i know this is a rookie dumbass question but i’m still not totally clear on the difference! 
some one enlighten me!
Speed Endurance is any distance from 30m up to 150m depending on how you alter the recovery time.
Special Endurance is broken up into SE1 and SE2
SE1 is any distance from 150-300
SE2 is any distance from 300-600
all done with full recovery, i assume?
Yes, when doing Special Endurance. For Speed Endurance, you can get anywhere from 60 seconds up to 6-7 min. depending on what you’re trying to accomplish.