Im having an issue. I have a alpine MRP M500 running one Alpine SWR-1242d 12" Type R. Now this sub should be able to take everything this amp can give. But i am getting this smell from my sub or amp not sure which one. It smells Like some thing is melting or overheating. I am running sub at 2 ohms. And Box is 2 cubic feet, with 3" port tuned to 33 hrz. I am getting pissed everything is brand spanking new.

 

what do your settings on the amp look like? how about on the radio?

 

My gain is set at nom which is half my bass eq is set at 2 and my lp filter is all the way down. My HU has 6 volt pre outs. And the HU sub control is set at 0.

 

I use to run my MRP-500 off two Alpine 10' 2ohm subs. Now im running a jl w6 .. anyways point being i got a similar set up.. Your going to have to break these things in for sure. Your LP filter should be about 120(hz) your bass eq should be sitting around 8db and your gain around 0.5v to run that sub properly. What your smelling is your sub for sure this is typically just odors given off by the components when under heat and not necessarily an indication that something has been damaged..

 

Once you break it in for a bit you should be fine mine smelled like burnt electrical when they were new.

 

Treo amp treo subs OR treo subs and alpine amp... Best

 

I mean you can imagine the manufacture of alpine tests their stuff with there own product so i guess brand to brand would sound the best .. when you switch up the set like me with alpine amp/jl sub i had experience in the past n it sounds wicked but with saying that im heard some dirty combos.

 

Well you are the first one that has said to turn stuff up. Everyone else has said turn it down cause im clipping. Now i dont know who to believe. I know this sub can handle all the power this amp can give out. I am just really confused what to do if i turn everything down like what people are telling me i have hardly no bass.

 

I hit 148 db with 2 type r's 12's trust me they can handle a lot in a ported box. They do not like a lot of power in a sealed box I blew one up using half the watts I normally used..

 

Well thats what i thought my box is 2 cubic feet ported. everyone over on caraudioforum is telling me i cant turn my gain up at all or it will be clipping which i am wandering about. The amp is only 4v to .2v and my HU output is 6v. So i am very confused.

 

I would turn your gain all the way up and just back it up a few hairs and make sure your cross over gain is about 50 if that amp has it or the radio if its on a sub output..if the htz are too high sub won't like it

 

Im not trying to be a dick but. Are you freaking kidding me. How can you tell me my gain needs to be almost all the way up and everyone else is telling me to turn it down. And my cross over is always set at about 50 or so.

 

I had a lanzar 4000d hooked up to 2 type r full gain hit 148 db sorry but your amp doesn't put out a quarter of that if its hooked up right you should be able to turn your amp up almost all the way.I would make sure you break the speakers in for a bit first

 

Well i have had the sub and amp for about 3 weeks. And i have the sub running 2 ohms into the amp. Which i know the amp will handle.

 

hold up! .. How do you have the sub wired up in the box?

 

in parallel.

 

If your gonna be blasting it for a long time you might want to turn your gain down some 1/2 to 3/4 if it starts to smell you know the speaker is getting warm turn it down or let it cool. When i had the punch 500 hooked up to one they would get hot after a half hour or so but i normally just did competitions where it would be a 5 sec blurp.

 

Yea my work commute is a hour and 45 mins. and i sometimes listen to it turned up the whole way but not very often.

 

Why did you ask how i had sub wired.

 

Sounds like you need 2 12's and you could still use that amp and be able to crank it for hours. My DD set up was 2 r's and punch 500 it would consistently hit 143 db and would play for hours with no problems for the 3 years i had them. It's all in the box mine had weeks of work put in to it. I had all corners rounded with molded PVC and was urethaned it was smooth as glass. The faster you get the air out the louder its gonna be.

 

Well i just made a smaller box and now i cant fit a bigger port in it cause i was tired of not having room in my trunk for tools and what not for work.

 

ive gone through 4 type r 12s. they cant handle what they say they can handle. and my trunk smells like burning rubber.

contact who ever you bought the type r through, it costs 50 dollars to get it fixed.

 

i ordered them from amazon.com

 

Haha what kinda of box ? These were the only speakers i owned that i couldn't blow had the lanzar 4000d at 1 ohm full gain and they wouldn't blow Lol my car was droppin to 8 volts only reason i turned it down haha

 

Reason i asked is because your amp is 2ohm stable and your sub is dual 4 ohm.. do you have it wired like soo

Subwoofer Wiring Diagrams, One 4 ohm Dual Voice Coil (DVC) Speaker

If not i would suggest changing it.