3.4 cubes too big for a hdc3 15?

[dutchmaster 10+ year member]

I have a old style hdc3 15 and a box thats 4.08 before and 3.4 after 53 sq inches of port with a 22 inch long port on the side dd style. is this box too big? is the port area correct? i couldnt seem to find box specs for the hdc3 15..

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[pro-rabbit 5,000+ posts]

Box is a bit small and tuned a bit high.

 

[dutchmaster 10+ year member]

how high is it tuned? how much longer should i make the port? i actually found specs they recommend 56 sq inches with a 20 inch long port.

 

[RangerDangerV2 5,000+ posts]

bigger box and more port. those aq like more port from what I am told.

 

[pro-rabbit 5,000+ posts]

how high is it tuned? how much longer should i make the port? i actually found specs they recommend 56 sq inches with a 20 inch long port.

"They" are wrong unless you are just going for a burp box.

 

[dutchmaster 10+ year member]

how much longer should i make the port?

 

[mazdakid 5,000+ posts]

Making the port longer is only going to make the box even smaller.

 

[pro-rabbit 5,000+ posts]

how much longer should i make the port?

Build a new enclosure.

 

[RAM_Designs 5,000+ posts]

Build a new enclosure.

This.

 

[Buck 5,000+ posts]

Build a new enclosure.

Dis, yo.

 

[Buck 5,000+ posts]

4.25-4.5 cubes with 15-16 in^2 per cube tuned 32-34 generally.

 

[psych0ticnemes1 5,000+ posts]

So building a new box with the same volume and tuning except more port area can increase SPL?

 

[dutchmaster 10+ year member]

kinda wana stick with what i have it hasnt all been put togather yet tho have all the pieces togather just wondering on how long i should make the port. id still like to tune this box right because i can later get a 15 that would like this amount of cubic feet //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif but i gotcha on the 4.5 cubes. anyone got a dd style box designer?

 

[Buck 5,000+ posts]

You needz a box?

 

[dutchmaster 10+ year member]

nah i build them preatty much myself.. just trying to get tips in the one i have now. the final piece is the port length im not sure how to figure tuning. ik you need 16 square inches per cube and 30-40 hz is the best tuning range just dont know how to figure how the length of the port equals tuning..