When connecting multiple speakers (daisy chaining), you need to make sure you’re using the right amplifier output. To get the correct value, you need the divide the impedances bij the amount of speakers, assuming all speakers have the same impedance rating (as they should). So two speakers with an 8 ohm rating, will total as a 4 ohm load, so connect to the 4 ohm speaker output on the amplifier.
Do not use more than one amplifier output at the same time to connect multiple speakers! This wíll damage the amplifier.