port area sundown sa8?

[john253a 10+ year member]

2 sa8v1.5

1.46cuft net

2.45 gross

3 common wall port

10x2.95"x 40 long (metric conversion)

29.52sq in of port

20.22sq in per ft

0.01 bracing

View attachment 26532244

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[john253a 10+ year member]

-3db @ 29.5hz

0bd @ 30.5hz

5.6 @ 35.5hz

3.8 @ 40hz

1db @ 50hz

0.5 @ 57-80hz

 

[jirehn 10+ year member]

Thanks for this post, This is helpful, I'm glad I found your post.

 

[Phoenix Risen 10+ year member]

what is this post supposed to be, and thats rather peaky, i hope you have a good eq or you took into account your cars peak.

if not it could sound pretty rough.

 

[john253a 10+ year member]

thats the spesc supplied from mainfactor,

the only way to level it out at 0 is to run them in 0.5cuft net (for both) @ 34.2hz

or i can level it abit higher @ 38hz

View attachment 26532246

 

[Phoenix Risen 10+ year member]

i got a killer theoretical response out of my pair, but i was also modeling with post break in tsp's so that could be making a huge difference in your results.

mine wound up being 1.5 net but had a lot of port area, and was tuned around 37, but had a strong response down to around 24hz.