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Need advice on subs/box for a tractor trailer


Phototini_xB

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If I could get away with an 18" in a ported box with the port facing the front of the bunk and could cut a whole in the separator to let the port fire out into the cab would that pound harder?

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Yep it would....

98' dodge ram

140A alt

Big 3

XS D2700

JVC kd-r310

Rockford T500-1BDCP

2 Sundown E12 Ported 4cubes 35hz

Rockford P400-4

2 Infinity reference 3way 6x9

2 Polk DB 5 1/4

2x layer dynamat all doors

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Sorry for the stupid questions but it's been about 10-12 years since I've had a decent system. And back then it was in a Ford Bronco II. And if I can't cut the hole in the bunk wall for a port would a sealed 18" or two sealed 15's be a better bet?

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id say the 15s. never ran anything before this build but ive heard sealed and they are really quite. they do get decently low tho

My SPL to SQ Build Log

Vehicle:
1997 Dodge Dakota Ext Cab 4x4 2009 Dodge Journey SXT
5.2L V8 Magnum 3.5L V6
Stock Alt

Equipment:

Headunit- Alpine CDE-147BT

Mids/Highs Amp- JL Audio G6600 Class AB 6 Channel

Sub Amp- Hifonics BRZ1700.1D @ 2 Ohms Taramps DSP3000.1D

Sub- Hertz Hi Energy 12" HX300D SounDrive SDA3 12

Tweeters- Rockford Fosgate Power Series Silk Domes Hertz Hi-Energy

Mids- Dayton Audio Reference 4" Full Range Drivers 

Midbass- Silver Flute 6.5" Hertz Hi-Energy 6.5"

Processor- MiniDSP 2x4

RCA- 6 channels of SounDrive HF series

Wire- EB Flex 2/0

 

-Member of Team SounDrive

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I kind of figured two 15's would out do an 18" just because there is more woofer area. Just wanted to ask because I've never even seen an 18 in person before. Does it matter what direction the subs are firing though because with 15's they will most likely be firing upward.

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i think no matter what ull have them firing upward. and what was the under the bunk u had to work with? maybe get a 18 or a 15 in a sixth under there if the room is there

My SPL to SQ Build Log

Vehicle:
1997 Dodge Dakota Ext Cab 4x4 2009 Dodge Journey SXT
5.2L V8 Magnum 3.5L V6
Stock Alt

Equipment:

Headunit- Alpine CDE-147BT

Mids/Highs Amp- JL Audio G6600 Class AB 6 Channel

Sub Amp- Hifonics BRZ1700.1D @ 2 Ohms Taramps DSP3000.1D

Sub- Hertz Hi Energy 12" HX300D SounDrive SDA3 12

Tweeters- Rockford Fosgate Power Series Silk Domes Hertz Hi-Energy

Mids- Dayton Audio Reference 4" Full Range Drivers 

Midbass- Silver Flute 6.5" Hertz Hi-Energy 6.5"

Processor- MiniDSP 2x4

RCA- 6 channels of SounDrive HF series

Wire- EB Flex 2/0

 

-Member of Team SounDrive

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Share on other sites

i think no matter what ull have them firing upward. and what was the under the bunk u had to work with? maybe get a 18 or a 15 in a sixth under there if the room is there

Yeah with either an 18 or two 15's they will be firing up. I can do two 12's firing front though, just not sure if I'll get the feel I'm after in my price range with 12's.

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if ur at 12 try the obsidians i hear they are good and can take over rated and do good in bp boxes. maybe someone with them can chime in tho. but whats ur dims u have under there?

My SPL to SQ Build Log

Vehicle:
1997 Dodge Dakota Ext Cab 4x4 2009 Dodge Journey SXT
5.2L V8 Magnum 3.5L V6
Stock Alt

Equipment:

Headunit- Alpine CDE-147BT

Mids/Highs Amp- JL Audio G6600 Class AB 6 Channel

Sub Amp- Hifonics BRZ1700.1D @ 2 Ohms Taramps DSP3000.1D

Sub- Hertz Hi Energy 12" HX300D SounDrive SDA3 12

Tweeters- Rockford Fosgate Power Series Silk Domes Hertz Hi-Energy

Mids- Dayton Audio Reference 4" Full Range Drivers 

Midbass- Silver Flute 6.5" Hertz Hi-Energy 6.5"

Processor- MiniDSP 2x4

RCA- 6 channels of SounDrive HF series

Wire- EB Flex 2/0

 

-Member of Team SounDrive

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Share on other sites

if ur at 12 try the obsidians i hear they are good and can take over rated and do good in bp boxes. maybe someone with them can chime in tho. but whats ur dims u have under there?

The dimensions are roughly 18" H x 70" wide x 36" deep. But I have to wait until I get the truck to get exact measurements. That's just off the top of my head from the last frieghtliner I had. And my budget will be roughly 1000 bucks for sub/s, box and amp. So basically I want what ever will be the loudest don't really care what size woofers I end up with.

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