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Atlas Sound GD87 8" Coaxial Loudspeaker

Brand:| Model: GD87
Overview
The high-quality, 25 watt GD87 utilizes a post mounted tweeter which adds strength to the assembly and provides an attractive appearance.
Highlights
  • Individually packaged for stocking & ordering convenience
  • Industry standard 8" (203 mm) coaxial, 16 watt loudspeaker
  • High quality factory installed 8 watt line matching transformer
  • Offers proven performance with wide frequency response
  • Post-mounted tweeter adds strength and a more attractive appearance
Part # 
242-9374
Weight: 3.45 lbs.  
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Product Details

Atlas Sound GD87 8" Coaxial Loudspeaker

The GD87 is a high performance coaxial loudspeaker with performance specifications identical to the legendary Atlas Sound Model C803A. This similarity in sonic quality insures that existing C803A systems may be expanded with the new GD87 without any noticeable sonic or performance differences. The high-quality, 25 watt GD87 utilizes a post mounted tweeter which adds strength to the assembly and provides an attractive appearance. This coaxial loudspeaker features a 45 Hz-19 kHz (nominal) frequency response and a broad, uniform dispersion pattern of 105° (2 kHz octave band). The GD87 combines a full-size 8" (203 mm) dia., low-frequency reproducer and a 3" (76 mm) high-frequency reproducer. The two sections are coupled via a built-in crossover network. The woofer has a 10 oz. (260 g) ceramic magnet; the tweeter has a 2.35 oz. (67 g) ceramic magnet. The unit has an average sensitivity of 96 dB (1W/1M). The loudspeaker is matched with a high efficiency 8 watt 70.7V transformer with a maximum insertion loss of 0.6 dB. This premium transformer is constructed of audio grade laminations and has a full range frequency response of +1 dB from 50 Hz to 15 kHz. The primary taps are 1, 2, 4, and 8 watts.

Specifications: • Depth: 2-7/8" (7.30 cm) • Diameter: 8-1/8" (20.64 cm) • Shipping weight: 4.33 lbs. (1.96 kg) • Frequency response: 55 Hz-15 kHz (±7 dB) • Power taps: 1, 2, 4, 8 • Speaker type: Treated paper • Dispersion: 105° (2 kHz Octave Band, -6 dB Points) • Sensitivity: 96 dB average • UL listed/standard: 1480, 2043.



Product Specifications
  • Input Rating70V
  • Mounting StyleIn-ceiling
  • Special FeaturesUL1480,UL2043
  • Woofer Diameter8"
Atlas Sound GD87 8" Coaxial Loudspeaker
  • BrandAtlas Sound
  • ModelGD87
  • Part Number242-9374
  • UPC612079179978
  • Product CategoryIn-Ceiling / On-Ceiling Speakers
  • Unit of MeasureEA
  • Weight3.45 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Atlas Sound GD87 8" Coaxial Loudspeaker

Product Q&A

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Atlas Sound GD87 8" Coaxial Loudspeaker

Optimal enclosure size/type for hifi use

I like the high efficiency of these and plan to use them for hifiwith a T-amp. What is the ideal box size/type for best bass? Ifbass reflex, how large/long should the port tube be?
Asked by: E__M
This speaker is only intended to be used for a public address in ceiling application and would not be a good choice for hi-fi use. This is the reason the parameters are not listed for modeling an enclosure. This will have a very high Qts which means a large sealed or open baffle enclosure are recommended, but due to a very high Fs I wouldn't expect anything below 150 Hz from this driver regardless of size/type of enclosure.
Answered by: MattP
Date published: 2012-09-29

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