Is the NE5532N Dual Opamp any good? - Page 3 - diyAudio
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Old 18th December 2002, 11:17 AM   #21
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thanks for all of the valuable answers. I will expirament, I 2134 and 2603's here and I have some ad8620's on the way. I will install a socket, and expirament with coupling capacitors.

-Paul
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Old 18th December 2002, 12:13 PM   #22
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Default I hate experimenting with opamps

well, not really, I do it all the time, but it is a royal PITA to unsolder through-hole devices, and sockets just lead to sub-par results<p> Here's a tip -- use the "dead-bug" methodology. Mount the device on its back on the reverse side of the board. Bend the pins backwards to fit the traces and solder. I first saw the technique described in an application note from Analog Devices. It's a good technique for mounting the older switching chips since you can make the lead length very short.<p>For removing smt devices one technique I have seen is to use a small piece of wirewrap wire, slip it under the pins and heat. (Of course, you should be using needle-nose to hold the wire unless your fingers are very caloused!) You can gently pry smt chips off the board this way.
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Old 18th December 2002, 12:20 PM   #23
trwh is offline trwh  United Kingdom
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Jean-Paul,

"It is nice to discuss theory..."

Surely it is _essential_ to consider the theory before making any modifications.

"NE5532 is ancient and so is the sound it produces."

The design of this device may well be old, but it provides a very good sound at a low price. The opamps mentioned should represent a sonic upgrade - it may or may not be worthwhile in this situation.

Anyway, Paul, have fun and be careful,
Tim.
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Old 18th December 2002, 12:27 PM   #24
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Ok, maybe I wont use sockets.

-I have pretty good soldering skills, i guess this will put them to the test. I will just have to figure out a way to listen to it without having to put the whole thing back together again.

BTW, could any of you reccomend a good single disk player that has good modding ability that can be found for cheap?

-Paul Hilgeman
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Old 18th December 2002, 12:32 PM   #25
halojoy is offline halojoy  Sweden
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Quote:
Originally posted by PaulHilgeman
Ok, maybe I wont use sockets.

-I have pretty good soldering skills, i guess this will put them to the test. I will just have to figure out a way to listen to it without having to put the whole thing back together again.

BTW, could any of you reccomend a good single disk player that has good modding ability that can be found for cheap?

-Paul Hilgeman
you can use sockets
no way you hear a socket
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Old 18th December 2002, 12:50 PM   #26
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Default Halojoy - not quite correct

If you can't hear the difference, then why do manufacturers like AMP, Molex, Thomas & Betts go to such great lengths to manufacture sockets with gold plating, machined pins etc.<p>I realize that we are talking opamps on this thread, but I often work with ADC's and DAC's -- and know from experience that you want the device such as these to be as flat to the ground plane as possible, you want the ground planes for digital and analog to be separate, you want the decoupling cap lead length to be as short as possible, etc. <p>I wonder if you could hear the difference in a moving coil amp between a socketed and non-socketed device.
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Old 18th December 2002, 01:39 PM   #27
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No sockets for me anymore. Only for testing. When the choice is made I remove them and solder the best part for the purpose directly on the board.
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Old 18th December 2002, 01:50 PM   #28
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Quote:
Originally posted by halojoy

you can use sockets
no way you hear a socket
For high-speed amps sockets can mean the difference between stability or overshoot and/or oscillations. Believe me, that IS audible.

Jan Didden
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Old 18th December 2002, 04:25 PM   #29
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Default "you can use sockets, no way you hear a socket"

Halojoy, you are full of **it.

Eric.
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Old 18th December 2002, 04:41 PM   #30
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Quote:
Originally posted by jean-paul
NE5532 is ancient and so is the sound it produces
If I was being polite, that's how I'd put it. IME, it's such a hound it barks.
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