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4 Ohm vs 8 Ohm speakers?

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#1 of 2 Tom Weeks

Tom Weeks

    Stunt Coordinator

  • 73 posts
  • Join Date: Aug 23 2001

Posted June 28 2002 - 03:44 PM

Is there any advantage in having a 4 ohm set of speakers over an 8 ohm? Is there any significant difference in the two ratings besides the power output?

#2 of 2 John F. Palacio

John F. Palacio

    Supporting Actor

  • 576 posts
  • Join Date: Jan 06 2002

Posted June 29 2002 - 01:29 AM

Hi, Tom.

4 ohm speakers will "drain" twice the current from a given amplifier than 8 ohm speakers. (This applies only to amplifiers with no output transformer)

However for this to result in more sound output would necessitate both speakers in question to be of the same efficiency.

In other words if you have identical speakers one being 8 ohms and the other 4 ohms, the 4 ohm speaker will be 3 dB louder.

Best regards.

Freelance Video Control Engineer