Pure Acoustics Pure acoustics Loudspeakers User manual

INTRODUCTION
Congratulations on your purchase of Pure acoustics Loudspeakers. Your new
speakers represent the latest technologies in loudspeaker design and manufacturing.
They will provide outstanding performance and years of listening enjoyment.
Please take time to read through this manual thoroughly to insure you get
maximum performance out of your new loudspeakers.
SATELLITE/CENTER CHANNEL FEATURES
• Video shielding for placement near a TV or monitor
• 1/2" Balanced dome tweeter
• Video sheilded
• Spring loaded push terminals
• Injection molded plastic cabinets
SUBWOOFER FEATURES
• High efficiency amplifier
• Bass reflex enclosure with low noise vent
• Adjustable low-pass crossover frequency
• Adjustable gain control
SPEAKER PLACEMENT
SUBWOOFER SET UP GUIDE
Typical Loudspeaker Placement
Figure 1 illustrates the most generally accepted speaker locations for a home the-
ater system. Although there are an infinite number of set up options using Figure
1as a template will certainly provide a great starting point. Experimentation with
slightly different speaker locations may provide improved performance in your
specific listening environment.
The front left and right speakers should form a 45 degree triangle using the center
seating position as the apex.
The surround speakers should be placed beside the listening area, and pointed
towards each other. It is also recommended that the speakers be 2-3 feet above
the listeners head.
Left/Center/Right Front Speaker Height
One of the most important parameters for the left/center/right front speakers in
a home theater system is height. Figure 2 shows the ideal arrangement of the
speakers in relation to the viewing screen: all three speakers are aligned on the
same horizontal plane. This establishes a firm image height when special audio
effects are panned from one side to the other, such as a speeding car moving
across the screen. When a large discontinuity occurs between the heights of the
center front channel and the left/right front speakers, as depicted in Figure 3 eht,
image of the moving object becomes confused and somewhat unnatural due to
shifts in image height.
CARE AND MAINTENANCE
Your speakers are designed to work with a wide range of electronic components.
As little as 20 watts per channel can provide enough power for most applications.
If you have a large room or prefer louder listening levels, more power may be
required.
Caution: When choosing an amplifier, do not exceed the power
rating of the speaker. If you hear very high levels of audible dis-
tortion you are exceeding the capabilities of the system. Damage
can occur from this distortion, turn the volume back down until the
distortion disappears.
Use the following guidelines to maintain the appearance of your speakers. Use
a soft, damp cloth to clean the speaker cabinet. Avoid using harsh detergents or
cleaning fluids. Remove the grills to vacuum and remove dust. Do not vacuum
any of the speaker components, permanent damage could occur.

SPECIFICATIONS
Satellite/Center Channel
Driver Compliment
Midrange- 3” shielded with paper cone, rubber surround
Tweeter- 1/2" Balanced dome tweeter
Frequency Response: 150Hz - 20kHz
Impedance: 8 ohms nominal
Power Handling: 75 watts RMS / 150 watts peak music
Recommended Amplifier Power: 20-75 watts RMS
Sensitivity: [email protected]/1M
Weight:
Satellite- 1.8 lbs.
Center Channel- 3.0 lbs
Dimensions:
Satellite- 5 7/8"H X 4"W X 4"D
Center Channel- 4 1/8"H X 9 5/8"W X 3 3/4"D
Subwoofer
Driver Compliment
Woofer- 8" high excursion woofer
Amplifier- 60 watts output
Crossover Frequency: continuously variable 50Hz-150Hz
Frequency Response: 50Hz - 150Hz
Enclosure: tuned port design
Weight: 17 lbs.
Dimensions: 12 3/4” H X 10 1/4” W X 13” D
Optional Installation Accessories
A. Feet for Satellites
Included in the system are rubber feet that allow you to raise the Satellite
Speakers up off of a level surface. Simply peel each of the four feet off the
sheet and press on to the bottom of the Satellite Speaker. Repeat steps for
the remaining Satellite Speakers.
B. Feet for Center Channel
Included in the system are plastic feet that allow the Center Channel to be
angled more horizontally on top of your television monitor. If you wish to use
the feet, simply insert the knurled end of the feet into the two holes in the lower
rear of the Center Channel.
RIGHT
FR ONT
LEFT
FR ONT
45
LEFT
REAR
RIGHT
REA R
SUBW OOFER
LISTENING AREA
CENTER
FR ONT
Figure 1- Typical loudspeaker placement in a home theater system.
Figure 2- Proper placement of left/center/right front speakers.
Figure 3- Improper placement of left/center/right front speakers

EXPLANATION OF FEATURES AND CONTROLS
Refer to Figure A
1) Power Switch: This two position switch controls the power status of the sub-
woofer.
Off: Turns the unit off.
On: Turns the unit on regardless of whether a signal is present or not.
2) Subwoofer crossover: This rotary control adjusts a variable low pass filter to
set the upper frequency at which the output of the subwoofer begins to roll-off.
Continuously variable from 50Hz to 150 Hz, it matches the upper frequency char-
acteristics of the subwoofer to the low frequency response of the main stereo
speakers. Recommended setting: 120Hz-150Hz.
3) Line level input: These RCA phono jacks accept a line level full range signal
from the preamplifier output of a receiver or preamplifier. This full range signal is
processed and amplified to power the subwoofer.
4) Speaker level input: These spring loaded terminals for speaker wire accept a
stereo, speaker level, full range signal from a receiver or power amplifier. This
signal is processed and amplified to power the subwoofer.
5) Fuse: For continued protection replace fuse with same type and size listed.
6) Level control: This rotary control adjusts the level of the subwoofer and is used
to balance its volume with that of the main stereo speakers.
7) Status LED: This light emitting diode shows the status of the subwoofer elec-
tronics. "Red" indicates that the amplifier is plugged in and the power switch is
on.
WIRING AND CONNECTIONS
Turn off all power to your subwoofer and other equipment before making
any connections.
Installation using speaker level inputs (Figure B).
FIGURE B
FRONT CENTER SURROUND
A/V Receiver or Amplifier
LEFT
REAR
RIGHT
REAR
CENTER
FR ON T
+ -
+ - + -
HI LEVE L IN
R
L
L
R
LINE IN
MIN M AX 50Hz 150Hz
POW ER
ON
OFF
FUS E 1A/2 50V
Made In Chi na
GAIN FREQ
FROM AMPLIFIER
230 VAC
100 WATTS
50 HZ
LEFT
FR ON T
+ -
RIGHT
FR ON T
+ -
1A 250 V
Installation with A/V amplifiers and receivers that have 5.1 channel line level
output (Figure C).
Use an RCA "Y" adaptor to connect both line level inputs.
FIGURE C
FRONT CENTER SURROUND
A/V Receiver or Amplifier
RIGHT
FR ONT
LEFT
FR ONT
LEFT
REA R
RIGHT
REAR
CENTER
FR ONT
+ -
+ - + -
+ -
+ -
OUTPUTS
SUB
HI LEV EL IN
R
L
L
R
LINE I N
MIN M AX 50 Hz 150 Hz
POWER
ON
OFF
FUSE 1A/ 250 V
Made In C hina
GAIN FREQ
FROM AMPLIFIER
230 VAC
100 WATTS
50 HZ
1A 25 0V
230