Can you pair 2 sets of DM 50 BT speakers for Bluetooth playout to all?

Hi I am considering buying 2 x pairs of DM 50 BTs (4 x speakers total) Or 2 x DM 40 BT / & 2 X DM 50 BT. (also 4 speakers total) I will be using 2 for djing but want to know if when i connect 4 can i send tthe same Bluetooth audio to all 4 speakers in my living room at the same time? Does this work and if so, how? Thanks in advance