The Detti 125 power amplifier supports speaker loads with an impedance of 2, 4 and 8 ohm. The Detti 300 supports 4 and 8 ohm. You can usually find the impedance rating on the back of your cabinet. For best performance, connect your speaker to the matching amplifier output, as indicated on the backside.
There’s no harm done to the amplifier if you connect your speaker to a different output impedance, but the sound will be completely wrong and the actual power output is either higher or lower than the rated output. This can reduce the volume significantly, or damage the speaker if the actual output exceeds the speaker’s rating.
!Do not turn on the poweramp without a load connected!
!Do not use more than one amplifier output at the same time to connect multiple speakers! This wíll damage the amplifier!