ESS

AMT 1D (Rev. 3)

Speaker

Main Details
Maker ESS Brand
Function
Form Factor Floorstanding
Signal Path Passive Hardware
Made In United States
Date Produced 1987
Dimensions
(H × W × D)
Weight 85lbs (Shipped)
Frequency Response 35Hz-23kHz ±3dB
Notes Return to old style Great Heil AMT
Additional Specifications
Treble Heil Air-Motion Transformer Total Radiating Area: 21.5in²
Midrange/Bass 12" Polypropylene Cone
Passive Radiator 12" Rigid EPS Styrene
Sensitivity 91dB/W/m
Impedance (Nominal) 6Ω
Crossover Frequency 800Hz
Crossover Slope 18dB/Oct Third Order
Dispersion (Horizontal) 120°
Dispersion (Vertical) 30°
Recommended Amplifier Power 35-400W
Power Handling (Peak) 400W
Enclosure Type Passive Radiator
Enclosure Construction High Density Fiberboard
Finish Oiled Walnut Grill: Black
MSRP (1987) $1270 Per Pair
Connections
Input
Connector: Binding Post (Universal)
Controls
Parameter: Midrange/Presence (800Hz-5kHz
Control Type: Rotary Pot
Range: +3dB to -6dB
Parameter: Brilliance (5kHz-23kHz)
Control Type: Rotary Pot
Range: ±3dB

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