NHT SubOne i user manual

User manual for the device NHT SubOne i

Device: NHT SubOne i
Category: Speaker
Manufacturer: NHT
Size: 0.25 MB
Added : 9/26/2014
Number of pages: 17
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Summaries

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Abstracts of contents
Summary of the content on the page No. 1

User’s Manual

Model
SubOne i
Powered Subwoofer

Summary of the content on the page No. 2

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.

Summary of the content on the page No. 3

Table of Contents Specifications 2 Diagrams of SubOne i Subwoofer and Controller 3 Placement 4 Four Connection Methods 4 Which connection options are available in my system? 5 Explanation of Features 5 SubOne i Connection Method #1 8 SubOne i Connection Method #2 9 SubOne i Connection Method #3 10 SubOne i Connection Method #4 11 Fine Tuning the Subwoofer 12 Operation 13 Maintenance 13 Troubleshooting 13 Glossary of Terms 13 Warranty Information 15 Thank you for your purchase of the NHT SubOne i

Summary of the content on the page No. 4

SubOne i Specifications · System type: Vented subwoofer with built-in amplifier and outboard controller · Driver complement: 12” long-throw polypropylene woofer ® · Power output: 250 watts mono into 6 ohms, under license from Sunfire Corporation · Frequency response: 25Hz - 180Hz +/-3dB · Distortion: Less than 0.3% at full power · Crossover: Low-pass continuously variable between 40-180Hz, 18dB/octave Selectable high-pass at 50, 75, and 110Hz, 12dB/octave (line-level) Fixed high-pass at 100Hz (8

Summary of the content on the page No. 5

(11) Subwoofer Phase Selector - 2-position selectable phase control for subwoofer. (1) Power Switch - Activates power for subwoofer (12) Low Pass Filter - Continuously variable low pass crossover control. (2) AC Power Input - Power cord receptacle. (13) LFE Input - Line Level RCA Low Frequency Effects input. (3) Subwoofer Input - Input for RCA connector from Controller. (14) Line In - Line-level RCA input connectors. (4) Power Indicator - The light shows green when the system is on, shows red in

Summary of the content on the page No. 6

!! Placement Experimentation is the key to finding the best location for the SubOne i in your listening environment. When possible, place the subwoofer in the same horizontal plane and along the same wall as the main speakes. Low frequencies produce long wavelengths and thus interact with room boundaries significantly. Placing the sub- woofer nearer to a room boundary (walls, corners) will tend to increase its bass output, but may result in “boomy” or “muddy” sound. Conversely, placing the s

Summary of the content on the page No. 7

Methods #2 and #4). The downside is that sending the speakers a full-range signal can make it difficult to inte- grate them with the subwoofer, as their combined low frequency output can cause irregularities (peaks and dips) in the room’s low frequency response. In this case, the subwoofer’s low pass setting should be quite low and used only to fill in the lowest octave. Method #3 is not recommended with large main speakers. 2. If you have small (bookshelf) main speakers... ® 1st Choice: Metho

Summary of the content on the page No. 8

Use of the LFE Input and LFE gain Control (LFE = Low Frequency Effects) If you receiver/processor has a "subwoofer out" or "LFE out" jack, you can connect that jack to the LFE Input on the back of the SubOne i Controller. You can configure your system as follows: (a) This is the recommended method as it the most likely to lead to optimum results for both music and movies. Connect your receiver/processor as shown in the section labeled Connection Method #1. Connect the LFE out- put of your rec

Summary of the content on the page No. 9

about the same frequency you have set the High Pass Filter. For example, if the High Pass Filter sends only signals above 75Hz to your main speakers, begin with the Low Pass Filter set at 75Hz. See the “Fine Tuning” section for further adjustment guidelines. If you are using Connection Method #2 or #4, your main speakers are reproducing the entire frequency range (including bass) and it is advantageous for the subwoofer to reproduce only those frequencies below the rated response of the main s

Summary of the content on the page No. 10

SubOne i Connection Method #1 Connect the SubOne i Controller between a receiver’s “Pre-Out” and “Main-In”, with high-pass filter loop Use if: You wish to send your L & R speakers a high-pass filtered signal and/or LFE signal You have a receiver with “Pre-Out” and “Main-In” jacks You have a separate preamplifier and main amplifier 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

Summary of the content on the page No. 11

SubOne i Connection Method #2 Connect the SubOne i Controller from a receiver / preamplifier’s “Subwoofer (LFE) Out,” “Pre-Out” or “Line Out” with no high-pass filtering Use if: You wish to run your L & R speakers full-range You have a receiver with “Subwoofer (LFE) Out” jacks You have a receiver with “Pre-Out” jacks but no “Main-In” jacks 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

Summary of the content on the page No. 12

SubOne i Connection Method #3 Connect the SubOne i Controller at speaker level from the receiver’s speaker outputs, with fixed high-pass filter Use if: You wish to send your L & R speakers a high-pass filtered signal Your receiver has no “Pre-Out”, “Line Out” or “Subwoofer Out” jacks This method of connection is recommended if you have a receiver with no line level preamplifier output of any sort and you want your L & R speakers to receive a high-pass filtered signal. The SubOne i Controller ma

Summary of the content on the page No. 13

SubOne i Connection Method #4 Connect the SubOne i Controller at speaker level from the receiver’s speaker outputs, with no high-pass filter Use if: You wish to send your L & R speakers a full range signal Your receiver has no “Pre-Out”, “Line Out” or “Subwoofer Out” jacks Your receiver has two sets of speaker output terminals: “Speaker A” and “Speaker B” This method of connection is recommended when you have a receiver with no line level preamplifier output of any sort and you want to run your

Summary of the content on the page No. 14

!! Fine Tuning the Subwoofer The frequency chart below lists some terms commonly used to describe different bands of the frequency spec- trum. 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. Frequency Chart Low Bass Mid Bass Upper Bass Lower Mid Mid

Summary of the content on the page No. 15

!! Operation When the SubOne i is turned on, there will be an audible “pop.” Do not be alarmed! This is inherent to the amplifier design and will not damage the subwoofer or your audio system. We do recommend, however, that the SubOne i’s power is left “on” at all times, allowing its built-in Standby Mode feature to disable the subwoofer when not in use. The SubOne i was designed to handle a wide range of listening levels, but every component has limits. It is important to use common sense a

Summary of the content on the page No. 16

!! Glossary of Terms Active: Uses electrical power. Amplifier: An electronic device that increases the current of a signal, providing power to the loudspeakers (i.e. power amplifier, inte- grated amplifier, receiver). Barrier Strip: A row of speaker connectors with screw-type locking mechanisms. Bass: The range of audio frequencies below 160Hz, characterized by low pitch. Crossover: An electronic circuit that divides an audio signal into different frequency ranges. Distortion: Any deviation from

Summary of the content on the page No. 17

Limited Warranty Valid Only in the U.S.A. Warranty Period For a period of 5 years for parts and 5 years for labor (1 year parts and 90 days labor for electronics) from the date this product is first purchased from an authorized NHT dealer, Now Hear This (NHT) warrants that if it fails to function prop- erly due to a manufacturing defect, despite its being installed and operated according to these instructions and used under normal conditions, it will be either replaced or repaired with new or re


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