Can someone explain to me what determines the output of sealed subs?
Specifically, I'm looking at the SVS SB12-NSD and the Emotiva X-Ref 12. Ricci's data shows the SB12 having 11dB more output than the X-Ref at 20Hz when the SB12 is a smaller subwoofer with 200W less amplifier power.
DIY section, from what I can gather, suggests cone area and maximum excursion down low for low bass, and also driver sensitivity for upper bass. If I understand correctly, 11dB more means a bit more than 10x more output. Since the cone area is roughly the same, it would mean the SVS's driver would have almost 4x more excursion than the X Ref's, and that's clearly very unlikely.
Since the X Ref has the bigger box and amplifier and similar cone area, what else, besides excursion, determines max SPL at low frequencies?
Specifically, I'm looking at the SVS SB12-NSD and the Emotiva X-Ref 12. Ricci's data shows the SB12 having 11dB more output than the X-Ref at 20Hz when the SB12 is a smaller subwoofer with 200W less amplifier power.
DIY section, from what I can gather, suggests cone area and maximum excursion down low for low bass, and also driver sensitivity for upper bass. If I understand correctly, 11dB more means a bit more than 10x more output. Since the cone area is roughly the same, it would mean the SVS's driver would have almost 4x more excursion than the X Ref's, and that's clearly very unlikely.
Since the X Ref has the bigger box and amplifier and similar cone area, what else, besides excursion, determines max SPL at low frequencies?