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General| Type | Subwoofer |
|---|---|
| Driver Size | 18 in |
| LF Transducer | EVS-18S |
| Enclosure Type | Bass Reflex |
| Enclosure Material | Plywood |
| Grill | Steel |
| Nominal Impedance | 8 Ohms |
| Crossover Frequency (Recommended) | 80 Hz - 120 Hz |
| Connectors | 2 x NL4 |
| Coverage (Nominal -6 dB) H | Omnidirectional |
| Coverage (Nominal -6 dB) V | Omnidirectional |
Details the low-frequency output and response limits of the subwoofer system.
Specifies the long-term average power handling per EIA RS-426A and maximum woofer output.
Indicates the sound pressure level at 1 meter with 1 watt input in an anechoic environment.
Outlines harmonic distortion percentages at various power input levels and frequencies.
Defines the nominal and minimum impedance and input connection types.
Provides the height, depth, and width of the subwoofer enclosure.
Describes the SH-1800 as a 400-watt horn-loaded subwoofer with unique cabinet design.
Details primary use in sound reinforcement and supplementing low-frequency output.
Explains acoustic output increases and mutual coupling when using multiple SH-1800 units.
Advises on active crossover frequencies and suitable power amplifier ratings.
Recommends a high-pass filter to prevent damage from low-frequency signals.
Describes how the frequency response was measured using specific test conditions.
Details the rigorous EIA RS-426A power test for thermal and mechanical reliability.
Describes the rugged construction using plywood, carpet, and protective hardware.
Outlines the five-year guarantee against defects, exclusions, and service procedures.
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