Need help share your wisdom and maybe show some graphs? Noobi/diy

[CajunLB]

Hello fellow Audioholic's and DIYers. At the moment I have the Dayton Ultimax 15 subwoofer in my 3 cubic foot sealed box.
I now have a 10 cubic foot internal volume box that I want to use ported with the Dayton Ultimax 15.
I have tried several times learning how to use modeling software. I just again figure it out.
Can any of you guys help me with knowing what the optimal porting would be for this combo. Flat,2-4.5”round ports, 1- 6” round port ?

I understand it’s not the proper way to go about this but it’s what I have and I know it’s enough for an open minded DIYer to help me .
Pretty much just want to know what is the best 6” port size for that combo and what to expect? Thanks

 

[Verdinut]

Hello fellow Audioholic's and DIYers. At the moment I have the Dayton Ultimax 15 subwoofer in my 3 cubic foot sealed box.
I now have a 10 cubic foot internal volume box that I want to use ported with the Dayton Ultimax 15.
I have tried several times learning how to use modeling software. I just again figure it out.
Can any of you guys help me with knowing what the optimal porting would be for this combo. Flat,2-4.5”round ports, 1- 6” round port ?

I understand it’s not the proper way to go about this but it’s what I have and I know it’s enough for an open minded DIYer to help me .
Pretty much just want to know what is the best 6” port size for that combo and what to expect? Thanks

If your driver is the Ultimax 15-22, for a box with a net volume of 10 cf, a 6 inch vent pipe would need to be 28" long. The box would be tuned at around 15 Hz and you would get an F3 at around 21 Hz.
You could get more recommendations from Parts-Express. The results would vary with the quantity of damping material used.

 

[CajunLB]

What of the 2 choices would you recommend for an all movie 5.1.4 system in about a 2400 cubic foot room? If ported what may I expect to notice.?

 

[CajunLB]

If your driver is the Ultimax 15-22, for a box with a net volume of 10 cf, a 6 inch vent pipe would need to be 28" long. The box would be tuned at around 15 Hz and you would get an F3 at around 21 Hz.
You could get more recommendations from Parts-Express. The results would vary with the quantity of damping material used.

Thank you so much for the simple explanation.

 

[Verdinut]

What of the 2 choices would you recommend for an all movie 5.1.4 system in about a 2400 cubic foot room? If ported what may I expect to notice.?

If you have no access to any EQ possibility, the ported box will definitely have more efficient low frequency response down to a lower frequency as well. The ported box is the preferred type of subwoofer box design. A sealed box is to be used when you are too limited in space for the bigger size vented cabinet.

For instance, the optimum cabinet size in a sealed box is roughly 4 cf, and you would get an F3 at 33 Hz. In comparison, the optimum vented box would have a net internal volume of 11.1 cf. This would provide a response down to an F3 at 17 Hz, roughly an octave lower.

CLEARANCE Dayton Audio UM15-22 15" Ultimax DVC Subwoofer 2 ohms Per Coil

Dayton Audio UM15-22 15" Ultimax DVC Subwoofer 2 ohms Per CoilDayton Audio UM15-22 15" Ultimax DVC SubwooferExperience the Apex of Subwoofer DesignThe Ultimax Series of dual voice coil subwoofers, from Dayton Audio, are not for the faint of heart. Built using the latest in subwoofer technology...

www.parts-express.com

The rather small room size such as yours most likely will provide some boost at certain frequencies (Room gain). That is the reason why a pair of similar subs, located at the best possible positions, following listening tests and preferably with acoustics testing using a microphone, are useful to improve the frequency response linearity at the listening position.

 

[panteragstk]

@NINaudio built a Dayton kit like that, but it was the 18" version. He has a build thread and said with DSP it's flat to 16hz.