Difference between revisions of "ATL HD 311"

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* Chassis:
 
* Chassis:
 
** woofer: 2x 162 mm [[Westra]] SW 180-808, 8 Ohm
 
** woofer: 2x 162 mm [[Westra]] SW 180-808, 8 Ohm
midrange: 87 mm [[Seas]] 10 F-M H084, 8 Ohm
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** midrange: 87 mm [[Seas]] 10 F-M H084, 8 Ohm
 
** tweeter: 28 mm modified [[Isophon]] KK10 fabric dome tweeter, 4 ohms.
 
** tweeter: 28 mm modified [[Isophon]] KK10 fabric dome tweeter, 4 ohms.
 
* Power handling (rated/music b.): 110 watts.
 
* Power handling (rated/music b.): 110 watts.
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== Images ==
 
== Images ==
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[[image:ATL HD 311 f.jpg]]
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[[image:ATL HD 311 f2.jpg]]
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[[image:ATL HD 311 l.jpg]]
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[[image:ATL HD 311 l2.jpg]]
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[[image:ATL HD 311 u.jpg]]
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[[image:ATL HD 311 s.jpg]]
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[[image:ATL HD 311 b.jpg]]
 
[[Image:Atlhd311.jpg]]
 
[[Image:Atlhd311.jpg]]
  

Latest revision as of 10:44, 28 November 2025

Data

General

  • Manufacturer: ATL
  • Model: HD 311
  • Years of manufacture: 1987-1989
  • Made in: Germany
  • Colors:
  • Dimensions 246 x 906 x 373 mm (W x H x D).
  • Weight:
  • Original price approx.: DM 1.100,--/piece


Technical Data

  • Type: 3-way with horn resonator
  • Chassis:
    • woofer: 2x 162 mm Westra SW 180-808, 8 Ohm
    • midrange: 87 mm Seas 10 F-M H084, 8 Ohm
    • tweeter: 28 mm modified Isophon KK10 fabric dome tweeter, 4 ohms.
  • Power handling (rated/music b.): 110 watts.
  • Efficiency:
  • Frequency response: 21 - 23,000 Hz.
  • Transitional ranges: 130 Hz (horn resonator)/1650/6100 Hz
  • Impedance: 6 Ohm


Special Features

  • Horn resonator
  • Acoustically Active crossover:
    • HT: 2nd order high pass, 3.3 uF | 0.15 mH
    • MT: 1st order high pass, 4.7 uF.
    • TT: low pass 1st order, approx. 0.9 mH

Remarks

Other models of the same series:


Images

ATL HD 311 f.jpg ATL HD 311 f2.jpg ATL HD 311 l.jpg ATL HD 311 l2.jpg ATL HD 311 u.jpg ATL HD 311 s.jpg ATL HD 311 b.jpg Atlhd311.jpg

Reports

Links