Can i replace mc1458 with opa2134?

zyong88 · 27th September 2009, 02:26 AM

can i replace the ic mc1458 with opa2134 for better sound quality?

sangram · 27th September 2009, 08:33 AM

I've switched out opamps multiple times and almost always found an improvement. Fast opamps require some attention to decoupling, which circuits using cheap opamps may or may not have implemented. With that caveat, replacements are usually succesful - I've replaced NE5532 and 4580 with LM4562, and in another case 4588 with NE5532. It's a worthwhile improvement (to my ears).

ppa · 27th September 2009, 02:19 PM

yes, you can, but, in my opinion opa2604 is better than 2134 so I would want to council you the2604.

ClaveFremen · 27th September 2009, 02:37 PM

OPA2132 is better than OPA2134, much more 'liquid', refined, great bass and less noisy than OPA2604, IMHO.

bye

jaycee · 27th September 2009, 03:21 PM

Yes but you may need to add additional decoupling capacitors. Also it is possible the circuit will not be stable. Try it, but if you notice the opamp getting warm, it is oscillating and not suitable.

zyong88 · 28th September 2009, 03:16 AM

erm...
really really thanks for help!
i will go n try in these few day!

27th September 2009, 02:26 AM	#1
zyong88 diyAudio Member Join Date: Sep 2009	Can i replace mc1458 with opa2134? can i replace the ic mc1458 with opa2134 for better sound quality?

27th September 2009, 02:19 PM	#3
ppa diyAudio Member Join Date: Mar 2005 Location: Italy	yes, you can, but, in my opinion opa2604 is better than 2134 so I would want to council you the2604. __________________ PP

27th September 2009, 02:37 PM	#4
ClaveFremen diyAudio Member Join Date: May 2005 Location: Milan, Italy	OPA2132 is better than OPA2134, much more 'liquid', refined, great bass and less noisy than OPA2604, IMHO. bye __________________ Dario ClaveFremen "Bailando Salsa en el Sietch"

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27th September 2009, 08:33 AM	#2
sangram diyAudio Member Join Date: Sep 2002 Location: India	I've switched out opamps multiple times and almost always found an improvement. Fast opamps require some attention to decoupling, which circuits using cheap opamps may or may not have implemented. With that caveat, replacements are usually succesful - I've replaced NE5532 and 4580 with LM4562, and in another case 4588 with NE5532. It's a worthwhile improvement (to my ears).

27th September 2009, 03:21 PM	#5
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	Yes but you may need to add additional decoupling capacitors. Also it is possible the circuit will not be stable. Try it, but if you notice the opamp getting warm, it is oscillating and not suitable.

28th September 2009, 03:16 AM	#6
zyong88 diyAudio Member Join Date: Sep 2009	erm... really really thanks for help! i will go n try in these few day!

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