Cadiillac Rebuild/ True Trunk 4th order bandpass.. Sundown, Pioneer, Soundstream

[nicholasmccabe]

what do you set your ssfilter and low pass at?? Currently i have the ssf at 30 and the low pass at around 80 or so. Also, since my subs are inverted do i need to slip my phase switch to 180?? Or do i just leave it normal.

Also,
therer is a setting on mky pioneer head unit thaqt says phase> It can be set to normnal or revefrse. WShat do i set it too??

[DB-Audio]

build looks awesome man keep up the good work

[nicholasmccabe]

build looks awesome man keep up the good work

Thank you. Jjst added some bracing this weekend. Looks pretty good. Ill get moar pics up soon guys, plus a video

[mazdakid]

Can you take the whole port out to gain some space back and make a new smaller port?

[nicholasmccabe]

Can you take the whole port out to gain some space back and make a new smaller port?

I can do that for sure. Or just keep this port for SPL and build a port that will slide in and be for daily. Drop the tuning down to about 45 or so. Running a sweep, Im peaking in the car at around 55 or 56 hz. Ive sat in some loud cars before, and this car @ 55 hz is making my teeth chatter and grabbing my throat.

Once i tune a little lower i should get a little more air movement corect??

[nicholasmccabe]

November 4th in Montgomery, AL. Gonna try this setup on the meter.

[nicholasmccabe]

DSC07492.jpg picture by nicholasmccabe - Photobucket

[nicholasmccabe]

What do you guys thinkn about the sealded side?? I asumed that 2cf per woofer would have been enough. It still doesnt dig up the lows like i want even with 4 sealed(maybe4.25 with poly) and 8.25 ported. Maybe im going ablout my loading nwall all wrong. Should i buy a sheet of mdf and do port on the drivers side??instead of the middle?? Maybe its my car, i see alot of guys have a good install doing the port through the rear deck, but that is so they can fit a bo=igger port. You can see my back deck and rear fireweall, i pretty much cut it all out so there is nothing blocking the port. It should be moving air but its not. Fuckkin pisssin me off bigtime man. Put work into this build and its not exactly how i want iot

[cyn]

Do you have any Leaks in the Box? I usually turn off the SSF, freq on my amp is set between 80-100...
When I had my 12 in a 4th I was at 1.8 net ported to 47hz , .8 sealed.. would hit anything from 20hz to 80hz all day long..
Who did the box design for you?

[nicholasmccabe]

Do you have any Leaks in the Box? I usually turn off the SSF, freq on my amp is set between 80-100...
When I had my 12 in a 4th I was at 1.8 net ported to 47hz , .8 sealed.. would hit anything from 20hz to 80hz all day long..
Who did the box design for you?

I dont have any way to switch the ss off. It goes from 20hz-50hz. SO luike i said i set it around the middle at 30. I did the design myself, and as you can see from tehpics i built all inside the trunk via Kregg tool pockethole jig. theres about 3 tubes of caulk used on all the joints , double baffle and 2"metal bracing on teh sealed side and ported side. The original design i drew up called for about 3cf sealed and around 10 ported, but from my last experience, i decided to maximize the sealed section for a total of 4 cubes net, common sealed chamber. That left me with 8.5 ported before any displacements. 0.34cf displaced by teh SA15s and whatever my port displaces leaves me with around 7.75-8 cf ported. Like i said, im having a terrible time figunring where to tune it to. Its not moving much air at all

[hispls]

I dont have any way to switch the ss off. It goes from 20hz-50hz. SO luike i said i set it around the middle at 30. I did the design myself, and as you can see from tehpics i built all inside the trunk via Kregg tool pockethole jig. theres about 3 tubes of caulk used on all the joints , double baffle and 2"metal bracing on teh sealed side and ported side. The original design i drew up called for about 3cf sealed and around 10 ported, but from my last experience, i decided to maximize the sealed section for a total of 4 cubes net, common sealed chamber. That left me with 8.5 ported before any displacements. 0.34cf displaced by teh SA15s and whatever my port displaces leaves me with around 7.75-8 cf ported. Like i said, im having a terrible time figunring where to tune it to. Its not moving much air at all

Pull the subs from the sealed chamber and build a new front where you can mount both subs. Both subs and a big port firing into the cabin. Tune @ 35hz and see how you like that.

[nicholasmccabe]

Pull the subs from the sealed chamber and build a new front where you can mount both subs. Both subs and a big port firing into the cabin. Tune @ 35hz and see how you like that.

What do you mean a new front?? The box is in 1 piece and was assembled inside the trunk using a kregg pockethole jig. Do you mean turn the subs around so the motor and magnet are in the sealed side (with the face of the sub firing into the pored section??) They are inverted at the mooment

[hispls]

What do you mean a new front?? The box is in 1 piece and was assembled inside the trunk using a kregg pockethole jig. Do you mean turn the subs around so the motor and magnet are in the sealed side (with the face of the sub firing into the pored section??) They are inverted at the mooment

Some pics of what's actually firing into the cabin would help. I may be not getting what you said you removed.

[nicholasmccabe]

Some pics of what's actually firing into the cabin would help. I may be not getting what you said you removed.

Oh ok . I will get those up for you sir.