Infinity Speaker System QPS1 User Manual

QPS  
1
Quadrapole Surround Speakers  
Model QPS-1  
Owners Manual  
Part # 333-844-001  
®
 
PLANNING YOUR SYSTEM  
To help plan your home theater system, weve included two system applications, as  
shown in Figures 1 and 2. The first one represents a typical living room where the home  
theater system is the main focus. In the second application, the furniture is arranged for  
fireplace viewing and the entertainment center is in a corner.  
SURROUND PLACEMENT  
CONCERNS...  
Since QPS-1 surround speakers are a quadropole design, exact placement is not critical.  
For best results, position the speakers so they are level with or behind the listeners  
(typically seated on a couch). Place them at or above ear level (28" or 0.7m, depending  
on the available shelf or wall space). Make sure the speaker marked left (on its rear  
label) is on the left side (as you face forward), and the speaker marked right is on the  
right side (see Figure 1).  
STAND-UP  
O
R
Set each speaker on any convenient shelf or table via a built-in display stand (see Figure  
3 on page 4). Or use the built-in keyhole (see Figure 3 on page 4) for a more permanent  
mounting method.  
WALL-MOUNT...  
Figure 1. This overhead view shows  
a typical home theater plan. The  
QPS-1 speakers can be placed on  
stands in the noted areas or wall-  
mounted on side or back walls.  
Big Screen TV  
Left  
Channel  
Right  
Channel  
Center Channel  
on top of TV  
QPS-1  
Left Surround  
(on side wall)  
QPS-1  
Right Surround  
(on side wall)  
Couch  
Left Surround  
Placement Area  
Right Surround  
Placement Area  
(or use rear wall)  
2
Infinity QPS-1 – Owners Manual  
 
Figure 2. This layout is often  
preferred when a fireplace is the  
centerpiece of the room.  
Fireplace  
Right  
Channel  
QPS-1  
(Right Surround)  
Center Channel  
on top of TV  
Left  
Channel  
Couch  
QPS-1  
(Left Surround)  
Infinity QPS-1 – Owners Manual  
3
 
PLACEMENT AND MOUNTING  
The Infinity QPS-1 surround speakers are equipped with integral display stands for easy  
TABLE-TOP PLACEMENT...  
placement on a shelf or table.  
QPS-1  
(Table-Top Placement)  
Bottom View  
WALL-MOUNT OPTIONS...  
IMPORTANT!  
For wall-mounting, you can use the speakers keyhole (see Figure 3).  
If you are unsure of how to safely and securely wall-mount a speaker, please ask a home  
theater or hardware specialist for additional help.  
Figure 3. Use the built-in keyhole to mount  
QPS-1 surround speakers on walls.  
Align keyhole with  
screw head and  
slide speaker down.  
NOTE: Be sure to fasten each #8 x 1 1/2  
"
Phillips-head wood screw into a wall  
stud before hanging the speaker.  
Fasten #8 x 112"  
Phillips-head  
wood screw  
into wall stud;  
leave 116" space  
from head to wall.  
QPS-1  
(Wall-Mount Via Keyhole)  
4
Infinity QPS-1 – Owners Manual  
 
WIRING THE SYSTEM  
After placing the speakers, you are ready to connect your system. First turn off all audio system  
power. Use high-quality speaker wire to make the connections. Consult the owners manuals  
(included with your amplifier, receiver or television) for connection and operation procedures.  
WIRING AND POLARITY...  
IMPORTANT!  
QPS-1 speakers have gold-plated terminals that accept a variety of wire connectors (see Figure 4  
below). Observe correct polarities when making speaker connections, as shown in Figure 5 (on  
page 6).  
Connect each terminal on the back of the amplifier, receiver or television to the respective  
+
(red) terminal on each speaker. Connect the (black) terminals in the same way.  
+
Do not reverse polarities (e.g., to or to ) when making connections.  
+
+
- -  
TESTING THE SPEAKERS  
After placing and wiring the speakers, turn on audio system power. Follow the  
instructions (packed with your A/V preamplifier or receiver) to calibrate the  
®
®
Dolby Pro Logic or Dolby Digital channels. Most components include a built-in  
test tone to help you balance the sound levels to all speakers in your system. During  
calibration, verify that each QPS-1 reproduces the test tone. If not, check the wiring  
connections and see the Troubleshooting chart (on page 7) for help.  
Figure 4. QPS-1 surround speakers feature  
gold-plated terminals that can be  
connected in several different ways;  
e.g., banana plugs, spade terminals  
(not shown) and direct wiring.  
Speaker Wire  
No Stripe = + Stripe =  
Speaker Wire  
Stripe = No Stripe = +  
Insert Bare End;  
Tighten Terminal  
Red = +  
Red = +  
Black =  
Black =  
Insert Bare  
Wire End;  
Tighten Cap.  
Insert Plug  
Into Connector.  
Loosen Terminal.  
CONNECTING SPEAKERS  
DIRECTLY TO WIRES  
Loosen Cap.  
CONNECTING SPEAKERS  
USING BANANA PLUGS (NOT SUPPLIED)  
Infinity QPS-1 – Owners Manual  
5
 
