I have bought my first JBL speakers 4425, I would have liked the 4430 but they are rare in Australia and I am after a nice big sound. When I was younger about 25 years my next door had 4333's and it really created a huge impression on me.

I am looking to support these with a sub woofer as the bass wont be as substantial.

I have a crown PS400 amp and PSL-2 pre-amp and Luxman turntable

I have a ebay bid in on a M553 crossover.

Now do I go for active or passive subwoofers and what wattage/size do I go for. I would like my system to have a full balanced sound, so the subwoofers would supplement the sound but appear integrated, also do I go for 1 or 2 subwoofers. My budget is probably US$800-$1000 for the subwoofers.

Thank you in advance for any suggestions, I am really lost in/on this

regards
Michael