Niles Audio cm5at manual Installation Fundamentals, Boundary Effect

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Installation Fundamentals

receiver or amplifier. Niles makes a num- ber of Systems Integration Amplifiers with proprietary features that make them uniquely suited to enhance a good sur- round sound system. Consult your local Niles dealer for more information.

The Boundary Effect

Corners can affect the bass response of the speaker powerfully! This is called the boundary effect. You will emphasize par- ticular bass frequencies and cancel out other bass frequencies when you place speakers close to the wall/ceiling bound- ary or a corner wall boundary. This can make the speaker sound excessively boomy and inaccurate to some listeners, while to others it just seems like more bass sound. A good rule of thumb is if you always listen to your current pair of speak- ers with the bass turned up, you’ll enjoy corner placement. If you keep your tone controls at neutral, try to keep the speak- ers at least two or three feet from the boundaries of the room.

Installation

Fundamentals

Figure 7

Running the Speaker Wire in New Construction

If you have doubts about whether you are capable of installing a Niles ceiling mount loudspeakers, consult a Niles dealer or professional installer. They have special tools, techniques, and experience to make the impossible possible. The installer can provide you with an estimate before any work is done.

Scheduling and Preparation

Plan to schedule the speaker wiring after the electrical wiring is finished. That way you can avoid wire routes which could potentially induce hum over the speaker wire. The basic rules are:

Never run speaker wire through the same hole as an electrical cable.

Never run speaker wire into the same J-box as electrical cable.

Avoid running the speaker wire beside the electrical cable. Keep your speaker cable at a distance of at least 18"-22"

from any electrical power cable. Side-by-side wiring is unavoidable in par- ticular spots in every house, just move the speaker wire route away as soon as possi- ble. If construction forces a side by side run for more than ten feet, install metal conduit or shielded speaker wire. Low- voltage wires such as doorbells, inter- coms, telephone, security, or television cannot cause interference or hum on your speaker wires, so you can safely run all of them at the same time, through the same holes, side-by-side.

Before you drill any holes, mount the speaker brackets in the desired speaker locations and mount p-rings or open backed J-boxes where the in-wall volume controls and stereo equipment will be.

Safety First!

Wear gloves, safety goggles and head pro-

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Contents CM5AT Table of Contents Introduction Or 8 ohm Selectable Impedance Features and BenefitsEasy Installation MicroPerf GrillesRecommended Amplifier Power Installation ConsiderationsIncorporating a Local Volume Control Incorporating Remote Control Installation ConsiderationsSpeaker Wire Insulation Behind The SpeakerPlacement for Critical Listening Speaker PlacementIntroduction Placement for Varying Listening Positions Placement for Home Theater Rear ApplicationsVarying Listening Position Surround Sound Running the Speaker Wire in New Construction Installation FundamentalsBoundary Effect Concealing Speaker Wire Existing Walls DrillingSpeaker Location Volume Control Stereo Installation Fundamentals Insulating the Wall Cavity Installation in New ConstructionConstruction Mounting The New Construction BracketInstallation in Existing Construction See FigureFinal Installation in New or Existing Construction Final Installation in New or Existing ConstructionSpeaker Phase Painting the SpeakersOperation Listening at Higher VolumesCleaning OperationsSpecifications SpecificationsCM8AT Warranty Registration Card Detach Here Limited Warranty Limited WarrantyNiles Audio Corporation