Frequency Response

JoshParsons84

Can anybody explain exactly how your frequency response works? For example let's say 22Hz - 27kHz. I know the 22Hz is how deep and low your woofers are gonna go. OK and then the 27kHz....how exactly does that work? Is that how harsh or how bright or how detailed your highs are gonna be? So would you want that number to low? And would 60kHz but too harsh on your ears? I mean I like loud ear piercing treble, so would that mean I would like something that would be 60kHz? I'm a little confused on how it works.

Early B.

To get your learn on, use google....

http://forum.ecoustics.com/bbs/messages/34579/131062.html

http://www.audioholics.com/education/loudspeaker-basics/understanding-loudspeaker-frequency-response

PolkThug

A frequency response is the range of frequencies (aka tones) that the speaker is capable of reproducing. It would also be good to know what the response curve for that frequency range looks like for that speaker, ie Can the speaker play a 25Hz tone as accurately as it can play 1kHz tone? Also, what happens when multiple tones are played at the same time?

Ricardo

..and...what's the frequency range your ears are capable of hearing? Maybe I am wrong, but anything above 20KHz has no way of being heard by the normal human ear, so what's the benefit of having speakers with a FR up to 60KHz?

Early B.

HTrookie wrote: »

..and...what's the frequency range your ears are capable of hearing? Maybe I am wrong, but anything above 20KHz has no way of being heard by the normal human ear, so what's the benefit of having speakers with a FR up to 60KHz?

Supposedly the same benefit as having a subwoofer go beneath 20 Hz -- you can feel it.

Ricardo

I understand feeling low frequencies (walls shaking, etc); how can you feel high frequencies?

zombie boy 2000

I imagine its like your ears are ringing. High-pitched frequencies hurt my ears. Kind of like my wife's incessant harpy-like naggin':D

surfntomm

just because the response states that it goes up to 60 khz doesnt mean you have to be able to hear it. the manufacturers just list the specs and im sure that the speakers do make sound at those upper tier hz's but only a dog will be able to appreciate it.

zombie boy 2000

Honestly... I think the theory is that by setting the mark higher, the speakers will be able to produce the higher frequencies we can hear a bit more effortlessly.

madmax

Another way to look at frequencies is to understand what makes them. A speaker producing a 20 hz tone moves in and out 20 times per second. A speaker producing a 20 khz tone is moving in and out 20,000 times per second. To get an idea what all these frequencies sound like you can hook up a graphic equalizer, change each slider and note what changes.
madmax

Lowell_M

I had a Sony center channel (that was cheapo) that stated in the literature it reproduced up to 90khz or something insane. It was actually some sort of marketing ploy and stated in the literature that although the human ear can't hear anything above 20khz, the human experience is heightened with the reproduction up to 90khz. (or something stupid like that)

I thought the speaker was a big pile of ****. I sold it on ebay a few months back after it sitting in my closet for 4 years.

engtaz

Ask ben about those freq with his sonosub.

jakelm

a_mattison wrote: »

I had a Sony center channel (that was cheapo) that stated in the literature it reproduced up to 90khz or something insane. It was actually some sort of marketing ploy and stated in the literature that although the human ear can't hear anything above 20khz, the human experience is heightened with the reproduction up to 90khz. (or something stupid like that)

I thought the speaker was a big pile of ****. I sold it on ebay a few months back after it sitting in my closet for 4 years.

I sure hope you didnt have any animals at the time......those poor creatures.

JeffBowser

Another consideration in those insane freqency ranges I've not seen mentioned here - does your source output it ? By source, I mean both your amp and the CD, DVD, etc...

jdhdiggs

They also don't give you volumes associated. I've seen numerous 22Hz rated speakers that are really only 45Hz speakers at listening volumes. They can get away with it by showing a flat curve to 22Hz at say 1dB but in bass regions, 1 dB is dog meat.

RuSsMaN

Ultra bandwidth, response out over 20Khz (the upper end of human hearing) is something a lot of manufacturers use.

I believe the theory is in a nutshell, that if there are fundamentals out there (above 20Khz), even though you cannot hear them, if they are reproduced, you can hear the resulting harmonics from the fundamental that DO fall in the range of human perception.

As far as rated response, look for fluctuation within a given range, ie +/- 2 db,3 db ect. Usually, the flatter (especially through the midrange band 200Hz - 4000Hz) the better. As far as the top and bottom of the range, some manufacturers list those points as 3db, 6db, or 10db down. 6db down is on the edge of 'useable' response in my book.

Cheers,
Russ

Cheers,
Russ