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Design
NHT products are designed to deliver refined, musical sound from attractive and affordable packages. Our
efforts are guided by the study of human hearing and are optimized for real-world use. Every NHT product
undergoes rigorous testing and quality control at the factory to ensure you years of listening pleasure.
The NHT SA-3 Subwoofer Amplifier is a powerful and versatile monaural low frequency amplifier. The SA-3 and
SW3S passive subwoofer together comprise the SW3P Powered Subwoofer System. Additionally, the SA-3 is
designed to power the subwoofer sections of NHT tower speakers when connected in biamplified configura-
tions.
The SA-3 is optimized for powerful low frequency reproduction, with a host of convenience features and
sufficient high output capability to drive up to two subwoofers. Its discrete Class G design enables cooler
operating temperatures, employing a massive power transformer and dual-rail power supplies for high output
and low distortion. Only high-precision, low-noise componentry is used in the crossover circuits, for seamless
blending with any loudspeaker.
Placement
The SA-3 amplifier’s stand-alone design allows it to be placed either with other electronic components in the
system or on top of the SW3S subwoofer enclosure.
Note: To prevent the SA-3 amplifier from overheating, always be sure to provide adequate space for
proper ventilation.
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SA-3 Amplifier Specifications
· System Type: Monaural Class G subwoofer amplifier
· Power Output: 250 watts RMS into 6 ohms
· Frequency Response: 10Hz - 150Hz +/-3dB
· Distortion: Less than 0.03% at full power
· Crossover: Low-pass continuously variable between 35-150Hz, 24dB/octave
Selectable high-pass at 65, 80, 100, 125 or 150Hz, 12dB/octave (line-level)
· Input Connectors: Gold plated RCA jacks for line level input
· Output Connectors: Gold plated RCA jacks for line level output
Gold plated 5-way binding posts for subwoofer output
· Phase Control: 4-position selectable at 0, 90, 180 and 270 degrees
· Weight: 24 lbs.
· Dimensions: 5.125"H x 17"W x 14.5"D
· Finish: Black anodized front panel, black painted chassis