how to build a sealed speaker enclosure design

This is something I actually learned in audio engineering class with Dr. This is true for all open back drivers, not just woofers. sealed cabinet has exactly the same output above resonance as the cabinet volume and alignment is no longer involved and is purely a function of the driver motor. Again, with the same driver in 2 ideal cabinets the ported vs. Here’s a random example:Īs you can see here, the highest -3dB point is achieved with the recommended sealed box. I encourage you to grab a box simulator to prove this to yourself, or look up any woofer in the Madisound woofer list and compare the -3dB points of their recommended cabinets for just about any woofer. Given the same driver in two ideal cabinets, the ported version will have a lower -3 dB, but since the slope is 4th order (24dB/Octave) instead of 2nd order (12 dB / octave) at even lower frequencies the sealed will catch up. The same driver in a sealed enclosure will play lower in frequency than will the same driver in a ported one, Think about how much air flows through the port in a 12' sub vs a standmount with a 6' driver.

With a 12' sub, proximity to the wall becomes more problematic. With a small bookshelf speaker, I find getting closer than about 18' from the wall leads to a dramatic reduction in clarity. If the port is too close to the wall, sound gets muddy. If placement is wrong or the port(s) are too long or short, cabinet volume is too small for the driver, ultimately you will get poor results. It the port is tuned properly to the driver and enclosures you will find that bass response will be tight and accurate. I haven't worked with that cabinet material and it is pure speculation on my part but it is something to note. Could be there is a problem in maintaining damping if you port an aluminum speaker. Not sure if that has anything to do with it. One thing that is common to Magico and YG is they are both aluminum. Depends on total speaker design and each designer takes a different approach.

How to build a sealed speaker enclosure design