1. why do you feel that the 10" wont do justice. I figure in teh right box it can be quite adequate. I would ask JB/Gun bir to post the recomended box volumes (sealed/ported) on this sub.
2. a 15" sub will not be overkill either. It will reall rock. I have played with 15" subs in the car (Kicker Solobaric etc..) and they can rock.
Now before you sat that the above to statements sound like they contradict each other. What I mean to say is the 10" sub might be adequate givne that you already have it but a 15" sub would really rock.
From wht I know the 5th channel of the 450 puts out 100W/4ohms. while it may not drive a larger sub as well as say a JBL 600.1 would it could also do a reasonable job if the 15" sub is efficient enough.
So I would first try the 450 with the 10" Hertz woofer in a box and only if I felt I needed more SPL would upgrade the sub and/or amp.
a) try the existing sub and amp if you want more SPL then
b) upgrade sub and see if you like it but ifyou want more SPL then
c) add monoblock using the 450 as a 4 ch. amp. as resale value on the 450 will at best only buy you a 4 ch. amp of equal quality.
The cabling could still be audison and the coax could still be Hertz. You were happy with these right? |