Reasons to have my sealed box custom built

[pro-rabbit 5,000+ posts]

And again it is the 12 inch G3, it is rated at 375 RMS but I've heard it can handle more so I'm throwing 500 watts RMS to it.

1.1-1.3ft3 sealed with around 300-400rms should do just fine. With a setup like that(I have done a few in the past), most say they want SQ but I had each customer come back wanting to go bigger in 3-4 weeks haha.

They did sound good though and are a good driver.

 

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Where can I get a good silicone sealer?

Just about anywhere.

 

[ckunke002 10+ year member]

1.1-1.3ft3 sealed with around 300-400rms should do just fine. With a setup like that(I have done a few in the past), most say they want SQ but I had each customer come back wanting to go bigger in 3-4 weeks haha.
They did sound good though and are a good driver.

 

---------- Post added at 11:44 AM ---------- Previous post was at 11:44 AM ----------

 

Just about anywhere.

Go bigger as in bigger box or sub or what?

 

[whitedragon551 5,000+ posts]

Prefab sealed is fine. Just seal the corners well. Also if you need 1.1 cubes look at grabbing a bag of polyfill. It helps tame the impedence rise as well as would help you get to that magic box size without rebuilding. It makes the sub think its in a larger box. Ported is where you run into huge issues with prefabs.

I run about what you are considering to my substage and have had no issues so far.

 

[Why So Cereal? 5,000+ posts]

Prefab sealed is fine. Just seal the corners well. Also if you need 1.1 cubes look at grabbing a bag of polyfill. It helps tame the impedence rise as well as would help you get to that magic box size without rebuilding. It makes the sub think its in a larger box. Ported is where you run into huge issues with prefabs.
I run about what you are considering to my substage and have had no issues so far.

This.

 

[ckunke002 10+ year member]

Prefab sealed is fine. Just seal the corners well. Also if you need 1.1 cubes look at grabbing a bag of polyfill. It helps tame the impedence rise as well as would help you get to that magic box size without rebuilding. It makes the sub think its in a larger box. Ported is where you run into huge issues with prefabs.
I run about what you are considering to my substage and have had no issues so far.

Are you suggesting using polyfill if I can't find a 1.1 and can only get a 1 cubic foot box? Or should I use polyfill in any scenario with a box? What does it do exactly? And what is impedance rise?

 

[Why So Cereal? 5,000+ posts]

Are you suggesting using polyfill if I can't find a 1.1 and can only get a 1 cubic foot box? Or should I use polyfill in any scenario with a box? What does it do exactly? And what is impedance rise?

Polyfill, from my understanding, slows down the waves, thus making the sub think its in a larger box.

Impedance rise: the resistance u read with a DMM is with the sub at rest, as the sub moves, the magnetic field in relation to the magnet and the moving coil (motor) causes increased resistance as the back pressure changes due to changing back pressure

I'm no expert but thats how I've come to understand those.

 

[ckunke002 10+ year member]

Polyfill, from my understanding, slows down the waves, thus making the sub think its in a larger box.
Impedance rise: the resistance u read with a DMM is with the sub at rest, as the sub moves, the magnetic field in relation to the magnet and the moving coil (motor) causes increased resistance as the back pressure changes due to changing back pressure

I'm no expert but thats how I've come to understand those.

So do I still want just a 1 c. foot box with polyfill or try to factor in displacement and then throw in polyfill? Also how much of it do I want to put in the box?

 

[Why So Cereal? 5,000+ posts]

So do I still want just a 1 c. foot box with polyfill or try to factor in displacement and then throw in polyfill? Also how much of it do I want to put in the box?

I would, its pretty cheap at walmart in the crafts section, you can always take it out and see which way you like it best as well.

As for how much, I've heard about 1lb to 1.5lbs per cube.

 

[ckunke002 10+ year member]

I would, its pretty cheap at walmart in the crafts section, you can always take it out and see which way you like it best as well.
As for how much, I've heard about 1lb to 1.5lbs per cube.

You said "I would"....was that in response to "do I still want just a 1 c. foot box with polyfill or try to factor in displacement and then throw in polyfill"??

If you were in my position would you try to get a 1 cube box or a 1.1 or maybe 1.2 cube box?

 

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i'll use polyfill either way to test it out.

 

[ckunke002 10+ year member]

And do you know what the DC guy was talking about how all his customers come back for something "bigger"? I don't want to buy the wrong thing the first time so I want to take his advice, but I have no idea what he's talking about lol.

Do bigger sealed boxes get louder or something? Should I go a bit above what is rated?

 

[Why So Cereal? 5,000+ posts]

You said "I would"....was that in response to "do I still want just a 1 c. foot box with polyfill or try to factor in displacement and then throw in polyfill"??
If you were in my position would you try to get a 1 cube box or a 1.1 or maybe 1.2 cube box?

 

---------- Post added at 10:10 AM ---------- Previous post was at 10:09 AM ----------

 

i'll use polyfill either way to test it out.

Oh, read the question wrong. whether you calculate the driver or not wont really make much difference. it's still roughly 1 - 1.5lbs of polyfill.

In response to what I would do in the position, I personally would just get a prefab closest to 1 cube or maybe a little more if you can find one and still try the polyfill.

 

[Why So Cereal? 5,000+ posts]

And do you know what the DC guy was talking about how all his customers come back for something "bigger"? I don't want to buy the wrong thing the first time so I want to take his advice, but I have no idea what he's talking about lol.
Do bigger sealed boxes get louder or something? Should I go a bit above what is rated?

By bigger, I think he meant more subs, more power, louder in general. But, you'd have to have him answer that for sure.

Bigger sealed boxes, in my experience increase efficiency (to an extent). But no need to go crazy with a huge sealed box. Just use the site recommendation.

 

[ckunke002 10+ year member]

Oh, read the question wrong. whether you calculate the driver or not wont really make much difference. it's still roughly 1 - 1.5lbs of polyfill.
In response to what I would do in the position, I personally would just get a prefab closest to 1 cube or maybe a little more if you can find one and still try the polyfill.

Great, thanks for all the wisdom! I'm off to set up a system!

 

[ckunke002 10+ year member]

Just give me your personal preference on this.

I have a subaru wrx, no trunk, the whole car is the cabin. I want noticeable bass that that sounds musical, but isn't quiet either. Basically I want a tight bass over a booming bass, but I want it to be able to stand out a lot in bass heavy songs.

Would you go the route that I'm going with just 1 500 watt sub in a sealed box, or wait until I can afford a 2nd sub and get 2, or do something else?

 

[pro-rabbit 5,000+ posts]

Yea, what I meant by bigger is that you will want louder/better.

This "hobby" is very addictive to most and once you get used to a setup you want to take the next step.