IQ 4180 AT

Data

General

• Manufacturer: I.Q
• Model: I.Q 4180 AT
• Year of manufacture: 1990
• Made in: Essen, Germany
• Colour: oak P43, oak white, oak black, oak grey, mahogany, others against surcharge
• Dimensions: 270 x 1060 x 300 mm (W x H x D)
• Weight: 23 kg
• Original price approx.: 2400,- 2800,- DM (UVP pair)

Technical data

• Type: 3 1/2-way double chamber TL resonator floorstanding speaker
• drivers:
  • woofer: Vifa M21WJ-49-08 replacement Vifa woofer M21WO-39-08.
  • Midbass: Vifa M21WJ-49-08 replacement Vifa woofer M21WO-39-08
  • midrange: dome 75 mm (Vifa D75MX-30-08) replacement Vifa D75MX-41-08
  • tweeter: dome 25 mm (Vifa D26TG-05-06) replacement Vifa D27TG-35-06
• Power handling (nominal/music): 120/180 watts.

Efficiency:

• Frequency Response: 25 - 24,000 Hz.
• Transient response: (for LS with multiple drivers).
• Impedance: 4 Ohm

Special Features

• real wood veneer

Remarks

Other models in the same series:

• 2140 AT
• 2160 AT
• 3140 AT
• 4180 AT
• 5180 AT

Pictures

• 

  real oak veneer

• 
• 

  On the bathing beach on the Rhine below Bremer Straße

• 

  The rare white version of the 4180 AT

Reports

Hifi- Vision 9/1989

Upper class 9th place