Infinity Primus C 25 Owners Manual
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INFINITY PRIMUS ™ SERIES The Primus series of loudspeakers continues Infinitys longstanding commitment to accurate sound reproduction. Our proprietary Metal Matrix Diaphragm (MMD ™) drivers, precision dividing networks, and r igid, well-braced enclosures combine to deliver uncompromised performance in any stereo or multichannel home theater system. In addition, Primus series speakers are magnetically shielded for safe placement adjacent to a television. UNPACKING THE SPEAKERS If you suspect damage from transit, report it immediately to your dealer. K eep the shipping carton and packing materials for future use. PLACEMENT Stereo Before deciding where to place your Primus speakers, survey your room and think about placement, keeping the following points in mind, using Figure 1 as a guide: - For best results, place the speakers 6'– 8' apart. - Position each speaker so that the tweeter is approximately at ear level. - Generally, bass output will increase as the speaker is moved closer to a wall or corner. - Refer to the Home Theater section if you also plan to use the speakers f or home theater reproduction. F igure 1. Experiment with speaker placement to obtain the best bass level and stereo imaging in your room. Home Theater F or front-channel use, place one speaker on the left and another on the r ight, along either side of the television monitor. Since the speakers are magnetically shielded, you can place them without worrying about the field distorting the TV picture. Fo rr ear-channel use, place Primus bookshelf speakers on bookshelves or stands – or Primus floorstanding speakers on the floor – alongside the listening position. Final placement depends on room acoustics, availability of space, and your listening preference (Figure 2). T he center channel speaker should be placed on top of or directly below the television and aimed toward the listening area. NOTE: An Infinity powered subwoofer will add impact and realism to both music and film soundtracks. Contact your Infinity dealer for recommenda- tions on subwoofer models for your application. F igure 2. This overhead view shows a typical home theater plan. F igure 3. This figure shows an alternate layout, which may be more suitable for some rooms. Couch Left Front Channel Left Surround Channel Right Surround Channel Right Front Channel Center Channel Infinity Subwoofer (optional) Couch Left Front Channel Left Surround Channel Right Surround Channel Right Front Channel Center Channel Infinity Subwoofer (optional) Listening Position Left Channel Right Channel 2 PRIMUS SPEAKER SYSTEMS
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3 PRIMUS SPEAKER SYSTEMS +– Receiver or Amplifier (rear view)Speaker (rear view) – + (one channel shown) RED BLACK F igure 4. This example shows how to connect bare wires to the terminals. W IRING THE SYSTEM IMPORTANT: Make sure all equipment is turned off before making any connections. F or speaker connections, use a minimum #16-gauge speaker wire with polarity coding. The side of the wire with a ridge or other coding is usually considered positive polarity (i.e., +). NOTE: If desired, consult your local Infinity dealer about speaker wire and connection options. T he speakers have coded terminals that accept a variety of wire connec- tors. The most common connection is shown in Figure 4. To ensure proper polarity, connect each +terminal on the back of the amplifier or receiver to the respective +(red) terminal on each speaker, as shown in Figure 5. Connect the –(black) terminals in a similar way. See the owners guides that were included with your amplifier, receiver and television to confirm connection procedures. IMPORTANT: Do not reverse polarities (i.e., + to – or – to +) when making connections. Doing so will cause poor imaging and diminished bass response . F igure 5. Wiring diagram shows polarity connections for one channel of a stereo or home theater system. FINAL ADJUSTMENTS Check the speakers for playback, first by setting the system volume con- trol to a minimum level, and then by applying power to your audio system. Play a favorite music or video segment and increase the system volume control to a comfortable level. NOTE: Y ou should hear balanced audio reproduction across the entire frequency spectrum. If not, check all wiring connections or consult the authorized Infinity dealer from whom you purchased the system f or more help. T he amount of bass you hear and the stereo-image quality will be affected by a number of different factors, including the rooms size and shape, the construction materials used to build the room, the listeners position r elative to the speakers, and the position of the speakers in the room. Listen to a variety of music selections and note the bass level. If there is too much bass, move the speakers away from nearby walls. Conversely, if you place the speakers closer to the walls, there will be more bass output. Nearby reflecting surfaces can adversely affect stereo-imaging quality. If this happens, try angling the speakers slightly inward toward the listening position until the optimum effect is achieved. CARE OF YOUR SPEAKER SYSTEM Each Primus series cabinet has a wood-grain-vinyl finish that does not r equire any routine maintenance. When needed, use a soft cloth to remove any fingerprints or dust. Clean the grille by gentle vacuuming. NOTE: Do not use any cleaning products or polishes on the cabinet or grille.