Do i need more power?

Hello, i am very new to this so i beg you please have patience. I am about to run a sytem of the following :-

2x Fusion Powerplant speakers

2x Fusion Components

1 Fusion Amp and 1 Fusion Sub

I want to run the sub off the amp and the other speakers off the head unit till i can afford to get another amp for them. I have already uprated the battery, but need to know wether it will be sufficient to power the whole system, or will i need to run a seperate battery for it? I am currently driving a reliant robin 1992!

Apologies, I realise that you will need much more info so here are the specs:-

2x Fusion EN-CM65 240 WATTS COMPONENT SPEAKERS

2X Fusion EN-CM65 Tweeters

2x Fusion EN-CM65 X-OVERS

2X Fusion PP-FR693 Powerplant 6x9'' 3 Way Speakers

1x Fusion fe-402 Amplifier

1x Fusion 600 Watt Encounter Subwoofer

1x Pioneer DEH-P6800MP 50 Watt x 4 MAX OUTPUT or 50 Watt x2/ 4 ohmms +70 Watt x 1/2 ohmms (for subwoofer)

I think that is it, any advice would be much appreciated as to how i should wire it/ what wire/ additional power source.

Thanks in advance

Have just found out that my 1992 Reliant Robin has a 55 amp alternator. So will i need to go higher with the system spec i have?

I would upgrade the "big 3" before shelling out the money for an alternator.

From what i can workout with all the electrical items switched on in the car it would use 35 amps. And as my alternator is 55 amps even with just the head unit 200 watt and amp and sub 400 watt running, will that be too much for the battery to cope with straight off? I know it has killed my battery twice now so any advice you could give would be helpful. cheers

In the Uk by the way

Got the specs for the amp i have, thought maybe i could get another one of these or maybe use this for the components and another for the sub?

Fusion F-402 Specs:
Price & Contact: MSRP $159 USD; www.fusioncaraudio.com
Rated Power @ 12.5 VDC, 0.05% THD: 40 Watts x 2 into 4 ohms; 50 Watts x 2 into 2 ohms; 100 watts x 1 into 4 ohms
Rated Power @ 14.4 VDC, 0.05% THD: 50 Watts x 2 into 4 ohms; 70 Watts x 2 into 2 ohms; 140 watts x 1 into 4 ohms
Measured Power @ 12.6 Volts, less than 1% THD:
52.6 Watts x 2 into 4 ohms; 89.1 Watts x 2 into 2 ohms; 178.2 watts x 1 into 4 ohms
Measured Power @ 14.4 Volts, less than 1% THD:
61.6 Watts x 2 into 4 ohms; 113.3 Watts x 2 into 2 ohms; 226.6 watts x 1 into 4 ohms
Current Draw @ Max Power (14.4):
13.7 amps @ 4 ohms stereo; 24.3 amps @ 2 ohms stereo and 4 ohms bridged
Efficiency @ Max Power (14.4):
4 Ohms Stereo: 62.5% @ 4 ohms stereo; 64.7% @ 2 ohms stereo and 4 ohms bridged
Efficiency at 1/3 rated power:
4 Ohms Stereo: 30.4% @ 4 ohms stereo; 27.9% @ 2 ohms stereo and 4 ohms bridged
Amplifier Weight:
6.5 Pounds (2.95kg)
Amplifier Dimensions:
10.25 inches x 10.625 inches x 2.25 inches (260 mm x 220 mm x 57.5 mm)
High-pass Crossover:
Continuously variable 18 dB-per-octave from 40 Hz-6000 Hz
Low-pass Crossover:
Continuously variable 18 dB-per-octave from 40 Hz-160 Hz
Bass Boost 0 to +18 dB @ 45 Hz
Variable Subsonic Filter:
Continuously variable from 20 Hz to 55 Hz @ 18 dB-per-octave
Input sensitivity: 300 mV to 8 V
Frequency response: 20 Hz to 55 kHz

alright from what i am getting that one of your amps pushes 178 watts and the other pushes 70 watts right? you should get a better amp for your subwoofer, while underpowering a subwoofer is fine if you dont push your amp, but it wont be as loud as say a 500-600 watt amp to fully power the subwoofer.

did it kill your battery while it was running??? i wouldnt think so but ya never know lol.

The only amp i have is the fusion fe-402 which is powering the sub, the other 4 speakers are running off the head unit which is pushing out 200 watt total.

And the Reliant Robin is made completely out of fibreglass so the acoustics are amazing, the only good thing about the car.