not happy with alpine type R's

[god_speed36 10+ year member]

I have two dual 2ohm type R's in a 4.45cubic box tuned to 33hz. there powered by a memphis 1100watt mono block running at two ohms. Ive tryed everything from tuning it to 28hz, 45hz. running the amp at .5 ohm.. and is still sounds like crap

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[Supergumby5000 5,000+ posts]

got em wired right? what kind of vehicle? those subs can take much more than 1100watts

 

[god_speed36 10+ year member]

yeah there wired at two ohms, ive checked.. and re-checked. ran the amp at .5 ohms and there still not loud. there in a firebird. with a square vent port. should I get a bigger amp? or just try and trade them for dual 4ohms?

 

[jellyfish420 10+ year member]

are they wired in phase? how did you fit a 4.5ft box in a firebird? where are they firing? are you sure the box is tuned right?

 

[god_speed36 10+ year member]

I couldnt believe it was 4.45 cubic feet. the box goes clear to the back of the seat and all the way down in the trunk. they are firing up. half in the window and half covered up by the hatch. we have tuned the box for so many different things and nothing sounds even halfway loud.

 

[jake760 10+ year member]

type r not loud? never seen those words used together in a sentence. they should still slam on 1100. does your box have air leaks? are your subs in phase? Is the gain set properly? Power wire big enough? getting voltage drop? how far are the subs moving?

 

[god_speed36 10+ year member]

the box is sealed up nice, we checked it over. no leaks. im not sure what you mean by phase. I have all 4gauge wire, two batterys and a one farad cap. getting 13.47-15volts. the subs are barely moving

 

[jellyfish420 10+ year member]

ya, i had a friend w/ 2 type r 10's in a camero, and they hit pretty hard off about 600 watts.

what size type r's you got? where in ill are you?

 

[god_speed36 10+ year member]

I have two 10's. I live about 15 min east of burlington Iowa

 

[PSturmer 10+ year member]

barely moving means there not getting the power. if they are wired right then its osmehting with the amp

 

[WMCCLR 10+ year member]

Im running 2 on 1200 @ 1 Ohm and they slam

 

[woc47 10+ year member]

post pics, or video.

What head unit are they on, whats the prevolt on the head unit's out put and where are the gains set on the head unit

I have a type r 12 in a 2.7 cu ft. box tuned to 37 hz on a mrd 1005 at 4 ohm ported through the rear deck. It slams to say the least NEVER HEARD A WEAK TYPE R

 

[tommyk90 5,000+ posts]

Not enough power. With impedence rise you could be seeing less than 400 watts per sub. Especially with the amp running at 2 ohms.

Get some pics of the install and maybe we can help you out with a better box design.

 

[god_speed36 10+ year member]

I have a JVC AVX2 dvd. the gain on the amp was about 3/4 all the way up. I just turned it all the way and nothing. the head unit is at 80hz and I turned the hipass filter off. when they were wired for .5 ohms it was a little louder but i didnt run it long, wasnt sure the amp could take it

 

[itzme218 10+ year member]

checked H/U sub control?