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#1 |
diyAudio Member
Join Date: Oct 2004
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Are the 4558 and TL072 interchangeable? I see a lot of people replace one with the other in their build reports but i just want to make sure.
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#2 | |
diyAudio Member
Join Date: Mar 2002
Location: Aveiro-Portugal
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__________________
Jorge |
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#3 |
diyAudio Moderator
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Hi jsteigs,
The TL072 is a J-fet input op amp. This will normally give you lower noise but may not be suitable in all circuits. In audio chains it is normal to install TL072's or better. -Chris |
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#4 |
diyAudio Member
Join Date: Oct 2004
Location: Israel
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If your going to replace a 4558 that replace it with NE5532
and not a TL072... udi. |
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#5 |
diyAudio Moderator
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Not always, sometimes TL072 is better, sometimes NE5532 is better. They are many other opamps that may better suit a particular circuit. Price can be factor as well.
-Chris |
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#6 |
diyAudio Member
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Both TL072 and 4558 are considered sucky parts. Don't
waste your time, money or ears on them.
__________________
bel |
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#7 |
diyAudio Moderator
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In a pure world, yes and maybe. NE5532 sounds okay. It strongly depends on what you are replacing the parts in. If it had 4558's, I doubt it rates spending $10.00 or more each on op amps when these maligned op amps (TL072, NE5532) would bring a large improvement.
You would be shocked to see what your audio signal goes through in a studio. Sometimes an NE5532 is the best thing in the chain. The most common interconnect is Beldin wire. Older consoles are chock full of old electrolytics (new if you are lucky) and older transistor designs. I'm thinking of old Neve and MCI boards. These are prized by some for their sound. Yes, tube and transistor outboard gear. Bucket brigade echo boxes, or if you're real lucky, an older tape loop job. ![]() The newer boards like the SSL may be all digital. 'nough said. Then we compress it. Compression probably happened early on actually ![]() Now, there are some that think op amps are a waste of time & money. Everyone has a point of reference, and the truth is often ugly. -Chris |
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#8 | |
diyAudio Member
Join Date: Oct 2004
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Quote:
anyways, thanks for all the help every one. I know that these two opamps aren't so great, its just that i can get the 4558s very cheaply here in japan. |
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#9 |
diyAudio Member
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I replaced the 4558's in my cheaper Sony 50+1 disc changer (CDP-CX50) with TL082's,figured it couldn't hurt.
I actually noticed a bit "tighter/faster" bass response,and the treble seemed a bit better too.At first,It seemed to affect the midrange in a strange way,or maybe it was just my ears/brain adjusting? I wasn't sure if I liked it at first,but it seems okay,since the 82's are still in there. ![]() I also added small bypass caps on all the filter caps for each rail,and added a couple Sanyo Os-Con's to bump up the capacitance a tad..sounds pretty good for a cheaper player....Still havn't removed the muting x-istors yet either..I plan to replace them with a small relay. ![]() |
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#10 |
diyAudio Moderator Emeritus
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Does anyone knows what is the dual opamp (like NE5532) that uses folded cascode topology?
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Thread | Thread Starter | Forum | Replies | Last Post |
by what to replace the TL072? | seb83 | Analog Line Level | 13 | 1st January 2012 06:44 PM |
Upgrading From 4558 To OPA627 Is Expensive! | dantwomey | Digital Source | 6 | 26th December 2006 03:04 PM |
TL072 vs. 4560? | kubeek | Parts | 8 | 14th July 2006 08:42 PM |
4558 replacement with opa627's | ljk11 | Digital Source | 2 | 25th December 2005 07:52 PM |
TL072 replacement | Smiffy | Digital Source | 1 | 26th October 2003 10:39 AM |
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