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NHT SA-3 - page 1
SA-3 Subwoofer Amplifier Now Hear This 6400 Goodyear Road Benicia, CA 94510 800-NHT -9993 OWNER’S MANUAL ...
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NHT SA-3 - page 2
1. READ INSTRUCTIONS - All safety and operating instructions should be read before the appliance is operated. 2. RET AIN INSTRUCTIONS - Safety and operating instructions should be ret ained for future reference. 3. HEED W ARNINGS - All warnings on the appliance and in operating instructions should be adhered to. 4. FOLLOW INSTRUCTIONS - All operati ...
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NHT SA-3 - page 3
Thank you for your purchase of the NHT SA-3 monaural subwoofer amplifier . Please take a few moments to read through this Owner ’s Manual prior to inst alling your new amplifier and/or subwoofer system. The information provided can help you to obt ain maximum performance from your audio system. For your convenience, a glossary at the end of this ...
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NHT SA-3 - page 4
Design NHT product s are designed to deliver refined, musical sound from attractive and affordable p ackages. Our effort s 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. The NHT SA-3 Subwoofe ...
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NHT SA-3 - page 5
3 (A) Power Switch - T urns the unit on and off (B) Power / St atus Light - Tri-color LED: Green (On), Orange (S tandby), Red (Protect) (C) V olume Control - Adjusts the loudness of the subwoofer independently of the main speakers (D) Subwoofer Output T erminal - 5-way binding posts for connection to the subwoofer (E) High-Pass Filter (High Pass Fc ...
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NHT SA-3 - page 6
General Connections Caution: Prior to connecting the SA-3 to your system, it is important that all AC power connections to associated components (receivers, amplifiers, pre-amplifiers, processors, etc.) are either unplugged or turned off. Do not plug in or connect the SA-3 to AC power until all connections have been made. The SA-3 subwoofer amp ...
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NHT SA-3 - page 7
phase settings on the same track. Do not attempt to evaluate the best sound while standing above the subwoofer or amplifier , as the sound at the listening position will be significantly different. Subwoofer V olume Control The SA-3’s front p anel VOLUME CONTROL allows you to adjust the volume of the subwoofer relative to the rest of the syst ...
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NHT SA-3 - page 8
This method of connection allows your main speakers to receive the full-range audio signal (no high-pass filtering), and the subwoofer to be utilized for low bass extension only . 1) Y our L & R speakers are connected directly from your amplifier / receiver . 2) If you have a receiver with “Pre-Out” (or “Line Out”) jacks but no “Main- ...
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NHT SA-3 - page 9
4) Connect the SA-3 SUBWOOFER OUTPUT to the SW3S input terminals with speaker cable. This method allows your main speakers to receive a high-pass filtered signal (not full range), and the subwoofer to be utilized for low- to mid-bass reproduction. The full-range line-level signal coming from the receiver’s “Pre-Out” passes through the SA-3’ ...
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NHT SA-3 - page 10
Fine T uning the Subwoofer The frequency chart below lists some terms commonly used to describe dif ferent 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 im portant bass tuning functions you will control are the LOW-P AS ...
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NHT SA-3 - page 11
The SA-3 and Biamplification All NHT tower loudspeakers are designed with dual set s of binding posts to allow for biamplification. Biamplification is the use of two sep- arate amplifiers, one to power the low frequency (subwoofer) drivers and one to power the upper frequency (midrange / tweeter) drivers. The advantages of biamplification inclu ...
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NHT SA-3 - page 12
This connection method routes the full-range line-level signal from the preamplifier through the SA-3, which passes on a high-pass filtered signal to the main amplifier and powers the subwoofer sections of the speakers directly with a low-pass filtered signal. Do not use the receiver ’s “Subwoofer Out” jacks to connect the SA-3, as this signa ...
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NHT SA-3 - page 13
This connection method results in sending a full-range line-level signal to both the main amplifier and the SA-3. If you have a separate preamplifier that features two sets of line output s, each set is connected to one amplifier . If the preamplifier features only one set of line outputs, use “Y”-adaptors to split the signal. If you have a rec ...
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NHT SA-3 - page 14
Operation The SA-3 was designed to handle a wide range of listening levels, but every component has limits. It is import ant 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 cap acity , and the vo ...
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NHT SA-3 - page 15
Glossary of T erms 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). Bass: The range of audio frequencies below 160Hz, characterized by low pitch. Crossover: An electronic circuit that divides an au ...
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NHT SA-3 - page 16
W arranty (V alid Only in the U.S.A.) W arranty Period: For the period of 5 years for parts and 5 years for labor for loudspeaker product s and 1 year for part s and 1 year for labor for electronic components from date of original purchase (the warranty period) from an authorized NHT dealer , NHT warrant s that if our product fails to function prop ...
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