i was looking at video clips on realm of excursion and one guy had a 15 eclipse ti in a 6 cu ft sealed enclosure and was running 1000 watts to it and it had a crazy amount of excursion. i have my 15 ti in a ported enclosure powered by an audiobahn a18001dt that claims 1200 rms and i am not getting near the excursion the guy in the video is. is this because of the box or is my amp severely overrated and his is underrated meaning he is getting more watts. the only thing i can think of that could be hindering my system is i only have 6 gauge industrial wire instead of 2 or 4 gauge car audio wire. i have a capacitor though.
capacitator wont help you, you need to upgrade your B+ and ground though. however, a ported enclosure limits a subwoofers excursion at and above tuning. i just leanred today that one octive above tuning the cone moves alot and i know that below tuning you can even risk too much excursion and woofer damage. play a tone below the tuning of your box and you will see some crazy excursion, be careful though. also, not only was that enclosure sealed but it was 6cuft. thats a very large enclosure, the larger the enclosure the closer it is in freeair and the easier it is to get the cone to move.
im not sure what my box is tuned to but i have played some test tones that i got from realm of excursion and still cant get anything close to the excursion the ti in the video gets. what could i do to get my sub to move that much without the risk of damaging my sub? i got the specs from eclipse for the box but due to excitement and therefore some poor planning the box is a little below the recommended cu ft (4 compared to 4.5 cu ft). what should i go with for a new box? sealed/ported? also i have heard that eclipse ti's are more seal enclosure subs has anyone had any experience with the eclipse ti's in both enclosures?
jonathan says they really open up in ported so stay with ported, its really help to know your tuning. id find out, measure the length of yoru port, the width and height, and measure the exterior dimensions of the whole box and i'll let you know the tuning. maybe tomorrow though im bout to go to bed.
if you play a 1-35hz sweep your sub will definetly get moving. to ensure no damage youd have to have ur SSF set just below tuning of the box though.
Make sure you have your port tuned correctly too. 32Hz is awesome for the Ti, but gaining full excursion is pretty hard. The 15" is approaching 4" at full extension, and that's just physical movement. Actually getting the sub to move that far requires some experimenting with enclosure design, different tones, and some wattage...
the outside dim. on the box is 18" deep x 28" wide x 18" tall using 3/4 mdf and the inside port dim. is 15" tall x 3" wide x 18" deep. no i have not had my sub metered. i was thinking of borrowing a handheld dB meter from school but im not sure how accurate of a reading i would get. how would the sub not be louder with more excursion in a sealed enclosure compared to a ported enclosure with less excursion?
excursion doesnt mean as much in terms of SPL as cone area does. when your ported you have more cone area, technically. the air moving in the port moves just like the cone, creating a sound wave from it also. theres probably other reasons a ported enclosure is louder but i know that is one of them.