Hey Jonathan?

 

Gold Member
Username: James1115

Wilton, Ct

Post Number: 4496
Registered: Dec-04
I was seriously debating going with a IDmax 12 in my new system in my truck over the ava 12 I was planning on running. I am going to be removing the center seat up front and building an enclosure with a 12 downfiring and ported firing toward the dash. I can get about 2-2.5cu ft. what do you think I should do size wise and tuned to? I am going to be running it either with my orion hcca 250g4 @ 1ohm 800 watts or my ppi a600 at 4ohms with 600. what do you think?
 

Gold Member
Username: Jonathan_f

GA USA

Post Number: 5243
Registered: May-04
1. 2.5 net tuned to 25hz
2. 2.25 tuned to 28hz
3. 2 net tuned to 30

Any smaller or higher tuned than that and I'd start thinking about sealed. It'll be kinda tough to fit it in a center console, but it's doable.
 

Gold Member
Username: James1115

Wilton, Ct

Post Number: 4498
Registered: Dec-04
its a full middle seat its pretty big. Those dodge trucks have a wide seat.
 

Silver Member
Username: Mixneffect

Orangevale, Ca. USA

Post Number: 725
Registered: Apr-05
James,

I got almost the same numbers using BassBoxPro6;

VB=2.893 CF (blue) optimum size as per BBP6
FB=21.95 Hz
QL=6.591
F3=26.93 Hz
DV=4"
LV=21.26"

VB=2.5 CF (yellow)
FB=22.81 Hz
QL=6.591
F3=28.4 Hz
DV=3"
LV=12.23"

VB=2 CF (red)
FB=24.19 Hz
QL=6.591
F3=30.82 Hz
DV=3"
LV=13.93"

Upload
 

Gold Member
Username: James1115

Wilton, Ct

Post Number: 4505
Registered: Dec-04
hey guys thanks so much I did some final measuring, and I am going to go 2.0 tuned to 28. Thanks for the detail mix form that program what size port do I need at 2.0 tuned to 28? after displacement.
 

Silver Member
Username: Mixneffect

Orangevale, Ca. USA

Post Number: 729
Registered: Apr-05
VB=2 CF (red).....= BOX SIZE
FB=24.19 Hz.......= PORT TUNING FREQUENCY
QL=6.591..........= BOX LEAKEAGE LOSSES
F3=30.82 Hz.......= FREQUENCY CUTOFF 3DB BELOW PAR
DV=3".............= PORT DIAMETER
LV=13.93".........= PORT LENGTH

2.0 cubic feet is the net volume. You must add for the port and driver displacement.

3" X 13.93" port displaces the volume by .0669 cubic feet. The driver displaces the volume by .12 cubic feet. So make the box 2.1869 cubic feet or 61.93 liters.
 

Silver Member
Username: Mixneffect

Orangevale, Ca. USA

Post Number: 730
Registered: Apr-05
If you are looking for a total 2 cubic feet interior volume then consider this;

VB=1.809 CF* / 51.23 Liters
Total volume = 2 CF* / 56.63 Liters
FB=24.83 Hz
QL=6.591
F3=31.98 Hz
DV=3"
LV=14.76"
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