Primus P252 - Loudspeaker INFINITY - Free user manual and instructions

Product Type	Bookshelf Speaker
Brand	Infinity
Model	Primus P252
Dimensions (H x W x D)	14.2 x 8.3 x 9.8 inches (360 x 210 x 250 mm)
Weight	11 lbs (5 kg)
Power Handling	50 - 150 Watts
Frequency Response	45 Hz - 20 kHz
Impedance	8 Ohms
Sensitivity	90 dB
Drivers	1 x 5.25" Woofer, 1 x 1" Tweeter
Enclosure Type	Bass Reflex with Rear Port
Connectivity	Binding Posts for Speaker Wire
Recommended Amplifier Power	20 - 150 Watts per channel
Recommended Placement	Bookshelf or Speaker Stands
Cabinet Material	MDF with Vinyl Finish
Grille	Removable Black Cloth Grille
Cleaning and Maintenance	Wipe with a dry cloth; avoid liquids
Safety	Keep away from water and excessive heat
Spare Parts / Repairability	Woofer and tweeter replaceable by qualified technician
General Information	Designed for high-fidelity music reproduction

Frequently Asked Questions - Primus P252 INFINITY

How do I connect the Infinity Primus P252 speaker to my amplifier?

Use high-quality speaker wire. Strip the ends, insert into the binding posts, and tighten. Ensure correct polarity (+ to +, - to -).

What is the recommended placement for the Primus P252?

Place on sturdy bookshelves or dedicated speaker stands at ear level. Avoid corners to prevent bass boom. Keep at least 6 inches from rear wall for ported speakers.

Can I use these speakers for home theater?

Yes, the Primus P252 works well as front, center or surround speakers in a home theater system. Match with Infinity series for timbre consistency.

How do I clean the speaker grille?

Gently remove the grille and dust with a soft brush or vacuum on low suction. For stains, use a slightly damp cloth and air dry completely before reattaching.

What amplifier power is suitable for the Primus P252?

Use an amplifier rated 20-150 Watts per channel at 8 Ohms. Too little power may cause distortion; too much can damage the speaker.

Why is there no sound from one speaker?

Check wiring connections at both speaker and amplifier. Ensure channel balance is centered. Swap cables to isolate if the issue is the speaker or amp.

Can I bi-wire the Primus P252?

The Primus P252 has single binding posts, not bi-wire capable. Use standard single-wire connection.

Is the Primus P252 magnetically shielded?

No, the Primus P252 is not shielded. Keep at least 12 inches away from CRT TVs or sensitive equipment to avoid interference.

What is the warranty period for Infinity Primus P252?

Typically 5 years for speakers (excluding damage from misuse). Check your country-specific warranty from Infinity or your dealer.

How do I break in new speakers?

Play music at moderate volume for 20-50 hours. Gradually increase volume. This loosens the suspension and improves bass and clarity.

USER MANUAL Primus P252 INFINITY

Product photo of a multi-tiered audio amplifier with speakers and audio dividers (no visible text or labels)

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 the "Home Theater" section if you also plan to use the speakers for home theater reproduction.

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 surround use, place speakers 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.

Figure 2. This overhead view shows a typical home theater plan. Left/right rear channels are for a 7-channel system. Center rear channel is for a 6-channel system.

Figure 3. This figure shows an alternate layout, which may be more suitable for some rooms. Left/right rear channels are for a 7-channel system. Center rear channel is for a 6-channel system.

WALL-MOUNTING THE P142, P152 AND PC250

The P142, P152 and PC250 are designed to mount directly to a wall. Each speaker has two keyholes on the back, and 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.

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 P142 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.

CHANGING THE P252 AND P362 FEET

The P252 and P362 feature attractive outboard feet, installed at the factory. However, if you would like to replace them with the less visible inboard feet (included), follow the instructions below.

1. Remove the four feet on the bottom of the speaker by loosening the screw in each foot. Keep the screws for later use.

Simple line drawing of a screwdriver inserted into a circular component, no text or symbols present

1. Remove the rubber plug from each inner hole (and save for possible future use).
2. Attach the black inboard feet to the inner holes from which you just removed the rubber plugs, using the same screws you just removed.
3. Hand-tighten securely, using a handheld Phillips (+ tip) screwdriver. Do not use a powered screwdriver of any type.

