User ’s Model Manual SW10 Powered ll SW12 Subwoofer
IMPORTANT SAFETY INSTRUCTIONS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER SERVICEABLE PARTS INSIDE. REFER TO QUALIFIED SERVICE PERSONNEL. The lightning flash with the arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
Thank you for your purchase of the NHT SW10 ll or SW12 powered subwoofer. Like all NHT loudspeakers, the SW10 ll and SW12's development has been guided by the study of human hearing, it’s design rigorously tested, and its components optimized to deliver clean, clear musical sound.
is uneven. Some frequencies will sound exaggerated relative to others, or the subwoofer will sound thin and lack impact. The Boundary EQ control allows you to compensate for the effects of room boundaries on the frequency response of the subwoofer. Adjusting the control enables you to achieve smooth low frequency output from the subwoofer regardless of its location in your room. The following diagrams shown in Fig. 1 show the correlation between subwoofer placement and Boundary EQ.
9 8 7 4 3 Line Input LFE Low Pass Filter In L Out R 40Hz 180Hz Power Mode Hi Level Input Volume Max Min Phase Boundary On 180 Auto 0 +3dB 5 0 + L - - R -3dB 6 1 + Green - On Amber - Standby Red - Protect On Power Powered Subwoofer Off 2 10 11 T3.0AL 250V For 115 V T2.
• Preamps with Line Out jacks: connect one pair of Line Out cables to your main amp to power your main L & R speakers, and a second pair to the SW10II OR SW12 LINE LEVEL INPUT. If your preamp has only one pair of Line Out jacks, you can use a pair of "Y" connector cords, available through your NHT dealer.
The frequency chart below lists some terms commonly used to describe different bands of the frequency spectrum. Listen to your system and make adjustments to achieve a seamless blend between your main speakers and the SW10 ll or SW12. Four common problems are outlined below. Follow the flow chart to correct these. See the glossary for any terms you are unfamiliar with.
Operation We recommend that the SW10 ll or SW12 power be left on, which will allow the built-in Auto Mode feature to disable the subwoofer when not in use. Every speaker, has limits, and it's important to listen for them. Speaker damage most often results not from brief loud musical peaks, but from sustained high volume levels in some or all frequencies. For this reason, extreme volume settings and excessive bass, treble or equalizer boosts are not recommended.
Glossary the back of a receiver, integrated amplifier or power amplifier. Active: Uses electrical power. Midrange: The frequency span in the middle of the audio Amplifier: An electronic device that increases the cur- range, roughly 180Hz - 3000Hz. Also used to describe rent and/or voltage of a signal, providing power to the the driver that reproduces these frequencies. loudspeakers (i.e. power amplifier, integrated amplifier, Ohm: A unit of electrical resistance. That which opposes receiver).
S p e c i f i c a t i o n s All Super Series products are sonically matched for seamless integration into multichannel systems.
