Why does DD rec. Tuning 40hz?

[yunvme666 10+ year member]

if i can keep voltage up i can get higher , i did a 45 at 39....

 

[dleccord 5,000+ posts]

we're talkin more bout the 95xx and above subs... theyre more geared towards spl

yeah they're not bad for SPL, but they're a lot more musical than most people say, the 9500s that is.