Front Right  
Center  
Front Left  
®
Rear  
+
-
Rear  
Rear  
F
ULL RANG  
E
R
F
ULL RANG  
E
R
LOUDSPEAKE  
LOUDSPEAKE  
model P-F  
R
model P-F  
amplifier 0-150W  
6
R
amplifier  
6
1
0-150W  
1
INPUT  
INPUT  
+
+
+
+
-
-
-
-
+
+
-
+
-
-
+
+
Front  
Front  
A/V Receiver  
(Rear Panel)  
Right  
Center  
Left  
Surround  
Surround  
IMPORTANT!  
In Dolby Digital/AC-3®  
Set Surround  
Channels To SMALL.  
+
+
-
-
Rear  
Rear  
QPS-1  
QPS-1  
Surround Right  
Surround Left  
Figure 5. Wiring diagram shows  
connections for a typical home  
theater system.  
6
Infinity QPS-1 – Owners Manual  
 
CARE OF YOUR SPEAKER SYSTEM  
The QPS-1 cabinet does not require any routine maintenance. When cleaning is needed,  
first make sure power is off, and then use a soft cloth, pre-dampened with a solution of  
mild detergent and water, to remove any fingerprints or to wipe off dust. DO NOT USE  
ANY OTHER CLEANING PRODUCTS OR POLISHES.  
The metal grille can be cleaned with gentle vacuuming.  
TROUBLESHOOTING  
SYMPTOM  
CAUSE  
SOLUTION  
No sound  
Power is off  
See A/V preamplifier  
or receiver owners  
manual for operation  
and further help  
Speakers not connected  
Connect speakers  
(see pages 5 and 6)  
Distortion with  
volume control  
near minimum  
Defective A/V preampli-  
fier or receiver  
Repair defective AV  
preamplifier or receiver  
Shorted speaker wires  
Check or repair wiring  
(see pages 5 and 6)  
Distortion on music  
peaks or sound  
effects (e.g., pops  
or rapping noise)  
Dynamic soundtrack  
(e.g., explosions)  
causes speaker  
Turn down master  
volume control to  
lower overall range  
to bottom out”  
Tone controls  
are set too high  
Set bass and treble flat;  
use controls sparingly  
Buzz, hum or  
crackle when  
connecting wires  
Connecting wires  
with power on causes  
transient signal spikes  
Connect wires only  
when audio system  
power is off  
Buzz or hum when  
A/V preamplifier or  
receiver is on  
Grounding problem  
See A/V preamplifier  
or receiver owners  
manual for operation  
and further help  
Infinity QPS-1 – Owners Manual  
7
 
SPECIFICATIONS QPS-1  
Frequency Range:  
80 ~ 20,000Hz (–6dB@80Hz)  
88dB spl (2.83 volts/1 meter spatially averaged)  
PERFORMANCE DATA  
Sensitivity:  
Impedance:  
8 Ω (5.5 min.)  
Maximum Peak Output:  
Amplifier Requirements:  
108dB (spl on program)  
Suitable for use with amplifiers  
10 ~ 80W (@ 8 )  
Four  
3 inch  
DRIVE UNITS  
DIMENSIONS  
Width:  
Height:  
Depth:  
Weight:  
11 inches  
8 12 inches  
4 12 inches  
7 pounds  
Declaration of Conformity  
We, Infinity Systems A/S  
Kongevejen 194B  
DK-3460 Birkerød  
DENMARK  
declare in own responsibility, that the product described  
in this owner’s manual is in compliance with technical  
standards:  
EN 50 081-1/1992  
EN 50 082-1/3.1995  
Steen Michaelsen  
Infinity Systems A/S  
Infinity is a registered trademark of Infinity Systems, Inc.  
Birkerød. DENMARK. 10/97  
Dolby, Pro Logic and AC-3 are registered trademarks of Dolby Laboratories.  
8
Infinity QPS-1 – Owners Manual  
 
www.infinitysystems.com  
P/N: 333-844-001  
 

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