PRIMUS SPEAKER SYSTEMS
Owner’s Guide
Primus 140
Primus 150
Primus 160
INFINITY PRIMUS™ SERIES
The Primus series of loudspeakers continues Infinity’s longstanding commitment to accurate sound reproduction. Our proprietary Metal Matrix Diaphragm (MMD™) drivers, precision dividing networks, and rigid, 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. Keep 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 “Home Theater” below if you also plan to use the speakers for home theater reproduction.
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Right |
Channel |
Channel |
Listening Position
Figure 1. Experiment with speaker placement to obtain the best bass level and stereo imaging in your room.
Home Theater
For front-channel use, place one speaker on the left and another on the right, 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.
For rear-channel use, place Primus bookshelf speakers on bookshelves or stands alongside the listening position. Final placement depends on room acoustics, availability of space, and your listening preference (Figures 2 and 3).
The 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 recommendations on subwoofer models for your application.
Infinity Subwoofer
(optional)
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Figure 2.This overhead view shows a typical home theater plan.
Infinity Subwoofer |
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Figure 3.This figure shows an alternate layout, which may be more suitable for some rooms.
2 PRIMUS SPEAKER SYSTEMS
WALL-MOUNTING THE PRIMUS 140 AND
PRIMUS 150
The Primus 140 and Primus 150 are designed to mount directly to a wall. Each satellite speaker has two keyholes on the back. Each speaker will require (2) 1-1/2," #10 wood screws fastened to a wall stud. If a wall stud is unavailable, install an anchor appropriate for a 1-1/2," #10 screw.
NOTE: The customer is responsible for the correct selection and use of mounting hardware (available through hardware stores) that will ensure the proper and safe wall-mounting of the speakers.
FIGURE 4. |
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Keyhole mounts |
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1/4"-20 Threaded insert |
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Step 1.
Mark the positions on the wall where you would like to place the mounting screws.
Step 2.
Fasten two 1-1/2," #10 wood screws to the wall using the markings placed in Step 1 as your guide. Leave an 11/16" space between the wall and screwhead. If a wall stud is not available, use an appropriate anchor.
Step 3.
Place the speaker on the wall by aligning the keyholes on the back of the speaker to the screwheads on the wall. Once positioned properly, the speaker should slide down slightly and become secure.
The Primus 140 also allows the use of third-party wall brackets using the 1/4"-20 threaded insert located beneath the keyhole mount. Consult the wall-bracket manufacturer for selection of proper bracket.ker on the wall by aligning the keyhole on the back of the speaker to the screwhead on the wall. Once positioned properly, the speaker should slide down slightly and become secure.
WIRING THE SYSTEM
IMPORTANT: Make sure all equipment is turned off before making any connections.
For 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.
The speakers have coded terminals that accept a variety of wire connectors.The most common connection is shown in Figure 5.
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 6. Connect the – (black) terminals in a similar way. See the owner’s 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.
Figure 5.This example shows how to connect bare wires to the terminals.
RED
Receiver or Amplifier (rear view)
+ 
Speaker (rear view)
Figure 6. Wiring diagram shows polarity connections for one channel of a stereo or home theater system.
PRIMUS SPEAKER SYSTEMS |
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