Signetics 5534 for Auditronics 110b and A 30.

Are you building something? Share your resources with the locals - for more in depth D.I.Y. head to The Lab

Moderators: rick, Mark Bassett

Signetics 5534 for Auditronics 110b and A 30.

Postby Paul Maybury » Tue Mar 24, 2015 5:36 pm

Hi, has anyone had any experience of these parts that are now being made , or at least sold from China?
Like this,
http://www.ebay.com/itm/10PCS-OP-AMP-IC ... 3a74a95661
Or this
http://www.ebay.com/itm/1PCS-Signetics- ... 4adab8174c
I bought some of the Auditronics modules that were going recently here on Turtlerock and there are a mix of different brands of 5534s in them. Also, the A 30 output cards have 741s in them and I would like to replace them with 5534s.
Now, I'm not sure I buy into the theory that Signetics 5534s are the best ( I have no A/B test experience of this to know for sure), but I do want to get all the channels to match, and replace the 741s on the output cards.
So, should I just buy a new tube of TI 5534s and replace all the chips with them? Or track down Signetics NOS?
Any suggestions or thoughts welcome.
Cheers,
Paul Maybury
Frequent Contributor
Frequent Contributor
 
Posts: 680
Joined: Tue Nov 17, 2009 3:07 pm
Location: Melbourne

Re: Signetics 5534 for Auditronics 110b and A 30.

Postby rob » Tue Mar 24, 2015 9:56 pm

I'd just get TI 5534A
User avatar
rob
TRM Endorsed
TRM Endorsed
 
Posts: 999
Joined: Tue May 10, 2005 9:16 pm
Location: Adelaide

Re: Signetics 5534 for Auditronics 110b and A 30.

Postby audioio » Tue Mar 24, 2015 10:40 pm

Funny. I bought two 501 modules a while back, but not together. The second one was advertised as having Signetics as if that was a big thing. As I haven't racked them yet I don't know, but I suppose any modern 5534 might be better than the originals that were in them.
David Rodger
audioio
Regular Contributor
Regular Contributor
 
Posts: 417
Joined: Wed Jul 28, 2010 4:05 pm

Re: Signetics 5534 for Auditronics 110b and A 30.

Postby Sammas » Wed Mar 25, 2015 10:05 am

My MCI JH600 came loaded with Signetics 5534's and 5532's. I have encountered all the comments about signetic's apparent sonic superiority, but I can't say I really notice a difference between an all signetic's loaded channel and one with a very large chunk replaced by modern TI equivalents.

If there is a difference, it is minuscule compared to other changes that have been made (replacing DBX 202 driven VCA faders with analogue ones, replacing 5534 summing amps with 990c's, recapping it).
Nath Turn bull.
Sammas
Frequent Contributor
Frequent Contributor
 
Posts: 972
Joined: Sat May 06, 2006 5:30 pm

Re: Signetics 5534 for Auditronics 110b and A 30.

Postby Paul Maybury » Wed Mar 25, 2015 11:20 am

Thanks everyone,I'll go with the TI's. I think I already have some around here somewhere...
One of the 110 modules has Signetics, guess I'll ebay those chips for a stupid vintage price....
Just kidding.
Cheers, Paul
Paul Maybury
Frequent Contributor
Frequent Contributor
 
Posts: 680
Joined: Tue Nov 17, 2009 3:07 pm
Location: Melbourne

Re: Signetics 5534 for Auditronics 110b and A 30.

Postby Analogaudioguy » Wed Mar 25, 2015 9:08 pm

The Sig' s do measure and sound better to my ears.
Bruce Maddocks
Old time audio dude
OST Mastering
Analogaudioguy
Registered User
Registered User
 
Posts: 62
Joined: Wed Apr 30, 2014 10:02 am

Re: Signetics 5534 for Auditronics 110b and A 30.

Postby Paul Maybury » Thu Mar 26, 2015 12:19 pm

They actually measure better? Better than TI's? Now that is interesting.
Cheers,
Paul
Paul Maybury
Frequent Contributor
Frequent Contributor
 
Posts: 680
Joined: Tue Nov 17, 2009 3:07 pm
Location: Melbourne

Re: Signetics 5534 for Auditronics 110b and A 30.

Postby zenelectro » Fri Apr 03, 2015 11:23 am

Paul Maybury wrote:Hi, has anyone had any experience of these parts that are now being made , or at least sold from China?
Like this,
http://www.ebay.com/itm/10PCS-OP-AMP-IC ... 3a74a95661
Or this
http://www.ebay.com/itm/1PCS-Signetics- ... 4adab8174c
I bought some of the Auditronics modules that were going recently here on Turtlerock and there are a mix of different brands of 5534s in them. Also, the A 30 output cards have 741s in them and I would like to replace them with 5534s.
Now, I'm not sure I buy into the theory that Signetics 5534s are the best ( I have no A/B test experience of this to know for sure), but I do want to get all the channels to match, and replace the 741s on the output cards.
So, should I just buy a new tube of TI 5534s and replace all the chips with them? Or track down Signetics NOS?
Any suggestions or thoughts welcome.
Cheers,


As mentioned alsewhere, the TI 5534 is fine, they will be a significant upgrade to the 741.
The 5534 needs a 22pF compenasation cap across pins 5 / 8 for UG operation.

You can also go for one of the many newer higher performance opamps that are lower distortion than 5534 and
also unity gain stable. Most are only available in SMT packages so you will need to use SMT to DIP adaptors which
for non techs can be a PITA.

WRT opamp sound and distortion this is worth a read-

http://www.sg-acoustics.ch/analogue_aud ... ortion.pdf

For the non technical, it shows that the implementation makes a big difference - in most cases. A very big distortion contributor is common mode and that is mainly affected by the surrounding circuit design.

cheers
Terry Demol
T & L Technical P/L
Audio Design & Service
zenelectro
Registered User
Registered User
 
Posts: 59
Joined: Mon Jul 19, 2010 1:38 am
Location: Sydney


Return to D.I.Y.

Who is online

Users browsing this forum: No registered users and 2 guests


cron