zayres29 Posted November 8, 2011 Report Share Posted November 8, 2011 what the hell is an OA 15 :pointsandlaughs: Quote Btw that was the first person. Ever banned by me while dropping a deuce. Feel privileged Link to comment Share on other sites More sharing options...
fmedina Posted November 8, 2011 Author Report Share Posted November 8, 2011 (edited) Well I thought for aero ports you need 9-13 squared of port per foot? Only reason why I went with three 4" instead of one lol Edited November 8, 2011 by fmedina Quote Link to comment Share on other sites More sharing options...
Electrodynamic Posted November 8, 2011 Report Share Posted November 8, 2011 I don't know where the idea of X in^2 per ft^3 started but it is not a very good ideology to follow. If that were the case a single port for a single 12" driver in 3 ft^3 would be 36 in^2 for 12 in^2 per 1 ft^3 which is a 3x12" port...and good luck fitting it inside the enclosure due to the port length required. That's a huge port for a single 12"! Most drivers out there can't excite that huge port area, so that huge port is wasted for the most part. As I mentioned in my last post I would ditch the third port because you don't need it / will never be able to utilize that much port area with the power you are using. In my testing with a single OA 15" I saw an increase of 1.2 dB going from a single 6" aero port to a single 8" aero port...but only while using a clamped 2700 watts. With 1500 watts there was almost zero gain (IIRC it was 0.2 dB). Quote Electrodynamic Power handling is not a power requirement! Don't install suckage! Simon Eichenberger is the man. My PM's are disabled. Link to comment Share on other sites More sharing options...
fmedina Posted November 8, 2011 Author Report Share Posted November 8, 2011 I don't know where the idea of X in^2 per ft^3 started but it is not a very good ideology to follow. If that were the case a single port for a single 12" driver in 3 ft^3 would be 36 in^2 for 12 in^2 per 1 ft^3 which is a 3x12" port...and good luck fitting it inside the enclosure due to the port length required. That's a huge port for a single 12"! Most drivers out there can't excite that huge port area, so that huge port is wasted for the most part. As I mentioned in my last post I would ditch the third port because you don't need it / will never be able to utilize that much port area with the power you are using. In my testing with a single OA 15" I saw an increase of 1.2 dB going from a single 6" aero port to a single 8" aero port...but only while using a clamped 2700 watts. With 1500 watts there was almost zero gain (IIRC it was 0.2 dB). interesting thank for clearing that up. ive been messing around and ima see how a single 6" looks. that what i have now but i kinda screwed up so i wanna do it properly this time. Quote Link to comment Share on other sites More sharing options...
Electrodynamic Posted November 9, 2011 Report Share Posted November 9, 2011 A single 6" will do very well. That's what I used in my daily setup with a single Obsidian 15" in 3.5 ft^3. Quote Electrodynamic Power handling is not a power requirement! Don't install suckage! Simon Eichenberger is the man. My PM's are disabled. Link to comment Share on other sites More sharing options...
fmedina Posted November 9, 2011 Author Report Share Posted November 9, 2011 A single 6" will do very well. That's what I used in my daily setup with a single Obsidian 15" in 3.5 ft^3. sweet so hows this? will it matter if the motor is close to the port like i have it in my design? or will it not make a difference. Quote Link to comment Share on other sites More sharing options...
Electrodynamic Posted November 9, 2011 Report Share Posted November 9, 2011 Much better. I would put the port off to one side and not in the middle of the box. That way the port isn't obstructed by anything like a big motor. Quote Electrodynamic Power handling is not a power requirement! Don't install suckage! Simon Eichenberger is the man. My PM's are disabled. Link to comment Share on other sites More sharing options...
fmedina Posted November 9, 2011 Author Report Share Posted November 9, 2011 Much better. I would put the port off to one side and not in the middle of the box. That way the port isn't obstructed by anything like a big motor. haha for sure thanks man Quote Link to comment Share on other sites More sharing options...
412 CVX Posted November 9, 2011 Report Share Posted November 9, 2011 where the fuuu did you get the model of that subwoofer? Quote Just say no to Ground Pounder Customs. My temp system build log More box buildssome cars do over 170db with one sub, so clearly my two 12"s can do that in my car, with my knowledge too! look out bitches! I'm with captain stupid. Link to comment Share on other sites More sharing options...
fmedina Posted November 9, 2011 Author Report Share Posted November 9, 2011 where the fuuu did you get the model of that subwoofer? I use Google sketchup. Downloaded from their gallery lol Quote Link to comment Share on other sites More sharing options...
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