03-15-2009, 07:20 PM
When the specs for a amplifier kit say "to be used with 4 to 8 ohm speakers" does that mean 6 ohm speakers will work? or does that mean 4 or 8 ohm speakers only.
03-15-2009, 08:38 PM
Yes, 6 ohm speakers will work just fine.
What hurts an audio amplier is excessive current draw which can damage the output transistors. Your amp specifies 4-8 ohms. You could actually run lower ohm speakers as long as you did not crank up the volume and exceed whatever the current limit of the transistors.
Be aware that the 4, 6, or 8 ohm specification of a speaker is impedance, not resistance. If measured with an ohmmeter, a "4 ohm impedance" woofer will actually measure about 3 ohms. A "6 ohm impedance" woofer will measure about 4.5-5 ohms, and an "8 ohm impedance" woofer will measure about 6-6.5 ohms.
Due to the inductance of the voice coil, the actual impedance will always exceed voice coil resistance.