Ultima 20 Mk4

Headroom Notes

87 dB at 2.83 V / 1 m. On a 4-ohm nominal that is 2 W, so the watt-scale equivalent is about 84 dB/W/m - the printed number is the flattering one, as it almost always is.

Amplification Warning

The one Teufel passive speaker whose impedance row is a number: 'Nennimpedanz 4 Ohm', where the rest of the range prints '4 - 8 Ohm'. That makes this the only Teufel in the batch a calculator can use. 4 ohms nominal with a 50 W long-term rating is a real 4-ohm load on a small box; receivers rated only into 8 ohms will hit protection sooner than the modest size suggests.