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4ch amp running sub and 4 speakers 

 

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 Post subject: 4ch amp running sub and 4 speakers
Posted: Mon Sep 09, 2019 4:38 am 
Getting Side Ways
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Age: 34

Posts: 721

Joined: 12th Dec 2004

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Ride: Na fairlane, xe 351 ute

Location: penrith, sydney
NSW, Australia

Ok need someone with more knowledge than myself to confirm my math here please.

1. 4ch amp rated at
60rms x4 @4ohms
90rms x4 @2ohms

Rear speakers
60rms 4ohm

Front speakers
40rms 4ohm

So plan is single sub running off Channel 3 & 4 bridged
Ch1 & 2 running 4 speakers in parallel
Each channel 4ohm + 4ohm in parallel =2ohm but each would get half the output so 45rms to each speaker does that sound correct?

Rears will run a minimum of 30rms so thier good but fronts would be 40rms rated but receiving 45rms.

The other option is just to wire the rears onto the amp 60rms speakers matched to 60rms amp... Would this be better considering the rears are 6.5" and the fronts are only 4" (run the 4s off the deck on a high pass filter)

 

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Current cars
1983 XE Ute - xf front, worked 351, straight gas
1990 Na fairlane - stock

ex cars
Fg xr6t, 80 series cruiser, ba xt, ea s-pac (xr6 test model), ke laser.

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 Post subject: Re: 4ch amp running sub and 4 speakers
Posted: Mon Sep 09, 2019 4:40 am 
Getting Side Ways
Offline
User avatar

Age: 34

Posts: 721

Joined: 12th Dec 2004

Gallery: 4 images

Ride: Na fairlane, xe 351 ute

Location: penrith, sydney
NSW, Australia

I should add this is a budget install using bits I already have eventually I will likely run a 4ch just for speakers and a mono block for the subs but I'd redo the whole system with better gear

 

_________________

Current cars
1983 XE Ute - xf front, worked 351, straight gas
1990 Na fairlane - stock

ex cars
Fg xr6t, 80 series cruiser, ba xt, ea s-pac (xr6 test model), ke laser.

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 Profile  
 
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