quick double check

just double checking to make sure this wiring is ok....its a dvc 4 ohm sub with a mono amp an i will be running it at  2 ohms.....on the sub i connect the pos. and pos. and neg. to neg. then from one of the pos. leads i go to the pos. on the  amp and from one of the neg leads i go to the neg. on the amp.....on my amp it says

Speaker 1: +    -  Speaker 2: + -                                                                    

 i just use speaker one for my pos. and neg. hookups on the amp right?and it doesnt matter which lead i run my sub to my amp from right?? thanks for the help