ESC
D-4A

D-4A

BrandDesign Acoustics
DesignerGeorge Sioles
FunctionSpeaker
CountryUnited States
Form FactorFloorstanding
Signal PathPassive Hardware
Dimensions41.9 × 96.5 × 27.9 cm (W × H × D)
Weight55lbs
Frequency Response35Hz-18kHz ±3dB
Treble1" Dome
Treble1.5" Paper Cone (x2)
Midrange5" Paper Cone
Bass8" Paper Cone (x2) (Fs: 25Hz)
Sensitivity92dB/W/m
Impedance (Nominal)4Ω
Crossover Frequencies700Hz, 2kHz
Dispersion (Horizontal)180°
Dispersion (Vertical)90°
Enclosure TypeSealed
Enclosure Resonance41Hz
Recommended Amplifier Power20-125W
FinishWalnut
MSRP (1979)$278
Connections
  • Input · Binding Post (Universal)
Controls
  • High Frequency Attenuation · Toggle Switch · 3dB
  • Low Frequency Attenuation · Toggle Switch · 3dB