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NHT's compact Super 8 delivers high-quality bass without a high price tag. It produces deep, clean bass equally well with both movie and music soundtracks thanks to the 8" woofer and 110-watt amplifier. Plus, its compact footprint measures less than a square foot, so it'll practically disappear into your room. Use the Super 8 with NHT's perfectly matched SuperZero 2.0 satellite speakers and you can create a fantastic compact sound system that puts the excitement back in your movies and music.

Airtight design for tight, clean bass
The Super 8 has a built-in Digital Signal Processor (DSP) that dynamically controls the amplifier power, equalization, and crossover functions to ensure that you hear deep, controlled bass without distortion. A special equalizer switch on the back helps you optimize the sub's output for either movies or music. And unlike most subs, it has an acoustic suspension (sealed) cabinet design — a common feature of NHT speakers. It means there's no hole or port to interact with your room, so you'll hear tight bass no matter where you put the sub.

Product Highlights:

  • 110-watt RMS BASH® digital hybrid amplifier
  • 8" front-firing woofer
  • frequency response 37-210 Hz (-3dB)
  • continuously variable 60-150 Hz crossover
  • EQ switch for music or movie mode
  • phase switch
  • auto on/off
  • LFE and stereo line-level inputs
  • speaker-level input and output
  • USB port for optional wireless adapter
  • includes four adjustable spiked feet with floor protectors
  • high-gloss black finish
  • 11-1/4"W x 12-3/8"H x 13-3/4"D
  • weight: 18.2 lbs.
  • warranty: 5 years on woofer, 1 year parts and 90 days labor on amplifier
  • Our 60-day money-back guarantee

Why add a powered subwoofer?

A powered subwoofer gives you bass you can feel as well as hear. Our customers love the depth and impact their subs add to music and movies. We hear comments like "it brings out sounds I didn't know existed in discs I've watched a million times." Powered subwoofers aren't just for big bass that rattles your picture frames; they can also deliver tight, accurate lows. If you haven't shopped for a powered sub in a while, you might be surprised at how small they get. Look for an ultra-compact model if you want to tuck your sub away under an end table or in a corner.

NHT Super 8 Reviews

Hands-on research

What's in the box?

Download owner's manual

  • 8" Powered subwoofer
  • Detachable grille (installed)
  • 8' AC power cord
  • 4 Spiked feet
  • 4 Floor protectors
  • 4 Hex-nuts
  • Setup Guide
  • Limited Warranty

Features and Specs

Enclosure Acoustic Suspension
Video Shielded No
Woofer Size (inches) 8
Woofer Composition Pulp (paper)
Firing Direction Front
Wireless Optional
Preamp-Level Inputs Yes
Speaker-Level Inputs Yes
Speaker-Level Outputs Yes
Low-Pass Crossover Freq 60-150
High-Pass Crossover Freq 60-150
Phase Switch Yes
Amplifier Output (watts) 110
Frequency Response 37-210 Hz
Height (inches) 12-3/8
Width (inches) 11-1/4
Depth (inches) 13-3/4
Weight 18.2 lbs
Speaker Parts Warranty 5 Years
Speaker Labor Warranty 5 Years
Amplifier Parts Warranty 1 Year
Amplifier Labor Warranty 90 Days

Product Research



Overview: The NHT Super 8 powered subwoofer is great for use with any high-quality compact speaker that's bass shy, and is a perfect match for the NHT SuperZero satellite speakers (228SZ20B, sold separately). The NHT Super 8 powered subwoofer delivers high-end deep bass performance and is great for both home theater & stereo music. Adding a powered subwoofer to your home theater or home stereo system offers plenty of benefits -

  • takes the deep bass load off of your main speakers, so they play louder with lower distortion
  • helps your amplifier by handling the deep bass (your amp handles just the midrange and high frequencies)
  • blends seamlessly with your main speakers and disappears

DSP (Digital Signal Processing )Engine: The integrated DSP engine dynamically controls the powered subwoofer's amplifier power, equalization, and filter functions. As a result, the Super 8 plays louder, deeper, with more control. The DSP's built-in limiter and compressor even protects the woofer from being over-driven.

