Sealed Enclosure : Pros and Cons

In this corner, we’ve got sealed subwoofer boxes! Sometimes referred to as closed.Now,what sets sealed boxes apart is their relatively smaller size when compared to ported boxes.Sealed subs are generally more compact than ported subs,thus they fit in many vehicles.If space is an issue in your case,it would be a good idea to go with a sealed box.Size isn’t the only factor that distinguish sealed boxes from vented ones, there’s also sound.Actually, the trapped air inside one of these boxes acts like a shock absorber or a spring against the cone of the subwoofer,it restricts woofer movement so it doesn’t over-exert itself in terms of cone motion so all the notes get produced evenly which results in tight,accurate bass.

Pros :

• Typically,sealed subwoofer boxes are smaller.
• Sound quality & accuracy are usually much better.
• Excellent transient response.

Cons :

• As for cons, it’s really difficult to think of any. I would say that the only major complaint worth mentioning is efficiency.Let me elaborate on what is happening inside a sealed box.
  Unlike ported boxes,the trapped air inside a sealed box greatly restricts cone movement – the rear wave dissipates inside the enclosure and offers no added value or potential benefits to the overall sound output.That being said,you’ll certainly need a high powered amplifier to drive your subwoofer and compensate for the loss in efficiency.