Simple line drawing of a screwdriver inserted into a corner joint (no text or symbols)

CAUTION: Floorstanding (lower) loudspeakers have a high center of gravity and may become unstable and tip over during earthquakes, or if rocked, tipped or improperly positioned. If this is a concern, these speakers should be anchored to the wall behind them, using the same procedures and hardware customary for anchoring bookcases and wall units. The customer is responsible for proper installation and proper selection of hardware.

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.

Figure 6. 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 control 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: You 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 for more help.

The amount of bass you hear and the stereo-image quality will be affected by a number of different factors, including the room's size and shape, the construction materials used to build the room, the listener's position relative 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.

Each Primus series cabinet has a wood-grain-vinyl finish that does not require 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.

In the event that your Infinity speaker needs service, contact your Infinity dealer or distributor, or visit www.infinitysystems.com for the location of the nearest service center.

SPECIFICATIONS

P142 P152 P162

Frequency Range (±3dB): 100Hz - 20,000Hz 58Hz - 20,000Hz 49Hz - 20,000Hz

Recommended

Amplifier Power Range: 10 – 100 watts 10 – 100 watts 10 – 150 watts

Sensitivity: 86dB 88dB 90dB

(2.83V @ 1 meter)

Nominal Impedance: 8Ω 8Ω 8Ω

Crossover Frequency: 3000Hz; 24dB/octave 3300Hz; 24dB/octave 3000Hz; 24dB/octave

Low-Frequency Driver: 4" (100mm) MMD, ^ magnetically shielded		5-1/4" (130mm) MMD ^ magnetically shielded	6-1/2" (165mm) MMD, ^ magnetically shielded
High-Frequency Driver:	3/4" (19mm) MMD, magnetically shielded	3/4" (19mm) MMD, magnetically shielded	3/4" (19mm) MMD, magnetically shielded
Dimensions (H x W x D): (with grille)	9-7/8" x 5-15/16" x 6-13/16" (251mm x 150mm x 173mm)	13" x 7-3/8" x 10-1/2" (330mm x 187mm x 267mm)	14-3/4" x 8-1/4" x 11" (375mm x 208mm x 280mm)
Weight:	7 lb (3.2kg)	13.5 lb (6kg)	16.1 lb (7.3kg)

	P252	P362	PC250	PC350
Frequency Range (±3dB):	49Hz – 20,000Hz	38Hz – 20.000Hz	80Hz – 20,000Hz	80Hz – 20,000Hz
Recommended Amplifier Power Range:	10 – 150 watts	10 – 200 watts	10 – 150 watts	10 – 150 watts
Sensitivity: 92dB 93dB 90dB (2.83V @ 1 meter)	91dB
Nominal Impedance:	8Ω	8Ω	8Ω	8Ω
Crossover Frequency:	2500Hz; 24dB/octave	350Hz, 3300Hz; 24dB/octave	3000Hz; 24dB/octave	650Hz, 2800Hz; 24dB/octave
Low-Frequency Drivers:	Dual 5-1/4" (130mm) MMD; magnetically shielded	Dual 6-1/2" (165mm) MMD; magnetically shielded	Dual 5-1/4" (133mm) MMD; magnetically shielded	Dual 5-1/4" (133mm) MMD; magnetically shielded
Mid-Frequency Driver(s):	N/A	4" (100mm) MMD, magnetically shielded	N/A	Dual 3" (75mm) MMD, magnetically shielded
High-Frequency Driver:	3/4" (19mm) MMD, magnetically shielded	3/4" (19mm) MMD, magnetically shielded	3/4" (19mm) MMD, magnetically shielded	3/4" (19mm) MMD, magnetically shielded
Dimensions (H x W x D): (with grille)	35-3/4" x 7-3/8" x 11-3/4" (908mm x 187mm x 300mm)	39-1/4" x 8-1/4" x 13" (997mm x 208mm x 330mm)	7-5/8" x 18" x 9-5/8" (194mm x 457mm x 245mm)	7-3/8" x 23-7/8" x 9-1/4" (187mm x 606mm x 235mm)
Weight:	35.3 lb (16kg)	48.5 lb (22kg)	17.6 lb (8kg)	25 lb (11.4kg)

Infinity continually strives to update and improve existing products, as well as create new ones. The specifications and construction details in this and related Infinity publications are therefore subject to change without notice.

NOTES

NOTES

Declaration of Conformity

We, Harman Consumer Group International

1. route de Tours

declare in own responsibility that the products described in this owner's manual are in compliance with technical standards:

EN 61000-6-3:2001

EN 61000-6-12001

Laurent Rault Hamen Consumer Group International Château du Loir, France 906