[loganross]

Hi,

Can someone help me understand ohms. I have 4 ohm speakers and need to make sure I purchase the proper amp.



Thanks

 

[Joe_M]

OHMs deal with electrical resistance. Resistance is the opposition of electron flow in a circuit. A very basic explaination is that the lower the OHM the less the resistance the more power/current it will draw.


Here's an excellent explaination:
http://www.marktaw.com/recording/Ele...dSpeakers.html

 

[loganross]

Thanks. So if I have a MArantz receiver rated at 70w @ 8ohms, is it ok to drive celestion A1 speakers rated at 30w-100w @ 4ohms?

 

[abuethan]

The owners manual should tell you the output wattage in 8-6-4 Ohms. if not check the Marantz web site.

 

[Audiguy3]

The 4 ohms is the impedance of the speaker - but it varies vs different frequencies. You treat it like a resistor - but the impedance can be as low as 2 ohms or lower at certain frequencies. This is a taxing load on some amplifiers (Pioneer I believe have problem with this)

It usually is not too much of a issue unless you drive the speakers very loud and then the transistor can overheat and shut the system down.

Marantz is a good company - you might write them about your question - and also your speaker company to find the real impedance low.


Reggie

 

[brickie]

i don't know if the elites have a problem driving tough loads,but the regular line does..i know this from experience.


brickie