Two Type R 12" = 143dB Good/bad? :)

[PSturmer 10+ year member]

thats a good score. the R's can handle 1500 actuall watts with being careful. i have a bxi2006d on each of mine right now and they burn if played longer than like 10 seconds.

the best i have done off a daily driver box were 2 12'' R's in 4 cubes @ 34 and off 2600 watts it is able to hit a 149.8 off a tone.

 

[Beginer 10+ year member]

Thanks for advices, I will try to face ports back also I will try to wire subs and amp @ 0.5 Ohm, because in competition they were wired @ 2 Ohms. So will have more power.

PSturmer nice score man, you got 149.8dB on termlab?

 

[15nissen 10+ year member]

Hello,
yesterday was local dB Drag competition.

I tryed my luck and my record was 143.0dB with two Alpine Type R 12" powered by Alpine MRD-M1005 1000W rms @ 2Ohms. I was playing soundtrack.

Box is 5 cu.ft, tuned to 40Hz calculated by subwoofertools.

What you guys think about this? Can I get more dB with same amp? //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Maybe this amp is too weak for two type r's ?

Maybe if I would tune box to 50Hz and play one freq. I would make more dB's?

What is your record with two Type R's?

Waiting for your comments //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Box photo:

its a great baseline to work off of and improve. I personally did 144.5 @ headrest with a jezzy song that peaked rather low (low 40's freq)

on music with 2 12in R's. Sadly i never tested on the dash. This was in a civic

trunk car btw.

 

[Beginer 10+ year member]

its a great baseline to work off of and improve. I personally did 144.5 @ headrest with a jezzy song that peaked rather low (low 40's freq)
on music with 2 12in R's. Sadly i never tested on the dash. This was in a civic

trunk car btw.

Now I have better result. 146.4dB //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

http://www.caraudio.com/forum/showpost.php?p=3180094&postcount=24

I can't edit first post //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif