Nikitaaa Posted July 24, 2012 Report Share Posted July 24, 2012 (edited) Bumping for curiosity Edited July 24, 2012 by Nikitaaa Quote 2007 M/T Honda Civic Coupe EX (4) Sundown Audio X-8's (2) Ampere Audio 3800.1's (3) Stinger SPV-44 Batteries (1) Mechman 240 3:1 Ratio 4th order sealed from the trunkTEAM NWSPLBest termlab scores to date in Honda trunk:151.7db legal (official) IASCA trunk 3 classBest termlab scores to date in my walled Subie:152.9db legal (unofficial) IASCA advanced 2 class155db outlaw Link to comment Share on other sites More sharing options...
OrionStang Posted July 24, 2012 Author Report Share Posted July 24, 2012 No voltage drop is ideal IF you truly have that much current capacity. If you're suspicious of the drop then it may be that you're not drawing as much current as you should on paper. Need a clamp. Is there any chance your voltmeter is defective? Maybe it's not reading correctly? Also DON'T use an ohmmeter on an energized circuit. Most DMM's (ohmmeter) have protection but certain ones can be damaged. To measure resistance, DMMs apply a small voltage and measure how much current goes through the device being measured to calculate the resistance. If the circuit or device is energized, then it will throw off the reading. I know not to use the dmm method LOL. Voltmeter is fine, tested against another meter at the rear. Need a clamp. I just want to be sure my amp is at its full potential. If my electrical really is holding up that well, I'm gonna drop to .5 ohm. Quote SMD Super Seller My Feedback Thread Link to comment Share on other sites More sharing options...
fecupe2001 Posted July 24, 2012 Report Share Posted July 24, 2012 yeah maybe the impedance rise its high as hell, my 140A alternator and 2 HC1800 electrical a couple of years ago was holding the voltage like a boss, of course, i wan´t as loud as i thought i could be, changed the box and i got 2 louder, and of course, voltage dropped 2 times lower lol Quote I´m the SPL Gains topic creator!! wanna get louder?? check this: SPL Gains. Panamenian 2009 & 2010 & 2014 Bass Race 149.9 Champion! 2 15" subs and a 2K wired at 1 ohm, http://www.stevemeadedesigns.com/board/topic/167788-fecupe2001-2-15s-on-a-2k-video-on-page-3/ 8 Massive 15" subs and small power, http://www.stevemeadedesigns.com/board/topic/179296-fecupe2001s-8-15s-4th-order-bandpass-wall/ Link to comment Share on other sites More sharing options...
n8ball2013 Posted July 24, 2012 Report Share Posted July 24, 2012 remember its tough to beat science. if you have 400 amps of current draw at 1 ohm and can only recharge 270 you are going to have a voltage drop unless you are getting stupid rise. im not an electrical engineer nor will i claim to be but there are solid formulas used to determine this. Quote THERE IS NO BUILD LOG! 1998 Chevy Silverado ext cab Alpine CDA-9887 4 Team Fi 15s 2 Ampere Audio TFE 8.0 2 Ampere Audio 150.4 3 Digital Designs CS6.5 component sets Dual Mechman 370XP Elite alternators inbound! 8 XS Power d3400 6 XS power d680 Second Skin Stinger Tsunami Wiring Sky High A Real Voltmeter not a piece of shit stinger. Link to comment Share on other sites More sharing options...
AA98hoe Posted July 24, 2012 Report Share Posted July 24, 2012 What are you wired to? 2ohms? That's why ...drop that bish to .5 and watch power ,spl, and voltage drop increase.... dd amps make most power at or under 1ohm Quote 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...
OrionStang Posted July 24, 2012 Author Report Share Posted July 24, 2012 yeah maybe the impedance rise its high as hell, my 140A alternator and 2 HC1800 electrical a couple of years ago was holding the voltage like a boss, of course, i wan´t as loud as i thought i could be, changed the box and i got 2 louder, and of course, voltage dropped 2 times lower lol remember its tough to beat science. if you have 400 amps of current draw at 1 ohm and can only recharge 270 you are going to have a voltage drop unless you are getting stupid rise. im not an electrical engineer nor will i claim to be but there are solid formulas used to determine this. Exactly why i'm assuming big time rise guys. I guess its all irrelevant, as i'm changing the box again anyway. Done chasing numbers in this car. Quote SMD Super Seller My Feedback Thread Link to comment Share on other sites More sharing options...
speeddemon0308 Posted July 24, 2012 Report Share Posted July 24, 2012 more then likely have a tonne of rise going on. drop to .5 and watch your voltage when you first get into it. Quote Link to comment Share on other sites More sharing options...
ch0sen Posted July 24, 2012 Report Share Posted July 24, 2012 No, you see the change in resistance through the coils. You can see what I'm talking about if you've got a speaker laying around.... Hook up positive and negative leads to the speaker terminals, push down on the cone and watch the ohms rise. i didn't know it worked liked that, thanks man Quote My current 95 Jetta Build w/ pioneer h/u 2 RD Sonance 10's with flatwind coils 2 Audiopipe apsm 1500.1s 1 Hifonics Brutus Elite 60x4 1 XS d925 1 Stinger spv35 1 1000 amp lead acid 50 ft of 0/1 ofc from Audiotechnix all powerbass components, and coaxils, 4 sets buildlog = http://www.stevemead...2-rd-10s-build/ My build for my wife. http://www.stevemead...01-f-150-build/ Link to comment Share on other sites More sharing options...
OrionStang Posted July 24, 2012 Author Report Share Posted July 24, 2012 What are you wired to? 2ohms? That's why ...drop that bish to .5 and watch power ,spl, and voltage drop increase.... dd amps make most power at or under 1ohm Single d2, wired to one ohm. Adding a second sub and considering .5, also got an SAZ3500 on the way, sold the M3a and Mayhem. Quote SMD Super Seller My Feedback Thread Link to comment Share on other sites More sharing options...
Bump4life Posted July 24, 2012 Report Share Posted July 24, 2012 i will let you guys know how wiring the M3a @.5 ohms goes since i will be doing it with kens old M3a!! just bought it Quote Buyer/Seller Feedback Thread: http://www.stevemead...5015-bump4life/ MB C220 153 Trunk Car Build Log: http://www.stevemead...d/#entry1840136 MB C280 Ipad Dash SQ Build Log: http://www.stevemeadedesigns.com/board/topic/194484-bump4lifes-new-benz-tony-c-relay-kit-pictures-ce-electric-audison-front-stage-installed/ My SPL Log: http://www.stevemead...__fromsearch__1 BMW M340 xDrive Stock, for now. Corner Load 10" maybe soon. But does 10s in the 1/4... Best Scores out of a trunk 153.0 sealed legal full tilt clamped 5524 @ 42 hz 154+ windows down, 155+ kick Link to comment Share on other sites More sharing options...
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