Type R Burping...Go Ported?

[m98bigshot 10+ year member]

Hey guys, just need a little advice here. I recently got an Alpine Type-R 12" with an Alpine MRD-605 running to it. When I try to crank the volume my sub burps and almost sounds like it clips sometimes. Right now its in a box thats ~1.25 cubes, sealed. I'm thinking of building a ported box with Moe Lester's 1.75 cubic inch plans. Will this solve my burping problem? Thanks in advance for your help.

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[HotCarl 10+ year member]

did you set your gains with a DMM?

 

[HotCarl 10+ year member]

id build the box either way too, use one of his 2 cube plans.

 

[trow100 10+ year member]

^^ make sure your gains are set correctly and your not clipping the amp, cause thats never good.

 

[tRiGgEr 5,000+ posts]

I bet you're bottoming out the speaker. Does it sound like a horrible clicking grinding sound? Passing the speakers X-mech will do that...

A ported box would just yeild more output and you would not need to crank it so loud.

 

[Polecat 5,000+ posts]

I agree, sounds like your pushing it past mechanical limits...

 

[vosschs 5,000+ posts]

id build the box either way too, use one of his 2 cube plans.

mine was 2.1 at 31.5 hz..... 39 inches of port iirc... sounds amazing

 

[m98bigshot 10+ year member]

Nah, its not really a horrible grinding...and no, I haven't checked my gains, what should they be set at? I'm a little new, so if you could bear with me that'd be great. I'm running a Pioneer head unit, and the sub started doing it today when the volume was at 40 out of 60. I've been taking it easy on it for now so hopefully I haven't done any damage.

 

[B5inVA 10+ year member]

Thats exactly the same setup i'm getting!

How do you like it? besides the burping sound? or does it do that all the time?

Rico

 

[m98bigshot 10+ year member]

Thats exactly the same setup i'm getting!
How do you like it? besides the burping sound? or does it do that all the time?

Rico

I absolutely LOVE this set-up, one Type-R is plenty for me, it bumps HARD! The burp only happens when I push it hard, like on a super-bass EQ on my HU. Other than that it's constant bass without a problem. You'll love it too, and if you have room to go ported, do it. I'm running sealed and it's amazing, but ported is gonna be so much better, at least from what I heard. I listen to alot of rap and like some heavy bass, so I'm going to try my luck at building a ported box from Moe Lester's plans. (FREE in the box building forum!) You will definately get your money's worth from this system! Good luck with it and let me know how you like it.

 

[PatFitz9 10+ year member]

I absolutely LOVE this set-up, one Type-R is plenty for me, it bumps HARD! The burp only happens when I push it hard, like on a super-bass EQ on my HU. Other than that it's constant bass without a problem. You'll love it too, and if you have room to go ported, do it. I'm running sealed and it's amazing, but ported is gonna be so much better, at least from what I heard. I listen to alot of rap and like some heavy bass, so I'm going to try my luck at building a ported box from Moe Lester's plans. (FREE in the box building forum!) You will definately get your money's worth from this system! Good luck with it and let me know how you like it.

i think you just found your problem. read the gain setting sticky in the amplifiers sections and your sub will love you as much as you love her.

 

[SAG3 5,000+ posts]

what does the burp sound like and how can you hear your sub clipping?

 

[bimma85 5,000+ posts]

u=want too much from sealed 12" r

gain=way too high