Pregnancy and breast-feeding: Using lactobacillus during pregnancy and breast-feeding is POSSIBLY SAFE. Lactobacillus GG has been used safely in pregnant and breast-feeding women. But other types of lactobacillus have not been studied during pregnancy and breast-feeding, so their safety is unknown.
Best Answer: Subwoofers of almost any brand have high enough frequency responses. I mean, take for instance the alpine type r. Its frequency response is 25-500 hz. Now it will probably never play that high, the highest you will probably ever need it to go is 120hz and thats for a bass test song. Quality subs deliver low bass, which is what most people look for.
Frequency Response for Headphones. 1  Frequency response is the range of bass, mids and treble. In the example 20 to 20,000 Hz, the first number represents the bass end of the spectrum while the second number represents the treble end.  20 to 20,000 Hz is generally accepted as the audible frequency range, this is the standard for most headphones.