d2 is liay better hai cause it can use full power of ur amplifer
d2 have connection of 4 , 1 ohms
connecting @ 1 ohms takes 4 times more power as compare to 4 ohms
4 ohms is ideal for every amplifer
while d2 have 2 , 8 ohms connection
at 2 ohms , the woofer will take two time more power then 4 ohms , while at 8 ohms , i will produce 2 times power then 4 ohms
d4 - 2ohms ,8 ohms=2 ohms best great output, 8 ohms worst low output
d2 - 1ohms ,4 ohms=1 ohms most powerfull , 4 ohms ideal for every amplifer (matching impedence)
in d4 - 2 ohms is only usefull while 8 ohms sucks
in d2 - 1 ohm is superb at bass , at 4 ohms all amplifer will run it easily because more then 80 % amplifer are stable at 4 ohms , 4 ohms load , 4 ohms source - perfect matching but rms should be equal and peak to peak should be equal
