ChevyBoy95 Posted March 9, 2015 Report Share Posted March 9, 2015 Doubling come area is a 3 dB increase. Doubling wattage is a 3 dB increase. It takes 10 dB to sound twice as loud. You won't notice a 3 dB increase on music. Redesign your box after you research done about how to even build a good one. Not true. Maybe in theory land it is true, but not in practice. Best Score to Date : 160.5 dB Outlaw (47Hz)[4 XM 15's & 2 Taramps Bass 12k's] BL : http://www.stevemeadedesigns.com/board/topic/147800-chevyboy95s-4-15s-7krms-wall-1533-db-on-half-power/YouTube: http://www.youtube.com/hitemwiththeflex/ Link to comment Share on other sites More sharing options...
rockFord_Expedition Posted March 9, 2015 Report Share Posted March 9, 2015 New enclosure higher tune more cone area Old School/New School RF Build March 2015 SOTM Winner How to crimp large wire Link to comment Share on other sites More sharing options...
Krakin Posted March 9, 2015 Report Share Posted March 9, 2015 I have tested that theory many times with myself and friends. I have done variations of change in 0.5 dB to 5 dB changes and right around 4 dB on music is where everyone can tell the instant change. These tests aren't 100 percent in a controlled environment, and haven't exceeded roughly 100 dB. I have even gotten it to where if I used 1 dB increments I lowered the output by 15 dB and the participant had no clue until I shot the volume back up in one change. Krakin's Home Dipole Project http://www.stevemeadedesigns.com/board/topic/186153-krakins-dipole-project-new-reciever-in-rockford-science/#entry2772370 Krakin, are you some sort of mad scientist? I would have replied earlier, but I was measuring the output of my amp with a yardstick . . . What you hear is not the air pressure variation in itself but what has drawn your attention in the two streams of superimposed air pressure variations at your eardrums An acoustic event has dimensions of Time, Tone, Loudness and Space Everyone learns to render the 3-dimensional localization of sound based on the individual shape of their ears, thus no formula can achieve a definite effect for every listener. Link to comment Share on other sites More sharing options...
kirill007 Posted March 9, 2015 Report Share Posted March 9, 2015 After 145 dbs every 3 db is noticeable difference Doubling power doesn't = 3 dbs increase it all depends on the installation if had up to 5 dbs to as low as .5 db increase when doubleing power To the op no matter what you do you will get use to the bass and will always just want a little bit more Measured power? Or double the amplifiers? With no changes what so ever to the install? A 3dB boost is in ideal conditions and is the maximum you gain by doubling power. Doubling come area is a 3 dB increase. Doubling wattage is a 3 dB increase. It takes 10 dB to sound twice as loud. You won't notice a 3 dB increase on music. Redesign your box after you research done about how to even build a good one. So if that's the case why does a 150 and a 155 feel and sound like whole different worlds?I shouldn't notice unless I went from a vehicle that did 50's to one that does 60's right? But fact is you can and do notice a difference at less than a 10 db increase. Sound=/= feel. Ears=/= body. In a car it might sound quite louder because of different vibrations (dash rattling, windows,...) that the sound pressure causes. That last sentence doesn't even make sense if you've read his comment properly. Thinking is the root of all problems... You ALWAYS get what you pay for. Link to comment Share on other sites More sharing options...
Gil Loyola Posted March 9, 2015 Author Report Share Posted March 9, 2015 Tanks guys ima build another box and tune to 32/33 hz and see what happens.....is 80^2 of port good enough? Link to comment Share on other sites More sharing options...
Gil Loyola Posted March 9, 2015 Author Report Share Posted March 9, 2015 oh Yea and they take the powe For about a minute before they get hot jajajaja ima get tantric hdd next....voltage wise im dropping to 13.5 at the amp Link to comment Share on other sites More sharing options...
juan777 Posted March 9, 2015 Report Share Posted March 9, 2015 Tanks guys ima build another box and tune to 32/33 hz and see what happens.....is 80^2 of port good enough? Start a new thread in the Enclosures section and post your max dimensions current vehicle, equipment, desired tuning etc... Someone will assist you with a box design. The L@zy Hoe 2005 Chevy Tahoe 2,500 Watts of Highs/Mids 4 10 midrange 4 6.5 midwoofers 4 Tweeters 6 Supertweeters 2 Lithium 80AH Batteries 24K Watts 4 Custom 18s Quad alt setup Rebuilt 250amp and 3 370s Interior work by Lone Star Auto Works The Build Log Like Loud Bass? Click Here! On 12/5/2014 at 8:06 PM, juan777 said: See yall there, I'll be the drunk Mexican with aviators on. On 12/6/2014 at 10:32 PM, boom50cal said: I did see Juan LMFAO! He REALLY WAS the drunk mexican with Aviators on! Link to comment Share on other sites More sharing options...
