15" Mag Sealed/Ported?

[chibahawk 10+ year member]

What would be the sound difference or loss of quality in these set-ups?

I've got a Rockford Fosgate 801S Punch (850W @ 4ohm) for the D2 Mag 15"

I was thinking of doing 2.5 sealed,

Or a 3.7 sealed with a 10" long 4" flared tube port.

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[audioholic 5,000+ posts]

What would be the sound difference or loss of quality in these set-ups?
I've got a Rockford Fosgate 801S Punch (850W @ 4ohm) for the D2 Mag 15"

I was thinking of doing 2.5 sealed,

Or a 3.7 sealed with a 10" long 4" flared tube port.

That's called ported.
If you are talking about the old Mag, port it.

 

[XaznKewLguyX 10+ year member]

probably will need a little bit more powr though.

 

[pioneerpimp 5,000+ posts]

no i dont think he will. theyre very efficient.

 

[audioholic 5,000+ posts]

Yeah, everyone use to say they were efficient. But now that the new one is coming out, the old one is called 'inefficient'. Please try to keep up with the trends.

 

[Electrodynamic 10+ year member]

Sealed is going to be more accurate, ported is going to be louder. The Mag will still be accurate ported but customers have loved them sealed as well. If you're after a LOT of output and you have the room, go ported. If you want a usable trunk, then go sealed. Even sealed the Mag is going to have plenty of output even with 850 watts.

 

[528hz 10+ year member]

2.5 sealed is what I put mine in. I had 1500 going to it and got pretty damm loud (140.7 on TL). The SQ was still fluid and if I still had it, I would port it.

I think you mean your amp is 850x1 @ 1 ohm right...

 

[Electrodynamic 10+ year member]

Yeah, everyone use to say they were efficient. But now that the new one is coming out, the old one is called 'inefficient'. Please try to keep up with the trends.

I always considered the Mag to be decently efficient - especially when compared to a lot of the subs they were compared to (big SPL drivers). From a sealed perspective they were pretty efficient but they shined when ported. The Mag in question found its way into the SPL arena a lot and somehow got the misconception that they were power-hungry beasts. They could handle extra power, but they didnt' need it for daily driving.

From a small sealed performance standpoint, yes, the current Mag is no match for the new Mag in terms of efficiency.

 

[chibahawk 10+ year member]

I think you mean your amp is 850x1 @ 1 ohm right...

Nope, the RF amp does 850 @ 4ohms bridged. Also I knew I was talking about porting the other box.

One question though - if I just plug my dimensions into the calculator over at the 12volt for porting equations, should I have to worry about port noise? I've never used a flared tube as a port before...

 

[DownSouth954 10+ year member]

I loved my Mag ported. I heard one sealed and it sounded totally different as far as the output.

I had BJ Fish build me a flared port enclosure you can view it here

 

[528hz 10+ year member]

I always rely on Immacomputer to design my stuff, then I build. He's one badassmotherfvcker!!!

 

[tsenfw 10+ year member]

He's a computer what do you expect? lol

 

[ultimate157 5,000+ posts]

I'm pretty happy with the Mag sealed. I had it in a box way too big, but I will be redoing and completing the install soon.