million!
my email is artic_avenger@hotmail.com
thanks!
thanks a million!
my email is artic_avenger@hotmail.com
thanks!
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