ChevyBoy95 Posted March 9, 2015 Report Share Posted March 9, 2015 I have tested that theory many times with myself and friends. I have done variations of change in 0.5 dB to 5 dB changes and right around 4 dB on music is where everyone can tell the instant change. These tests aren't 100 percent in a controlled environment, and haven't exceeded roughly 100 dB. I have even gotten it to where if I used 1 dB increments I lowered the output by 15 dB and the participant had no clue until I shot the volume back up in one change. All I will say, midway through last year, I had an amp I was doing a 155.3 on, switched to another amp and did a 156.2. Without telling my teammates, other than, just get in and take a listen... EVERY single one of them could tell easily it was louder than before (155.3). This was only a .9 increase. Was more violent, played lower, more choke and chest pressure, the whole shibang. Maybe .2-.5 or so but a dB is a dB. Maybe it is interpreted differently at high pressure levels.... I dunno. Best Score to Date : 160.5 dB Outlaw (47Hz)[4 XM 15's & 2 Taramps Bass 12k's] BL : http://www.stevemeadedesigns.com/board/topic/147800-chevyboy95s-4-15s-7krms-wall-1533-db-on-half-power/YouTube: http://www.youtube.com/hitemwiththeflex/ Link to comment Share on other sites More sharing options...
ALPINE408 Posted March 9, 2015 Report Share Posted March 9, 2015 After 145 dbs every 3 db is noticeable difference Doubling power doesn't = 3 dbs increase it all depends on the installation if had up to 5 dbs to as low as .5 db increase when doubleing power To the op no matter what you do you will get use to the bass and will always just want a little bit more Measured power? Or double the amplifiers? good catch sorry double amplifiers i did not measure power output With no changes what so ever to the install? no other changes at all A 3dB boost is in ideal conditions and is the maximum you gain by doubling power. still gain over 5 dbs with double the amplifiers and the amps were at a high nominal ohm load when i added the second Doubling come area is a 3 dB increase. Doubling wattage is a 3 dB increase. It takes 10 dB to sound twice as loud. You won't notice a 3 dB increase on music. Redesign your box after you research done about how to even build a good one. So if that's the case why does a 150 and a 155 feel and sound like whole different worlds?I shouldn't notice unless I went from a vehicle that did 50's to one that does 60's right? But fact is you can and do notice a difference at less than a 10 db increase. Sound=/= feel. Ears=/= body. In a car it might sound quite louder because of different vibrations (dash rattling, windows,...) that the sound pressure causes. That last sentence doesn't even make sense if you've read his comment properly. Have you ever had your woofers blown? Link to comment Share on other sites More sharing options...
Karkov Posted March 9, 2015 Report Share Posted March 9, 2015 Another thing is when people talk about others being 1-2+ DB lower but SOUNDING louder. Install/enclosure makes a world of difference. 2007 Chevy Tahoe (SOLD) 12 ~ FI Audio X series 10" w/BP option 2 ~ DC Audio 5.0K @0.67 3 ~ DC Audio 5.0K @1.0 2 ~ PPI 3 way sets (not installed yet) 1 ~ RF T400-4, 1 ~ RF T600-2, 1 ~ RF T600-4 4 ~ CT Sounds 5.25" Strato comps (rear fill only) 1 ~ XS Power D4800 1 ~ XS Power D3400 8 ~ XS Power XP3000 160 stock alt, Mechman 370 Elite, 185 DC Power 320+ Sq. Ft. Sound Deadener Pioneer AVH-X5500BHS Youtube: https://www.youtube.com/user/knfjdkghjudfhsgkjdhf/videos?sort=dd&view=0&shelf_id=0 Link to comment Share on other sites More sharing options...
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