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Bronze Member Username: TurnmatPost Number: 18 Registered: Feb-07 | i have two Alpine 12" type R subs, they hit 129.7 db sealed, 127.7 db ported...why is that? they were tuned to the sweet spot both times... thanks, matt |
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Silver Member Username: JblanfordPost Number: 555 Registered: Oct-06 | what was the box tuned to ? |
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Bronze Member Username: TurnmatPost Number: 19 Registered: Feb-07 | 33-36 hz |
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Gold Member Username: InsearchofbassPost Number: 4998 Registered: Jun-04 | alot of possibilities but ported needs more airspace than sealed so if the box wasnt the right size that can affect the outcome ....even placement of the box can change the outcome but when you port if you tune to say 35 hz you generally dont hit loudest at that frequency usually it's 3 to 5 hz higher....ported also generally gives you a 3 d boost in that frequency range but most cars hit best in the 50 to 60 something hz range and a sealed box depending on the size could also create a boost in the higer bass ranges especially if its a smaller than needed sealed box size....also you didnt say that you used a specific bass frequency Id assume you used a specific song which also throws in other possible possibilities for your lower spl score from ported to sealed |
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Bronze Member Username: TurnmatPost Number: 20 Registered: Feb-07 | yea i used a song...what subs would you recommend for spl...i was going to install 6-8 alpine type R subs all in ported boxes...but i am open to suggestions. |
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Gold Member Username: Nyyfan13Fi SSD USA Post Number: 4257 Registered: Jul-06 | a couple fully loaded BL's could be awesome... ficaraudio.com check out also ddaudio.com tcsounds.com audioque.com others too |
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Gold Member Username: Extrmndor3IF U HEAR ME... I GOT KING K... Post Number: 4079 Registered: Feb-06 | want to hit 140+???? eaisly?? keep your 2 subs only get a hifonics bxi2006d or a bxi1606d and go to thecaraudiobox.com and get a quote for a box...... and while mark builds yoru box try to have alil fun of hix videos... |
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Gold Member Username: InsearchofbassPost Number: 4999 Registered: Jun-04 | your two alpine type r's are more than up to the task. Get a box building program and run the thiel small parameters. Then you might want to test your in car bass response and out of car bass response (subwoofer box in and out of your car using a spl meter to find how much the interior of your car boosts those frequncies and chart them out on paper.) Then taylor your box to give as close to even response as possible with your box programs assistance. |
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Bronze Member Username: TurnmatPost Number: 21 Registered: Feb-07 | to hit the higher spl levels you want to displace more air right? |
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Gold Member Username: InsearchofbassPost Number: 5000 Registered: Jun-04 | well yes but thats not the only way to increase spl....placement, lowering box rise, putting the subwoofers in ideal box sizes, porting the box properly to allow sufficient airflow to aviod port resistance, sealing the box with fiberglass to get airtight seal, using bracing to avoid box flex, even matting your car to avoid body flex even adding a double face on box but some of these things are only needed under extreme circumstances.......doubling amp pwer also increases spl usually 3 db |
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Bronze Member Username: TurnmatPost Number: 22 Registered: Feb-07 | so should i go with the alpine setup or another? like two Q18's or two dd 9100c's |
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Gold Member Username: Extrmndor3IF U HEAR ME... I GOT KING K... Post Number: 4082 Registered: Feb-06 | keep your type r juzz get a bigger amp and a box.... |
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Bronze Member Username: TurnmatPost Number: 23 Registered: Feb-07 | just the two? cuase i have two more brand new ones sitting in my closet... I am trying to create one of the most insane setups i can...lol. |
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Gold Member Username: Extrmndor3IF U HEAR ME... I GOT KING K... Post Number: 4084 Registered: Feb-06 | ... ok use the four of them and get a tcab box... |
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Bronze Member Username: TurnmatPost Number: 24 Registered: Feb-07 | what do you think i will be hitting for db's? |
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Gold Member Username: Extrmndor3IF U HEAR ME... I GOT KING K... Post Number: 4085 Registered: Feb-06 | http://www.youtube.com/watch?v=wpLlnbQ2yfQ go watch that video.... the one who is recording its mark the one who builds the boxes he specialize in type r...... |
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Bronze Member Username: TurnmatPost Number: 25 Registered: Feb-07 | holy f*** that is insane |
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Gold Member Username: Extrmndor3IF U HEAR ME... I GOT KING K... Post Number: 4086 Registered: Feb-06 | go get a tcab box my friend.... ills how the video of my tcab box... the quatity of mys et up ruined the spl so if i get 3 instead of 6 i can get alot louder using same power that i have right now http://www.youtube.com/watch?v=xy1Gb5uCvxM mine its str8t for sq |
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Gold Member Username: Extrmndor3IF U HEAR ME... I GOT KING K... Post Number: 4087 Registered: Feb-06 | http://youtube.com/watch?v=KgYLZjTh5IY&mode=related&search= |
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Bronze Member Username: TurnmatPost Number: 26 Registered: Feb-07 | thats insane...do you know what kinda spl you hit even for sq you have to hit some pretty crazy db. so do you think i would be better with two three or four subs? we are talking about a dodge intrepid to |
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Gold Member Username: Extrmndor3IF U HEAR ME... I GOT KING K... Post Number: 4088 Registered: Feb-06 | if u have a suv 4 its the way to go in a tcab box... with a oool amp.... if u have a car 2 type r will be best... with like ahifonics bxi2006d |
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Bronze Member Username: TurnmatPost Number: 27 Registered: Feb-07 | yea right now i have a Alpine pdx 1.1000 amp its only 1000 watts rms... |
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Bronze Member Username: TurnmatPost Number: 28 Registered: Feb-07 | thanks for all the help i really appreciate it matt |