JesseyMclame Posted February 2, 2014 Report Share Posted February 2, 2014 Okay, so I have a mechman "260" amp alt, 850 cca agm batt up front, big 3 done, and 2 92 ah cell tower back up batterys in back. Would it be more beneficial for me to add a 2nd run of positive from alt to rear batts, or do a run of negative from the negative of front batt to rear batt negative ? Oh sub amp is dc 2k and I only drop to like 12.5-12.6 at idle wangin away at full tilt on a dc lvl5 18. Current setup in my 96 Hoe Hu - Pioneer DEH-80prs. Amps - (4) Crossfire C5 1700D's, MTX Thunder 5604(mids), PPI Art 300.2 (tweets) Batts - 4 91ah rear batts, 50ah batt up front. Subs - 2 Crossfire XSv2 18's Alt - Singer 330A Front stage - Random JL & Eclipse mids, Eclipse tweets Link to comment Share on other sites More sharing options...
Karkov Posted February 2, 2014 Report Share Posted February 2, 2014 Don't even do the negative run. Prolly don't even need to do the positive run either but it wouldn't hurt anything (especially if you upgrade your RMS wattage later one). That is really not that bad of voltage drop. What is it like at 2k RPM? Do you play at idle a lot? What is your voltage like on vehicle start up? How about when hot with no stereo on? 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...
Bship Posted February 2, 2014 Report Share Posted February 2, 2014 I'd add a second pos and double up the neg to where you have it now. You might not need it but It definitely couldn't hurt. I agree you don't need to run a neg from the front though. CARS 14 Sierra crew cab daily, Small build coming one of these days 69 C-10 fleetside in many pieces, won't be done till the end of time Last car '12 Focus with build log http://www.stevemeadedesigns.com/board/topic/165619-2012-focus-btl-15-crescendo-sundown-audio-control/ Link to comment Share on other sites More sharing options...
C'sgetdegrees Posted February 2, 2014 Report Share Posted February 2, 2014 Also what kind of batts do you have? Could maybe have something to do with it. Better quality batts yes exspensive but also may save you in the long run. 05 Escape 2 Ascendant Audiio Mayhem 15s dual 1 Populus Audio 6500 (the only one around ) 1/0 SHCA OFC XS 3400 under the Hood XS 3100s in the rear X2 Pioneer 80 Prs Pac Prv mids and highs 2 8s per door 1 tweet Link to comment Share on other sites More sharing options...
JesseyMclame Posted February 2, 2014 Author Report Share Posted February 2, 2014 Don't even do the negative run. Prolly don't even need to do the positive run either but it wouldn't hurt anything (especially if you upgrade your RMS wattage later one). That is really not that bad of voltage drop. What is it like at 2k RPM? Do you play at idle a lot? What is your voltage like on vehicle start up? How about when hot with no stereo on? It really seems no different at 2k rpm, voltage just drops slower. And no, not usually. Voltage is usually 14.2-14.3 on start up. Sometimes even 14.7 before it warms up lol. And hot is usually 13.7 - 13.8 Current setup in my 96 Hoe Hu - Pioneer DEH-80prs. Amps - (4) Crossfire C5 1700D's, MTX Thunder 5604(mids), PPI Art 300.2 (tweets) Batts - 4 91ah rear batts, 50ah batt up front. Subs - 2 Crossfire XSv2 18's Alt - Singer 330A Front stage - Random JL & Eclipse mids, Eclipse tweets Link to comment Share on other sites More sharing options...
hdorre Posted February 2, 2014 Report Share Posted February 2, 2014 Wait, you drop like 2 volts?!? Read my sig, I'm running over 4k on a 30a smaller alt and 34aH less in battery reserve. At IDLE, I drop to 12.9 at a min from 14.6ish volts full tilt after a full song. Of course impedance rise plays a role, but that big of a role? Ehh.. What are your subs wired to, impedance wise? Check that voltage with a DMM. What are your current grounds like? I'm concerned. On 5/8/2011 at 7:38 PM, Kranny said: On 5/8/2011 at 7:35 PM, 'Maxim' said: It hurts me inside when I read stuff like this and remember you're 15 LMFAO so true Mitsubishi 3000GT (Old Build) Headunit: Pioneer 80PRS Frontstage: (2) McLaren Audio MLT-2 Tweeters & (4) PRV Audio MR Series Neo 6.5" Mids Substage: 4 15" Hybrid Subs - Tantric Motors & Sundown Softies Amps: Banda 2.4D Amp (Tweets), American Bass VFL 350.4 (Mids), and (2) Ampere 3800s Electrical :Singer 260A Alt & JY Power Lithium 2005 Chevy Colorado Ext Cab Headunit: Pioneer 80PRS Frontstage: 4 PRV 700Ti Tweets & 6 10" Delta Mids on 3000wrms Substage: 6 Fi BTL 18s in a 4th Order Walkthrough on 3 Wolfram 4500s Electrical: Singer "390" and JY Power My Official Feedback Thread Link to comment Share on other sites More sharing options...
Kyblack76 Posted February 2, 2014 Report Share Posted February 2, 2014 Wait, you drop like 2 volts?!? Read my sig, I'm running over 4k on a 30a smaller alt and 34aH less in battery reserve. At IDLE, I drop to 12.9 at a min from 14.6ish volts full tilt after a full song. Of course impedance rise plays a role, but that big of a role? Ehh.. What are your subs wired to, impedance wise? Check that voltage with a DMM. What are your current grounds like? I'm concerned. I agree. Seeing battery rest, with that bank, with a 2k, and a damn decent alt, you have a problem.... Do you run at .25 or something? SMD SUPER SELLER The Burban Build Blazer Build sold Acura trunk build sold Link to comment Share on other sites More sharing options...
DubNDodge Posted February 2, 2014 Report Share Posted February 2, 2014 you have more drop then me when I have stock alt,d925,D3100 on a 2200. even when I'm at idle. '01 Dodge Stratass Sealed Trunk Build Log 2008 Honda Fit Sport Build Log On 10/3/2013 at 10:00 AM, ROLEXrifleman said: Anyone who says they knew everything they wanted out of life at 19 can go suck a bag of dicks cause they are lying to themselves or brought up in a cult. Link to comment Share on other sites More sharing options...
n8ball2013 Posted February 2, 2014 Report Share Posted February 2, 2014 You don't need a second run since you don't have enough alt to make use of it really. I'd check my batteries and look at another one 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...
JesseyMclame Posted February 2, 2014 Author Report Share Posted February 2, 2014 Yeah I guess it could be the reserve. Or the alt. Idk. I got paperwork with the alt when i bought it secondhand, and it has a new voltage regulator. I've got two of these guys. http://www.osibatteries.com/p-1055-enersys-powersafe-sbs-c11-sealed-lead-acid-battery-120v-910ah.aspx They charge and rest like my front batt so they should be fine right ? I'm running the 18 at 1 ohm before box rise, deck is an 80prs, gains set by dd1. Current setup in my 96 Hoe Hu - Pioneer DEH-80prs. Amps - (4) Crossfire C5 1700D's, MTX Thunder 5604(mids), PPI Art 300.2 (tweets) Batts - 4 91ah rear batts, 50ah batt up front. Subs - 2 Crossfire XSv2 18's Alt - Singer 330A Front stage - Random JL & Eclipse mids, Eclipse tweets Link to comment Share on other sites More sharing options...
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