Subwoofer enclosure: Insulation filling questions

[stured]

Well ive just fixed my sub (Replaced the 100watt amp with 1500 watt toxic amps :cool:), im waiting on some cable to upgrade the earth so was wondering if i should fill my sub box with insulation while i wait?

Currently have a 1500 watt toxic amp and a 1200 watt JBL sub in a home made enlosure, if i remember correctly i made a sealed enclosure to the cubic size specified on some website linked from here. Ive heard insulation filling is only for boxes that are too small? Is this true or is it best to just do it anyway?

Also, do i just layer the insulation, cutting circles in the top layers for the cone to completly fill it? Does it matter if it touches the cone etc?

Cheers guys!

[danny-vts]

put some loft insulation in there but dont go crazy and fill the whole box , just enough to cover all sides.

[stured]

oh...so basicaly lineing the sides (glueing 1 sheet) with approx 100mm loft insulation is the aim? Cheers :)

[danny-vts]

you dont need sound deadening mats in there if your going to put insulation inside the box.
in the past when i used to build my own installs i put loft insulation in them, but only enough to line the sides

[stured]

You mean i wouldnt need sound deadening in the rest of the car? (IE stuffing the boot etc) i woulda though it stil make a difference :S. Anyways ive siliconed all the joints and lined the sides with 50mm loft insulation. There was loads so i cut some up ready to fill the box (Avoiding touching the speaker/packing tightly) as ive read on one of my googles that it makes two different bass responses.....so il try both as theres no real harm :).

Just waiting on some ring terminals so i can put the earth onto the back seats (the catch for the bit you sit on) as its currently on the boot catch :S and its raised the catch up.

[MJ05LLY]

Well ive just fixed my sub (Replaced the 100watt amp with 1500 watt toxic amps :cool:), im waiting on some cable to upgrade the earth so was wondering if i should fill my sub box with insulation while i wait?

Currently have a 1500 watt toxic amp and a 1200 watt JBL sub in a home made enlosure, if i remember correctly i made a sealed enclosure to the cubic size specified on some website linked from here. Ive heard insulation filling is only for boxes that are too small? Is this true or is it best to just do it anyway?

Also, do i just layer the insulation, cutting circles in the top layers for the cone to completly fill it? Does it matter if it touches the cone etc?

Cheers guys!

If your box is to spec you do not need to put any insulation in the box, you don't need to trick the woofer into thinking it's in a different size enclosure

[danny-vts]

sorry i read it wrong lol, yes sound deaden the rest of the car.
i thought u meant sound deadening mats AND insulation in the box lol.

[liam_b]

If your box is to spec you do not need to put any insulation in the box, you don't need to trick the woofer into thinking it's in a different size enclosure

he speaks the truth

[stured]

Well this is good! ive already done it :(. been a long weekend so havent had chance to try it....will it have a bad effect?

[Tontsy]

he speaks the truth

No one will listen to you about audio advice :hug:

[loudandproud205]

Not needing because its the correct dimensions isnt always correct and lots still fill it with the same stuff as you would find in pillows as it can make the bass different when you play different frequencies.

Allows the harsh ones to be less harsh if you get what I mean

[MJ05LLY]

Not needing because its the correct dimensions isnt always correct and lots still fill it with the same stuff as you would find in pillows as it can make the bass different when you play different frequencies.

Allows the harsh ones to be less harsh if you get what I mean

Set up your equaliser and audio settings differently then.
Much easier than playing with pillow stuffing.
Companies don't go through hassle of testing enclosures and telling you their best box sizes for no reason.

[loudandproud205]

You will still get spikes thou, its the best for the sub at set frequencies there is only so much the EQ will do.

Plus we all play different music with different peaks, so it works well at softening them.

I had it in my Type X with 7998r and EPX 2, it was great when set up on a term lab but it wasn't quite right to the ear on other types of music even with different settings.