running sub for long time

[jackhjharding]

I'm looking to run my sub from my car for a few hours at a friends house soon, but am aware that doing this will cause the battery to run out unless I start the car. What are the best options for running a sub continuously without running the cars battery down? Many thanks

 

[Laura]

leave your car running

 

[Black-Clio-1.4]

^ Agree.

Get a decent Battery.

Connect one to several triccle chargers?

 

[mattjk]

yep leave the car running or get a separate 12v source

 

[jackhjharding]

would this use a lot of petrol? Any ideas of roughly how much?

 

[Eryl182]

would this use a lot of petrol? Any ideas of roughly how much?

YEah loads!

 

[Jamie]

dont do it

 

[KM CLIO]

aint you got a hifi or a dvd player you can play it through?

 

[MT AUDIO]

just get your mate to jump start it once your done

 

[Brown.]

just wait till your old enough to drink in pubs

 

[VeinAST]

just wait till your old enough to drink in pubs

FLOL

 

[AlexG]

just take a booster pack with you for when you want to leave

 

[wallop]

Have you got battery specs??

what exactly will you be running??

what will you be playing??

how loud will it be playing??

Off one yellowtop I can run mine at lowish volume, (loud enough for listening whilst hanging about car parks etc etc), playing music for around 2hrs....Then I need to run the car for about 1hr to top the battery back up, (but I have the alt & starter battery both charging mine)....

 

[jackhjharding]

anyone know where i could get a seperate 12v source from? and how would i connect this to play the music?

 

[wallop]

Without knowing what your actually running how can I suggest a possible power source???

Simply check all your items for onboard fusing, as an example;

head unit = 10amps
mono amp = 100amps
4ch amp = 60amps

Total max draw 170amps

playing 0dB test tones at full tilt = 170amps, (55ah batt = not long lol).
playing music at full tilt = approx 85amps, (55ah batt = 40mins ish).
playing music at half head unit volume = 20amps approx, (55ah batt = 2hrs or so).

I've ran a home setup for a few months using a battery & permanently connected battery charger, I know of a few other people who have also done it....

If running a small system you may get away with a large 12v reg comp power supply, but I wouldn't recommend it.....

Anyhow, all this means nothing until you actually confirm what you need to power.....

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