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Old 07-16-2012, 10:05 AM   #1
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Polyfilled the speaker boxes....wow



world of a difference, easy to do and cheap. Just a thank you to all those who have contributed to the previous threads about this as it helped my decide to do it and it cleans up the sub and adds to the sound bar quality.

Thanks!

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Old 07-16-2012, 10:48 AM   #2
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I have done poly-fil in the sound bar, and honestly, I cannot tell a bit of difference. Maybe I didn't put enough in? Maybe the difference isn't that noticeable? I don't know...

How much did you stuff in there? Cram the hell out of it? Or just moderately stuff it around within the sound bar?

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Old 07-16-2012, 03:00 PM   #3
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I have done poly-fil in the sound bar, and honestly, I cannot tell a bit of difference. Maybe I didn't put enough in? Maybe the difference isn't that noticeable? I don't know...

How much did you stuff in there? Cram the hell out of it? Or just moderately stuff it around within the sound bar?
I did it too and I cannot stress enough how better the sound is. I used one pillow from walmart, and I placed all of it in the soundbar plus subwoofer on my JKUS 2009. For the soundbar, it's packed medium-tight I'd say.
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Old 07-16-2012, 03:40 PM   #4
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Help me understand the theory behind this move? Also, was there a noticable improvement with the stock speakers? I have the subwoofer system, too.

Thx from CT
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Old 07-16-2012, 03:46 PM   #5
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I guess I can try to add more to it. I only used about 1/2 of the package. As it stands, I can't even really tell that there are speakers behind me... From all of the complaints, maybe this is why Jeep switch to Alpine instead of these Infinity speakers? I wonder if the stealership would do a replacement of sorts...
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Old 07-16-2012, 03:52 PM   #6
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Why would you want to go from stock to stock? Aftermarket
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Old 07-16-2012, 04:15 PM   #7
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I guess I can try to add more to it. I only used about 1/2 of the package. As it stands, I can't even really tell that there are speakers behind me... From all of the complaints, maybe this is why Jeep switch to Alpine instead of these Infinity speakers? I wonder if the stealership would do a replacement of sorts...
I'd say go for it, I used all the pillow for soundbar and subwoofer (approx half in the soundbar, half in subwoofer) and then the change was very noticeable. I'm not an audiophile, but I noticed the difference.
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Old 07-16-2012, 06:35 PM   #8
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i can't get the damn sub out of the enclosure! epic force? or does the entire housing need removed first?

i removed the screen and the sub screws... won't budge
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Old 07-16-2012, 06:58 PM   #9
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Which speakers do you guys have in your bars? My build sheet reads 7 speaker Infinity sound system. I like the sound, but the bars seem quiet - wondering if this would help.
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Old 07-16-2012, 07:00 PM   #10
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Are there any good replacement speakers that will help with the stock radio, I don't have the sub woofer?
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Old 07-16-2012, 07:34 PM   #11
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Are there any good replacement speakers that will help with the stock radio, I don't have the sub woofer?
I have the same stereo and just bought the kicker plug and play speakers (77kick10 p/n) and will install later this week. I am also going to poly fill and if there is enough space will also dynamat it. I will add another reply when it's done.
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Old 07-16-2012, 08:25 PM   #12
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Adding polyfill to a speaker or sub enclosure will make it sound like a larger speaker and enclosure. I did this to the stock sub in my F150... instead of the dull tinny bass at medium to high volume, it gave it a much deeper/richer tone.

Might have to try this on the Jeep sub. How much of a difference is it making on the sound bar?
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Old 07-16-2012, 08:40 PM   #13
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Did this over the weekend, took all of thirty minutes to do the bar and the fronts, drivers side was a pain without pulling the whole dash but possible. The improvement is astonishing, can feel the music in the seats not unlike the factory sub in my tj. You get a great tube amp sound
Packed them to the gills, fronts tight, bar all the way though with a dowel, two bags of pillow fill from michaels for $7
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Old 07-16-2012, 08:46 PM   #14
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are you guys serious? I can buy this stuff at Michaels? Whats the "crafts name" for it? i HATE the stock speakers, actually dont even have the radio on because they are so bad.

I want Tires first, after tires ill do the sound system but until then ill do ANYTHING that helps it out
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Old 07-16-2012, 08:48 PM   #15
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Grab an old nasty-stained pillow (not a down one, though) from your closet and tear it open.
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Old 07-16-2012, 08:49 PM   #16
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Do not over-fill them though... keep the polyfill from actually touching the speaker cones.
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Old 07-16-2012, 08:49 PM   #17
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Quote:
Originally Posted by Saranrap
are you guys serious? I can buy this stuff at Michaels? Whats the "crafts name" for it? i HATE the stock speakers, actually dont even have the radio on because they are so bad.

I want Tires first, after tires ill do the sound system but until then ill do ANYTHING that helps it out
Physics are simple, the increased density fools the speaker into believing the enclosure is larger, did it years ago in band pass boxes to make an 8 sound like a 12. The price makes it absurd. It is called polyfill and is in the pillow aisle by the yarn
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Old 07-16-2012, 08:54 PM   #18
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world of a difference, easy to do and cheap. Just a thank you to all those who have contributed to the previous threads about this as it helped my decide to do it and it cleans up the sub and adds to the sound bar quality.

