Dead simple boxes.
Well I put up a playlist of making rather simple vented boxes.
They are made from what is often regarded as improper panel material for a good box.
But I'll make a simple arguement that they are made from perhaps an ideal material for loudspeaker enclosures. It starts with why? Why are we making an enclosure in the first place? The answer is rather simple and two fold. Primary answer is that we are isolating the rear sound pressure generated by the backside of the cone. This has a certain degree of time or phase lag and when the pressure pulses that are made on the front meet the ones made on the backside we get a fairly large cancellation in the resulting sound pressure level. What's the second reason? Mechanical impedance matching. We are trying to match the volume of air behind a driver with mechanical suspension springiness also called compliance. This is much more important to get correct in a sealed enclosure than it is in a vented enclosure. To small of an sealed enclosure will limit your ability to generate excursion. This is the bane of many a subwoofer driver in a reasonably sized enclosure. You need a purpose deigned for a small enclosure to extract the maximum bass performance in a reasonably sized subwoofer. But.. I digress.
Back to the OSB. A good candidate for a an enclosure panel would have a stressed skin type of a construction. One where you have an inner and an outer skin of stiff highly compressed material with a dampening layer in between them. So I have set you up to understand what the thicker OSB construction can provide. It is indeed the two stiff layers with a softer dampening layer between the two.
So are there any sonic benefits? Probably! I will be doing some panel resonance videos in due time over the summer and we shall see. Using OSB is one of a few methods of constructing a cabinet that I have used of the years. It is not easier, it is not less time consuming if you want a good cabinet finish. But it does offer a clarity in the midrange that I have noticed and deemed worth the effort.
Mark's Ramblings, show and tell. And other sundries.