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Just installed new system in my '97 Grand Cherokee. Pioneer Premier head unit ; Mbquart components in front doors ; Mbquart 2-ways in rear doors ; U.S.Acoustics 4065 4 channel amp(for door speakers) ; 12" Alpine type-r in a 1.0 cube sealed box ; Hifonics bx1000d mono amp(for sub). The sub doesn't have the hard hitting tight bass that I expected. Thinking about selling the type-r and get a different sub. - Or maybe sell the amp and get a different one. Any ideas ??

I would build another box, try one that is tuned to a certain frequency, but if you want tight bass, look into a sealed box. The Type-R is an excellent sub, and the Hifonics amp is more than enough power to make it pound. Most likely the box is the culprit here

It is in a sealed box. It's about 1.0 cubes. Should I try maybe 1.5 cu.ft. sealed box?

My buddy has 2 in 1cuft sealed and they sound great on a crappy amp, but if u have one u really should go ported with that guy and i would think that you wouldnt be too dissapointed, i would check with Scarrell on that one... he did PM me his box design though.... if you want it i can get it to ya

if ur not happy with the output of it sealed, try a ported enclosure built to spec.

Try moving the box into different locations. That is probably most of the problem.

with that Cherokee u should have loads of room in the rear for a Ported Box, and im sure you could hit really hard with that sub with that Amp... Definitely try moving the box around a bit first. Also check the Gains on the amp to see what they are set at. Check your EQ as well on your HU, make the appropriate settings and then recheck.

I'd toss it in a ported box...

I have no experince with the type r's, but from what I understand they really shine in a good ported box... I'd tune it fairly low, 30-35hz... :happy055:

my Type R is in a 3cf box tuned to 30hz.. it slams.. in a Cherokee you can definately fit 3cf.. now, i have never used a sealed box for a Type R, but i have heard/read that they do and sound best in a ported box.. i myself though, tend to go with subs that i can use in a ported box, while you can use just about any sub in a sealed or ported box, i just feel that not all subs should be in a ported or sealed enclosure.. like the low end subs at Wal Mart or JL W0's or something, i feel they should be in a sealed enclosure, but thats me,while you can use basically any sub in a sealed box, i feel that subs like the Type R, RF HX2, RF T1, Diamond Audio D6..etc.. subs in that "range" will do better in a ported box and you will get much better results in low end ofcourse and even SQ using a ported box tuned correctly..i can tell you that the Type R will give you a good amount of low end on its rms and more.. 500-1200rms will slam this thing.. i have mine on a JBL 600.1 and it does fine all day. so anyway.. enough with my rant that doesnt make sense, lol.. do a ported box 2.5 - 3.0 cf tuned to 30-32hz..

^^^the master has returned ^^^ lol