Infinity Kappa Perfect 10 - Sealed or Ported?

[Tazzy]

I've come to the conclusion that I'm a compleet noob when it comes to designing speakers.

I bought the Kappa Perfect 10 sub a couple of years ago for my car. Since need a big sub in my car I've been thinking about using it for the hometheater.

I've been looking at the plots in WinISD and can't descide which route to choose.

Any ideas?

[lemans23]

ported

[Paradise_Ice]

Originally posted by Tazzy
I've come to the conclusion that I'm a compleet noob when it comes to designing speakers.

I bought the Kappa Perfect 10 sub a couple of years ago for my car. Since need a big sub in my car I've been thinking about using it for the hometheater.

I've been looking at the plots in WinISD and can't descide which route to choose.

Any ideas?

Firstly your not a noob.

This may be just me, but out of the two i would always seal, now dont all jump on me at once and say porting is good, its just my personal taste.

I have used the Kappa P10 in pairs and they sound rather flat and rubbery in ported boxes and in sealed boxes they lose the rubbey sound and just sound flat.

The Infinity as not sensitive and take alot of driving, so what kind of amplifier do you have?

[Tazzy]

I've got a 500w version of Rod Elliot's P68 in my stack of unfinished projects. Guess this amp is strong enough to power this sub?

@Paradise_Ice, what box size did you use?

To make things a bit more complicated, as I still don't know what I'm looking at in WinISD, a friend suggested to go for 4th order bandpass.

[The Paulinator]

I'm terribly sorry, but I just checked and, I hate to break this to you but you are definitely a noob.

I of course have no idea what a "noob" is.

[Tazzy]

Noob is slang for newbie

[simon5]

Which Kappa Perfect 10 do you have?

For home theater, I prefer vented (ported) enclosures, especially for a HT setup.

Problem is, you might have trouble to find the T/S parameters needed to design a good vented box. I don't know where to find this and I don't know if Infinity will help you out on this.

A good compromise is to build the biggest sealed box you can tolerate.

[Tazzy]

There is 1 Inf Kappa Perf 10? The data sheet was included with the sub.

Going big is not an issue, the HT room plan to build is rougly 3,5m wide x 6m deep

[Nano Man]

i built a custom box for my friends dual kappa perfect 12s. it uses two ports (prefab ones from partsexpress, i believe they were 3.875 i.d. X 8, but i could be wrong on the length) and the volume of the box was about 3.5 ft^3.

he listens to rap. they hit! hard! really hard! not very musical, but they have more than "one note bass." and they go low! my guess would be -10db at about 20-25hz, just before they reach xmax (i haven't heard them bottom out yet). he has the DVC version (v.c. wired in parallel, and the subs wired in series for a nominal of 4 ohms) and is running them with a 1600 watt rockford amp. i can vouch for all 92 db of sensativity.

its hard to say what you should do, but if you are going strictly for home theatre, i would say ported, no questions asked.
however, if you want to do double duty music and HT, and are in a small enough room (15ft X 20ft max) i think that a sealed version might be more what you are looking for.

i really can't say enough good things about those subs. i have heard louder subs, but these are tight, very controlled, and seem like they would have a lot of potential for a sealed application.
and like i said, even ported, they are definitely do not give a one note bass at all.

[Tazzy]

Before the last post I made up my mind, 4th order BP was the way to go... Now I'm lost again