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OPERATION

USING THE T 175 –Setup MENU

ENHANCED BASS

When the subwoofer is set to ON and one or more speakers are set to “Large”, Enhanced Bass is also available. Normally, with speakers set to “Large” the subwoofer is not active. The Enhanced Bass option allows full range operation of the speakers with the additional bass contribution of the subwoofer. This feature is particularly useful when one wants to experience maximum bass output. Please note that due to acoustic cancellation effects, the bass response may be uneven when using this setting.

You can set Subwoofer to “On” even with “Large” front speakers, in which case bass content from any channels set to “Small” will be routed to both the subwoofer and to the front speakers; LFE-channel signal will pass only to the sub. In most subwoofer-equipped systems, setting front speakers to “Small” is usually the better option.

All the speakers’ low frequency content can be directly adjusted within the range 40Hz to 200Hz.

NOTE

The configurations set forth at “Speaker Setup” are carried over whenever it is enabled during A/V

Preset setting. Please see also the section “A/V PRESETS” for reference.

SPEAKER LEVELS

Adjusting the relative balance of your system’s loudspeakers ensures that surround-sound recordings, whether music or film, will present the balance of effects, music, and dialog that the artists intended. Additionally, if your system incorporates a subwoofer it establishes a correct relationship between the volume of the subwoofer and the other speakers, and thus of low-frequencies (bass) to other sonic elements.

USING AN SPL METER

It is quite practical to perform the T 175 level setup routines “by ear,” and careful work will produce acceptably accurate results. However, the use of an inexpensive sound-pressure level (SPL) meter, such as Radio Shack part number 33-2050, makes this task easier, more accurate and more repeatable. Ownership of such a meter could prove a valuable audio tool. Your NAD audio specialist may be able to help you with temporary use of a meter.

The SPL meter should be placed at the primary listening position, at approximately the height of the seated listener’s head. A tripod is helpful but with a little duct tape almost anything — a pole lamp, music-stand, or ladder-backed chair, for example — can do as well. Just be sure that no large acoustically reflective surfaces obstruct or are near the microphone element.

Orient the meter with its microphone (usually at one end) pointing straight up toward the ceiling (not toward the speakers) and ensure that “C” weighting scale is selected. Set the meter to display 75 dB SPL. On Radio Shack meters, this necessitates either setting the meter to its 80 dB range and taking your readings at the -5 point or selecting the 70 dB range and reading at the +5 point.

SETTING SPEAKER LEVELS AT TEST MODE

While at “Speaker Levels” menu, press the HTRC 1 remote’s “Test” key activating the T 175’s Speaker Levels balancing test signal . You will hear a “surf” sound as you step through your speakers (“test” appears to the right side of the current speaker), beginning with the Front Left. If you do not hear the test signal, check your speaker connections or your “Speaker Setup” menu settings.

Use the remote’s [] keys to adjust the loudness of the noise output from the currently playing channel to the required level (it’s usually simplest to begin with the Front Left). As you cycle the test signal around the speakers, the OSD will highlight the currently playing channel. The “level offset” reading on the right will change by 1 dB increments; ±12 dB adjustment is available. Press ‘ENTER’ to adjust the next speaker.

NOTE

If you are balancing levels “by ear”, choose one speaker—usually the center— as a reference and adjust each of the others in turn to “sound as loud” as the reference. Be sure that you remain in the primary listening position while balancing all channels.

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NAD T175 owner manual Enhanced Bass, Using AN SPL Meter, Setting Speaker Levels AT Test Mode

T175 specifications

The NAD T175 is a versatile and high-performance AV receiver that brings advanced audio and video technology to home theaters. Renowned for its dynamic sound performance and user-friendly features, the T175 stands out among its peers in the NAD product lineup.

One of the key features of the NAD T175 is its ability to deliver outstanding audio quality. It is designed with NAD’s proprietary technology, which enhances sound reproduction and clarity. The T175 utilizes a high-quality DAC (Digital-to-Analog Converter) that ensures audio signals are accurately converted, providing rich and detailed soundscapes. This is crucial for audiophiles who seek a remarkable listening experience, whether they are playing music or watching movies.

The T175 supports a wide array of audio formats, including Dolby Digital and DTS, making it compatible with most modern audio sources. It features a multi-channel outputs that allow users to connect a full array of speakers for a true surround sound experience. Additionally, the inclusion of NAD’s proprietary MDC (Modular Design Construction) technology allows users to upgrade the unit with new modules, providing future-proofing capabilities as technology continues to evolve.

Video performance is equally impressive, as the NAD T175 supports high-definition video formats and resolutions, including 4K pass-through. This is crucial for users with modern 4K displays who want to enjoy stunning visuals without compromising on quality. The T175's video circuitry is designed to provide optimal picture quality, ensuring that the image is both sharp and vivid.

The design of the T175 is another highlight, featuring a sleek and modern aesthetic that will easily fit into any home entertainment setup. It offers a user-friendly interface, complete with an intuitive remote control. The front panel has minimalistic controls and a clear display, allowing for easy navigation and setup.

Connectivity options are abundant on the NAD T175, including HDMI, optical, coaxial, and auxiliary inputs, making it compatible with a variety of devices, from gaming consoles to streaming devices. Furthermore, it features Ethernet and USB ports for network connectivity and playback of digital media.

In summary, the NAD T175 AV receiver is a powerful combination of advanced technology, aesthetic design, and versatile performance. With its excellent audio quality, comprehensive format support, upgradeable components, impressive video capabilities, and user-friendly features, the T175 is an outstanding choice for home theater enthusiasts seeking an immersive entertainment experience.