Extra battery or Replace Battery (need help)

[Eagle]

sometimes... there are 0 -> 4 ga adapters.
however generally they are too big to fit one next to the other, so you'd need to keep a 4 ga ground (not a real problem since ground is probably only 12-18 inches.)

you might try upgrading the alternator to battery to 4ga first... can't hurt, and it would sure cost less.
if your plans involve adding another amp, then a 1/0 gauge kit is a good investment.

 

[ROBERTOcritser]

I actually got a piece of 8ga wire to add on top of the wire for the alternator to battery... would that be ok or should I just go straight to 4ga?

about the 1/0 kit, thats all I needed to hear... I might buy one this week.

 

[fatnlowtahoe504]

yea thos 1000.1s pull alot of juice, i had one at first with just the factory battery it dimmed like a mother, but i added a yellow top and capacitor and it solved the problem, now im running a kicker 1500.1 and it doesnt make it dim nearly as much as the JL

 

[ROBERTOcritser]

I just checked my sub with a meter and from what I can tell, Im fairly certain its at 1.5 ohms. the meter I was using wasnt a big yellow one like most people have and isnt extremely precise but it only flickered between 1 and 2 ohms so I would guess its at 1.5

 

[Eagle]

I figured it was a DVC 3 ohm parallel.

Add that 8 ga. to the alternator & see how it goes. 8ga + OEM wiring should be more than ample.

 

[ROBERTOcritser]

the JL site says its Nominal Impedance is 3 ohm. Here is a chart copied from there site.

Free Air Resonance (Fs): 27.2 Hz
Electrical “Q” (Qes): 0.514
Mechanical “Q” (Qms): 7.807
Total Speaker “Q” (Qts): 0.482
Equivalent Compliance (Vas): 2.33 cu. ft. / 66.0 liters
One-Way, Linear Excursion (Xmax)*: 1.15 in. / 29 mm
Reference Efficiency (no): 0.249%
Efficiency (1W/1m)**: 86.2 dB SPL
Effective Piston Area (Sd): 84 sq. in. / 0.0542 sq. m.
DC Resistance (Re): 2.47 ohm
Nominal Impedance (Znom): 3 ohm
Thermal Power Handling (Pt): 1000W
Driver Displacement: 0.14 cu. ft. / 4.0 liters
Net Weight: 45 lbs. / 20.4 kg

 

[Eagle]

and 3+3 = 1.5 (nom).

 

[ROBERTOcritser]

ok. well I just put that 8awg wire between my alt. and battery and Ive noticed pretty good difference in how much less voltage drop Im getting.Right now I have

1.extra 8awg between alt and battery (small red box)
2.a 4awg wire ran from my battery ground to a random body ground nearby
3.and my amp's 4awg wired straight to the red box

number 2 might sound a little off but Im pretty sure it helped even if only a lil bit.

with all of this, Ive noticed a not huge but a very good difference compared to how it was before any of that extra wiring. Definitely dont feel like I need a big battery like the one they wanted to sell me. but Im not sure what to do yet b/c I still gotta put the other amp in there with my high's and see how much that draws from everything.

 

[Eagle]

luckily, 'highs' jsut dont require the same brute amount of power.

 

[ROBERTOcritser]

yea but what would you think if I added a JL 300/2?