Manuel d'utilisation / d'entretien du produit SA-3 du fabricant NHT
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SA-3 Subwoofer Amplifier Now Hear This 6400 Goodyear Road Benicia, CA 94510 800-NHT -9993 OWNER’S MANUAL .
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.
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.
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.
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 inde.
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.
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.
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 .
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.
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 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.
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.
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.
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 .
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.
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 co.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté NHT SA-3 c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du NHT SA-3 - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation NHT SA-3, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le NHT SA-3 va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le NHT SA-3, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du NHT SA-3.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le NHT SA-3. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei NHT SA-3 ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
