Issues when replacing tl072 high pass filter with ne5532

[Audioguru]

ne5532 versus tl072

A 2.5 inch "woofer" is a joke.
A woofer should be a minimum of 8".

My pc speakers use a 3" drivers with a big magnets and they go down to about 100Hz so more than two octaves of bass frequencies are missing.

A TDA1554 car radio amplifier IC has fairly high distortion and low output power.

 

[pauloynski]

Re: ne5532 versus tl072

I agree that the TDA1554 is not a very good choice and surely not much better than the TDA2030. In fact, I suspect the actual amplifier (using the TDA2030) may have some problem and can still be used if the problem is solved.
Audioguru: take a good look at what has been made with respect to the TWQT and DTWQT enclosures and, may be, you change your opinion about that (or not). A very small speaker in a TWQT can reach a 50Hz bass response, it depends on the cabinet size. The link I´ve posted above provides some MathCad simulation software (Martin J. King has donne a superb work). And, surelly, a 2" speaker can reach the 80Hz region (remember the filter posted above has a cutoff freq. of 80Hz).
Regards

 

[Audioguru]

ne5532 versus tl072

A 2" speaker is used in some headphones. It cannot produce deep powerful bass frequencies.

 

[pauloynski]

Re: ne5532 versus tl072

Audioguru: I think this topic is not the place to discuss this subject. If you dont´t agree that a small driver can be used at low frequencies I respect your opinion. I have at home a MLTWQT enclosure using 3.5" speakers and have a different opinion.

 

[maina]

ne5532 versus tl072

try LA4440. It works well with a 2.5 or 3.0'' subwoofer

 

[Audioguru]

ne5532 versus tl072

A 2.5" or 3" speaker cannot produce 20Hz with enough power to be heard. They might produce 150Hz pretty well.

The Sanyo LA4440 amp IC is obsolete and is not made anymore.

 

[maina]

ne5532 versus tl072

if u make it right it works. It all depends on how u make it plus it only requires little voltage input i find it better.