rockFord_Expedition Posted December 14, 2012 Report Share Posted December 14, 2012 Looking for some help with box design... I tried Torres calculator, and didnt have much luck when it came to port dimensions etc.. I've been sitting on 2 RF Punch HX2 15's for the better part of a decade, they are still new in box. (Yeah, I know). By the end of this month I want to have them hooked up in my Expedition. The amp that will be pushing them is an RF bd1500.1 and I think the birthsheet said something like 1700 RMS @ 2 ohm. I am leaning towards a subs up port back design. I want to do a double baffle and go for the counter-sunk look. I will probably use 3/4 MDF for the build. I don't mind doing extra work to make the box rock solid, but would prefer to use MDF for everything including any internal bracing. I listen to alot of mainstream music, mostly rap/hip hop. Every now and then some other stuff like LMFAO etc. The area I have to work with is right at 48" W x 17" H x 20" D My head unit is a Pioneer AVH-P8400BH Sub Specs (RFD2215): Voice Coil Diameter-inch = 3.0 FS(HZ) = 24 QTS = .53 VAS (ft3) = 5.76 Xmax = .55 Power Handling (RMS) = 600 Mounting Dia. = 13 13/16 Mounting Depth = 6 15/16 Speaker Dis. (ft3) = .109 Vented Box Vol (ft3) = 2.5 Port Diameter and Length (in.) = 4x8 So thats the info straight from the owners manual. I would rather go with a slotted port vs. round like the manual suggests. Thanks Everyone Old School/New School RF Build March 2015 SOTM Winner How to crimp large wire Link to comment Share on other sites More sharing options...
cjvue Posted December 14, 2012 Report Share Posted December 14, 2012 Just go with what is recommended. I'd do 5cube with 12 in^2 port per tune in the low 30's. And goddam you been sitting on that for how long now? lol My Build Log- T E A M S U N D O W N A U D I O - 2013 DbDrag WF SS1-2 - 5th Place 154.6db 2013 MECA Mod3 CA State Final Champ 153.4db Powered by: Sundown Audio Link to comment Share on other sites More sharing options...
rockFord_Expedition Posted December 14, 2012 Author Report Share Posted December 14, 2012 Close to 8 years lol. Pretty bad I know. Old School/New School RF Build March 2015 SOTM Winner How to crimp large wire Link to comment Share on other sites More sharing options...
cjvue Posted December 14, 2012 Report Share Posted December 14, 2012 Can't blame you.... I have a few friends with few 12's sitting in the closet (not brand new though) lol. They're some really decent sub imo. My Build Log- T E A M S U N D O W N A U D I O - 2013 DbDrag WF SS1-2 - 5th Place 154.6db 2013 MECA Mod3 CA State Final Champ 153.4db Powered by: Sundown Audio Link to comment Share on other sites More sharing options...
rockFord_Expedition Posted December 14, 2012 Author Report Share Posted December 14, 2012 Anyone else care to chime in? Old School/New School RF Build March 2015 SOTM Winner How to crimp large wire Link to comment Share on other sites More sharing options...
Joe X Posted December 14, 2012 Report Share Posted December 14, 2012 So here is a suggestion: Enclosure Specifications: Fb = 34 Hz Vb = 5.18 ft^3 External Height = 17 in External Width = 48 in External Depth = 18 in Port Width = 5 in Cut Sheet List: * All Dimensions in Inches. * Wood Thickness is 3/4 for all Parts. External Enclosure Parts: 2 x Top & Bottom (3 parts) = 48 x 18 Left & Right Sides = 16 1/2 x 14 3/4 2x Front = 21 1/2 x 14 3/4 Back = 48 x 14 3/4 Shared Port Internal Assembly Parts: 2 x Front to Back = 14 x 14 3/4 2 x Extension = 4 1/4 x 14 3/4 Assembly guide (generic dimensions): 45s are 2 1/2" except the ones inside the port, if you intend to do them let me know. Need 5" of free airspace in front of the port for proper operation. Link to comment Share on other sites More sharing options...
rockFord_Expedition Posted December 16, 2012 Author Report Share Posted December 16, 2012 Are you talking about the 2 pieces that form a triangle inside the port? Old School/New School RF Build March 2015 SOTM Winner How to crimp large wire Link to comment Share on other sites More sharing options...
Joe X Posted December 16, 2012 Report Share Posted December 16, 2012 Are you talking about the 2 pieces that form a triangle inside the port? That is correct, if you want to do them let you know what size they need to be done. Link to comment Share on other sites More sharing options...
rockFord_Expedition Posted December 16, 2012 Author Report Share Posted December 16, 2012 I would like to incorporate those. Your help is much appreciated Old School/New School RF Build March 2015 SOTM Winner How to crimp large wire Link to comment Share on other sites More sharing options...
Joe X Posted December 16, 2012 Report Share Posted December 16, 2012 Ok so take a look at this: The 45s inside the port should be made 3 1/2" wide IF the front to back port parts are slanted as shown, the most important thing to make sure of is that at the corner the port width stays at 2 1/2" in both sides, if not the box will fail, if you can't get them right for whatever reason is better not to do them. let me know if you have any other questions. Link to comment Share on other sites More sharing options...
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