1 question:
ur front comp is 3 ways ?

if budget permits
change ur 4ch prokick amp
ditch ur rear comps (or change it to power up by HU)
get an active crossover with bandpass (run actively)
change to sealed ( budget style: cover up ur vent)

just tune your front comp to be more forward.as for the back comp, tune it down. the back comp is to help the front end. as for the sub. tune it down. say around 100hz. if u got multiple subs. just try use 1

reason to change the 4ch prokick - simple.
prokick doesn't give good SQ
high distortion, signal ratio is low, "dirty" sounded

as for sealed box..normally sealed box is smaller...
vented one are normally 1.5cu^ft above

as i said...ditch the rear comp
or make it power up by HU...in SQ setup...
rear comps are just for the ambience
not the sound

and normally the sub are tune low
lower than 100hz depends on the sub's capability

Agree with driftmeister, SPL amp no matter how you tune it... The sound hard to be clean & clear...
SQ sound is clean & clear, you can hear the vocal & musical clearly.
If not why prokick amp so cheap le...?!

If the rear speaker still same loud as or more loud front speaker, it maybe become noise at front. So disable it or direct connect to HU or use lower the rear spekear volume.

Prokick amp famous of delivering big amount of power ( tarak clean ).. good for SPL.. strictly not for Sq.. changing amp might get u closer to SQ world..

Do let me know if u wanna sell off ur amp or woofer..

mind to elaborate more about the 'tarak clean' thingy? even the SQ series Prokick with burr Brown chip also tarak clean?

i think u made a big mistake by going for a 3way system with your current setup .....u should have gone for 2 way .....
in a car environment in order to get a good 3 way u need a lot of EQ adjustment for your mid as a mid require an enclosure and most of the time d installation of mid in car couldnt give u d enclosure u need .....most of the time, its highly recommended that to play 3way in full active system ....

i think the easier way is to ditch your back speaker ....then change to a good HU ....if u wan to go for SQ the u should go for a pioneer 8650,9650 or p80r (if u still wanan stick to pioneer lar).....use the active crossover in these players n play semi active with your passive crossover.....the EQ in these players should be enough to control your system ....try these first before u change your amp .....your system sound very bad now is cos of a wrong setup for SQ .....i have heard of a Prokick setup that sound quite good.....a good HU with a very well balance setup could make an amp shine even if the amp is lousy .....

yupe.....d 8650 n 9650 can only go down to 1.6k but u could try using d the mid and midbass together .....u can use the passive internal crosspoint for the mid and midbass and use the tweeter as the active......but this way your mid and midbass have to quite close together ....it good for mid which is at kick panel ........the lowpass filter for the mid bass range from 1.6k to 16k....

3 way is even more complicated in terms of angling, tuning

yupe ....like they say ...3 way is d hardest to setup ....semi active is when d player can support only 2 way system ....

in a 3 way speaker ....it consist of
2 tweeter
2 mid (the smaller speaker)
2 midbass

example .....for a HU that support 2 way active system ...there will be 3 pair of output from the HU .....1 pair is for d tweeter , 1 pair is for the midbass and 1 pair is for d subwoofer.....there is 2 different ways of playing semi active ......

first one is to use the tweeter output to drive the tweeter and the mid in this way u can control the high pass of the mid .....the crossover point of the mid and the tweeter will be determine by the original crossover......then the midbass will be controled from the midbass out from your HU

the second way is to use the midbass output to drive the mid and the midbass together ....this way the tweeter will be fully active.......

if u wanan run 3way full active then u have to either change your HU to a better HU or get a processor such as d Alpine 700,701 or the 900.....

there is e xover like Trutech F2 tht has 2 channle of bandpass which you can use for 3way setup...

as for processor... the 900 is not really a choice as it only can be used with the DVI-9990... other than tht its pretty much a useless thing...

cheers...

3 way external crossover ?

the only crossover that can go 3 way that i can recall is TRU F2
but this is real rare species

but u can forget bout preout cos u HU->Crossover only need 1 pair of RCA

but u're using 1 x 2ch and 1 x4ch
u can only go front 2 way

or u mean 3 way comp set?