| rjon17469 |
A friend asked me to build a subwoofer for his convertible. I think a sealed enclosure would be best, based off the type of music he likes, his bass preferences, and the space available. Now, I realize that the cabin of a car amplifies low bass frequencies, and the smaller the cabin, the higher of a frequency at which this starts. So this is even more dominate in a small convertible.
Now, my main question is, if I design the sub to sound good with the top closed, will I lose all my cabin gain bass when the top is opened? Is there any way I can remedy this?
Thanks in advance!
Reece |
|
|
| simon5 |
You will lose all cabin gain. You cannot remedy this.
It's a good idea to go sealed, so when you'll lose all cabin gain, it won't sound awful. |
|
|
| Stocker |
If you wanted a super-slick implementation, you could have your cake and eat it, too.
Top-down, make an eq curve that sounds good. LOTS of power and bass-boosting action.
Top-up, make the eq cut out and let cabin gain work for you.
Use a micro-switch or an existing switch for the car's sensor, whatever you can hide.
Of course, if it is a ragtop, you will have next to no cabin gain anyway due to the lossy nature of the top IIRC, so vented is the way, all the way. |
|
|
| rjon17469 |
| quote: | Originally posted by Stocker
Of course, if it is a ragtop, you will have next to no cabin gain anyway due to the lossy nature of the top IIRC, so vented is the way, all the way. |
Interesting. Sounds like something I should test. Does anyone have experience with cabin gain in ragtops?
Reece |
|
|
| RHosch |
| Cabin gain in a ragtop will be almost nonexistant. |
|
|
| Stocker |
| Cabin gain (or room gain) comes because the air in a volume is compressed. If you have flexible walls in your house or a cloth roof to a car, they will be (at least) very lossy, contributing "not much" to the low-bass output of a subwoofer. |
|
|
|