Thanks!
World of difference? Hardly. It makes a minor difference. It's so cheap to do and takes so little time, there's no reason NOT to do it.

Also, polyfill is NOT the same as acoustifill. Don't let other people fool you.
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Old 07-16-2012, 09:29 PM   #19
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i can't get the damn sub out of the enclosure! epic force? or does the entire housing need removed first?

i removed the screen and the sub screws... won't budge
Use an allen key (or something similar) and hook the speaker through the hole at the bottom to pull it out. (Or so I've heard).
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Old 07-16-2012, 10:08 PM   #20
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I have done poly-fil in the sound bar, and honestly, I cannot tell a bit of difference. Maybe I didn't put enough in? Maybe the difference isn't that noticeable? I don't know...

How much did you stuff in there? Cram the hell out of it? Or just moderately stuff it around within the sound bar?
I stuffed as much as I could without having it in the area where the speaker magnet is supposed to go. I stuffed it as deep into the sound bar and sub enclosure as I could. Used almost an entire bag of the stuff they sell at Walmart.

I'm sure if you have an ear for high quality sounds systems or a Ph.D in sound engineering it might not be that noticeable, but for me it is, considering I put all of about 25 minutes and $10 into the "mod" if you can call it that, it was well worth it.
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Old 07-16-2012, 10:29 PM   #21
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i can't get the damn sub out of the enclosure! epic force? or does the entire housing need removed first?

i removed the screen and the sub screws... won't budge
That's all you need to do to get it out. You might need to get a screwdriver and love tap the edge to get it to break what ever seal is on there.

The reason I got in there was I read over on JK forum that if you swap the 2 plugs sometimes it can help get you better bass. It didn't really work for me. Here's the write-up on it. Quick, awsome & free mod for Infinity sound system!!!

After I tried that mod my speaker really didn't want to go back in. Because of a magnetic field is what it felt like. You might have something like that happening the other direction?
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Old 07-16-2012, 10:44 PM   #22
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I just did the kicker speaker upgrade and poly fill today too.

It made a huge difference!
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Old 07-17-2012, 08:23 AM   #23
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Polyfill does work.

"An isothermal process occurs once the polyfill has been added. As the air passes through the polyfill, the fibers wiggle and cause some of the energy created by the airspring to be dissipated as heat. This heats the surrounding air molecules warmer, causing the air to become less dense. Being that sound passes easier through a denser medium, the speaker interacts with your enclosure as if it is larger than it actually is."

That said you need to not pack it in too tight, especially if your stuffing the sub tub. You want the polyfill to be able to "move". If you pack it too tight, you would essentially lower the volume inside of the enclosure. That will negatively affect your bass as the volume of the sub tub will be smaller.
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Old 07-17-2012, 08:37 AM   #24
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World of difference? Hardly. It makes a minor difference. It's so cheap to do and takes so little time, there's no reason NOT to do it.

Also, polyfill is NOT the same as acoustifill. Don't let other people fool you.
Why can't I edit my own f*cking post? Anyway, I was referring to the soundbar in my comment above, not the sub.
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Old 07-17-2012, 12:15 PM   #25
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Same physics apply to the soundbar.
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Old 07-17-2012, 12:18 PM   #26
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Same physics apply to the soundbar.
Too bad it's a negligible difference compared to stuffing a proper enclosure.
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Old 07-17-2012, 05:42 PM   #27
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That's all you need to do to get it out. You might need to get a screwdriver and love tap the edge to get it to break what ever seal is on there.

The reason I got in there was I read over on JK forum that if you swap the 2 plugs sometimes it can help get you better bass. It didn't really work for me. Here's the write-up on it. Quick, awsome & free mod for Infinity sound system!!!

After I tried that mod my speaker really didn't want to go back in. Because of a magnetic field is what it felt like. You might have something like that happening the other direction?

thanks for the tips. i used the plastic tools crutchfield included in my order [for the dash] but it still wouldn't budge. i'll try the allen key technique and a love tap lol now i know it will come out. thanks all!

that sub sounds so pathetically weak.. IMHO, it doesn't even produce real subwoffer sounds..
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Old 07-18-2012, 09:45 AM   #28
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Works great but still sneezing fibers...
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Old 07-18-2012, 12:20 PM   #29
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Also, polyfill is NOT the same as acoustifill. Don't let other people fool you.
Stupid question - please define acoustifill. Foam of some sort? Brand name? Source and most importantly $$$ ?
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Old 07-18-2012, 12:55 PM   #30
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Stupid question - please define acoustifill. Foam of some sort? Brand name? Source and most importantly $$$ ?
Sorry, it's Acousta-stuff. You can find it at Parts Express.

Acousta-Stuf Polyfill 1 lb. Bag 260-317

For the soundbar, I wouldn't bother with the more expensive Acousta-Stuff, but definitely for any real enclosure made out of wood or MDF.

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