NHT SA-3 „ Operation, „ Maintenance, „ Changing the Line Voltage Setting, „ Changing the Fuse

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„Operation

The SA-3 was designed to handle a wide range of listening levels, but every component has limits. It is important to use common sense and listen for signs of possible distress from the subwoofer. Noticeable distortion or harsh breakup is an indication that either the SA-3 or the subwoofer is running beyond its capacity, and the volume should be decreased. If you feel heat emanating from the front of the woofer, reduce the level immediately. Speaker damage most often occurs from sustained high volume levels, not from transient sounds or brief musical peaks. Excessive boosting of bass, treble, or equalizer controls can worsen the problem and is not recommended.

„Maintenance

Your SA-3 subwoofer amplifier has been designed for years of trouble-free operation and required minimal maintenance under normal use. The SA-3 may be cleaned by wiping with a lint-free cloth. Do not expose the SA-3 to direct sunlight, high temperatures or moisture. In the event that service is required, do not open the SA-3. Refer the unit to a qualified service technician.

„Changing the Line Voltage Setting

In the event that it is necessary to change the line voltage setting, begin by turning the power switch to the OFF position. Remove all connections from the subwoofer, including the detachable power cord. Locate the two screws holding the cover plate over the volt- age selector switch, and loosen both screws two turns. DO NOT REMOVE THE SCREWS! Rotate the cover plate 45 degrees to gain access to the switch. Using a flat blade screwdriver, slide the switch to the correct position. Use the 115 VAC position for 110 to 120 VAC, and the 230 VAC position for 220 to 240 VAC. Slide the cover plate back into position. Tighten both screws. Next, you will need to replace the fuse (see “Changing the Fuse”).

„Changing the Fuse

Always replace the fuse with one of the exact same specifications. For systems operating in the 115 volt setting, use only 5 x 20 mm, T4A, 250-volt slow-blow fuses. For systems operating in the 230 volt setting, use only 5 x 20 mm, T2A, 250-volt slow-blow fuses.

The SA-3 subwoofer amplifier has a user-serviceable fuse. To replace or change the fuse, begin by turning the power to the OFF position and removing the detachable power cord from the amplifier. Next, remove the fuse holder cover from the power cord socket with a flat blade screwdriver. Remove the fuse from the holder and replace it with the appropriate type. For 110 to 120 VAC, use a 5mm x 20mm T4A 250V slow-blow fuse. For 220 to 240 VAC, use a 5mm x 20mm T2A 250V slow-blow fuse. Reinstall the fuse holder. Replace the power cord with the appropriate type designed for your wall outlet. Reconnect the power cord.

„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.

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Contents SA-3 Now Hear ThisImportant Safety Instructions Table of Contents · Frequency Response 10Hz 150Hz +/-3dB · Weight 24 lbs„ Placement „ DesignFront and Back Panel Diagrams „ Low-Pass Filter Low Pass Fc 100Hz to 150Hz 80Hz to 100Hz 65Hz to 80Hz „ Subwoofer Phase„ General Connections „ High-Pass Filter High Pass Fc Connection Method #2 Only„ The SA-3 and SW3S The SW3P Powered Subwoofer System „ Subwoofer Volume Control3 P C o n n e c t i o n M e t h o d # Use ifSW3P Connection Method #2 Solution „ Fine Tuning the Subwoofer„ The SA-3 and Biamplification „ Recommended biamplification settings„ Biamplification Bass Tuning Methods Biamplification Method #1 A m p l i f i c a t i o n M e t h o d # „ Troubleshooting „ Maintenance„ Changing the Line Voltage Setting „ Operation„ Glossary of Terms Warranty

SA-3 specifications

The NHT SA-3 is a notable entry in the world of high-performance audio speakers, recognized for its impressive design, advanced technologies, and exceptional sound quality. Targeted primarily towards audiophiles and serious music enthusiasts, the SA-3 speaker harnesses innovative engineering to deliver an unmatched listening experience.

One of the main features of the NHT SA-3 is its unique cabinet design. Constructed using high-quality materials, the cabinet is designed to minimize resonances and unwanted vibrations, ensuring that sound reproduction remains pure and undistorted. The design philosophy behind the SA-3 emphasizes clean lines and aesthetic appeal, making it a suitable addition to any home or studio setting.

Another defining characteristic of the SA-3 is its driver configuration. The speaker utilizes a sophisticated woofer and tweeter setup, which combines a robust 5.25-inch polypropylene cone woofer with a highly sensitive 1-inch silk dome tweeter. This combination allows the NHT SA-3 to produce a wide frequency range, from deep, impactful bass to crisp, clear highs, making it versatile for various music genres and audio content.

In terms of technology, the NHT SA-3 integrates advanced crossover circuits that optimize the performance of its drivers. These crossovers ensure seamless transitions between the woofer and tweeter, resulting in an accurate and coherent soundstage. Additionally, the speaker incorporates high-quality binding posts, allowing for secure connections and compatibility with a variety of amplifiers and audio equipment.

The NHT SA-3 also excels in its power handling capabilities. With a recommended amplifier power range, the speaker can comfortably handle a substantial amount of power without compromising on performance, making it suitable for both casual listening and more demanding audio applications.

Moreover, the SA-3 has been engineered for both wired and wireless connectivity, allowing it to integrate seamlessly into modern audio setups. This flexibility ensures that users can enjoy their favorite music from various sources while retaining high sound quality.

Overall, the NHT SA-3 stands out in its class for its exceptional clarity, dynamic range, and aesthetic appeal. With its combination of advanced technologies, premium materials, and thoughtful design, the NHT SA-3 is a compelling choice for anyone looking to enhance their audio experience. Whether used in a home theater or a music studio, this speaker promises to deliver performance that will satisfy even the most discerning listeners.
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