Quick noob question ...Frequency Response

[am74Gibson]

Sorry for such a basic question, but searching off of "frequency response" found way to much.

My question is... is the upper frequency response rating the limitation of the crossover or tweeter? For example, if a speaker has an upper limit of 35,000khz. Is that because the crossover is designed to reach this, or the crossover can do more, but the tweeter limit is 35,000khz?

Thanks

 

[sparky77]

The tweeter generaly uses a high pass crossover which won't affect its high end limit, the limitation is inherent in the tweeter itself. Frequency responses above 20khz are not neccessary, as the average human has difficulty hearing much higher than 18khz.

 

[am74Gibson]

So...

If I understand correctly, the crossover just "crosses over" at a certain frequency and the tweeter goes as high as it can...right?

 

[sparky77]

Yes, that would be correct.

 

[jaxvon]

That is unless the designer (which might be you) uses another filter to limit the response of the tweeter, but this doesn't happen very often.

 

[Midcow2]

Crossovers

If I understand correctly, the crossover just "crosses over" at a certain frequency and the tweeter goes as high as it can...right?

There are typical:Low end Subwoofer, Midrange, high-end tweeter crossovers.

Different speakers physical sizes can acoutically handle different ranges better and hence the cross over.

Subwoofer ( 8"-15") 0Hz-200Hz

subwoofer to mid-range somewhere between (50 Hz (or Hertz or frequency or cycles per second) , 80,100,120,150 up to around 200Hz.)

Midrange 180Hz-5,000HZ ( typically 4/12 " to 6 1/2").

This cross over is not always selectable and is generallly within you main Front speakers or center speaker.

Tweeter 5,000 Hz to 20K (20,000) Hz (typically around 1 1/2" to 2 1/2 ").

Good crossover circuitry switches seemlessly and the human ear hear a single range of sound (0-20kHz). ( Factoid: typical phones are limited 300Hz - 4000Hz).

 

[cruiseoveride]

Remember that a crossover is not like a switch, it does not switch ranges of frequencies. It simply damps either higher or lower frequency by a certain factor usually given in dB. The buzz word is "rollof" , the higher the rolloff the more "switch" like the transition between a frequency range becomes.