SQ Guys Who Went From Sealed to Ported?

[dvrmstrng 5,000+ posts]

huh yeah time to throw the 18" Q in 4 cubes sealed and see how it sounds

 

[Immacomputer 10+ year member]

Peoples opinions may differ and i have heard a nice TC 15 in a low tuned ported box that sounded excelent, but it did not have the higher frequency punch, If you tune your ported box for higher frequencies they will lack lowend etc...The Sealed is more balanced but ALOT less efficient. Ported can sound good as well so it is not always a straight forward easy decision.

A majority of the time, a loss of upper frequency extension is caused by the enclosure being too big, high inductance, or high mms of the driver (usually due to a long coil). You will usually see this with subs that have a ton of throw or really high xmax.

 

[Justintoxicated 10+ year member]

A majority of the time, a loss of upper frequency extension is caused by the enclosure being too big, high inductance, or high mms of the driver (usually due to a long coil). You will usually see this with subs that have a ton of throw or really high xmax.

Yea I even notice going sealed to sealed my TC's have a bit less upper bass than the Assassin I love so much. But the lowend is vast in comparison. They are both in the same small enclosure .65cuft before displacement but I added polyfil when I put the TC's in to see if it helps. I might try removing it some day but for now I'm enjoying it., THey are definately not in too large of a box though.

My lack of really low bass in the ported box is because of the way it is tuned I believe.

 

[WhoSayWho? 5,000+ posts]

anyone else?

 

[truckstoy 10+ year member]

i just went to ported from sealed, it sounds great (thanks BJ Fisher) box is built to spec and it sounds just as clear as sealed but with way more output. it is exactly what i was looking for!

truck

 

[hoxie08 5,000+ posts]

helpful thread. im building my ported box for a jl sub as we speak. i'll let you know if i notice anything.

 

[hardhitta47 10+ year member]

I've got my 15" Avalanche in a low-tuned ported box right now, and the lows are just insane, even though I really need a sturdier box. Mine flexed so bad it is leaking and basically coming apart inside.

I'm dying to try two of these sealed though, and at least doubling the power. I've seen several people say that the Avas are "supposed" to be insane sealed, but there's only one way to find out. They have an Fs of around 16 Hz.

If I had the room for 2 15's ported, I would do that, but that's not gonna happen in the trunk of my civic. I'm betting that with the right amount of power, in the right airspace, 2 sealed will give me at least as much output as the single 15 ported with even better sq. That would be ideal.

I think, from my very limited experience mind you, that for a single-sub setup, especially 12" and smaller, that low-tuned ported is the way to go. But what does going sealed, while doubling the cone area and the power, give you versus that? That's what I'm trying to find out too. I'll know the answer in the next few months. (at least in respect to the specific woofer I'm using)

 

[Justintoxicated 10+ year member]

I've got my 15" Avalanche in a low-tuned ported box right now, and the lows are just insane, even though I really need a sturdier box. Mine flexed so bad it is leaking and basically coming apart inside.
I'm dying to try two of these sealed though, and at least doubling the power. I've seen several people say that the Avas are "supposed" to be insane sealed, but there's only one way to find out. They have an Fs of around 16 Hz.

If I had the room for 2 15's ported, I would do that, but that's not gonna happen in the trunk of my civic. I'm betting that with the right amount of power, in the right airspace, 2 sealed will give me at least as much output as the single 15 ported with even better sq. That would be ideal.

I think, from my very limited experience mind you, that for a single-sub setup, especially 12" and smaller, that low-tuned ported is the way to go. But what does going sealed, while doubling the cone area and the power, give you versus that? That's what I'm trying to find out too. I'll know the answer in the next few months. (at least in respect to the specific woofer I'm using)

It should double the output at all frequencies, so it may be louder over all but maybe not as loud at the particular tuned frequency of a ported box (although it is possible depending on the sub and enclosures etc) I'd take 2 over 1 ported anyday for most SQL subs if you have the power and money //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[bassaholic 10+ year member]

I think it depends alot on the sub being use too cause i have a 12w6v2 tuned @ 31hz in 2.0 cu ported box and it sounds very peaky in the 40hz - 50hz region and the low end (30hz or lower) isnt that great but overall its loud as hell(flex doors and windscreen) with about 600 - 700 watts. I had it in a seal but a plywood box 1.25 cu sounded outstanding and less muddy and boomy and sounded better with more wide range of music but downfall is output.