Thanks rafitoptx,
im using a Zoom G3N FX as a preamp into everything i play through, so the signal level is controlled, never had any bass issues ever, until i got this five string bass, ive took on some of the suggestions ie lowered the pickups right back almost into the body , even now im thinking about using a 300 watt PA head going through two 15'' cabinets to see if thatsis the way to go , as my Roland Bass 120 XL combo 12'' struggling , my Fantastic GK 500 watt700RB II combo has all my best tones ,and still produces a slight amount of flapping/farting on the low B ,
so your suggestion going to a powered 15'' is the same idea ive been thinking as a next step, thanks again !