Actual sensitivity of KP 10.1

[MrCricket 10+ year member]

I have been told that the kappa perfect 10.1s sensitivity is measured in an unstandard way (I.e. it's not really 94dB). What is the true sensitivity of this woofer; like 91ish?

Click to read more...

 

[MrCricket 10+ year member]

Hmmm, ok. Is there any formula to tell how loud it gets with x amount of power?

 

[MrCricket 10+ year member]

Ok cool. Will it generally be louder or quiter after you figure in the enclosure and the car? If it matters, I have a 97 ford escort hatchback (fairly small car) and a .65 sealed box.

 

[squeak9798 5,000+ posts]

I have been told that the kappa perfect 10.1s sensitivity is measured in an unstandard way (I.e. it's not really 94dB).

The reason their sensitivity # is very non-standard is because, 1) they measure it at 2.83V (~2w on a 4ohm speaker), whereas "standard" is 1w. Using 2.83V is only acceptable on an 8ohm speaker. And 2) they measure the sensitivity in-car, whereas "standard" sensitivity should be a measure in infinite space (which, as Jmac pointed out, the car's transfer function is going to increase output).

Just an FYI as to why their sensitivity measurement is so far off.

 

[JimJ 5,000+ posts]

There are 94dB efficient subwoofers...but they're so specialized in their use (and their power handling is so low) that they don't make good in-car drivers.

 

[squeak9798 5,000+ posts]

There are 94dB efficient subwoofers...but they're so specialized in their use (and their power handling is so low) that they don't make good in-car drivers.

Some prosound subs have a sensitivity of 100+db //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

My Illusion subs are both right around 94db aswell, and they are car audio based //content.invisioncic.com/y282845/emoticons/moon.gif.9d317aec3339ffe7fde0638df52c628a.gif

Though, when dealing with subs, high sensitivity usually means less LFE (unless you can use an extremely large box). So having an inefficient sub isn't necessarily a bad thing........