Frequency Help please

I am looking to get new speakers and am having trouble deciding. My question is. Will I be able to notice the difference if I get speakers with a frequency range of 30-21K vs speakers with a frequency range of 55-21k ? Can the average person tell the difference ? Thank you in advance for any help.

 

The 30-55 range is a tricky one for door speakers. You’re probably not going to get much down to 30hz from a door speaker unless you’re sound deadening like crazy and pushing some power.
Would you mind telling us the options you’re considering? There is usually more to speaker choices than just the frequency range

 

When manufacturers list specifications like frequency response you have to try and find out if they are full of shit or being honest.

It’s generally accepted that when something is listed 40Hz-18KHz, they chose 40Hz because that frequency is at -3dB relative to the rest of the spectrum. Some of these manufacturers are shady AF however and they’ll say their speaker goes down to 40Hz even if it’s rolled off at -6dB or more.

It’s always preferable when they state explicitly what criteria they are using, but something like this isn’t always included on the spec sheet.

Keep in mind also that when you ask a speaker to play lower frequencies like this, those frequencies are consuming the lions share of the power being sent to the speaker. In a low powered system this means it’s not likely to perform well overall.

So, when considering two speakers, yes frequency response is a factor, but you would generally weigh other things more heavily and when in doubt, you should go with the more reputable brand.

Like Destin said, 30Hz on a door speaker? Not likely. If it does, would you like that more? Probably not.

 

@destin_meeks I am looking at the Kicker 46CSS694 frequency response: 30-21,000 Hz, sensitivity: 90 db component system. $180. There are other component systems that I have found with a higher sensitivity rating example: Rockford Fosgate P1675-S frequency response: 55-22,000 Hz, sensitivity: 92 dB $180. but the frequency does not go as low. I am hoping to make a system that sounds nice and is a little louder then the stock system. I am more interested in the quality of the sound then the loudness, thinking I can add an amp if the power is to low. In the past a 50 RMS amp works well for my listening needs if I need an amp.

@dolbytone Thank you I did not know about the lower frequency using up most of the power and the difficulty of getting 30Hz in a door.

Thank you both for your time and help.

 

The capacity of the human ear for hearing rolls off at 10Khz, anything above that is usually lost.

 

Well you’ll need an amp 100% so factor that into the budget already.

you're definitely not getting 30hz from those kickers and absolutely not from the 6.5” rockfords.

 

@destin_meeks Thank you for the help and fast response,,,,,,with this information I am going to spend a little more time searching.

@JRMiller Thank you for telling me about the 10Hz, I didn't know that.

 

Those kicker CS have titanium dome tweeters that are too harsh for my ears, so I would suggest listening to a few sets at your local audio shop to see what your ears like of the options. Use this knowledge along with some research.

 

This might be the case for someone older whose hearing is diminishing. It's more normal that one can easily hear up to around 14-15Khz. 20Hz to 20KHz is pretty much the absolute range of human hearing, and it varies by person, but 10KHz is a bit low to say it rolls off for human hearing.

 

Human hearing range is typically.....20 Hz to 20 kHz.