ClinicCars Posted January 8, 2011 Report Share Posted January 8, 2011 (edited) Hi, my name is Frederic, I am in France, I am 30 years old and I am an electrician in a college. Really saddened for my language, but I use a translator ! I am the happy owner of a DC 18" XL Dual 2 ohms. Will be running off SoundStream TRX 2000D with 1/0 AWG and a Optima Yellow Top 4,2L. The vehicle is a Peugeot 207 SW. The box : - 8,61 cuft total - 7 cuft - 0,25 cuft displacement woofer - 112 sqare inches of port and 15” length I don’t know the frequency of the box. More it’s low, better it is ! Preview The box The port Battery and fuses Emphaser EX15T2 VS DC Audio LVL 4XL 18" !! DC 18" only And in the car And my new Clarion (DXZ588RUSB) But I have a problem, the frequency of the port is too high according to Box Tuning Calculator (39.94Hz). I listen to musics slowed down from 20 to 40 Hz, the box has difficulty in reproducing them. If I reduces the port, that will be good ? Before : Future I'm going to add a wooden thickness above (port length : 15"--> 16"). By reducing the port could I shoot from 20hz to 40Hz ? Thank you in advance. Edited January 8, 2011 by ClinicCars Quote Link to comment Share on other sites More sharing options...
IH8PunkRok Posted January 8, 2011 Report Share Posted January 8, 2011 if you do that you could have port noise because that port is tiny Quote -Matt2005 Dodge Magnum RTJVC KD-AVX1 2 PPI S580.2 Obsidian Audio ST1 Horn Tweeters PRV 8MB450s Audio Legion 3500.1D 2 RE MT 18s 360 ah LiFePO4 BatterySHCA 2/0 155.2 @ 29 hzKicker CVR 15's buildDD 3512e buildMini T-Line Build(6) 8s BuildNightshade 15s Wall BuildMagnum AB XFL 12s BuildNewest Magnum Build Link to comment Share on other sites More sharing options...
ClinicCars Posted January 8, 2011 Author Report Share Posted January 8, 2011 Thanks ! I shall better make extend the port length (35" for 33,97 Hz) ? Quote Link to comment Share on other sites More sharing options...
iKidwell Posted January 8, 2011 Report Share Posted January 8, 2011 you can extend the port, just make sure that sub still has about 6 cubes net..but 42 hz is too high to tune an 18 for daily in my opinion. Quote c'mon now, if i was shooting an 8 year old, it wouldnt be MY 8 year old. i recently got a Pyle PL1590BL and i was building an enclosure for it tuned to 25 hz. i didn't have any tools to cut a circle so i hit it with a big hammer. 2003 Infiniti G35 Sport Sedan Build in Progress Link to comment Share on other sites More sharing options...
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