1. Series-Parallel Connection:
- Connect two speakers in series to create a 12 ohms load (6 ohms + 6 ohms).
- Connect the remaining two speakers in parallel with the series-connected pair to create a 6 ohms load.
Result: You'll have a total impedance of 6 ohms, matching the amplifier's output impedance.
2. Bridge Mode (if the amplifier supports it):
- Bridge mode combines two amplifier channels into a single, more powerful channel with double the output voltage.
- Connect two speakers in series on each channel, creating two 12 ohms loads.
- Since the amplifier's output impedance doubles in bridge mode, the two 12 ohms loads will present a total impedance of 6 ohms.
Result: You can connect four speakers to the bridged amplifier, with a total impedance of 6 ohms.
Note:
- Always refer to the amplifier's manual or specifications to ensure that it supports bridge mode and the recommended impedance range.
- Some amplifiers have built-in impedance matching capabilities that allow you to directly connect speakers with different impedances. Check your amplifier's features for such capabilities.
By following these methods, you can safely match a 6 ohms impedance amplifier with 4 speakers, ensuring proper operation and preventing potential damage to your equipment.