dont know bout the EDB but i play a SR500. Its very light, i can't see the EDB being much lighter.
The difference in weight between my SR and my other guitars, like the Warwicks and Fenders, is unbelievable. I really noticed when i chose to take the Precision to a 2 hour long band practise, it felt really heavy whereas I could play my soundgear for much longer and still be comfortable with it.
If you are looking for a light bass i would definatly recommend the SR500