Sealed or Ported? That is the question we get asked a lot

March 25th, 2015

Sealed or Ported? That is the question

The most commonly asked question we get at Source Sounds is whether a subwoofer works best sealed or ported? In our opinion there is no definitive answer to this as everyone has their own opinions and preferences. All of us here at Source Sounds in Sheffield prefer the sound of a sealed subwoofer enclosure over the sound of a ported enclosure.

 

Sealed or Ported? Rainbow Hammer SW250 sealed subwoofer enclosureSealed Enclosures

A sealed subwoofer enclosure uses a specific volume of air for the type of subwoofer. As the woofer moves, it pulls the air forwards and backwards with no pressure loss which allows the subwoofer to reproduce the low frequencies more accurately than a ported box due to the air inside the enclosure acting like a shock absorber, allowing the subwoofer to move with more control thus giving better controlled sub bass.

 

Ported Enclosures

Sealed or Ported? That is the question. Hertz EBX250 ported enclosureA ported enclosure is something that is a little more tricky to build due to the nature of the box. For the subwoofer to perform to it’s optimum the port has to be a specific size. This includes correct measurements for the width, length and shape of the port. You can’t just stick a hole in a sealed box and turn it into a ported box. Having a ported enclosure allows the subwoofer to take advantage of the frequencies produced at the rear of the subwoofer. This reinforces the low frequency response of the subwoofer. This lower frequency response however will only sound good at whatever the tuned frequency of the port is.  This tuned frequency can be adjusted by altering the airs resistance to motion inside the port which is accomplished  by changing the length and width of the port.

 

In summary, ported enclosures can typically offer better low-end extension as well as greater output around the tuned frequency whereas a sealed enclosure will give a better frequency response across all frequencies with a more controlled output, which is why here at Source Sounds in Sheffield we prefer the sealed enclosure as it gives better sound quality overall than a ported subwoofer enclosure.

 

The UK's Ultimate Car Audio, Security and Navigation Specialists, having been voted on numerous occasions by the "UK's Best Installers" by the Car Audio, Security & Navigation Industry Find out why...
Testimonials

A rare treat to experience excellent customer service, real expert and knowledgeable advice, enthusiasm and on-going support. Nothing is too much trouble for Paul and the team at Source Sounds. I wouldn’t even consider going anywhere else!

— Bruce Sachs

just had a speaker upgrade, along with sub and amp fitted by these guys ……. everything, from product knowledge to installation is amazing, thanks to Jordan for getting me to buy what i needed, not what i thought i needed and to Paul and the team for the most awesome installation and sound experience an my T6 ……. it really is unbelievable the difference……. i knew it would be good, but this is astonishing!!! …… if you want the best, listen to what these guys say to you and go with them!!! …… Thanks so much guys …… got my dream wheels now you’ve had your mitts on her ….. awesomeness!!!

— Mark Wilford

Really happy with my service and my purchase. Christian and Paul were really honest and polite, and helped me make the right decision in regards to choosing to upgrade my sound system as opposed to replacing my faulty CD player like for like.