Power Acoustik MOFO-15

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cubinbob

Member - Posts: 43

Joined: March 30, 2004

Location: United States

Posted: December 14, 2004 at 3:38 PM / IP Logged

I am building a box for two of the MOFO 15. The specs are saying 3.4 cubic feet per sub so 6.8 for two. That also includes sub displaysment and port. The specs are calling for 2 round ports 4”(dia)x8.25”(length) per sub. But i want to make the box a shared box and have one sloted port insted of round ports. Can someon tell me how many cubic inches the port need to be for two of the MOFO 15. I called the techsupport people at power acoustik but they did not know. They said that they have to have a program to figure it out and they don't. Please help. The build starts tomorrow. HELP

Here are the MOFO 15 specs

2600 watts power handling

1500 Watts RMS

340 oz. magnet

4” BASV/Kapton Hybrid 18 AWG Voice Coil

SPL 92 dB

Fs: 33.5 Hz

Vas: 1.4 cu.ft.

Qms: 7.17

Qes: 0.51

Qts: 0.4795

Xmax: 0.9"

Sealed box: N/A

Ported box: 3.4 cu..Ft.

Tuning: 40 Hz

Port size: 4”(dia)x8.25”(length)

# of ports: 2

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Ravendarat

Platinum - Posts: 2,806

Joined: February 23, 2004

Location: Canada

Posted: December 14, 2004 at 3:41 PM / IP Logged

I cant stress enough how bad of an Idea it is to run sharred space. And running a sharred space box thats ported is even worse. If you wanna make slotted ports thats fine but do not build a sharred space box.

double-secret reverse-osmosis speaker-cone-induced high-level interference distortion, Its a killer

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thapimpfromchi

Silver - Posts: 616

Joined: July 30, 2003

Location: United States

Posted: December 14, 2004 at 3:42 PM / IP Logged

dont share. I'll tell u that much. converting the round to square ports, hmm... let me see i think i have an equation written down around here somewhere. i'll get back to u on that.

1990 Honda Civic HB:

Clarion DXZ545MP H.U.

2- 6.5" Power Acoustik interiors

Diamond Audio 600.1 amp

Diamond Audio 15" M6MKII

Pyramid PB881X 4 CH. Amp

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cubinbob

Member - Posts: 43

Joined: March 30, 2004

Location: United States

Posted: December 14, 2004 at 3:56 PM / IP Logged

Ok, thanks for the very fast reply. I think that i might or probably will go with the one sub per chamber but that then means that i have to build two ports. I still have to figure out the cubic inches for the ports. One sub per chamber.

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cubinbob

Member - Posts: 43

Joined: March 30, 2004

Location: United States

Posted: December 14, 2004 at 4:12 PM / IP Logged

I just talked to the techsupport at poweracoustik and i asked them for a single 15 mofo port size and they gave me 2 x 8.6 x 6. My box is going to be 18 tall upfront were the port and the subs are going to go so that gives me 16.5 inside the port tall. How to i aproch this from here on the port building perspective. long, wide, deep.

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Power Acoustik MOFO-15

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