adding 4 channel amp - Audio & Electronics Forum

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adding 4 channel amp
Monday, June 26, 2006 3:58 PM
ok i've searched but no luck...i already have a mono amp pushing my subs. i want to add a 4 channel amp to run my front and rear speakers... what exactly do i need to do to power this second amp?? i think i'll need a power distribution block... but i don't really know how to go about hooking it up can some one please help me???

Re: adding 4 channel amp
Monday, June 26, 2006 4:24 PM
I am not sure if it is the best way but I used power distro block and a jumper from the Mono I already had ran for the remote wire and used a smaller inline fuse between the distro block and the 4 channel (didn't know if the 300 amp would give before the amp so better safe than sorry)

I could get you pics later but it's raining now and maybe someone else has some better ones.

If it would really help I will get some



Re: adding 4 channel amp
Monday, June 26, 2006 5:35 PM
Get a power distro block. we really need to know the wattage of the amps to tell you how big of wiring and fuses you need. just make sure that each wire has it's own fuse.
or you could just run a new power line from your battery if you really wanted.



Re: adding 4 channel amp
Monday, June 26, 2006 10:07 PM
schembo2000 wrote: we really need to know the wattage of the amps to tell you how big of wiring and fuses you need.

the mono amp is running at 919 watts RMS... the 4 channel amp is 60 watts RMS x 4... so i should run a power wire from battery to distribution block then from the block one power wire to each amp??? is that right??
Re: adding 4 channel amp
Tuesday, June 27, 2006 12:38 AM
K, if you have big enough wire from ur battery already, all u really need is a relay, some wire, some fuses and a fused distribution block.
You will take the wire from ur battery and run it to the fused distribution block but do keep in mind that you are probably gonna have to change the inline fuse on that to a bigger one.
Then go into the fused distribution block and use the correct size fuses for the amp and take the wire out of that to each of the amps.
The relay is for your remote turn on. You can probably just branch of the existing one (depending on how many amps are drawn by the remote turn on for each amp) but it's safer to use a relay. Just rig it up and ur good to go.

Ask if u need more help.

-Seth



Re: adding 4 channel amp
Tuesday, June 27, 2006 8:22 AM
thanks for all of yalls help...right now i have 8 guage wire goin from batt to amp should i upgrade to a bigger wire or will it be ok???
Re: adding 4 channel amp
Tuesday, June 27, 2006 10:05 AM
also what size fuses do you reccomend
Re: adding 4 channel amp
Tuesday, June 27, 2006 10:10 AM
you should have at least 4 gauge wire to the distro block and a 125 amp fuse at the front of the car. from the distro bock to the amps, you can use 8 gauge to each amp. the fuses there should be 60 amps, i believe ( may not be correct.)
I would use 4 gauge ground for each of the amps.



Re: adding 4 channel amp
Tuesday, June 27, 2006 11:23 AM
schembo2000 wrote:you should have at least 4 gauge wire to the distro block and a 125 amp fuse at the front of the car. from the distro bock to the amps, you can use 8 gauge to each amp. the fuses there should be 60 amps, i believe ( may not be correct.)
I would use 4 gauge ground for each of the amps.
Thats what I thought too and I looked on crutchfield and that mono amp needs 4 gauge. Soooo...
4 gauge to the distro block
8 guage to the 4 channel amp and 4 gauge to the mono and from there and you'll be ok with 8 guage grounds on the 4 channel and 4 gauge on the mono, just make sure they are good grounds.
I came up with about a 110 amp fuse for the inline, about 80 for the mono on the distro, and 25 for the 4 channel on the distro.

Now I'm not totally sure if I did it right for the fuses but i used...
950 / 12 = 79.166
300 / 12 = 25
and added, you get 105

If i didn't do those right, let me know.

-Seth



Re: adding 4 channel amp
Tuesday, June 27, 2006 11:48 AM
it's probablly a better idea to run 4 gauge for just the mono amp, but it's hard to tell how much current is being drawn by that amp without the brand/model.

cavalier pusher could just run another 8 gauge wire for just the 4 channel amp, but honestly, i think 4 gauge will be ok for everything.

as far as fuses go, i think it's better to use a fuse that will support the max current of the wire you're using. 4 gauge can support up to 125amps safely, which is why i suggested a 125 amp fuse. I just looked up the max current for an 8 gauge wire and it is 50 amps, so you should have a 125 amp fuse at the head of the car, and 2 50 amp fuses in the distro block for each 8 guage wire.



