what is a ported box?

EGainer · 03-21-2004, 09:19 PM

TH3_FRB · 03-22-2004, 11:00 AM

The tuning is accomplished by using a "port"...typically a round tube but can be any shape if you take the time to calculate the dimensions properly. You can't just stick any old port in any old box. The port length and diameter are very specific to the enclosure size and specs of the speaker you plan to use. Generally, Ported boxes play louder (at the tuned frequency) with a given amount of power compared to a sealed box...BUT handle less power overall, produce distortion more easily due to uncontrolled cone flap, and typically roll off steeply from the tuning frequency (meaning the output above and below the tuning frequency diminishes fairly rapidly. If you're looking for maximum SPL, ported is a good choice. If you're looking for best sound quality...tight, accurate bass...sealed is a better choice. Sealed boxes are also typically much smaller also.

EGainer · 03-22-2004, 11:37 AM

reefer_bob · 03-22-2004, 03:34 PM

While yes, some prefer certian types of enclosures, you can usually always design a box of a different type and still have it sound very good.

Most of the better speaker manufacturers have good websites with pictures and dimensions of different boxes to use with their speakers. If not, call the Manuf and ask!

EGainer · 03-22-2004, 07:40 PM

The Seed · 03-22-2004, 11:22 PM

looks like that thing can handle tons of power. I prefer sealed. With a sub like that and with the right power you should be able to hit real tight while also getting some nice lower frequency tones as well.

TH3_FRB · 03-23-2004, 07:39 AM

Subs are typically designed for a specific application...some can be used in several enclosure types and they will suggest the best specs for each.

TH3_FRB · 03-23-2004, 08:10 AM

Depending on what model you have, a 1-1.25 ft2 sealed or 2-2.5 ft2 box is what you'd want for the 12". I'd personally suggest the sealed box and 500-1000w myself. The below link should hook you up with the info you need.[list][*]<a href="http://www.rockfordfosgate.com/scripts/rightnow.cfg/php.exe/enduser/fattach_get.php?p_sid=F8ixq27h&p_tbl=9&p_i d=156&p_created=1050097912">http://www.rockfordfosgate.com/scrip...attach_get.php

Dixon · 03-23-2004, 01:49 PM

Here is a good article on it here:

Which Box to choose?

EGainer · 03-23-2004, 06:42 PM

think it would fit in a "stealth" fiberglass box on the side?

03-21-2004, 09:19 PM	#1
EGainer AudiWorld Super User Account #: 59163 Join Date: Jul 2003 Location: NC Posts: 19,566	what is a ported box? __________________

03-22-2004, 11:00 AM	#2
TH3_FRB Junior Member Account #: 38426 Join Date: Jun 2002 Posts: 947	It is an enclosure for a subwoofer that is tuned to a specific frequency... The tuning is accomplished by using a "port"...typically a round tube but can be any shape if you take the time to calculate the dimensions properly. You can't just stick any old port in any old box. The port length and diameter are very specific to the enclosure size and specs of the speaker you plan to use. Generally, Ported boxes play louder (at the tuned frequency) with a given amount of power compared to a sealed box...BUT handle less power overall, produce distortion more easily due to uncontrolled cone flap, and typically roll off steeply from the tuning frequency (meaning the output above and below the tuning frequency diminishes fairly rapidly. If you're looking for maximum SPL, ported is a good choice. If you're looking for best sound quality...tight, accurate bass...sealed is a better choice. Sealed boxes are also typically much smaller also. __________________ ************************************************ The world needs more Hashers - bring virgins!

03-22-2004, 11:37 AM	#3
EGainer AudiWorld Super User Account #: 59163 Join Date: Jul 2003 Location: NC Posts: 19,566	ok, but supposedly the sub that will use this box sounds better in ported, would sealed still be ok? __________________

03-22-2004, 03:34 PM	#4
reefer_bob Member Account #: 45294 Join Date: Oct 2002 Posts: 14,337	Most subs can be used in either Ported, Sealed, or Band Pass Applications. While yes, some prefer certian types of enclosures, you can usually always design a box of a different type and still have it sound very good. Most of the better speaker manufacturers have good websites with pictures and dimensions of different boxes to use with their speakers. If not, call the Manuf and ask! __________________ Reefer_Bob. AIM: reeferbob R.I.P. Matthew Ammon aka O.W. Kenobi

03-22-2004, 07:40 PM	#5
EGainer AudiWorld Super User Account #: 59163 Join Date: Jul 2003 Location: NC Posts: 19,566	it's a rockford HX2 __________________

03-22-2004, 11:22 PM	#6
The Seed New Member Account #: 20439 Join Date: May 2001 Posts: 263	Re: it's a rockford HX2 looks like that thing can handle tons of power. I prefer sealed. With a sub like that and with the right power you should be able to hit real tight while also getting some nice lower frequency tones as well.

03-23-2004, 07:39 AM	#7
TH3_FRB Junior Member Account #: 38426 Join Date: Jun 2002 Posts: 947	Stick with what the manufacturer suggests... Subs are typically designed for a specific application...some can be used in several enclosure types and they will suggest the best specs for each. __________________ ************************************************ The world needs more Hashers - bring virgins!

03-23-2004, 08:10 AM	#8
TH3_FRB Junior Member Account #: 38426 Join Date: Jun 2002 Posts: 947	Is it a Punch or Power? Actual model # would help... Depending on what model you have, a 1-1.25 ft2 sealed or 2-2.5 ft2 box is what you'd want for the 12". I'd personally suggest the sealed box and 500-1000w myself. The below link should hook you up with the info you need.[list][]<a href="http://www.rockfordfosgate.com/scripts/rightnow.cfg/php.exe/enduser/fattach_get.php?p_sid=F8ixq27h&p_tbl=9&p_i d=156&p_created=1050097912">http://www.rockfordfosgate.com/scrip...attach_get.php __________________ *********************************************** The world needs more Hashers - bring virgins!

03-23-2004, 01:49 PM	#9
Dixon New Member Account #: 64580 Join Date: Oct 2003 Posts: 119	Re: what is a ported box? Here is a good article on it here: Which Box to choose? __________________ Dixon Solutions Expert www.Crutchfield.com dixon@crutchfield.com 1.800.388.2911.4040

03-23-2004, 06:42 PM	#10
EGainer AudiWorld Super User Account #: 59163 Join Date: Jul 2003 Location: NC Posts: 19,566	it's a 10" punch hx2.... i am going to put about 500 watts to it think it would fit in a "stealth" fiberglass box on the side? __________________

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