110 Watt Amp: The NHT Super 8 powered subwoofer employs a built-in BASH amplifier rated at 110 watts, 4-ohms, 0.5% THD.

Note: Always provide adequate space for ventilation of the subwoofer amplifier. Do not place the powered subwoofer directly against a wall, curtains, or any other surface.

8" Woofer: The NHT Super 8 powered subwoofer houses a heavy-duty, long-throw, pulp-cone 8" woofer that has been custom designed by NHT specifically for the Super 8's closed box, acoustic suspension design. The loaded woofer fires forward into the room (not down-firing).

Sealed Enclosure: The NHT Super 8 powered subwoofer features a sealed enclosure. It has no holes or ports that can interact with its surroundings making it ok to put it wherever it fits in your space, instead of the other way around. An instead of boomy, sloppy bass - you get deep, accurate, natural sounding bass.

Gloss Black Finish: The Super 8 powered subwoofer comes beautifully wrapped in the signature NHT gloss black finish.

Mounting Feet: The NHT Super 8 comes with four aluminum spiked feet for carpeted flooring. There are also four aluminum floor protectors included, in case you have hardwood or tile flooring. The feet are adjustable to combat against uneven floors.


Subwoofer Volume Control: The NHT Super 8's volume control (min/max) matches the powered subwoofer's volume to the your satellite speaker's output.

EQ Switch: A Unique EQ switch tunes the powered subwoofer for your choice of Movie or Music. The Movie setting augments soundtracks and special effects, while offering higher output. The Music setting will provide lower, more balanced bass response.

Crossover: The NHT Super 8 incorporates a variable low-pass crossover (60-150Hz). The crossover is active for the powered subwoofer's stereo line-level and speaker level inputs. It does not function with the LFE input (you will need to use the low-pass crossover built into your A/V receiver).

Phase Control: A phase control (0/180-degrees) integrates the Super 8's output with your satellite speakers for a more blended, smoother sound.

Auto On/Off: The NHT Super 8 will automatically turn-on when it senses an audio signal through its line-level or speaker-level terminals. The powered subwoofer will then turn itself off when there is no sound present for approximately 20 minutes. Or, you can leave the powered subwoofer always on.

USB Wireless Adapter (optional): There is a USB (type-A) connection for use with a future NHT wireless audio adaptor (sold separately).


LFE/Stereo Input: The Super 8 has an LFE/RCA input for connection to your receiver's sub out, and stereo RCA inputs for your receiver's line-level preamp outputs.

  • LFE/Subwoofer Input: The most common connection for A/V receivers today is to run a single audio cable from the receiver's Subwoofer or LFE output to the powered subwoofer's LFE/RCA input. The LFE input bypasses the powered subwoofer's crossover control and uses the built-in crossover settings in your receiver.
  • Stereo RCA Input: Some older A/V or stereo receiver only offer preamp outputs. In this case, connect a pair of audio cables from the left/right preamp outputs on the receiver to the two stereo RCA inputs on back of the powered subwoofer. With this connection, you will use the powered subwoofer's integrated crossover controls.

Speaker-Level Inputs/Outputs: There are speaker-level inputs with a high-pass (bass removed) speaker level outputs to connect your satellite speakers, if your receiver lacks LFE/Stereo RCA Inputs. Simply connect a pair of stereo speaker wires from the receiver to the speaker-level input terminals on the powered subwoofer. Then connect a second stereo pair of speakers wires from the powered subwoofer to each satellite speaker. With this configuration, you will use the powered subwoofer's integrated crossover controls. Not only will the crossover prevent high-frequencies from reaching the powered subwoofer, it will prevent low-frequencies from reaching your connected satellite speaker to prevent unwanted distortion.

Universal Power Supply: The Super 8 uses a super-efficient, universal power supply (100v to 240v) to deliver full output anywhere in the world.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.