pat656

120 amp i think, at least thats what it says on bavauto.com

so i didnt know where to put this, but feel free to move it i am doing an overhall on my car and setting up a friends so i figured i would do it right the first time i have installed a few systems, but never but a second battery in a car so im putting the same system in my car and a friends which consists of a 3000W fusion amp, FI BL12 fully loaded subs (dual 2 ohm) and an extra battery the cars are an 03 525i and 2008 Wrangler so i figured 1/0 wire to connect the new battery and 4 gauge from the battery to amp do i need a fuse between the car battery and audio battery and audio to amp or just on the power wire to the amp, and how big of a fuse (the amp has 4x40amp fuses) and then i was thinking 12 gauge from the amp to sub also do i need a battery isolator and if so which one so this is the plan: 12 ga from amp to sub 4 gauge with fuse from 1400W battery with some type of isolator 1/0 ga from car battery to audio battery sound good? Patrick

thats how i blew my alt i had the air radio subs windshield wipers on full and all lights on and it died its brand new battery and alt everything is grounded correctly and i even did a battery ground on the batt to chassis wire the battery is really big but i dont know the size without taking it out Patrick

ok so i have heard that i need to do the big three and not get a cap i have a few questions regarding this though i have a bmw and the battery is in the trunk, so do i still need to run the alt to batt wire with fuse? i mean stock is a 4 gauge and since stock is 4 gauge everywhere will the big three help at all? or do i just need to buy a new battery my car dims a lot with a small 300w system and i have a new battery and alternator everything is grounded correctly and i run 4 gauge and 16 for the subs Patrick

so what about the kinetiks?

ok cool so what size fuse do i need

A Kinetik HC1400 or 1800, anything battery with around 80AH. just curious, how did you figure out which one i needed, what calculation or specs did you look at

Sorry I didn't specify...my original question didn't need it ok so I'm gonna have a fusion 3000w amp and an fi bl12 dual 2 ohm sub I have stock hu and no other amps besides the stock one

yea i realized that part # was for the 16v what size do i need though

so like the hc16v? Are you running a 16 volt system with that battery? Kinetiks are great but what is your budget for another battery? Deka 9A31 is a great batt at a good price. I think the batt would be ok next to the box. Its not the box vibrating anyway. The driver makes everything else around the box vibrate. no standard 12 volt ( i guess....14 with alt.) i just need a second battery b/c everything dims, even my headlights

actually i dont think you all understand what im saying i dont know anybody with a n fi sub, i just heard how good they are i know a lot of people with stuff like sony and bad alpine, so yes i do want it to sound better, and probably anything will i spent a lot of money making my 15" box thats why i want to keep it i dont think i know everything, i actually know i dont know everything and i have found that out with other projects ive had thats why i came here asking which 15" sub i should get

i know how to use it, i have setup many for friends and i have had my rockfords for over 2 years without problems (i started driving at 15 b/c of SC law) thats why i want an fi sub and not another fusion

ok i dont care if everyone thinks my box is too small or how i blew my last one i just want to know which FI sub to buy, well actually what options on the BL should i get

I think you need to learn how to set your amps settings before getting purchasing another subwoofer just to damage it. What do you mean you want a new sub you can recone (thats ridiculous, just a waste of money). Save this somewhere on your computer for future reference so you dont keep pucking up equipment: Head Unit Settings Bass Boost/Exend = Off Loud/Loundness = Off Sub Level: + whatever yours goes up to minus a few whatever your preference Bass = 0 or lower, whatever your preference Amp Settings Gain = Set with DMM (with a 50Hz test tone and at subs rms or amps rms whichever is lower), no more than 50-60% if you dont have one. LPF = 100Hz or lower whatever your preference Bass Boost = Off SSF = 1-5 Hz lower than box tuning, or until subs start to reach its excursion level. all the amp settings were fine, i know how to set that, i just accidentally wired it as a 1 ohm instead of 2 i cant set my hu bc its a stock one and i dont want to replace it (i will look really bad in a bmw) i had those settings on my amp though, i actually made sure it wasnt all the way up bc i didnt want to blow it, ironic i know

ported but the only thing that fits in my car, i built it to exact dimensions of my car Then you shouldn't be running a 15". A single 12" in the proper box would out perform a 15" in a chocked box. i got a really good deal on the 15, actually less than the 12 so i got it, i know a bunch of people at my school with them and they sounded really really good so i got one

ported but the only thing that fits in my car, i built it to exact dimensions of my car

thata the whole thing i dont want to blow it, i wasted a lot of money bc the guy told me the wrong way to wire it i want to recone so i wont have to buy a new speaker my car vibrates with a 300W 12" system, i get use to it, i have put $100+ of wholesale priced dynamat in it i dont want the btl but prob the bl just with what options the box is 20x20x14, about 3.1 cuft is what the guy said who gave me the design Patrick

i live close to augusta GA i have an 03 bmw 5 series and a small rockford system, soon to replace with a 15" ~1500W system, already have box and amp, just no sub b/c i already blew mine here my ride, and btw in 17!! Patrick bimmerguy

so like the hc16v?

so i have no idea where to put this on the boards but i have a question about a second battery i have a 2003 bmw 525i sedan and have found out i need a second battery before i blow another alternator is it ok to put it near the sub box or will the vibration be bad for it? i was thinking an optima yellow top battery any suggestions? Thanks Patrick

I blew my Fusion Powerplant 15" and now have a box and amp just sitting in my garage i want a new sub i can re-cone so which FI sub do i need, i have this amp: http://www.fusioncaraudio.com/north-and-south-america/car-audio-1/amplifiers-7/ppam300010-50-product.aspx 1300W at 2 ohm and 1500W at 1 ohm so which one does everyone recommend Thanks Patrick