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View Full Version : I think i may need a new box..



GrnZ28
07-12-2009, 04:54 PM
Ok , i have a 95 Talon which is a hatchback car. I have a 12" Type R in a prefab ported box, which i think is my problem. Im powering it with an alpine mrp-500 @2ohms, so it should be getting around 500watts. It seems no matter whenever i turn up for about 20secs , the sub is just starting to smell , like the voice coils are heating up. Gains are all set properly and wiring is right. Could my prefab box be hurting my setup this bad ? If so what are your ideas if you were in my position?

Also everything is almost brand new,along with the new alpine deck i got in the car.

Pic of setup

http://i44.photobucket.com/albums/f43/ry-n-jess/IMG_0571.jpg
http://i44.photobucket.com/albums/f43/ry-n-jess/IMG_0574.jpg
http://i44.photobucket.com/albums/f43/ry-n-jess/IMG_0573.jpg

mazdakid
07-12-2009, 05:34 PM
youre probably playing under tuning in the pre fab.

RAM_Designs
07-12-2009, 05:38 PM
How are the gains set, what HU do you have(more importantly, RCA voltage), and at which volume is the HU turned to when you start smelling the sub?

99grandprixGT
07-12-2009, 05:38 PM
how did u set the gain? dmm?

GrnZ28
07-12-2009, 05:56 PM
Headunit is a Alpine CDE-102. I adjust the gain and settings by ear. Turn the headunit up to 25 and you start smelling the sub.

mazdakid
07-12-2009, 05:57 PM
does it start to smell on all songs or just really low ones?

dbeez
07-12-2009, 06:01 PM
sub up port up will sound better in there and yes a custom built box will sound better also and a prefab it is probably tuned 40-45hz most are anyways...or higher

power-fanatic07
07-12-2009, 06:03 PM
prefab ftl. take the time and build a good ported and you will be very pleased.

T3mpest
07-12-2009, 07:46 PM
The box has absolutely no effect on the coils. If the coils smell you are sending too much power to the sub, regardless of the enclosure. Try setting your gains with a DMM. The only other thing I can think of is if the subs new you might just be smelling the excess glue being burned off, but that shouldn't last for more than a few quick play sessions.

treadburner
07-12-2009, 07:49 PM
that amp is not enough to over power a type r fyi

av8ter
07-12-2009, 08:06 PM
You're just clipping the amp's output on some songs. Turn it down a bit and build yourself a 2.5cuft box tuned to 34hz.


Kevin

GrnZ28
07-12-2009, 11:44 PM
On low notes pretty much. (Jeezy,gucci,lil jon) It seems as it hits the highs hard, but has no-weak low end. But then again im only pushing 500watts so i cant expect much. But for my little car this setup should rock, so im leaning towards the box.

dbeez
07-13-2009, 12:48 AM
good an do sub up port up you'll be glad you did...

GrnZ28
07-20-2009, 12:00 AM
Well if the box is too small and not tuned properly, the sub is basically relying on its coils for suspension which would cause them to heat up and make the smell. Just wanted another opinion.

mlstrass
07-20-2009, 02:52 AM
clipping and/or playing below tuning. Build another box tuned lower or raise the SSF on your amp...

mazdakid
07-20-2009, 10:06 AM
The box has absolutely no effect on the coils. If the coils smell you are sending too much power to the sub, regardless of the enclosure. Try setting your gains with a DMM. The only other thing I can think of is if the subs new you might just be smelling the excess glue being burned off, but that shouldn't last for more than a few quick play sessions.
So if my box is tuned to 45hz, and im playing 30hz tones all day and start smelling something, its not the coils that stink?

mlstrass
07-20-2009, 10:27 AM
So if my box is tuned to 45hz, and im playing 30hz tones all day and start smelling something, its not the coils that stink?

that'll get em hot for sure...

pawn man
07-21-2009, 12:40 PM
clipping

I_no_mad
07-21-2009, 12:51 PM
So if my box is tuned to 45hz, and im playing 30hz tones all day and start smelling something, its not the coils that stink?

Funny thing is, that is not due to the box...

It's due to the overpowering of the sub. Playing a 30hz tone in a box tuned at 45hz would require a hell of a lot less power to reach mechanical failure...

So it is the power burning the coil. A box can not burn a coil.

But I understand your point. A box can lead you to burn your coils with power...

Team WP Bill
07-21-2009, 01:05 PM
Funny thing is, that is not due to the box...

It's due to the overpowering of the sub. Playing a 30hz tone in a box tuned at 45hz would require a hell of a lot less power to reach mechanical failure...

So it is the power burning the coil. A box can not burn a coil.

But I understand your point. A box can lead you to burn your coils with power...

This

rizzle1
07-21-2009, 01:19 PM
im installing a amp and when i connect the amp jacks the amp give me a red led protector light. do i need to groung my amp jacks? if so where? installing in a 97 cutlass surpreme

dappa5
07-21-2009, 04:43 PM
:confused:
im installing a amp and when i connect the amp jacks the amp give me a red led protector light. do i need to groung my amp jacks? if so where? installing in a 97 cutlass surpreme:confused:


look out guys :crap: it's another RANDOM THREAD JACKING

lock your threads up @nite and post often to avoid this happening to your thread :crap:

Random1010
07-21-2009, 06:01 PM
The box has absolutely no effect on the coils. If the coils smell you are sending too much power to the sub, regardless of the enclosure. Try setting your gains with a DMM. The only other thing I can think of is if the subs new you might just be smelling the excess glue being burned off, but that shouldn't last for more than a few quick play sessions.

Not true at all.

T3mpest
07-21-2009, 09:29 PM
So if my box is tuned to 45hz, and im playing 30hz tones all day and start smelling something, its not the coils that stink?

If someone is running the sub way below tuning and running into coil stink they are an idiot because they probably bottomed the thing out and screwed the suspension long before it started to smell. If you coil smells you ran out of thermal power handling. Other than playing notes near tuning, which lowers the airflow around the coil you can't really effect thermal power handing that much. At least not on music where the impedence rise of the box wont' come into play. If the coils smell you sending the sub too much power. Unless your playing right at music that is all right at tuning where nothings moving you can switch boxes all day and only effect mechanical power handling.

Comp12s
07-23-2009, 12:12 AM
I Have A Type-r Dual 2 Swr-1221d And I Have A 1 Cu. Ft. Sealed Enclosure In My Pickup And It Sounds Good I Dont Smell Anything Burning But It Does Shut Off When I Play It Too Loud, I Dont Kno What It Could Be