Building an AMP of a commecial piece but with top-notch parts - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 8th July 2009, 02:21 PM   #1
Oystein is offline Oystein  Netherlands
diyAudio Member
 
Join Date: Jun 2009
Default Building an AMP of a commecial piece but with top-notch parts

I could not find a similar discussion but this has been on my mind for some time:

I have a NAD amplifier incl. service manual + diagram.
Any commecial piece can be upgraded with better components because everybody knows that most manufacturers try to build their equipment as cheap as possible.

But when their desigh itself is quite good (the NAD amplifiers has some reputation) how much better will the amplifier be if I build an amplifier myself by their diagram but with the best parts available.
I could beef up the power supply, use all MKP capacitors were possible etc ....
Has anybody gone this route and what to expect ???

Thanks,

Oystein
  Reply With Quote
Old 8th July 2009, 02:42 PM   #2
Oystein is offline Oystein  Netherlands
diyAudio Member
 
Join Date: Jun 2009
I forgot to add that ofcourse I would build it dual mono ... and during the "design" some other structural "improvements" would be done
  Reply With Quote
Old 8th July 2009, 03:19 PM   #3
Nrik is offline Nrik  Denmark
diyAudio Member
 
Join Date: Feb 2005
Location: Copenhagen
I have made quite some modifcations of these types throughout the years.

If you switch capacitors in the signalpath from eletrolytic types to MKP/Polyeser/polypropylene you will get a clearer mid and high range.
If you beef up the supply you will get tighter bass and less colouration in the low mids.

All other attempts I seriously doubt will make a difference.
You should not switch any of the transistors, since their weaknesses are calculated into the design. And resistors, pcb wires etc makes very little difference.

If you like the NAD sound, buy one and modify it.
It is definitely the easiest and cheapest way to realize your goals.

But if you want to build something form scratch, then you should choose another schematic - and maybe aim a little higher than NAD. Check out the Symasym
This is easy to build, can be fed with super components if you like, and it should sound excellent.
__________________
STOP - Hammertime!
  Reply With Quote
Old 9th July 2009, 10:22 AM   #4
diyAudio Member
 
east electronics's Avatar
 
Join Date: Jan 2006
Location: Athens GREECE
Default in my company

we do many of things like that as you describe it

the truth lays in a few things

----if you read many but many threads on the forum you will notice small changes here and there that somebody did in a circuit and improoved one area fact #1

---- Then if you apply almost all of them in one amplifier then yes there is a hell of a lot of diference fact #2

---- Then most of comercial amplifiers have safety measures that are against sound quality and freedom removing or changing some of them alters the safety limits of the amp but improoves the sound serious fact#3


after all the above the choises are yours

----A ) is there really a point to do such mods ????

there is as long as you can hear the diference and avaluate the changes with numbers, scopes,gens ,and so on

----B) this might not be a costy job but will consume time beyond your imagination ( especially if you go "looking" for things ....if you know exactly what to do it will be much easier )

finally this is all up to you ....your ears and your time
__________________
SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Building some DIY interconnects little help sourcing parts? Dougie085 Everything Else 17 18th March 2008 02:23 AM
Building a headphone amp from parts Smokehouse Bob Headphone Systems 13 13th August 2007 03:26 PM
building a sonotube from the parts from a 12 inch partsexpress sub michelevit Subwoofers 9 4th August 2006 04:14 AM
building firstwatt f1 - questions on parts choariwap Pass Labs 24 20th June 2006 12:55 PM
Building a table from Linn parts sleepy Analogue Source 11 8th June 2003 08:02 PM


New To Site? Need Help?

All times are GMT. The time now is 10:44 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2