reedal Posted January 5, 2015 Report Posted January 5, 2015 Trying my hand at designing my own enclosure, hoping for some feedback. Edges will be rounded over (haven't figured that part of sketchup out yet), WinISD puts port velocity a tenth under 30 m/s. Net volume is 5.11ft^3, tuned to 32.89hz. Outside dimensions are 16" H x 41.5" W x 20" D http://i1372.photobucket.com/albums/ag321/reedal931/box_zps5018b3eb.jpg~original thanks SMD Tool Map https://www.stevemeadedesigns.com/board/topic/193176-smd-tool-map-new-november-2014/ Build log https://www.stevemeadedesigns.com/board/topic/197217-reeds-03-tahoe-hat-sqaq-singer-xs-shca-cockbox-80prs/?page=32
Joe X Posted January 5, 2015 Report Posted January 5, 2015 30 m/s is borderline, if you don't have a space problem consider some more port area.
reedal Posted January 5, 2015 Author Report Posted January 5, 2015 Ok. When I get home tonight I'll tinker with it some more. I started to do a five inch port but was worried about it being too much port and not having enough output. I should have added they're being powered by a SoundQubed 3500.1 at 2ohm (2600w @ 2ohm) in a 97 explorer, port and subs firing towards the hatch. As long as I keep net volume between 4.5 and 5 cubes for these subs that should be fine right? SMD Tool Map https://www.stevemeadedesigns.com/board/topic/193176-smd-tool-map-new-november-2014/ Build log https://www.stevemeadedesigns.com/board/topic/197217-reeds-03-tahoe-hat-sqaq-singer-xs-shca-cockbox-80prs/?page=32
Joe X Posted January 5, 2015 Report Posted January 5, 2015 From my own data just try to keep your subsonic filter at like 30Hz (to start at least) and make sure not to overpower too much, have many firing direction options in that vehicle, firing everything back should do ok and keep the box easy to build.
reedal Posted January 5, 2015 Author Report Posted January 5, 2015 Sounds good. I've looked at any "enclosure help" I see pop up for tips and education because I've never designed or built my own before and wanted to give it a shot. I'll see what I can do about the port velocity but i was worried about having too much area for it to sound good. SMD Tool Map https://www.stevemeadedesigns.com/board/topic/193176-smd-tool-map-new-november-2014/ Build log https://www.stevemeadedesigns.com/board/topic/197217-reeds-03-tahoe-hat-sqaq-singer-xs-shca-cockbox-80prs/?page=32
Triticum Agricolam Posted January 6, 2015 Report Posted January 6, 2015 Sounds good. I've looked at any "enclosure help" I see pop up for tips and education because I've never designed or built my own before and wanted to give it a shot. I'll see what I can do about the port velocity but i was worried about having too much area for it to sound good. You would have to have waaaay too much port area before it would start to be a problem. Too little area is far more likely to cause you issues. "Nothing prevents people from knowing the truth more than the belief they already know it.""Making bass is easy, making music is the hard part."Builds:
reedal Posted January 6, 2015 Author Report Posted January 6, 2015 Ok. So just try to get the velocity under 25 m/s? I think to get that had me at around 80-90^2 of port. SMD Tool Map https://www.stevemeadedesigns.com/board/topic/193176-smd-tool-map-new-november-2014/ Build log https://www.stevemeadedesigns.com/board/topic/197217-reeds-03-tahoe-hat-sqaq-singer-xs-shca-cockbox-80prs/?page=32
reedal Posted January 7, 2015 Author Report Posted January 7, 2015 To make sure I'm doing it right, when inputting the box volume on WinISD, I use the gross volume? or net after displacements (excluding port displacement)? Because you can account for port displacement when you change your port area/length to get the frequency and velocity you want SMD Tool Map https://www.stevemeadedesigns.com/board/topic/193176-smd-tool-map-new-november-2014/ Build log https://www.stevemeadedesigns.com/board/topic/197217-reeds-03-tahoe-hat-sqaq-singer-xs-shca-cockbox-80prs/?page=32
Joe X Posted January 7, 2015 Report Posted January 7, 2015 Net volume is what it's asking for when you have the specs you want then you do the layout with Torres or something like it.
reedal Posted January 7, 2015 Author Report Posted January 7, 2015 Ok thanks again. I got it where I want it and where it needs to be then. 22 m/s with a five inch wide port. Appreciate the help. SMD Tool Map https://www.stevemeadedesigns.com/board/topic/193176-smd-tool-map-new-november-2014/ Build log https://www.stevemeadedesigns.com/board/topic/197217-reeds-03-tahoe-hat-sqaq-singer-xs-shca-cockbox-80prs/?page=32
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