To legally install cable TV or a DSS system, there must be a ground conductor from the dish or cable tied to the earth outside of the building. This guarantees that if struck by lightening, the current will flow to ground (earth) outside of the building, never endangering someone’s life inside or damaging any equipment. Removing the ground from the DSS or cable system is not a legal or moral option. We use a grounded power cord on our powered subwoofers and amplifiers to ensure that the customer is always safe. If there is ever any internal short in the subwoofer amplifier between the power sup- ply and the chassis, the current will be shunted to ground (earth) through the power cord and the fuse will blow. The customer will never be in any danger of electric shock.

The proper way to break the ground loop in the system is to do it at the signal level. This should be done at the output of the device that is causing the ground loop. In this case it is the DSS or cable system. The best way to do this is with a ground loop isolator. A good one is avail- able from Jensen Transformers.

Jensen Transformers, Inc., 7135 Hayvenhurst Ave. Van Nuys, CA 91406

Voice: (818) 374-5857 Fax: (818) 374-5856 www.jensen-transformers.com

Part# VRD-1FF Retail cost of $59.95

If these steps don't restore the Ten or Twelve to operation, contact your local Authorized NHT Dealer or NHT for assistance.

Satisfaction

Your satisfaction with your new NHT Ten or Twelve Subwoofer is important to us. Please note the matched products and accessories we provide for them, and your warranty, printed on the back of this manual. If you have any questions regarding your speakers' use, feel free to call NHT at 1-800-NHT-9993. Enjoy your listening and viewing!

Glossary

Active: Uses electrical power.

Amplifier: An electronic device that increases the cur- rent and/or voltage of a signal, providing power to the loudspeakers (i.e. power amplifier, integrated amplifier, receiver).

Bass: The range of audio frequencies below 180Hz, characterized by low pitch.

Crossover: An electronic circuit that divides an audio signal into different frequency ranges.

Distortion: Any deviation from the original signal.

Driver: The moving part of a loudspeaker, which radiates sound energy.

Dynamics: Variations in loudness of sound.

Frequency: A rate of vibration, which corresponds to musical pitch, expressed in Hertz (Hz).

Full Range: A signal encompassing the entire audible frequency spectrum.

Hertz (Hz): A unit equal to one cycle per second, used to measure the frequency of a signal or sound. High-Pass Filter: A filter that passes only high frequen- cies above a lower limit.

Impedance: A measure of the total opposition to current flow in an alternating current circuit, measured in ohms. In Phase: The polarity of an audio signal when connect- ed as follows: (+) to (+) and (-) to (-).

Integrated Amplifier: A preamplifier and amplifier built into one chassis.

Interconnect Cable: A length of shielded wire with plugs at both ends for feeding signals from one electronic device to another.

L.F.E.: "Low Frequency Effects"; The .1 channel of infor- mation recorded on most multichannel digital sound for- mats.

Line-Level Connection: Low level RCA/phono or XLR type connection.

Load: A term used to describe the impedance that a speaker presents to an amplifier.

Low-Pass Filter: A filter that passes only low frequen- cies below a higher limit.

Main Speakers: Front L & R channel speakers, some- times referred to as satellites.

Main-In:A line-level RCA/XLR power amplifier input on

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NHT Powered Subwoofers owner manual Satisfaction, Glossary

Powered Subwoofers specifications

NHT (New Technology HiFi) powered subwoofers are renowned for their ability to provide deep, rich bass that complements any audio setup. As part of a complete home theater or music system, NHT subwoofers are designed to deliver precise sound reproduction with minimal distortion, enhancing overall listening experiences.

One of the notable features of NHT powered subwoofers is their built-in amplification. Unlike passive subwoofers that require an external amplifier, NHT subwoofers come equipped with high-quality, integrated amplifiers that are specifically tuned to match the driver components. This ensures optimal performance and efficient power usage, eliminating the need for additional equipment and simplifying setup.

NHT utilizes advanced driver technology in its subwoofers. The proprietary woofers are engineered for exceptional linearity and dynamic range, providing deep bass frequencies while remaining clear and undistorted even at higher volumes. This attention to detail in driver design allows NHT subwoofers to reproduce low-end frequencies with incredible accuracy, making them ideal for both music and cinematic soundtracks.

Another critical aspect of NHT powered subwoofers is their versatility in adjusting performance to fit individual preferences and room acoustics. Many models feature adjustable volume controls, phase controls, and low-pass filters. This allows users to customize the sound output to match the characteristics of their listening environment, whether it’s a small room or a larger home theater setup.

NHT subwoofers are also designed with aesthetic considerations in mind. They typically feature sleek, modern finishes that integrate seamlessly into various home decor styles. This design philosophy ensures that consumers do not have to compromise on aesthetics while enjoying high-quality audio performance.

Connectivity options are extensive in NHT powered subwoofers, accommodating various setups. They often include both line-level RCA inputs for traditional audio sources and high-level speaker inputs for connection to home theater receivers. This flexibility enhances their compatibility with a range of audio components.

Overall, NHT powered subwoofers embody a blend of innovative technology, user-friendly features, and aesthetic appeal. They offer music and movie enthusiasts the powerful bass response needed for immersive audio experiences, making them a solid choice for anyone looking to enhance their sound systems with superior low-frequency performance. With their emphasis on quality and performance, NHT subwoofers continue to be a popular selection among audiophiles and home theater enthusiasts alike.