Re: adding 4 channel amp
Tuesday, June 27, 2006 12:28 PM
schembo2000 wrote:it's probablly a better idea to run 4 gauge for just the mono amp, but it's hard to tell how much current is being drawn by that amp without the brand/model.

cavalier pusher could just run another 8 gauge wire for just the 4 channel amp, but honestly, i think 4 gauge will be ok for everything.

as far as fuses go, i think it's better to use a fuse that will support the max current of the wire you're using. 4 gauge can support up to 125amps safely, which is why i suggested a 125 amp fuse. I just looked up the max current for an 8 gauge wire and it is 50 amps, so you should have a 125 amp fuse at the head of the car, and 2 50 amp fuses in the distro block for each 8 guage wire.

The models and specs where told up above.
And ya, the 4 gauge is gonna handle the power fine, but just go 4 to the distro, 4 from the distro to the mono, and 8 from the distro to the 4 channel.

I do fuses based on the power of the amps, not what the wire can handle. You could run 1/0 to a 300 watt amp and put a 250 amp fuse on there because 1/0 will hold it, but it doesn't need to be anywhere near that much.

-Seth




Re: adding 4 channel amp
Tuesday, June 27, 2006 8:14 PM
Sorry, you're right, i didn't notice the links at first (or maybe i was too lazy to click...). Anyway, according to the links from cavy pusher the following is true about the fuses on the amps:

mono - 75 amp
4 channel - 40 amp

so this means that you are correct seth when you said that 4 gauge is required for the mono amp since 8 gauge can only safely handle 50 amps.
you are also correct about needing 4 gauge to the distro block, 4 guage to the mono amp and 8 to the 4 channel. I found this cool product that will be exactly what you need! www.knukonceptz.com

it allows you to select the size of input and output wires!
anyway, you need to pick fuses with that. there are basically 2 methods to pick a fuse:
1.) my way
2.) seth's way

either way will work fine for you. here is what you need depending on which method you choose:

1.)
  • 2- 125 amp fuses. 1 near the battery on your main 4 gauge power line. 1 in the distro block that goes to your mono amp (this will also be 4 guage).
  • 1- 60 amp fuse. this fuse will go into the distro block to fuse the 8 gauge wire to your 4 channel amp.

2.)
  • 1 105 amp fuse. this fuse will go near your battery to protect your main 4 guage power line.
  • 1 75 amp fuse. this fuse will go in the distro block to fuse the 4 gauge to your mono amp.
  • 1 40 amp fuse. this fuse will go in your distro block to fuse the 8 gauge wire to your 4 channel amp.


I hope that sums it up for you! if you have any questions on what to order from knukonceptz, give them a call. their number is on thier site. they are great to deal with!




Re: adding 4 channel amp
Tuesday, June 27, 2006 11:10 PM
Yep
So I think that means we figured it out and are all agreed, lol.

-Seth



Re: adding 4 channel amp
Wednesday, June 28, 2006 10:04 PM
i would like to thank wizkiddrummer and schembo2000 for your help... i plan to install this setup this weekend... i'll let you know how it turns out....
Re: adding 4 channel amp
Wednesday, June 28, 2006 11:58 PM
ur welcome
good luck
when u get started and actually do it, it's gonna make more sense too

-Seth



Re: adding 4 channel amp
Thursday, June 29, 2006 6:08 PM
would it really hurt for cavyballa to use 8 guage wire on an amp that reccomends 4guage?? cuz that is what freind is doin with his set up and everything is workin fine



Re: adding 4 channel amp
Thursday, June 29, 2006 7:34 PM
cavalier pusher wrote:i would like to thank wizkiddrummer and schembo2000 for your help... i plan to install this setup this weekend... i'll let you know how it turns out....


you're very much welcome! hope everything works out for ya! i expect pics

Quote:

would it really hurt for cavyballa to use 8 guage wire on an amp that reccomends 4guage?? cuz that is what freind is doin with his set up and everything is workin fine


a little more info would be good. also who's cavyballa?? oh, and start a new thread...



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