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View Full Version : 45s in corner, needed?



hockey512546
07-03-2009, 07:38 PM
Would there be a noticeable difference if I did not to put 45 degree angles at each corner of the port?

Just wondering because they are going to be a pain in the *** to cut without a table saw.

The box is 2.2 @33 with 46.5 sq inches of port area
Fi SSD 12

Thanks

G.W.Kush
07-03-2009, 07:39 PM
duno. 45's are ****. suposed to help with standing waves i think

basshedz06
07-03-2009, 08:34 PM
help with standing waves an i think cut down on heat build up heat+sub=is more money for a recone lol

i would recommend sanding your box insides as smooth as you can get it if your not gonna use 45's but i would be really careful if your not using a table saw.

Lakota
07-03-2009, 10:55 PM
Don't worry about them. I test this type of stuff and will tell you from experience with a Termlab that it's not necessary for daily driving.

G.W.Kush
07-03-2009, 10:58 PM
Don't worry about them. I test this type of stuff and will tell you from experience with a Termlab that it's not necessary for daily driving.

makes the box look very very nice imo

hockey512546
07-03-2009, 11:10 PM
but no one sees the inside

hatemonger
07-03-2009, 11:12 PM
but no one sees the inside

you can see it through the port.

G.W.Kush
07-03-2009, 11:13 PM
I know it looks good even if you dont.

Lakota
07-03-2009, 11:36 PM
Keep in mind that 45 degree corners can also have a negative impact. They do not always improve box output.

thegreatestpenn
07-03-2009, 11:38 PM
they aren't worth the trouble unless you are just that into cutting wood IMO.

dappa5
07-03-2009, 11:38 PM
^^^^^^x2
OR HAVE A TABLE SAW

bubbagumper6
07-03-2009, 11:39 PM
Keep in mind that 45 degree corners can also have a negative impact. They do not always improve box output.

How so?

dappa5
07-03-2009, 11:40 PM
can impede your standing wave if port is not wide enough or some thing like that

bubbagumper6
07-03-2009, 11:43 PM
The point of 45's is to make the corner width the same as the rest of the port, so it shouldn't be too narrow...

thegreatestpenn
07-03-2009, 11:44 PM
The point of 45's is to make the corner width the same as the rest of the port, so it shouldn't be too narrow...

if there's not enough port area in the first place then it would be too narrow

bubbagumper6
07-03-2009, 11:47 PM
btw they really aren't hard to cut, I just did one today, took me like 2 minutes...

Pioneer~Saturn
07-04-2009, 12:52 AM
If youre really into it...you can make a kerfed port all the way through (like this: http://media.photobucket.com/image/kerfed%20port/theothermike/002-3.jpg ) so the port doesn't change widths through the whole thing, it's pretty **** but not necessary really. I use 45'ed corners though

power-fanatic07
07-04-2009, 12:58 AM
just do a kerfed port :fyi:

****...pioneer beat me to it

Pioneer~Saturn
07-04-2009, 01:02 AM
:)

Lakota
07-04-2009, 12:08 PM
A kerfed port should make a bigger difference than putting a corner in the box. Flaring the ends of a port tends help drastically, but putting little corners between box planes tends to only make minimal effects.

Lakota
07-04-2009, 12:12 PM
How so?

They can change your box volume/tuning and/or disrupt air flow. I've lost up to 0.5 dB by adding a corner. Some spots in a box may like them, while others may not. They are tricky and are only worth messing with if you have a Termlab and are trying to maximize your score.

Although I don't recommend messing with 45 degree corners, I do recommend for everyone to round over the corners on the entrance/exit of their ports. The flares on a kerfed slot port and aero port tend to help greatly.

Zakerid
07-04-2009, 12:13 PM
buy some corner molding...

Annnarbor84
07-04-2009, 12:16 PM
I gained 1.5 dbs by adding 45's