Fi Q's at comp...
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Gold Member Username: Thomas_gNM Post Number: 2303 Registered: Oct-05 | Ok next month i plan to go to a small comp and im going to take my 2 18" Q's. I think i found the resonant frequency of my vehicle like around 45hz. Should i face the subs up and the port back towards the back of the explorer and a huge port like 300+ sq in?? I know they arnt really spl oriented, but they do get really loud so im pretty sure ill take it, just with my sealed enclosure and without my HO alt, im beating everyone i know. Do you guys think its POSSIBLE to hit like 145+ with 2 18" Q's and 3200 watts rms?? I know its all install but just wanting to know if its a possibility because i dont really know how loud dbs are ive never been to a comp. Thanx. |
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Gold Member Username: OglejustPost Number: 1620 Registered: Aug-06 | dont do 300 sq in thats 2 much.... 2 much port area isnt good. and u should do better than 145 w/ that much power and the subs u picked |
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Silver Member Username: Andrew571Stillwater/Edmond, Oklahoma USA Post Number: 810 Registered: Oct-05 | do u already have the Qs? I have an 18 for you |
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Gold Member Username: Thomas_gNM Post Number: 2304 Registered: Oct-05 | wouldnt 332.5 sq in be good?? If you use the subwoofer box calculator it gives like 350 so there wont be port noise with the Q's xmax, and isnt it true more port area more spl?? Its not like im doing 600 sq in because then wouldnt it lose alot of compresion?? Yes i already have two 18" Q's, im gonna use them for this small comp next month, then in July for the more serious comp im gonna do 8 12" premiers. This is my box plan for the 18" Q's. subs up port to back of suv. height 20 in, width 49in, depth 32in. port 47.5in wide and 7 in high at the bottom of the back of the enclosure tuned to about 48hz but after displacement of subs and bracing like around 45hz. What you think? |
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Gold Member Username: Thomas_gNM Post Number: 2305 Registered: Oct-05 | o ya and the box should be like around 13 cubes after displacements and 15.5 net volume, or so. |
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Gold Member Username: Thomas_gNM Post Number: 2309 Registered: Oct-05 |   |
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Gold Member Username: JohnfiacA-ToWn, 152-153db Da... My wangers b... Post Number: 2735 Registered: Mar-06 | SPL or SQL? If you going for SPL like a burp box dont make it that big thats way to big i think |
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Gold Member Username: Thomas_gNM Post Number: 2310 Registered: Oct-05 | Its gonna be for pure SPL at the comp. What do you guys think then? About 275sq in? Its gonna be tuned to 45hz. Does anyone know where i can upload a vid besides youtube so i can post vids of my Q's?? |
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Silver Member Username: Smoke05Tucson, Arizona U.S. Post Number: 589 Registered: Jan-07 | the best thing you can do is go to the fi fprum and ask scott, he will know what would be the best. |
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Gold Member Username: Naledge503Http://com4.runboard.c... Post Number: 1333 Registered: Jun-06 | Fi recommends 12-16 SqIn of port per CuFt |
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Gold Member Username: Thomas_gNM Post Number: 2311 Registered: Oct-05 | Does anyone know the link to the Fi Forum?? |
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Gold Member Username: Tremor1127Fi Car Audio has got m... Post Number: 1506 Registered: Aug-06 | http://www.soundsolutionsaudio.com/forum/index.php?showforum=51 |
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Gold Member Username: WingmanaliveA pic is worth 1000 posts!! Post Number: 6477 Registered: Jun-06 | http://www.soundsolutionsaudio.com/forum/index.php?s=138fd6575e7be8b3709b25498d3 f5dca&showforum=51 |
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Gold Member Username: WingmanaliveA pic is worth 1000 posts!! Post Number: 6478 Registered: Jun-06 | Quick bugga!! |
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Gold Member Username: CenusHicksville, Ohio Post Number: 3144 Registered: Jan-05 | for a spl box of that size 300sq inches of port would be pretty good, but anything over 400 imo would be overkill, in a good box i could see a 149+db score, but it all depends on your install, also i hoped you upgraded your electrical system to run all that power. |
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Gold Member Username: Thomas_gNM Post Number: 2312 Registered: Oct-05 | Thank you guys. I might go later to town to build the enclosure. |
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Gold Member Username: Thomas_gNM Post Number: 2313 Registered: Oct-05 | Thank you guys. I might go later to town to buy the stuff to build the enclosure. |
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Gold Member Username: Nd4spd18Southeast PA Post Number: 2363 Registered: Jul-06 | Damn dude what kind of car you got with two 18" Qs in it? Dont those things take like 6 ft3 each? |
