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Subs back and port up question


Cj Kumz

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Posted

Anyone tried or heard how subs back and port up sounds in hatchback or SUV. Will there be any forms of cancellation?

Vw Polo

Pioneer Deh-6050UB

Sundown Saz-3500d

DD Audio 9500 15''

5.5 cubic feet box with 10 inch port @ 38hz

I live to hear the Bass drop!!!

Posted

We tried it in a friends trailblazer it didnt work out as good as subs up port back or subs and port back.

Might have different results in your application though.

That being said a lot of people's definition of "music" is a clipped 30 hz sine wave with some 80 IQ knuckle head grunting about committing crimes and his genitals.

Posted

Don't waste your time.

Michael Hughes = 6X SPL World Champion - Loudest on the planet in db Drag, USACi, and IASCA.

Posted

Lol thanks for the info guys. We building up a box for three 12s in a hatchback and the client doesn't wanna temper with the back seat so the depth doesn't allow for subs up lol.

Vw Polo

Pioneer Deh-6050UB

Sundown Saz-3500d

DD Audio 9500 15''

5.5 cubic feet box with 10 inch port @ 38hz

I live to hear the Bass drop!!!

Posted

I did a subs back ports up setup in my ZX3. I did a 151.3 with 2 Nightshade 15's and 2 saz1500d's. I had the same exact box flipped with woofers up and ports back and only did a 149.7 with the same exact equipment. I went on to find out that subs up and port to the driver's side of the car was the loudest configuration but subs back ports up was indeed louder than subs up port back.

2013 VW Jetta GLI 2.0 Turbo

1 Sundown Audio SCV2000

1 Sundown Audio X15 V2

1 XS Power D3100

Audio Control LC6i

Stock Deck

146.4 sealed on the dash at 37hz

2001 Focus ZX3: RETIRED

Team Sundown Audio, Team XS Power, 2 time NSPL Car 3601-Up Champion, 2 time NSPL Car Hardcore Champion
Highest NSPL Scores to date:
154.3db on the dash sealed at 46hz, 156.2db in the kick at 46hz
155.2db unofficial on dash at 43hz

Posted

Thanks for the input. How was your clearance infront of the subs with the subs facing back?

Vw Polo

Pioneer Deh-6050UB

Sundown Saz-3500d

DD Audio 9500 15''

5.5 cubic feet box with 10 inch port @ 38hz

I live to hear the Bass drop!!!

Posted

When a person like Michael Hughes is giving you advice it would be best for you to listen him.

That being said a lot of people's definition of "music" is a clipped 30 hz sine wave with some 80 IQ knuckle head grunting about committing crimes and his genitals.

Posted

Without firing the port back you have nothing to load off of unless you make the box as tall as the cabin is and fire the port at the roof.

But what happens when you build a box in a hatch with both port and subs firing up and it not as tall as the cabin?? Never heard of people experiencing problems with those setups

Vw Polo

Pioneer Deh-6050UB

Sundown Saz-3500d

DD Audio 9500 15''

5.5 cubic feet box with 10 inch port @ 38hz

I live to hear the Bass drop!!!

Posted

Without firing the port back you have nothing to load off of unless you make the box as tall as the cabin is and fire the port at the roof.

But what happens when you build a box in a hatch with both port and subs firing up and it not as tall as the cabin?? Never heard of people experiencing problems with those setups

Hatch back is a much smaller area than a SUV. The air has less distance to travel to reach the roof than you would in a SUV. Plus in a hatch, it is very easy to get loud regardless of port direction. You can fart in a hatch and get loud.

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