The NE5532 is far superior to the TLO72 in just about every way for audio use, only real exception being the 5532s' relatively large input current spec. The TLO72 has a very limited ability to drive a load, it's prone to latch up if the inputs are overloaded, and has many other "features" that make it undesirable for audio in my opinion.
Mike
Mike
Peavey uses a lot of NJM4560 which sounds good IMHO and has more drive current than the first two. NJM4580 is used by some pro gear suppliers. I'm using MC33078 which are quieter than the industry workhorse 4558's that I replaced. LM4562 is the latest hot item, in the parts bin but not experimented with yet. All these fast slew rate amplfiers require local ceramic disk power supply decoupling, and a 22-47 pf capacitor around the feedback resistor, to keep them from oscillating. I know because the 33078's were oscillating until I did all that.
LM4562. After many hours of critical listening tests I have put this as my personal favourite.
There are many that are good and many that excel in specific areas. Also "good" can mean different things. For example you could run half a dozen TL072's for the current one NE5532 or LM4562 draws. So that's good
For your circuit, a 5532 or 4562 is about as good as it gets. You probably don't need any compensation caps if your layout is good. As ever, test on a scope and look at the transient and squarewave response. A simple RC input filter might be a good idea too. particularly as these are bjt opamps and consequently can be affected by hf hash at the input.
AndrewT
thanks for the advices what do you think of this circut now ?
Mooly
thats why I ask for your opinion , I want to build a circut with IC socket and to put there recommened op amp .
I will start with the NE5532 and buy another opamp one soon .
I think I will give up the tL072 .
thanks for the advices what do you think of this circut now ?
Mooly
thats why I ask for your opinion , I want to build a circut with IC socket and to put there recommened op amp .
I will start with the NE5532 and buy another opamp one soon .
I think I will give up the tL072 .
Attachments
Is this an audio processing circuit?
The input is F-3dB @ 0.015Hz
The output is F-3dB @ 0.16Hz
Audio stops at ~ 20Hz.
Power amps deliver sufficient low bass with F-3dB ~ 1Hz to 4Hz.
Pre-amps set to one octave lower will deliver all the bass your system could ever reproduce.
Still no RF attenuation.
Still no HF decoupling.
R1 & 3 could be halved again, or even lower. What about 2k:510r?
The input is F-3dB @ 0.015Hz
The output is F-3dB @ 0.16Hz
Audio stops at ~ 20Hz.
Power amps deliver sufficient low bass with F-3dB ~ 1Hz to 4Hz.
Pre-amps set to one octave lower will deliver all the bass your system could ever reproduce.
Still no RF attenuation.
Still no HF decoupling.
R1 & 3 could be halved again, or even lower. What about 2k:510r?
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