This new woofer is a 16 ohm version of the extremely popular M-130, 5.25" woofer. It uses the same frame, curvilinear cone, dust cap, vented pole piece, and outer venting, but a larger motor structure was used and parameters designed in such a way as to offer good low end response in a ported enclosure and to also work well in a sealed enclosure.
These 16 ohm woofers are designed to be used in paralleled pairs.
Optimal sealed enclosure for one pair is .48 cubic feet. In this configuration they will reach a -3db of 90Hz. In an optimal ported enclosure for a pair is 1.15 cubic feet. They will reach a -3db of 47Hz in this configuration.
Like the 8 ohm M-130, the M-130/16 has a very smooth response curve with very little upper end break-up and a very extended range.