l7
- Thread starter redef91
- Start date
- Replies 19
- Views 1K
We may earn a small commission from affiliate links and paid advertisements. Terms
Sabz5150
FALCON PUNCH!!!
Depends. What kind of boom are you looking for?
redef91
Senior Member
TommyTheCat
Gonzo Scientist
No you dont. Max power handling decreases in a ported enclosure, even with the use of subsonic filters.
VTECin5th
Administrator
i thought it was the complete opposite?
phyregod
!!YTINASNI
Bandpass is where its at. Ported won't shake you enough, and sealed won't be loud enough.
Where does it say that? The power handling is shown as a single number without any indication of box type. The SIZE of the box is different, with the ported requiring a larger box- but power handling will always be higher with a sealed box than a ported box.
Sabz5150
FALCON PUNCH!!!
No doubt. I have a pair of 8's in a custom 4th order and they pound. Even with only 120 watts per speaker. Damn efficient.
L7 were design for small sealed enclosures, but thats not to say they dont sound sweat in a slot ported box. L7 and a bandpass box dont mix well at all, it will sound like sh*t. If you had the room i'd port it but if not you will no be disappointed having it sealed 
If you need help with tuning the ported box i have a program that tells you what size port to use for the size of the box and tune frequency.
If you need help with tuning the ported box i have a program that tells you what size port to use for the size of the box and tune frequency.
yea that how systems get stolen
systems are made to heard on the inside of the car not the outside
Kicker manual
goto page 6 and page 7. its a solo-X, but it behaves like any other woofer. higher power in a vented box vs. a sealed box.
It's not quite that simple:
http://www.rdrop.com/users/billmc/hp48/spkr48_3.6.shar.old
The Pmax figure is a maximum momentary power handling number, not anything that you should use as a reference for how much "constant" power you can feed from an amplifier. The higher the frequency being produced, the higher your Pmax becomes. Since the ported box is tuned to a higher frequency, the Pmax for the whole system is higher- it doesn't mean that the speaker can take a larger amp and be ok. The function of the ported box is to increase the efficiency of the speaker by allowing sound waves from the rear of the cone reach the listener's ear- but you lose the acoustic suspension of the sealed enclosure. Since you don't have an air spring supporting the cone anymore, you have less control of the cone's movement- so you shouldn't push as much power into the speaker as you would with a sealed box. A high power level that would be safe in an acoustic suspension enclosure (sealed) can easily cause overexcursion in a ported enclosure, then upset the voice coil and blow everything apart.
If you read the disclaimer on page 7 of the manual, you'll get a little bit of what I was talking about in the beginning of the paragraph:
"This enclosure is designed for SPL ONLY! It is designed to be used with test tones above 56Hz! Playing music with frequencies below 56Hz will results in very, very bad things happening!!"
Sure, you can drive more peak power into the speaker at specific frequencies and benefit from it with a specific box design, but try to load up your ported box with the same low frequencies and power that you can push through the sealed box and you'll end up blowing stuff up. I know I don't listen to music that consists of only 60Hz sine waves- do you?
not using the SPL box, you can still run considerably more power. tuned @ 35hz. there is also a cooling property associated with vented boxes. I agree, sealed boxes offer a larger frequecy response range, but in all my experience in the SPL competition world, and all my conversations with the big names and record holders, Vented = more power. The idea behind higher frequency allowing more power, is that the higher the frequency the less abuse it actually is on the woofer, so the more power you can put to it. 35hz is plenty low, and most people dont go below that, and most manufactuers prefer you not to go below that. With a sealed box you have a little safety margin.
TommyTheCat
Gonzo Scientist
Nismo: If you are going to say a ported enclosure, playing a smaller bandwidth, has a higher power handling-you're right. But if we limit the bandwidth of a sealed enclosure, either by making it smaller or eq/crossover, we've increased the power handling as well. Works in reverse too, larger box or wider bandwidth we get less power handling-for any box.
to Tommy
