My bass sounds/feels quite authentic. The 'Sheffield
Drum and Track Disc' and my son playing his drum kit make great references.
BTW: That particular mic, and of course- it's box, were purchased about 5
months ago.
I use the Behringer PEQ below 90 Hz only - I used a Ratshack meter and
manual measurements to get a plot and then adjusted by ear to get the
desired response. I don't allow any PEQ processed signal to go to my mains -
so it ONLY goes to the sub (even though it is digital and should not affect
phase I worry about filter ringing etc. - I don't want to risk any detrimental
stuff to the midrange or mid bass)
I think if you use these kind of cheap devices conservatively and do not try to
get "flat" but simply make small "tweaks" to smooth
things out (tame peaks) then I have only GOOD things to say about Behringer
as it is great value.
I'd be wary of any computerized solution but I guess I am old fashioned - I
like to see the plots myself and see the difference I get over a wide area - and
my ears play final judge and jury - to my ears the least adjustment necessary
is usually better (the room is the room and it is real and it is there - so a
certain small amount of room modal effect is "natural" and preferred to my
way of thinking).
Drums are a great reference - it is the hardest thing to reproduce
realistically.
It would help if you supplied a "virtual system" - a picture says a
thousand words - digital cameras come in Kellogg's Frosties packets these
days - there is no reason not to.