The ZX-4 is a floorstanding loudspeaker from Mission, built with notably high sensitivity and a demanding impedance. The ZX-4 brings Mission's considered engineering to a substantial floorstanding format.
Key specs that matter
Rated response is 40Hz to 24,000Hz within plus-or-minus 3dB. Sensitivity is a notably high 90dB into a demanding 4 ohm load, with a wide recommended amplifier power range of 25-150W. At 107.5 x 24.0 x 36.2cm and 24.6kg, the ZX-4 represents a serious floorstanding commitment.
Sound and use context
Expect explosive dynamic headroom reflecting the notably high 90dB sensitivity, meaning this speaker reaches satisfying volumes readily from even modest amplifier power despite the demanding 4 ohm impedance.
Pairing
The demanding 4 ohm impedance combined with the wide power range calls for an amplifier with genuine current delivery to fully exploit this speaker's dynamic potential.
Alternatives
Mission's own QX-4 MKII shares a similar demanding impedance within the same broader floorstanding catalogue at somewhat more modest sensitivity.