I am buying a 5 string (because I'm too lazy to reach down the neck anymore). I don't expect to spend a lot of time below 40hz but it could happen occasionally. I understand that neck-thru's have more fundamental harmonic content than bolt-on bass designs (I'm used to graphite bolt-on 4 strings). I would imagine with 5 strings this would be even more pronounced than 4 strings, but that's an assumption. Is a bolt-on 5 string bass less demanding of amp/speaker low-end response than a neck-thru? Is it just a matter of personal taste (like an 8x10 SVT vs Acme B2)? Will anyone ever really notice what happens below 60hz in a live situation? I'm used to homemade 15" cabs (albeit simple and sloppy ones); previosuly I would tune to 40hz. Will they survive as before if they are tuned to 30hz? I've never tried to amplify 30hz and I'm at a loss as to what my needs would be.