Operation

SET CONTROLS...

POWER ON...

ADJUST VOLUME...

CROSSOVER FREQUENCY

CONTROL...

ROOM PLACEMENT...

1.Initially set the subwoofer’s Volume control ❻ (Fig. 2) to the minimum position.

2.Initially set the subwoofer’s Crossover Frequency control ❸ (Fig. 2) to 12 o’clock.

3.Set the subwoofer’s Phase switch ❺ (Fig. 2) to the “NOM” position (for normal polarity) (except BU-80).

4.Turn on your entire audio system and play any music source.

5.Turn the Volume control ❻ (Fig. 2) to its mid position. If no sound emanates from the subwoofer, check the AC line cord and input cables. Are the connectors on the cables making proper contact? Is the AC plug connected to a “live” receptacle?

6.Set the overall volume control of the preamplifier or stereo to a comfortable level. Adjust the subwoofer’s Volume control ❻ (Fig. 2) until you obtain a pleasing blend of bass. Bass response should not overpower the room but rather be adjusted so there is a harmonious blend across the entire musical range. Many users have a tendency to set the subwoofer volume too loud following the belief that a subwoofer is there to produce lots of bass. This is not entirely true. A subwoofer is there to enhance bass, extending the response of the entire system so the bass can be felt as well as heard. However, overall balance must be maintained; otherwise, the music will not sound natural. An experienced listener will set the volume of the subwoofer so its impact on bass response is always there but is never obtrusive.

7.The Crossover Frequency control ❸ (Fig. 2) sets the high-frequency roll-off, adjustable from 50 to 150Hz. Where you set this control depends on the low-frequency capabilities of your satellite speakers, system placement, and other factors affecting the mid-bass region. Turn the control UP (clockwise) until you feel there is too much mid-bass information (around 100Hz) then back the control down a bit until that area sounds more natural. To hear more low bass, turn the Crossover Frequency control DOWN a bit and the Volume control UP by about the same amount. This will increase low bass while leaving the mid- bass sounding the same as it did before the adjustment. To reduce low bass without changing mid-bass, turn the Crossover Frequency control UP and the Volume control DOWN. Switch the Phase switch between “NOM” and “REV” positions while listening to music. The selection that sounds the best is the correct adjustment for your system.

8.Room placement of the subwoofer is the most critical aspect of its installation. It will be necessary for you to try various locations in your listening room before you choose the final location. Some possible starting points include: behind the right channel satellite speaker, along the back wall between the satellites, along a side wall (but not too close to a corner), or behind a couch or a chair.

In general, the closer the subwoofer is to walls and corners, the greater the effect of low- frequency enhancement. Experiment with the Crossover Frequency and Volume controls in different locations until you are pleased with the result you obtain from your particular application.

12 ◆ BU Series Powered Subwoofers – Owner’s Manual

BU-120, BU-150, BU-80 specifications

The Infinity BU series, which includes models BU-80, BU-150, and BU-120, represents a premium line of massage chairs designed to deliver an exceptional relaxation experience. Each model features innovative technologies and a plethora of characteristics that cater to various user preferences, ensuring effective stress relief and muscle relaxation.

The Infinity BU-80 is an entry-level model that offers a comprehensive massage experience despite its compact design. Its core features include a 3D massage roller system that mimics the hands of a professional massage therapist. The BU-80 is equipped with multiple massage techniques such as kneading, tapping, rolling, and shiatsu, allowing users to customize their sessions. Additionally, it boasts body scanning technology, which intelligently adjusts to the user's body shape and size for a tailored massage experience. The built-in heating function enhances relaxation by soothing tight muscles, while the Bluetooth connectivity allows users to enjoy music during their sessions.

Moving up the line, the Infinity BU-120 incorporates advanced features that elevate its performance. This model offers a wider range of massage techniques, including stretching and air compression therapies that target specific muscle groups. The dual-layered massage rollers provide deeper tissue penetration, ensuring effective relief for users seeking more intensity in their massages. The BU-120 also enhances the user experience with an easy-to-navigate remote control, enabling effortless adjustments during sessions. Furthermore, its design promotes zero gravity positioning, which elevates the legs to reduce pressure on the spine, offering a weightless feel during use.

At the top of the range, the Infinity BU-150 stands out as a high-end model packed with cutting-edge technologies. It features a 4D massage mechanism capable of deeper movements for a more profound experience. The extensive body scan technology in the BU-150 allows for even greater customization, adapting not only to body shape but also to specific pressure preferences. The chair includes multiple auto programs that cater to various needs, from relaxation to pain relief. Users can enjoy foot rollers that provide a rejuvenating experience while a dedicated lumbar support system enhances comfort. As with the other models, the BU-150 includes Bluetooth capabilities, high-quality speakers, and a sleek, modern design that seamlessly fits into any home decor.

In summary, the Infinity BU series, with the BU-80, BU-120, and BU-150 models, offers innovative massage technologies that cater to a wide audience, ensuring every user finds the perfect balance of comfort and therapy tailored to their individual needs.