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The Opamp thread
Sep 21, 2014 at 7:57 AM Post #4,757 of 7,383
i am trying to make a cmoy like thingie using ne5532 (thats all i have at hand in duals at present, might replace later). power right now is from 7815/7915. I am using r2=27k, r3=33k, r4=150k. Load is a 330R resistor. Ckt is here. Cap is presently 0.1uf for testing, will increase it later. ckt is on breadboard.I am giving a single channel an output from a sig gen. Similar ckt worked fine in ltspice.
 
Output pic is attached. Blue is input and red is output. Could someone please tell me why is it coming like this and how do i fix this.
 

 
Sep 29, 2014 at 12:38 AM Post #4,758 of 7,383
Guys, anyone have experience with the Burson supreme opamps? (link)
 
Still deciding if i mod my existing music hall dac or sell it and upgrade. My preference always been with discrete designs. 
 
Sep 30, 2014 at 2:13 AM Post #4,760 of 7,383
I ordered some lme49990s a few days ago. I'm excited about them arriving soon, and the specifications are impressive, except for the fact that nowhere in the datasheets for the 49990 (in comparison to the 49860s) were there any crosstalk specs. I found that little odd, unless I don't have the full datasheets. Links I used are below.
 
http://www.ti.com/lit/ds/symlink/lme49860.pdf
 
http://www.ti.com/lit/ds/symlink/lme49990.pdf
 
Sep 30, 2014 at 3:06 AM Post #4,761 of 7,383
strangelove424 said:
  I ordered some lme49990s a few days ago. I'm excited about them arriving soon, and the specifications are impressive, except for the fact that nowhere in the datasheets for the 49990 (in comparison to the 49860s) were there any crosstalk specs. I found that little odd, unless I don't have the full datasheets. Links I used are below.
 
http://www.ti.com/lit/ds/symlink/lme49860.pdf
 
http://www.ti.com/lit/ds/symlink/lme49990.pdf
Click to expand...

One is a dual opamp, the other single... 
wink.gif

 
Oct 10, 2014 at 6:29 AM Post #4,767 of 7,383
p701 said:
 
wigglepuff said:
  what's the difference between muses 01 and 02? I dont really understand individual opamps, but do these 2 differ on how they sound when put into use in an amp?
Click to expand...

 

Specs. The other is J-FET and the other Bipolar.
Yes, sure they can differ in sound if you have enough imagination.
Click to expand...


lol ok so they sound identical, just that thier hardware implementation differs.
 
Oct 10, 2014 at 7:07 AM Post #4,768 of 7,383
wigglepuff said:
  lol ok so they sound identical, just that thier hardware implementation differs.
Click to expand...

 
As I have plenty of imagination. I do not find them to sound identical. lol The J-FET MUSES01 is a bit brighter and tighter in the top end whereas the Bipolar MUSES02 is a bit warmer.
 
Per zilch0md,  "The MUSES02's biggest advantage over the MUSES01, at least in terms of specifications, is that the ~02 offers 50mA per channel instead of 25mA from the ~01, and the ~02 can get by with a supply voltage of 3.5V vs. 9V."
 
http://www.head-fi.org/t/432749/the-opamp-thread/4515#post_9973309
 
Oct 10, 2014 at 10:29 AM Post #4,770 of 7,383
gibosi said:
   
As I have plenty of imagination. I do not find them to sound identical. lol The J-FET MUSES01 is a bit brighter and tighter in the top end whereas the Bipolar MUSES02 is a bit warmer.
 
Per zilch0md,  "The MUSES02's biggest advantage over the MUSES01, at least in terms of specifications, is that the ~02 offers 50mA per channel instead of 25mA from the ~01, and the ~02 can get by with a supply voltage of 3.5V vs. 9V."
 
http://www.head-fi.org/t/432749/the-opamp-thread/4515#post_9973309
Click to expand...


lol ok is the bright 01 and the warm 02.
 
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