Enclosure for RE SX 12" pics

[THUMPPER 10+ year member]

this one is up firing for a RE SX 12"

2.0cf3 plus port and sub diss tunned at 33hz

36sq inches of port area with out flare

126sq inches of area at flare opening

and a smooth black port

Click to read more...

 

[mazdakid 5,000+ posts]

i wanna hear something like that, can you actually hear a difference with it flared?

 

[Immacomputer 10+ year member]

No. It does decrease air velocity at the port opening though.

 

[THUMPPER 10+ year member]

decreased air velosity= quieter port

 

[rtillaree 10+ year member]

nice....terminal placement kinda odd IMO, but i guess that is for a specific application purpose...

 

[THUMPPER 10+ year member]

the port covers the whole bottom of the box

and this box is up firing..the terminal cup will be facing the

back of the seat....so it will not be visible in this install

 

[rtillaree 10+ year member]

that's what i figured after posting...looks solid...def has that thumper look to it...

 

[blackbonnie 5,000+ posts]

nice build

 

[Immacomputer 10+ year member]

decreased air velosity= quieter port

I know that but with over 30 inches of port already, you're not going to notice any port noise anyways. I had my sub in 2.2 cubes tuned to 32 with 30 inches^2 of port and got no noise at all with no flare at all. The same sub in 1.5 cubes tuned to 30 with 20 inches^2 of port with a flare also had no noise. With the flare, I could use less port area and still have no noise. In either case, I couldn't hear any port noise. Did the flare help? Sure... would it have made a difference on my other enclosure? Nope.

 

[THUMPPER 10+ year member]

my enclosure software has a very acurate air velosity

gage for designing the ports...

I keep the velosity below 4%..the really low stuff

comes thru very quietly..very impressive to those

who are extreamly picky with sound quality....

this scale is in percentage of MACH

 

[Immacomputer 10+ year member]

And that has what to do with the flare changing the sound? You had a sufficient amount of port area to begin with; the flare really is not changing the sound enough to notice it, I don't care how picky somebody is.

Does it look great? Yes, it does. Would it make things sound different? Not when you already have enough port area to get rid of any audible port noise.

 

[THUMPPER 10+ year member]

who said anything about a flare changing the sound?

the flare is just for looks...I was talking port area not about the flare

 

[Immacomputer 10+ year member]

mazdakid asked.

 

[mazdakid 5,000+ posts]

ya i was just wodering if the flare makes a difference to the ear

 

[PV Audio 5,000+ posts]

Nope, it shouldn't. I wonder if adding vanes inside the port at the bend would decrease turbulence though...