Amp installation - Page 2

tarkoon · 04-11-2008, 04:16 AM

Hello mate

I have use 70 amps battery and work well with 2 poweramps (40w x 2 and 300w x 1)
I think if you sum total amps of your poweramp and it is equal or less than battery then it should be sufficient. Or you can use 12 x your battery capacity if you use half of it then it should be sufficient either.

Dogo · 04-11-2008, 10:05 AM

You're never going to put out the max amperes from your amps.

reshiek · 04-11-2008, 04:50 PM

dogo, what do you recommend? because i do want my car to have a flat battery because of my amps.
any suggestions of how to find maybe?

70NYD · 06-11-2008, 09:01 PM

Quote:

Originally Posted by reshiek

Hey guys,
need advice on amp installation/slash battery.
i have a amp running a sub.the amp is at most i think 200-300. the sub is 300 at max peak. the amp im going to put on is a 400 rms.
anyways i am not sure battery will support it, any recommendations please???
thanks in advance

400wrms should be fine cus for a 12V system thas only drawing around 30Amps so you shouldnt worry there. my amp draws nearly 60Amps sometimes and it runs fine of the battery, never had a problem, apart from when i got the car the battery in it was the original one i thing from factory so it died a month after i got the car. but new batery is a super cheap one and it handles it fine you dont have to worry

if you decide later on to get more subs and perhaps a second amp get a capacitor with it as well.

hope this helps
Tony

DavoAust · 06-11-2008, 09:12 PM

i'm running a 4ch amp and a 2ch amp + dvd player and screen off the battery and it doesn't die. original one too!

70NYD · 06-11-2008, 10:20 PM

ye i herd that these batteries are good, but i dunno what happend to myn. funny though i left it at garbo, finished uni went to the car, unlocked it sat inside turned the key and nothing.... let go of the key the doors locked and unlocked and the alarm went of... i repeated that several times. then i called RACQ n got a jump drove straight to supercheap n got a battery..
but yea long story short as Dave said no worries it will handle it

reshiek · 07-11-2008, 11:37 AM

oh sweet thanks guys.
where did you purchase it?
and so a normal battery for a BA astina would be ok?
from what i gathered in the previous posts?

Rupewrecht · 07-11-2008, 11:45 AM

Yeah, a normal battery will do. Always good to get one with a high CCA (cold cranking amps) rating

reshiek · 20-01-2009, 12:32 AM

thanks for the rupe.
asking the"gurus" some advice on amp cables....which one good.
i have a fusion amp cables but are boston any good?or rockford[expensive for me].by the way this is for the 2nd amp

Dogo · 20-01-2009, 09:34 AM

You mean the power cables or RCAs ?

Power wires are all the same.
Some just have a different logo printed on the insulation and a laughable price tag to go with it.
There are some brands with better flexibility etc ( Audison etc ) but for the average ( and even most beyond average ) car audio systems, the plain car audio power wire from dick smith or jaycar is great.

You can calculate the required thickness or use this rough guide : 4gauage if you have a bit of power or have more than one amp, and thinner 8 guage if you've just got a weaker amp.

Spend more time making sure you have a good ground point than shopping for cables. The ground can is considered one of the most important aspects of installing a system. You'll need to bolt the amp's negative wire to a solid part of the chassis and sand back the paint to expose the metal.

For RCAs, I usually use stinger.

