Get my HD3C15 today

[IgnoreMe 5,000+ posts]

just got a pm from DJ. says to reduce port area to 15-16" per cube and tune to 38-40hz and to center the sub, instead of having it near the port wall like it is.

hey dj while you're in here, do you still recommend the 4.5^ft volume?

 

[DJL 10+ year member]

I like 4 cubes myself, but that's just me.

 

[tommyk90 5,000+ posts]

just got a pm from DJ. says to reduce port area to 15-16" and tune to 38-40hz and to center the sub, instead of having it near the port wall like it is.
hey dj while you're in here, do you still recommend the 4.5^ft volume?

15 square inches? Thats entirely too small. Thats about equivalent to one 4" aeroport, WAY too little for a 15".

Having the sub off to the side is fine actually, I'm guessing you did that to move the sub farther away from the end of the port (inside the box)? If so, I do the same thing.

 

[Skip01 5,000+ posts]

just got a pm from DJ. says to reduce port area to 15-16" and tune to 38-40hz and to center the sub, instead of having it near the port wall like it is.
hey dj while you're in here, do you still recommend the 4.5^ft volume?

Center the sub?.....i always thought it was best to have it over the port...hence CRX style boxes?

Is this only with sub back port back?

 

[DJL 10+ year member]

Tommy that's 15-16 sq'' per net cubic foot of box volume

 

[IgnoreMe 5,000+ posts]

15 square inches? Thats entirely too small. Thats about equivalent to one 4" aeroport, WAY too little for a 15".
Having the sub off to the side is fine actually, I'm guessing you did that to move the sub farther away from the end of the port (inside the box)? If so, I do the same thing.

god dammit tommy. i did it again lol. i meant 15-16" per cube.

as far as the port, yes thats why i did it.

 

[IgnoreMe 5,000+ posts]

Center the sub?.....i always thought it was best to have it over the port...hence CRX style boxes?
Is this only with sub back port back?

he means to center it on the front baffle instead of being tucked away into the port wall corner. i dont know all ins and outs of how air reacts inside, but maybe as the air is compressed in that corner it effects the sub some how.

 

[DJL 10+ year member]

god dammit tommy. i did it again lol. i meant 15-16" per cube

Your are worse than the Chinese dude who does our box labels

 

[IgnoreMe 5,000+ posts]

Your are worse than the Chinese dude who does our box labels

lol. hey DJ, i commend you guys for the way you package your subs. the foam inserts on top and the whole foam support the the rest of the sub and double boxing it, at least in my opinion, is a GREAT idea. no offense to FI (as i have owned 3 of their woofers in 2 different models so far and i have loved each one), but your method of packaging is ridiculously more effective in protecting the products.

 

[DJL 10+ year member]

lol. hey DJ, i commend you guys for the way you package your subs. the foam inserts on top and the whole foam support the the rest of the sub and double boxing it, at least in my opinion, is a GREAT idea. no offense to FI (as i have owned 3 of their woofers in 2 different models so far and i have loved each one), but your method of packaging is ridiculously more effective in protecting the products.

So far UPS has only managed to break one of them

 

[tommyk90 5,000+ posts]

Tommy that's 15-16 sq'' per net cubic foot of box volume

Ohhhhhhhhhhh, ok. haha

4 cubes would put him right at 60 square inches, which is what I recommended earlier. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[IgnoreMe 5,000+ posts]

Ohhhhhhhhhhh, ok. haha
4 cubes would put him right at 60 square inches, which is what I recommended earlier. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

i think thats gonna be my next box then //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif. see what kind of difference i get.

 

[tommyk90 5,000+ posts]

god dammit tommy. i did it again lol. i meant 15-16" per cube.
as far as the port, yes thats why i did it.

DJ beat you to it. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

As far as the sub location, I've done the same thing on multiple boxes with absolutely no issues.

Thats my sister's setup. 10" type-r and a kicker kx400.2 and it throws down very well and has a surprisingly flat frequency response.

 

[IgnoreMe 5,000+ posts]

DJ beat you to it. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
As far as the sub location, I've done the same thing on multiple boxes with absolutely no issues.

Thats my sister's setup. 10" type-r and a kicker kx400.2 and it throws down very well and has a surprisingly flat frequency response.

i was looking through your photobucket and saw that a while back. looking good. that type r looks like its been put through hell though lol

 

[DJL 10+ year member]

DJ beat you to it. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
As far as the sub location, I've done the same thing on multiple boxes with absolutely no issues.

Thats my sister's setup. 10" type-r and a kicker kx400.2 and it throws down very well and has a surprisingly flat frequency response.

You are quite a bit further from the port wall with a much smaller sub and motor structure. Tuck it in too close and the cone doesn't load even