This article is from the Car Audio FAQ, by Ian D. Bjorhovde (firstname.lastname@example.org) with numerous contributions by others.
- When properly designed and implemented, can provide
superior LF extension and efficiency.
- Cone motion is controlled more and therefore mechanical
power handling is increased.
- Cones are physically protected from contents of trunk
- Output is easily channeled directly into the interior
- Difficult to build (not recommended for newbies), and
very sensitive to misalignment due to calculation or
- Their characteristic filtering often masks any
distortion that occurs as a result of amplifier clipping or
overexcursion and thus will give the user no warning that the
driver is over-stressed and about to fail.
- Need substantial mid-bass reinforcement to make up for
narrow bandwidths in efficient alignments.
- Transient response is largely dependent upon the
alignment chosen....wider bandwidths will result in sloppier
performance, narrower bandwidths (and thus higher effiencies)
result in better transient performance.
- They can oft times be quite large.