Drop In Replacements - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

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 6th October 2013, 06:06 AM   #1
diyAudio Member
 
Join Date: Oct 2013
Default Drop In Replacements

Are there drop in* replacements / upgrades* for these opamps found in a Rotel RC-972 preamp?

1. AD712JN
2. OPA2604
3. NJM2114D
  Reply With Quote
Old 7th October 2013, 12:02 AM   #2
diyAudio Member
 
ticktock's Avatar
 
Join Date: Dec 2006
The Best Sounding DUAL opamps

Replace NE5532AN

Worth Replacing NE5532P with Signetics NE5532AN (or other)?

and lots more
__________________
SAY YES !!
Blaue Leuchtdioden machen blöd. (hb)
quod licet iovi, non licet bovi
  Reply With Quote
Old 7th October 2013, 09:46 PM   #3
diyAudio Member
 
Andersonix's Avatar
 
Join Date: Jan 2004
Location: Silicon Valley
Rule of thumb: replace jFet input type with same, and BJT with same.
  Reply With Quote
Old 15th October 2013, 03:04 PM   #4
macboy is offline macboy  Canada
diyAudio Member
 
Join Date: Oct 2003
Location: Ottawa, Canada
Quote:
Originally Posted by Andersonix View Post
Rule of thumb: replace jFet input type with same, and BJT with same.
100% agree! Most circuits optimized for one type will be very sub-optimal for the other.

The AD712 seems a little out of place (spec wise) in audio, but why not I suppose. The other two are already among the better audio grade op-amps available. Dropping in a replacement that is guaranteed to perform better is not possible, IMHO, without knowing the circuit it is going into. Post at least a partial schematic, then discussion can begin.
  Reply With Quote
Old 15th October 2013, 04:38 PM   #5
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Hi,

Rule of thumb :

You can hardly ever improve things substantially
with op-amp substitution unless the original is built
down to a price and is clearly very compromised.

I doubt the Rotel is the latter.

rgds, sreten.
__________________
There is nothing so practical as a really good theory - Ludwig Boltzmann
When your only tool is a hammer, every problem looks like a nail - Abraham Maslow

Last edited by sreten; 15th October 2013 at 04:46 PM.
  Reply With Quote
Old 15th October 2013, 05:49 PM   #6
diyAudio Member
 
KatieandDad's Avatar
 
Join Date: Nov 2011
Location: UK
Default RC-972 schematic

Here's the schematic to give you something to chomp on.
Attached Images
File Type: jpg RC-972.JPG (238.3 KB, 43 views)
Attached Files
File Type: pdf RC-972-TM[1].pdf (964.3 KB, 10 views)
  Reply With Quote
Old 15th October 2013, 07:18 PM   #7
diyAudio Member
 
KatieandDad's Avatar
 
Join Date: Nov 2011
Location: UK
With the digital switching at the inputs, I don't imagine you will gain very much with playing with expensive op-amps after it.
  Reply With Quote
Old 15th October 2013, 11:44 PM   #8
diyAudio Member
 
Andersonix's Avatar
 
Join Date: Jan 2004
Location: Silicon Valley
Quote:
Originally Posted by sreten View Post
Hi,

Rule of thumb :

You can hardly ever improve things substantially
with op-amp substitution unless the original is built
down to a price and is clearly very compromised.

I doubt the Rotel is the latter.

rgds, sreten.
By your rule of thumb, the following gear of mine was "clearly very compromised": Oppo 980, Marantz SR4200, and B&K AVP1000. Or maybe I just got lucky again and again....
  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
replacements doktor Solid State 8 10th March 2008 12:11 PM
IRFP450 Replacements? hernanstafe Solid State 1 14th March 2007 02:27 AM
best sounding 78XX/79XX drop in Regulator Replacements? ThorstenL Digital Source 66 18th October 2006 05:59 AM
5532 Or 833 Drop In Replacements ? mrfeedback Solid State 0 2nd July 2002 02:55 AM


New To Site? Need Help?

All times are GMT. The time now is 07:09 PM.


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