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Gold Member Username: Thomas_gNM Post Number: 2316 Registered: Oct-05 | They are in a 93 ford explorer. |
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Silver Member Username: Solobaric4lifePost Number: 813 Registered: Jan-07 | "Do you guys think its POSSIBLE to hit like 145+ with 2 18" Q's and 3200 watts rms??" yes that is definetaly possible |
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Gold Member Username: Thomas_gNM Post Number: 2319 Registered: Oct-05 | Do you guys think its possible to hit 150+ db with 8 07model 12" pioneer premiers tuned to the resonant frequency of my vehicle with 3200 watts rms?? Premiers do get loud!! If my Q's dont work out for me because now that one of thems, tinsel lead broke then i definately will get all those premiers. |
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Gold Member Username: JuliobSanto DomingoDominican Re... Post Number: 4592 Registered: Dec-05 | you should. If not then just upgrade your electrical system. Tj i think you can reach 145+ with those Q. IMO |
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Gold Member Username: Thomas_gNM Post Number: 2329 Registered: Oct-05 | thanx Juliob, i was going to but since one messed up im gonna have to go with the premiers, they will be louder though. |
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Silver Member Username: J_c_wheeler8Columbus, IN United States Post Number: 556 Registered: May-06 | I have an enclosed trunk and I was wondering if a box design like this for 1 18" FI Q Would be a good idea? Also, Do you think a 38"x18"x14" box is too small for this single sub?  |
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Gold Member Username: Thomas_gNM Post Number: 2330 Registered: Oct-05 | I do believe Eric on here has that design of enclosure with an 18" Q in his trunk. Ask him how its sounds, IMO it would probably rattle the trunk alot. Check out his vid on ROE(realmofexcursion.com). That box would only be about 4.35 cubes of airspace, plus you have to factor out the displacement of the port and subwoofer. If thats all the room you can work with i would go sealed. Honestly since its in a car though id probably go with a 12" or a 15" ported, tuned low. |
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Silver Member Username: J_c_wheeler8Columbus, IN United States Post Number: 563 Registered: May-06 | Hmm.. 12" or 15" if i were only getting one, and do you think i should build a box similar to the one i drew above, or should i mount the sub on the side of it? |
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Gold Member Username: Thomas_gNM Post Number: 2331 Registered: Oct-05 | I would fire the sub and the port to the front of the car. Thats the best way subs sounded in my car in the trunk, but cars vary. |
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Silver Member Username: J_c_wheeler8Columbus, IN United States Post Number: 570 Registered: May-06 | Goddamn I still cant find plans for a 15" Q box ported to 32Hz |
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Silver Member Username: Andrew571Stillwater/Edmond, Oklahoma USA Post Number: 822 Registered: Oct-05 | John Weeler, i have that |
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Silver Member Username: J_c_wheeler8Columbus, IN United States Post Number: 572 Registered: May-06 | What do you have? |
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Silver Member Username: Andrew571Stillwater/Edmond, Oklahoma USA Post Number: 823 Registered: Oct-05 | 15" Q in a 3.5 cu ft box tuned @ 32hz |
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Silver Member Username: Andrew571Stillwater/Edmond, Oklahoma USA Post Number: 824 Registered: Oct-05 | mhhmm |
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Silver Member Username: Andrew571Stillwater/Edmond, Oklahoma USA Post Number: 825 Registered: Oct-05 | F[_]CKING BUMP |
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Silver Member Username: J_c_wheeler8Columbus, IN United States Post Number: 573 Registered: May-06 | ah sorry man, the republican debate is on ;) That sounds just like what I need. Do you have dimensions for that? Port width, Length, Etc? PIX? |
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Gold Member Username: Thomas_gNM Post Number: 2332 Registered: Oct-05 | what are the max width and height you can work with?? Have you tried the subwoofer tools calculator?? |
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Silver Member Username: J_c_wheeler8Columbus, IN United States Post Number: 575 Registered: May-06 | like 36 inches x 16 inches x 14.5 inches roughly |
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Silver Member Username: Fi_car_audioHades, NV Post Number: 193 Registered: Sep-06 | Definitely on the small side of things... 3.76 before port and driver. Running through the absolute minimal design I can do... you will be too small. Doesnt look like a Q will quite make it in that space. Find another .5 cuft and your golden. Is this for SQ, or all around? |
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Silver Member Username: J_c_wheeler8Columbus, IN United States Post Number: 589 Registered: May-06 | im trying a 4 cu ft design now 33x16.5x21 but i have to see if it will fit in my trunk. |
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