Hi everyone.

I've been reading up on Fi Car Audio and in particular the Q series of subwoofers. I really can't wait to start getting my cash together for one of these bad boys. However I have a small knowledge base problem. I don't understand the exact effect of a larger box volume for a subwoofer. In particular I've read that the recommended box size for a sealed Q 15 is 2 - 2.6 cuft.

Now, would the subwoofer get louder if the size was 2.6cuft vs 2cuft? There is more air to be moved in a 2.6 vs a 2 correct? But if this is true then would there be any other effects of having a larger box beside the obvious space consumption in the trunk?

Bonus question: I listen to a lot of different types of music. Am I right in thinking that by having a Q 15 in a 2.6 sealed enclosure that I can expect it to hit hard when I want to throw on some rap or techno and that I can expect it to have form and clarity with rock or complex bass movements?

Thank you in advance, and I appreciate your patience with these basic questions.

Take a look in the Technical section here and read the thread called "Hoffman's Iron Law"....I think you'll find it a little interesting.

To answer the question directly, increasing enclosure size will generally

Increase:

1. Efficiency

2. Excursion

3. Output

4. Low frequency extension

Decrease:

1. Mechanical power handling

2. System Q (ie. decrease the damping effects of the enclosure on the sub)

These are all good things, in my opinion.

Very interesting

Looked through the technical forum and couldn't find the topic on Hoffman's Law.

At any rate thanks for the reply. I guess I should aim for the 2.6 limit after displacement then huh?

1st page, second topic:

http://www.soundsolutionsaudio.com/forum/i...?showtopic=7115