Scanspeak D3806/820000 Mid Tweeter - Classic Range

D3806/820000

Scanspeak D3806/820000.

Upper midrange unit for Spendor SP1/2.

Featuring the unique Symmetrical Drive (SD-2) motor system with copper capped pole piece, a 38mm critically treated soft textile dome and a low resonance damped rear chamber. Optimised for the upper midband, this superbly engineered unit conveys excellent depth of detail and resolution.

Symmetrical drive is a system incorporating copper caps / sleeve around the pole piece - this effectively forms a very low impedance shorted turn (called a Faraday ring) within the magnet circuit, the net result being that the tweeter voice coil impedance remains largely constant across it's operating frequency range, resulting in a more linear output with greater top end extension.

A very highly regarded unit capable of true high end results.

Key Features:

  • Patented Symmetrical Drive (SD-2) motor
  • 1½" Textile Dome Diaphragm
  • Low Resonance Rear Chamber
  • Optimized for Upper Midrange

Basic parameters:

Resonant frequency (fs) 450 Hz Nominal impedance (Zn) 6 Ω
Effective diaphragm diameter 42mm DC resistance (Re) 5.7 Ω
Ferrofluid ? Y/N No RMS power handling 100 W
Recommended crossover 1 kHz/12dB Faceplate diameter 125 mm
Sensitivity (2.83V/1m) 89 dB Cutout hole diameter 98 mm

Here's the full datasheet:

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