Sub Building 101 - Spaced Spider Upper Triple Ring 

well… it depends i guess… efficiency is also a consideration up to a point… dB and power are intertwined. at lower dB and wattage a more efficient sub that isn’t able to handle as much power will be louder but at a certain point more power is required to overcome the fluid dynamic limitations of the environment etc at that point, more power is required to produce higher dB in order to handle more power efficiency is inevitably sacrificed. the 10” VC is heavier and is subsequently less efficient. in order for a cone assembly to achieve 6” of excursion its maximum frequency would be extremely low. the faster the cone moves (at the same power) the less excursion will be observed. IMO is all about balancing goals and variables to achieve a desired outcome 🤷‍♂️

​@MrM_Full-Send Awesome thanks for the reply and info. Keep learning more and more since finding your channel. I know a lot generally but the fine details I always love to learn. Was thinking of dipping my hand into the subwoofer design world. I got these two Harbottle Carbon 18 drivers which are extremely efficient 3k RMS from 5hz-100hz but per Harbottle they have two other drivers which are even more efficient 5hz - 150hz and tighter and 4400rms but cost even more. They cost double basically. I thought maybe I could create a comparable sub but more powerful. 🍻

is it a 2” or 2.58” voice coil?