Go to the game mechanics section of the forums, and use the search function.
Anyways, everytime you equip and weapon, you lose ASPD. You need two doppels to get 180ish ASPD, and an awakening pot to get 190. Try drinking a pot, and your APSD should be in the very high 170s or low 180's.
Daggers drop aspd, katars, maces, swords, etc., each weapon drops more, depending on the type.