AA98hoe Posted May 9, 2012 Report Share Posted May 9, 2012 Burp it with both amps then put all subs on 1 amp and test TEAM DC AUDIO VEHICLE:98 chevy tahoe 2wd 3-4 drop HEADUNIT:alpine 9886 PREAMP:arcaudio FRONT STAGE:4-6 1/2s selinium,DD component set and 4-selinium tweeters in each door KICKPANELS:jl audio 5 1/4 REAR DOORS: dd components 6 1/2s HIGHS AMPS:zapco 750.2 on front doors,zapco an another 750.2 on kicks and rear doors SUBS:4-ascendant audio 18s with 5 spiders in a custom box built by KINGSUV SUB AMP: 2-dc7.5s ALTERNATORS: 3-mechmans 1- 425comp, 1-smd spec350, 1-270 with adj voltage harness on custom dc bracket WIRE:10-runs 0g front to back BATTERIES:6-d1400s TL results:157.1 at 38hz and 156.8 at headrest score @37hz. STATE AND NATIONAL RECORD IN MECA S5. Link to comment Share on other sites More sharing options...
ALPINE408 Posted May 9, 2012 Report Share Posted May 9, 2012 im just happy it was not a blown sub and i dunno how many times i told mario SOMETHINGS wrong been there many times and you would not lose 3 dbs by changing a port by a half an inch Have you ever had your woofers blown? Link to comment Share on other sites More sharing options...
MarioB Posted May 9, 2012 Author Report Share Posted May 9, 2012 i thought it was driver side that was not working but mario said the rca was for the pass side hard to tell when the comperrsion of one sub moves the other I hear that. I'm wondering how it did it, with twice the usable airspace and the possibility of a little bit of cancellation from that other sub doing exactly the opposite of the sub that was working. Really interesting. Edit: Half the Power Half The cone Area Box is twice as big Maybe a little cancellation Say Half the output.... Ehh... I'm thinkin outloud. Shits crazy. nothing is wrong with sub/subs they are perfectly fine. just one of the RCA wires was not in all the way causing sub not to work. how it had happen not to sure maybe when I was trying to clamp the amps i could have knocked it loose. Its tight back there. 12- DC Audio m2Lvl3 12's1- Hertz HSK3 way2- DC5K's2- ZX350.42- Stinger SP1500D batteries in rear3- runs of 1/0ga. to the rearTeam DC Audiodcsoundlab.com Quality is all in how you take pictures I have plenty of projects that look WAY better on camera then in person crazy to fit so many in so little. Reminds me of some of the porns I've seen? Link to comment Share on other sites More sharing options...
MarioB Posted May 9, 2012 Author Report Share Posted May 9, 2012 Burp it with both amps then put all subs on 1 amp and test there D1.4 so the ohm loads would not be the same with 1 amp and 2 amps 12- DC Audio m2Lvl3 12's1- Hertz HSK3 way2- DC5K's2- ZX350.42- Stinger SP1500D batteries in rear3- runs of 1/0ga. to the rearTeam DC Audiodcsoundlab.com Quality is all in how you take pictures I have plenty of projects that look WAY better on camera then in person crazy to fit so many in so little. Reminds me of some of the porns I've seen? Link to comment Share on other sites More sharing options...
Blackedout Posted May 9, 2012 Report Share Posted May 9, 2012 i thought it was driver side that was not working but mario said the rca was for the pass side hard to tell when the comperrsion of one sub moves the other I hear that. I'm wondering how it did it, with twice the usable airspace and the possibility of a little bit of cancellation from that other sub doing exactly the opposite of the sub that was working. Really interesting. Edit: Half the Power Half The cone Area Box is twice as big Maybe a little cancellation Say Half the output.... Ehh... I'm thinkin outloud. Shits crazy. nothing is wrong with sub/subs they are perfectly fine. just one of the RCA wires was not in all the way causing sub not to work. how it had happen not to sure maybe when I was trying to clamp the amps i could have knocked it loose. Its tight back there. I understand it was just an RCA. I don't understand the output.... Twice the cone area and (Theoretically) twice the power yeilded 3DB. But the airspace of the box was doubled and cancellation might have been a factor when the RCA was unplugged. Hard to catch where I'm going with this, because I don't know where I'm going with it. It's just weird that it happened to put out such a high score when it was in a box that was (possibly) too big. Trunk Build Log Link to comment Share on other sites More sharing options...
ALPINE408 Posted May 9, 2012 Report Share Posted May 9, 2012 i see where your going blacked out its strange how it works same thing happend to me but the subs were in separte boxes did a 152.1 iirc an rca pulled out and still did a 149.x adding the second sub only added less than 3 dbs you would think 2 subs doing a 149.x each would have more output than an add 2 dbs Have you ever had your woofers blown? Link to comment Share on other sites More sharing options...
MarioB Posted May 9, 2012 Author Report Share Posted May 9, 2012 Now I see what your talking about. hmmmmm...... 148.5X2=297db 12- DC Audio m2Lvl3 12's1- Hertz HSK3 way2- DC5K's2- ZX350.42- Stinger SP1500D batteries in rear3- runs of 1/0ga. to the rearTeam DC Audiodcsoundlab.com Quality is all in how you take pictures I have plenty of projects that look WAY better on camera then in person crazy to fit so many in so little. Reminds me of some of the porns I've seen? Link to comment Share on other sites More sharing options...
Blackedout Posted May 9, 2012 Report Share Posted May 9, 2012 Now I see what your talking about. hmmmmm...... 148.5X2=297db Lol... The Theory is that double the power adds 3db. Which is cool. You had half the power, you lost 3 db. But that doesn't take into account that you doubled the airspace, and 113 sq inches of your baffle acted like a passive radiator with a magnet. Trunk Build Log Link to comment Share on other sites More sharing options...
Sheena Posted May 9, 2012 Report Share Posted May 9, 2012 Now I see what your talking about. hmmmmm...... 148.5X2=297db Barely louder than Meade (from a video) 09 Civic EX KDC-X395 (2) SKAR Audio VVX-12 Skar Audio SK-1500.1 4 cu ft @32 (new box and more port soon) Firing Forward not sealed off Stock 80 Amp Alt Big 3 In 1/0 Knu 2 Runs To The Back 1 Pos 1 Neg In 1/0 Knu DD-1'd 13.8v drop Link to comment Share on other sites More sharing options...
Blackedout Posted May 9, 2012 Report Share Posted May 9, 2012 Now I see what your talking about. hmmmmm...... 148.5X2=297db Barely louder than Meade (from a video) Meade did 197 DB in that video. LOL Trunk Build Log Link to comment Share on other sites More sharing options...
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