Russound In-Ceiling speaker Space Requirements & Impedance Matching, Space And Wall Requirements

Space Requirements & Impedance Matching

SPACE AND WALL REQUIREMENTS

SPACE REQUIREMENTS

Russound Advantage Twist & Tilt speakers require at least 1.4 cubic feet of space behind the speaker for opti- mal performance.

WALL REQUIREMENTS

ACCEPTABLE INSTALLATION SITUATIONS:

*Wallboard/plaster ceilings - The dense, rigid nature of wallboard (or lath and plaster) acts as a superb speaker baffle.

*Suspended ceiling – only if the ceiling tile is rein- forced with wood or particle board

UNACCEPTABLE INSTALLATION SITUATIONS:

*Brick or concrete ceiling where the wallboard or pan- eling is attached to thin furring strips – This type of ceiling can’t provide proper depth (clearance) for the back of the Russound Advantage speakers.

*Locations concealing pipes, heating ducts and AC wiring - These elements can complicate speaker mounting and installation of speaker wire. AC wiring can induce hum caused by close proximity to the speaker.

IMPEDANCE MATCHING FOR AMPLIFIER AND SPEAKERS

Not all amplifiers or receivers can safely operate two sets of speakers at once. If you intend to run your Russound Advantage speakers and your main speakers concurrently, or if you intend to hook up and run two sets of speakers at the same time, it’s important to con- sider both the impedance of the speakers and the capa- bilities of the amplifier or receiver you’re using.

A speaker’s impedance rating indicates the amount of electrical resistance it places against current flowing from a receiver’s outputs. If the total speaker load does not present adequate resistance, the receiver increases its power output. Low-impedance speakers may hamper operations of receivers not designed to deliver large amounts of current to low-impedance

loads. This may lead to greater distortion, and causes the receiver to run hot or activate its protection circuitry.

First, consult the owner’s manual for your amplifier or receiver. It should state the minimum speaker imped- ance during multiple speaker operation. The impedance may also be printed on the back of the amplifier/receiv- er next to the speaker connectors. If you can’t readily determine this information, consult the dealer where you purchased the amplifier or receiver, or call the manufac- turer of the product in question.

The impedance rating for your Russound Advantage Music Series speakers is 8 ohms, and 6 ohms for the Hi-Fi Series. Next, determine the impedance of your other speakers. It may be printed on the back of the speaker near the connection terminals, or you can con- sult the speaker’s owner’s manual. Speaker impedance must be equal to or higher than the amplifier/receiver speaker output impedance rating. For instance, an amplifier/receiver that is rated for two pair of 8 ohm speakers cannot support two pair of 4 ohm speakers.

If the amplifier/receiver is not rated for the speaker con- figuration desired, external volume controls and/or speaker selectors can maintain the impedance levels that will allow your amplifier/receiver to operate safely. Russound makes a complete line of these products, from Impedance-Matching Volume Controls to Impedance-Matching Speaker Selectors. Ask your Russound dealer for details or request a catalog from Russound at 800-638-8055 (U.S. and Canada) or +1-603-659-5170 from outside the U.S.

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