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arcwcb
Junior Member
USA
153 Posts |
 Posted - 07/22/2010 : 8:35:47 PM
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| Alright, my box is going to have a single port tuned real low for music, and a second, removable port of the same length (port goes straight out of box, no loss or gain in box volume) for SPL. I checked and it's legal to do this. I know it's not the right way to tune to get the most SPL, but would a pretty safe bet for SPL tuning be about 45 Hz? It won't be the best, but it SHOULD be more than 30-33 Hz, correct? I just want a higher tuning so I can compete and have fun while staying very musical. Any thoughts on where to tune for SPL? |
T1500-1bd, T400-4, T400-2, 1 DC XL 10, 2 P1S48, 4 T1682C, 2 RFC1D, All RF wiring and accessories |
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whitling
New Member
USA
70 Posts |
Posted - 07/24/2010 : 04:27:33 AM
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| ive heard of people even tuning all the way up to 55hz. ive never heard a box tuned that high though so i can really give you an honest opinion. the 32ish hz area is more for daily listening. my box is tuned to right around 32hz and sounds pretty good for the most part. |
**4 p2's + 1 p1000-1bd + 1ohm load = :) |
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OceanSoundz
Senior Member
Canada
1553 Posts |
Posted - 07/24/2010 : 05:47:19 AM
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The frequency you tune to for SPL is dependent on the vehicles resonant frequency. All vehicles are different, and there is a way to find this frequency. Unfortunately, I don't know exactly how it's done.
A quick search will bring you some information. |
2007 Chevrolet Trailblazer
****waiting for the new T2****
Rockford Fosgate T1500-1bd |
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EmperorJJ1
Advanced Member
USA
4124 Posts |
Posted - 07/24/2010 : 7:28:41 PM
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| also sorta depends on what organization your competing in |
http://www.cardomain.com/ride/2604492
FIRST DUAL ALTERNATOR COBALT SS/SC
Second 360.2 installed 2/6/09 |
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arcwcb
Junior Member
USA
153 Posts |
Posted - 07/24/2010 : 8:50:35 PM
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| Midwest SPL, it's really the only organization that has more than 2 shows within an hour drive of me lol. I've heard good things from other competitors in it. |
T1500-1bd, T400-4, T400-2, 1 DC XL 10, 2 P1S48, 4 T1682C, 2 RFC1D, All RF wiring and accessories |
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EmperorJJ1
Advanced Member
USA
4124 Posts |
Posted - 07/24/2010 : 9:37:34 PM
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| is it legal or outlaw? wheres the meter placed and can you open any doors or windows or is it sealed up? |
http://www.cardomain.com/ride/2604492
FIRST DUAL ALTERNATOR COBALT SS/SC
Second 360.2 installed 2/6/09 |
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arcwcb
Junior Member
USA
153 Posts |
Posted - 07/25/2010 : 3:30:18 PM
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| Meter is on the dash, doors and windows can be open or closed. |
T1500-1bd, T400-4, T400-2, 1 DC XL 10, 2 P1S48, 4 T1682C, 2 RFC1D, All RF wiring and accessories |
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EmperorJJ1
Advanced Member
USA
4124 Posts |
Posted - 07/25/2010 : 4:13:55 PM
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| id guess 45 would be good. normally higher tuning like 55 and 60 are better for sealed up where 45ish is better for if you can open a window or door. you may want to ask on the midwest spl forum if they have one thou I've never competed in it. finding the resonate freq of the vehicle helps alot thou |
http://www.cardomain.com/ride/2604492
FIRST DUAL ALTERNATOR COBALT SS/SC
Second 360.2 installed 2/6/09 |
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arcwcb
Junior Member
USA
153 Posts |
Posted - 07/25/2010 : 8:15:59 PM
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| I definitely plan on doing the resonante frequency next summer, but I have 2 comps left this year for my little DC 10 and I just wanted something good enough to finish the summer having fun and get some numbers from this sub. I was already leaning towards 45 Hz, it seems like a good middle ground, there is probably a little left to gain, but I don't have to worry about going too high with tuning either. Thanks for the help! One other question, is there a recommended ratio for port area to box size in SPL, or is bigger always better when just burping a sub? |
T1500-1bd, T400-4, T400-2, 1 DC XL 10, 2 P1S48, 4 T1682C, 2 RFC1D, All RF wiring and accessories |
Edited by - arcwcb on 07/25/2010 8:17:32 PM |
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sactownstang
Advanced Member
USA
6430 Posts |
Posted - 08/04/2010 : 11:37:21 AM
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The vehicle is a definite factor in what freq to burp.
I would talk to a few competitors at those shows u attend.
They can throw u a few tips! Also adding power can't hurt!
Na bigger ain't better, not all about how much cone area you have! I have beat 6 Jl 13w7 with a pair of RF 12" TRF.
Best way to get louder is to use a mic and test,test,and did i say test? Your port change will be fine. Good luck with it.
Let us know how it turns out!
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http://www.sounddomain.com/id/sactownstang
http://www.sounddomain.com/ride/2469932/
140.1 10/7/04
154.5 10/8/06 Outlaw
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OceanSoundz
Senior Member
Canada
1553 Posts |
Posted - 08/05/2010 : 05:53:29 AM
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| And most important, just go out and have fun! |
2007 Chevrolet Trailblazer
****waiting for the new T2****
Rockford Fosgate T1500-1bd |
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Discussion Forum
What to tune to for SPL only?
