4.Connect the other end of the loudspeaker wires to the home theater receiver (or amplifier) in the same way.

5.Turn on the home theater receiver and calibrate all loudspeakers in the system according to the receiver manufacturer’s

instructions.

Figure 5. Connecting loudspeaker wires to the ProFX terminals.

CHECKING LOUDSPEAKER PHASE

Speaker wire has two conductors. On both your loudspeaker and amplifier, one conductor is attached to the negative (–) terminals, while the other is attached to the positive (+) terminals. Usually, the wire is marked for your convenience, but the marking can be done in the following different ways:

■Stripe on one wire

■Ribbed area you can feel on one conductor

■Different colors of metal wire on each conductor

■Fabric strand or string wound into one of the conductors

Of course, there are some wires that appear completely identical. So be careful, or you might make a connection mistake. If you do, one loudspeaker will be playing “out-of-phase” with the other loudspeaker. A pair of out-of-phase loudspeakers works against each other, and the sound of the two playing together will be lacking in bass and sound “phasey.” If you suspect the sound is not right, and you cannot see any markings on the wire, try this simple test:

1.Stand halfway between the loudspeakers.

2.Play some music with the amplifier or radio set to Mono.

3.Listen to the richness of the bass and the loudness of the sound.

4.Turn off the amplifier and reverse the connections on one amplifier channel only.

5.Repeat the listening test with the same volume control setting. When the sound has a richer bass and is slightly louder, the loudspeakers are working together or “in-phase.”

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Niles Audio Pro870FX, Pro770FX manual Instructions, Checking Loudspeaker Phase
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Pro770FX, Pro870FX specifications

Niles Audio is a revered name in the realm of high-performance audio systems, and their Pro870FX and Pro770FX models are prime examples of their commitment to quality and innovation. These in-wall and in-ceiling loudspeakers are engineered to deliver exceptional sound while seamlessly blending into any environment, making them an ideal choice for music enthusiasts and home theater aficionados alike.

The Pro870FX features an 8-inch woofer and a proprietary 1-inch tweeter that together create a rich, immersive soundstage. One of its standout features is the revolutionary rotating tweeter design, allowing for precise sound directional control. This feature is particularly beneficial in larger rooms or spaces with varying acoustics, enabling users to tailor their listening experience to suit their specific environment.

On the other hand, the Pro770FX model packs a punch with its 7-inch woofer paired with the same advanced 1-inch tweeter technology found in the Pro870FX. While slightly smaller, the Pro770FX does not compromise on audio quality or performance. With impressive power handling capabilities and an adjustable high-frequency driver, it is designed to fill rooms with clear, balanced sound.

Both models utilize a unique ported enclosure design, which enhances bass response and minimizes distortions, ensuring that every note is delivered with clarity and precision. Their robust build quality promises durability, while the innovative design makes installation straightforward. Features like the integrated dog leg clamps help secure the speakers in place, providing peace of mind for DIY enthusiasts and professionals alike.

Moreover, both the Pro870FX and Pro770FX are equipped with a paintable grille, allowing users to customize the appearance of their speakers to match the decor of their homes. This characteristic underscores Niles Audio’s focus on aesthetics without sacrificing performance.

In conclusion, Niles Audio's Pro870FX and Pro770FX models epitomize a blend of advanced audio technology and thoughtful design. Their impressive specifications, ease of installation, and flexible aesthetic options make them a fantastic choice for anyone looking to enhance their audio experience in a discreet yet powerful manner. With Niles Audio, quality sound is always an achievable goal, making these speakers a worthy investment for any audio setup.
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