NHT SA-3 Owner's Manual
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NHT SA-3 Owner's Manual

Nht amplifier sa-3 owner's manual
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SA-3
Subwoofer Amplifier
OWNER'S MANUAL
Now Hear This
6400 Goodyear Road
Benicia, CA 94510
800-NHT-9993

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  • Page 1  SA-3 Subwoofer Amplifier OWNER’S MANUAL Now Hear This 6400 Goodyear Road Benicia, CA 94510 800-NHT-9993...

  • Page 2: Important Safety Instructions

    18. SERVICING - Do not attempt to service this product yourself, as opening or removing covers may expose you to dangerous voltage or other hazards. Refer all servicing to qualified service personnel. For service warranty information call the NHT Hotline number: 1-800-NHT-9993.
  • Page 3 If you have questions or require assistance at any time during the installation or operation of your new amplifier/powered subwoofer system, please call your local NHT dealer or our Toll-Free Customer Service Hotline at: Please retain the SA-3 packaging to protect the amplifier in the event that you move or transport it. 1-800-NHT 9993...

  • Page 4: Amplifier Specifications

    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.

  • Page 5: Front And Back Panel Diagrams

    Front and Back Panel Diagrams (A) Power Switch - Turns the unit on and off (B) Power / Status Light - Tri-color LED: Green (On), Orange (Standby), Red (Protect) (C) Volume Control - Adjusts the loudness of the subwoofer independently of the main speakers (D) Subwoofer Output Terminal - 5-way binding posts for connection to the subwoofer (E) High-Pass Filter (High Pass Fc) -...
  • Page 6 SA-3 and the subwoofer, with heavier special purpose cable used for longer runs. For specialty cable considerations, consult your local authorized NHT retailer. If you are using a single SA-3 to drive two SW3S subwoofers in parallel, it is preferable to use similar lengths of speaker cable for connections to each subwoofer.

  • Page 7: Subwoofer Volume Control

    If you are using a receiver with “Pre-Out”, “Line Out” or “Subwoofer Out” jacks but no “Main-In” jacks, you may use Method #1. d) If you are using a receiver with no “Pre-Out”, “Line Out” or “Subwoofer Out” jacks, there is no way to connect the SA-3 to your sys-...
  • Page 8 3) Many integrated amplifiers and receivers feature a “Subwoofer Out” jack. If your receiver’s “Subwoofer Out” consists of a single RCA jack, you may plug it into either the left or right LINE IN jack on the SA-3. Alternately, you may utilize a “Y”-splitter to split the line-level signal into both jacks.
  • Page 9 2a) If you have a receiver with “Pre-Out”and “Main-In” jacks, patch in the SA-3 between these. With an RCA interconnect cable, connect the receiver’s “Pre-Out” to the SA-3’s LINE IN. Connect a second RCA interconnect cable from the SA-3’s LINE OUT back to the receiver’s “Main-In.”...
  • Page 10 Fine Tuning the Subwoofer The frequency chart below lists some terms commonly used to describe different bands of the frequency spectrum. The key to good subwoofer / speaker integration is repeated listening, followed by small re-adjustments of the subwoofer controls. The most important bass tuning functions you will control are the LOW-PASS FILTER, followed by the VOLUME CONTROL settings and then PHASE SELECTOR.
  • Page 11 Towers may be biamplified monaurally using a single SA-3 and a full-range main (stereo) amplifier, or biamplified in stereo using two SA-3’s and a main amplifier. Additionally, the towers may be biamplified either in series or in parallel. Wired in series (Method #1), the main amplifier receives a filtered line-level signal via the high-pass output from the SA-3.

  • Page 12: Biamplification Method

    Do not use the receiver’s “Subwoofer Out” jacks to connect the SA-3, as this signal is likely to be different from the full-range L & R channel signal.
  • Page 13 If you have a receiver with “Pre-Out” jacks but no “Main-In” jacks, you can use the “Pre-Out” jacks to connect the SA-3, without having to route the signal back to the receiver. Do not use the receiver’s “Subwoofer Out” jacks to connect the SA-3, as this signal is likely to be different from the full-range L &...

  • Page 14: Operation

    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.
  • Page 15 Glossary of Terms A c t i v e : Uses electrical power. A m p l i f i e r : An electronic device that increases the current of a signal, providing power to the loudspeakers (i.e. power amplifier, integrated amplifier, receiver).

  • Page 16: Warranty

    Altered, defaced or removed serial numbers void this warranty. Your Rights: The liability of NHT will be limited to the purchase price of the product, and NHT will not be liable for incidental or consequential damages. NHT limits its obligations under any implied war- ranties under state laws to a period not exceeding the warranty period.

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