RE SXXv2 4th order design

[eenyuheye8o8 10+ year member]

I wanted to try something different and made a 4th order design for my 2 RE SXXv2 12s. Right now got the sealed section 1.5 cu. Net and the ported 3 ft^3 net after port and sub displacement. Tuned to 35 hertz. I was wondering should I tune it higher or leave it as it is. Gonna be running these on a SoundQubed 4500 @.7 ohm. 2:1 ratio. One of my friends tune it to 45 hertz for better high end and another one of my friends said to tune it to 38 for more musical. I wanna be loud and still keep the quality. Also I was wondering if the port being that way would one speaker affect it since 1 is closer then the other. And these are going in a Mitsubishi Lancer 2012

Made this design Sealed box 1.5 net and ported is 3 cu net. Tuned to 38~39 hertz. I chose it this way so that the subs and the ports are more evenly distributed into the port. Anyone know if this is a good one or it will be a fail for me?

Click to read more...

 

[Jroo 10+ year member]

Im no guru but have had a couple of 4th designed for me. Did you guys model this or just use generic sizes and port tuning? It seems like you are tuned way low, unless that is what you want? Tuned to 38 or 39 I doubt this 4th could play 50 down. Unless you have midbass that truly play that low, not sure why you would tune there. Ive seen a 4th tuned that low and the guy called it a sh##ter box. He had 8" midbass and wanted his subs to play 50 to 20 hz. The midbass took from 50 up.

It sounds like your friends are giving you traditional tuning for a standard ported box not 4th order port tuning. The port design seem odd, but could work. All the ports I have seen were more direct. My last 4th order design was larger on the sealed side than the ported side and was tuned to 65 hz. The box was designed to be musical and play from 80 to 25hz. Again, some of the 4th order guys can chime in clear anything up if I said something wrong.

 

[lew-e 10+ year member]

I wanted to try something different and made a 4th order design for my 2 RE SXXv2 12s. Right now got the sealed section 1.5 cu. Net and the ported 3 ft^3 net after port and sub displacement. Tuned to 35 hertz. I was wondering should I tune it higher or leave it as it is. Gonna be running these on a SoundQubed 4500 @.7 ohm. 2:1 ratio. One of my friends tune it to 45 hertz for better high end and another one of my friends said to tune it to 38 for more musical. I wanna be loud and still keep the quality. Also I was wondering if the port being that way would one speaker affect it since 1 is closer then the other. And these are going in a Mitsubishi Lancer 2012

Made this design Sealed box 1.5 net and ported is 3 cu net. Tuned to 38~39 hertz. I chose it this way so that the subs and the ports are more evenly distributed into the port. Anyone know if this is a good one or it will be a fail for me?

How is that thing going to fit in a Lancer? My box barely squeezes into my evo through the trunk opening and it's quite a bit smaller. Are you building in the trunk?

 

[eenyuheye8o8 10+ year member]

How is that thing going to fit in a Lancer? My box barely squeezes into my evo through the trunk opening and it's quite a bit smaller. Are you building in the trunk?

I've had this in here right before designing this and the box size was 35x14x26 just gotta remove the trim where the trunk locks are.

I even fit a 36x15x26 inside

 

[lew-e 10+ year member]

Interesting. That's good to know!

Sent from my HTC One_M8 using Tapatalk