Re: Is it possible to........ (VRSexed)
quote:[HR][/HR]It also depends on the voice coil capacity of the speaker. If the speaker is a dual-voice coil - 8 ohm speaker then you can run two channels of amplified output to the speaker creating a 4 ohm load... you can then also drop the impedence of the amp down to 2 ohms by bridging the 2 channels of output as long as your amplifier supports it.[HR][/HR]
First, you'll need a dual voice-coil speaker.
Then, you'll need an amplifier that's bridgeable.
Then, you'll need to make sure that the impedance of each voice coil can be handled by the amplifier in a bridged configuration.
When you bridge an amplifier, the power output into a load quadruples. It does this by increasing the possible voltage swing to the speaker. When you double the voltage into a fixed resistance, the current doubles. Double the current and double the voltage equals quadruple the power. So the amplifier will need to also handle double the current than the load would normally draw.
The amplifier has no "impedance" in that sense (it has an output impedance, but that's probably on the order of 0.01 ohms, and the input impedance is probably around 10,000 ohms), and the speaker's impedance doesn't change.
