Mcintosh ML-4C Speaker

https://www.hifiengine.com/manual_library/mcintosh/ml-4c.shtml

Specifications

Type: 5 way, 11 driver loudspeaker system

Crossover Frequency: 250, 1500, 3000, 7000Hz

Impedance: 8Ω

Sensitivity: 89dB

Bass: 4 x 12"

Midbass: 1 x 8"

Midrange: 4 x 1-1/2" dome

Tweeter: 2 x 1-5/8" coaxial radiator