Space isnt really an issue , still not convinced by those flat subs after looking up the specs and prices even the cheapest on those choices looks like it outperforms it, space isnt really an issue id rather have a bit more power
Space isnt too big of a deal since i dont ever need to put shopping ect in there just the odd jacket lol , Id like to keep it hidden to people looking in , i.e behind the rear strut unless u can get a cover or something.
Budget is £300 including Amp , Iv already got a Fli Loaded 1000M amp here i can use though depends on size of sub if it will fit in the car as its rather large. Id like it to go either side of the strut , preferable behind it so not visible to thief's , I listen mainly to HipHop and Grime and like my deep low bass
Well I have the understrut sub box and empty its 0.7cuft. Ive seen bigger ones that you can get 2cuft. So its 500wrms @ 2ohm your amp that is. So You have the choice of a small under strut box being sealed as it will drop low with a 10" sub. Because you havent got that much power a more effcient sub like a Id Max would be good for you IMO. You could get something like what ive got a Fi Q but that can take 1000wrms but Im giving it 1200wrms @ 1ohm.
Or you could get a big box made that would fit under the strut but would take more of the boot up and have it port tuned to about 33hz. My last sub was a RE XXX v3 15" in a 4cuft box port tuned to 32hz and it was awesome with the lows. It was very clear to but I was running 1600wrms. So you could maybe get sub that needs about 2cuft ported and that could work for you. Do you perfer vented or ported?
Nowhere round here does custom boxed as far as i know / can find so limited to things like above with pre built box's, Havnt heard a ported box but i read they are better for low bass.