NHT SA-2 owner manual „ Troubleshooting, „ Glossary of Terms

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„Troubleshooting

If the amplifier fails to operate when the Power Switch is turned on, check the power cord and all the input and output connections thoroughly. If the front panel status LED is red, the unit is in “protect” mode. This could be caused by incorrect wiring, short circuits, or excessive volume. Turn off the Power Switch on the front panel for two or more seconds to reset. Double check all speaker cables to be sure that no small strands are extruding. If the front panel LED indicator fails to illuminate, it is possible that mis-wiring or an electrical power surge has caused the protection fuse to blow. It must be replaced with one of correct type and value. Contact your local Authorized NHT Dealer or NHT immediately for assistance.

„Glossary of Terms

Active: Uses electrical power.

Amplifier: An electronic device that increases the current of a signal, providing power to the loudspeakers (i.e. power amplifier, integrated amplifier, receiver).

Barrier Strip: A row of speaker connectors with screw-activated locking mechanisms.

Bass: The range of audio frequencies below 160Hz, characterized by low pitch.

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

Distortion: Any deviation from the original signal, caused by any type of equipment.

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

Dynamics: Variations in loudness of sound.

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

Full Range: A signal encompassing the entire frequency spectrum, not filtered above or below a certain frequency.

Hertz (Hz): A unit of frequency equal to one cycle per second, used to measure the frequency of a signal or sound.

High-Pass Filter: A filter that passes only frequencies above a certain lower limit; electronically removes low frequen- cies from a full range signal.

Impedance: A measure of the total opposition to current flow in an alternating current circuit, described in ohms.

In Phase: The polarity of an audio signal when connected as follows: (+) to (+) and (-) to (-).

Integrated Amplifier: Has 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.

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

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

Low-Pass Filter: A filter that passes only frequencies below a certain upper limit; electronically removes high frequen- cies from a full range signal.

Main Speakers: Front L & R channel speakers, sometimes referred to as satellites.

Midrange: The frequency span of the middle of the audio range, roughly 160Hz - 1300Hz. Also used to describe the driver which reproduces these frequencies.

Ohm: A unit of electrical resistance; that which opposes an electric current in a conductor. In audio, a measure of the load presented by a device to an electrical source.

Out-of-Phase:The polarity of an audio signal when connected as follows: (+) to (-) and (-) to (+).

Passive: Uses no electrical power.

Phase: An expression of the relative polarities of two identical signals.

Power Handling: The ability of a loudspeaker to operate without distortion when given varying amounts of wattage.

Preamplifier: An electronic device that selects sources and passes line-level signal to amplifier.

Receiver: Has preamplifier, amplifier and tuner built into one chassis.

Satellite: Front L & R speakers when used with a subwoofer. Referred to as “main speakers”.

Sensitivity (same as efficiency): A measure of how much of the input electrical energy is converted into sound ener- gy, measured in decibels.

Signal: The series of continually changing electrical voltages that correspond to variations in the loudness of the origi- nal sound.

Speaker-Level Connection: The connection between a loudspeaker and an amplifier.

Subwoofer: A driver designed to operate over the low bass portion of the audio range. Also refers to a system con- sisting of a woofer and its enclosure which are physically separate from the upper range loudspeakers.

Surround Speakers: Speakers located in the side or rear for surround channel effects.

Treble: The upper part of the frequency spectrum, consisting of frequencies above about 1300Hz.

Tweeter: A small driver designed to reproduce high frequencies.

Watt: A measure of electrical power, combining the voltage with the electrical current required to drive the loudspeaker.

Weight: Low frequencies below 50Hz.

Woofer: A driver designed to operate over the bass portion of the audio range.

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Contents SA-2 Now Hear ThisImportant Safety Instructions Table of Contents · Frequency Response 25Hz 150Hz +/-3dB · Weight 15 lbs„ Placement „ DesignFront and Back Panel Diagram „ General Connections „ Low-Pass Filter Subwoofer Fc„ High-Pass Filter Satellite Fc Connection Method #2 Only „ The SA-2 and SW2Si The SW2Pi Powered Subwoofer System „ Subwoofer Volume Control2 P i C o n n e c t i o n M e t h o d # Use ifSW2Pi Connection Method #2 SW2Pi Connection Method #3 SW2Pi Connection Method #4 Solution „ Fine Tuning the Subwoofer„ Dual Subwoofer Connection Method „ The SA-2 and BiamplificationBiamplification Method #1 A m p l i f i c a t i o n M e t h o d # Biamplification Method #3 „ Maintenance „ Recommended biamplification settings„ Biamplification Bass Tuning Methods „ Changing the Line Voltage Setting„ Troubleshooting „ Glossary of TermsWarranty

SA-2 specifications

The NHT SA-2 is a remarkable achievement in the world of audio engineering, representing a synthesis of innovative design, advanced technology, and exceptional acoustic performance. Launched by NHT (Next High Technology), a company renowned for its commitment to high-fidelity audio reproduction, the SA-2 stands out for both its aesthetic appeal and high-performance specifications.

One of the standout features of the NHT SA-2 is its compact design, making it suitable for a variety of listening environments. This speaker is engineered to deliver a full-range sound experience despite its smaller footprint. The SA-2 utilizes a proprietary 5.25-inch woofer that is designed to produce deep and rich bass tones, complemented by a 1-inch silk dome tweeter that excels in handling high frequencies. This combination allows the SA-2 to reproduce a broad dynamic range, ensuring that listeners can experience their music with clarity and detail.

In terms of technology, the NHT SA-2 leverages advanced materials and construction techniques to enhance performance. The woofer cone is formed from a specially engineered composite material that offers both rigidity and lightweight properties. This helps to minimize distortion and ensures that sound waves are produced accurately. Additionally, the tweeter's silk dome design contributes to a smooth frequency response, reducing harshness and delivering a more natural sound.

Another noteworthy characteristic of the NHT SA-2 is its versatility. It is designed for both two-channel stereo setups and can easily integrate into multi-channel home theater systems. The speaker can be used in various configurations, whether as part of a dedicated music listening space or in a surround sound setup, making it a flexible choice for audiophiles and casual listeners alike.

The SA-2 also benefits from thoughtful engineering. Its rear-firing port enhances bass response, allowing for greater low-frequency extension without requiring excessive cabinet size. This design choice enables it to adapt well in different room environments, further enhancing its usability.

Overall, the NHT SA-2 embodies the core principles of high-quality audio reproduction. With its advanced construction, thoughtful engineering, and versatile application, it is an excellent choice for anyone looking to elevate their listening experience. Whether used for music, movies, or gaming, the NHT SA-2 promises a captivating and immersive sound that delights the senses.
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