We can do testing long-term again, but we have already demonstrated that with the 5 minute torture test on the test bench at 60 Hz. I have been in the industry for so long that I can run a 3500D at 2 Ohms on one of the shallow BM mkIII's for 4 months without a problem, so me performing a long term daily test might not be fair to some users. Keep in mind these Obsidian's are 600 watt, under $160 woofers. For what you see in these TL scores you can always estimate based on the rule of power; half the power is a -3 dB difference. These numbers are more of a torture test and proving grounds than a "these do great on the meter up high" sort of thing. Designing subs to peak high is no fun IMO. I like to have fun with these drivers and play them loud and play them deep. It's amazing what these drivers are capable of. In this test we lengthened the port a LOT and the score didn't go down a lot, which was to be expected. But we kept the tuning higher because this is in a CRX and they peak high. But in our recommended enclosures they will still put up respectable numbers over a broad bandwidth which is what these drivers are about.