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HighTQCummins
07-13-2009, 12:35 PM
I was planning on building a box for 2 memphis M3's. My plans were to use 3/4" MDF. Box size is gonna be roughly 2.85 cu. ft. before displacements (roughly 2.0 after) I was planning on tuning it with an Aero to around 33hz.

My only questions are, as far as port area what do I need?

Thanks for any input

dappa5
07-13-2009, 03:47 PM
Memphis recommends 2.5-3.25 sealed
I'm getting that out of the Memphis tech resource manual
that's common chamber but one sub says 1.25-1.75 so I' would go bigger
I'm @ a shop that's a Memphis authorized dealer and have always had great results w/ recommended specs or bigger

HighTQCummins
07-13-2009, 03:56 PM
does their M3 12" really call for 2.5? Wow, I have an M3 and Memphis box and before displacement it comes to like 2.1 cubes.

Do you think if I built my own that was roughly 2.5 cube after displacement tuned around 33ish aero ported would it be louder?

I know that last question is pretty vague and open ended, but if you have any idea what I'm talking about it'll make sense (i know dumb right?)

dappa5
07-13-2009, 04:24 PM
that's 2.5 for two subs minimum
3.25 max for two
i think it will be fine at 33hz would be better on a M1.1000
or even a PR1.1000 but since they're under powered i would go BIGGER than recommended small power+big air=big boom

HighTQCummins
07-13-2009, 05:38 PM
Thanks alot man, I appreciate it. I actually have a friend that has a PR1.1000, that wants to trade me for my 500 straight out because he only has 1 M3.

I'll look into the amp a little bit and see if there is anything wrong with it, because no one would trade a 500 for a 1000 outright

dappa5
07-13-2009, 07:03 PM
i have lol but i needed the 500 and the 1000 i had was 1 1/2 yrs old and 500 was new lol

also both were m-class not PR but same concept