Bandpass speaker box question?

Question

my brother told me i should do a bandpass speaker box instead of just having the speaker faceing the front like in your trunk because the trunk acts like a bandpass box when its closed, but im putting a memphis 15" 500w sub in my room and i just wonder if it would be better to do a bandpass box or just leave the speaker placed in the box like normal, he says it gives you more bass

Answer 1

Technically, a bandpass or a sealed box are the same. The difference lies only in the volume of the speaker enclosure. Sealed type has smaller volume.Each one has an advantage and a disadvantage. However I prefer a bandpass type because it seems I hear more deep bass with this type of speaker enclosure. Some people had different opinions on this but thats how I hear it.  

Answer 2

In greatly depends on your goal for the system. A bandpass system will appear to give you louder bass, but only at some frequencies. At other frequencies a bandpass will be sorely lacking due to its inherently non-linear response.

That is why band pass enclosures are rarely used for home audio. The frequency response is simply not wide enough to give acceptable response unless you are using several of them each one tuned differently. They work well in cars because car enclosures are typically way too small for the speaker size and a band pass fools the speaker into thinking and responding as if it were in a larger enclosure. The price for that is a peaky frequency response. In a car any bass at all is better than none so the compromise is an acceptable one. In a home where space is not so limited the preference is for a smoother response and therefor against band pass enclosures.