Acoustic Research AR-4xa, made in USA

Link: link 1 | link 2 | audio-database

System: 2 ways, 2 speaker acoustic suspension system, and a book shelf type
Use unit:
- For low-pass: 20cm corn type
- For high regions: 6cm dome shape
Frequency response: 45Hz - 20kHz
Impedance: 8ohms
Allowable input: Suitable for the amplifier beyond 15W
Crossover frequency: 1kHz
Dimensions: Width 255x height 482x depth of 225mm
Weight: 7.5kg