Subwoofer Box size?

Hi,

I've got a question concerning subs in boxes. I got myself a subwoofer (Pioneer, 400 WRMS). In the user's manual it's said, that the perfect volume for a box'd be 25-49 liter (okay, these are german measures). but anyway, my question is, what exactly the difference'd be, if i put the sub in a rather small or in a bigger box? which way'd be the better one?

Okay, to help you a little bit with the vehicle: It's a Honda Accord CB3 (1993). at the moment i've exchanged the original plank, which laid on the sparetire, with a thicker wood plank and took out the sparetire to use the room for my sub. of course we used some small laths (i hope this is the right word in english) to make this construction a bit higher in the trunk, but even with them, it seems that the sub needs more volume. the space between the plank and the bottom of the trunk just doesn't seem enough.

i hope this could be understood. difficult for a german to have small talk about such topics.

Okay, so you think I'd be better off with a bigger box and change the frequency. you mean the frequency set in the amplifier's setup, right? well, at the moment I'm running the setup to boost everything between 20 - 30 Hz. I even set the slope to -24 Db, 'cause i don't like higher bass frequencies boosted too strong. i usually listen to trance music, so I'm still thinking about inreasing the volume of the enclosure or not. increasing the volume would cause the sub to sound much more loose, as you said. don't know if this'd be the right thing to do, if I need kicks for trance music.

Sorry to ask this question that late, but what exactly do you mean if you talk about subwoofer dislacement? You said there are lots of rookie-mistakes made and I AM a rookie, that's why I'm asking again =)