different ohm load/more power demanding?

[SQBubble 10+ year member]

All things equal, same car, same electrical system, same rms POWER with 4amplifiers

option#1: everything is running @4ohm (5000rms)

option#2: everything is running @1ohm (5000rms)

is it true that 1ohm will **** off electrical system LOT more than 4ohm, SAME POWER?

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[2000LaDe 10+ year member]

4 ohm would be cleaner.

 

[JimJ 5,000+ posts]

I doubt you'd be able to tell under 80Hz //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[2000LaDe 10+ year member]

ur definetly right there

lol but truth be told //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[knukonceptz 10+ year member]

Comes down to efficiency at this point. A MMATS engineer would know that answer, at one time they made the same amp stable to different loads (might even still today). My guess is that they would draw the same if they amps are the same with the fact one makes more power at a lower ohm.

The whole Watts=Volts x Amps does not require impedance to calculate so efficiency is my final answer.......

 

[johnecon2001 5,000+ posts]

If its the same amount of power.. its not going to pull more amperage.

 

[dleccord 5,000+ posts]

what about a full range setup(not common to me)? would it be cleaner?

 

[CBFryman2 5,000+ posts]

Depends on amplifier efficency at the given ohm load. How the coils react at each particular wiring scenario, etc...

 

[helotaxi 5,000+ posts]

If they make exactly the same power the amp will have to be more efficient at the higher impedance. The output devices and switching devices have an on resistance value. At lower impedance the current required for a given power is higher and higher current through a fixed resistance means a higher votage drop and thus more powr lost as heat and thus lower efficiency.