04-11-2008, 10:05 AM	#22
Dogo Senior Member Join Date: Mar 2002 Location: Melb, Aus Car: Mazda 323 BA BPT transplant Posts: 3,459 View Photos By: Dogo	You're never going to put out the max amperes from your amps. __________________ [ Turbo BA ] see my readers ride

06-11-2008, 09:12 PM	#25
DavoAust Senior Member Join Date: Mar 2007 Location: Brisbane Car: Red '93 3000GT / Black '08 Ninja 250R Posts: 2,930 View Photos By: DavoAust	i'm running a 4ch amp and a 2ch amp + dvd player and screen off the battery and it doesn't die. original one too! __________________ Understeer is when you hit the wall with the front of the car and oversteer is when you hit the wall with the rear of the car. Horsepower is how fast you hit the wall, torque is how far you take the wall with you. '97 1.8L Hardtop '93 3.0L TT 3000GT

06-11-2008, 10:20 PM	#26
70NYD Veni, vidi, vici Join Date: Mar 2008 Location: Brisbane Car: 1996 BA Hatch & 2005 RX8 Posts: 4,911 View Photos By: 70NYD	ye i herd that these batteries are good, but i dunno what happend to myn. funny though i left it at garbo, finished uni went to the car, unlocked it sat inside turned the key and nothing.... let go of the key the doors locked and unlocked and the alarm went of... i repeated that several times. then i called RACQ n got a jump drove straight to supercheap n got a battery.. but yea long story short as Dave said no worries it will handle it __________________

07-11-2008, 11:45 AM	#28
Rupewrecht Administrator Join Date: Mar 2002 Location: melb.vic.au Car: AZ-1, Astina Hardtop Turbo, BJ Protege, Beetle Posts: 16,525 View Photos By: Rupewrecht	Yeah, a normal battery will do. Always good to get one with a high CCA (cold cranking amps) rating __________________ jdmparts.rupewrecht.com Sourcing your not-quite-overnight parts from Japan WRECHT--\|--SLOWTEGE--\|--BEETLE--\|--SUBSTITUTE--\|--AZ-1

20-01-2009, 09:34 AM	#30
Dogo Senior Member Join Date: Mar 2002 Location: Melb, Aus Car: Mazda 323 BA BPT transplant Posts: 3,459 View Photos By: Dogo	You mean the power cables or RCAs ? Power wires are all the same. Some just have a different logo printed on the insulation and a laughable price tag to go with it. There are some brands with better flexibility etc ( Audison etc ) but for the average ( and even most beyond average ) car audio systems, the plain car audio power wire from dick smith or jaycar is great. You can calculate the required thickness or use this rough guide : 4gauage if you have a bit of power or have more than one amp, and thinner 8 guage if you've just got a weaker amp. Spend more time making sure you have a good ground point than shopping for cables. The ground can is considered one of the most important aspects of installing a system. You'll need to bolt the amp's negative wire to a solid part of the chassis and sand back the paint to expose the metal. For RCAs, I usually use stinger. __________________ [ Turbo BA ] see my readers ride Last edited by Dogo; 20-01-2009 at 09:36 AM.

04-11-2008, 04:16 AM	#21
tarkoon Junior Member Join Date: Sep 2008 Location: Bangkok Car: mazda lantis Posts: 10	Hello mate I have use 70 amps battery and work well with 2 poweramps (40w x 2 and 300w x 1) I think if you sum total amps of your poweramp and it is equal or less than battery then it should be sufficient. Or you can use 12 x your battery capacity if you use half of it then it should be sufficient either.

04-11-2008, 04:50 PM	#23
reshiek Junior Member Join Date: Oct 2008 Location: inner west Car: BA astin Posts: 37	dogo, what do you recommend? because i do want my car to have a flat battery because of my amps. any suggestions of how to find maybe?

07-11-2008, 11:37 AM	#27
reshiek Junior Member Join Date: Oct 2008 Location: inner west Car: BA astin Posts: 37	oh sweet thanks guys. where did you purchase it? and so a normal battery for a BA astina would be ok? from what i gathered in the previous posts?

20-01-2009, 12:32 AM	#29
reshiek Junior Member Join Date: Oct 2008 Location: inner west Car: BA astin Posts: 37	thanks for the rupe. asking the"gurus" some advice on amp cables....which one good. i have a fusion amp cables but are boston any good?or rockford[expensive for me].by the way this is for the 2nd amp