Pure Acoustics LORD-8 User manual

USER GUIDE
5.1 Home Theater Speaker Package
LORD-8
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LORD-8
5.1 Home Theater Speaker Package
Contents
Welcome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Setting up your speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Care and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Welcome
Congratulations on your purchase of a high-quality Pure acoustics product.
Your LORD-8 speaker system represents the state of the art in
home theater speaker design and is designed for reliable and
trouble-free performance. It will provide outstanding performance and
years of listening enjoyment. Take time to read through this manual
thoroughly to make sure that you get maximum performance out of
your new speakers.
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Safety information
To reduce the risk of electric shock, do not remove
the cover or back. No user serviceable parts
inside. Refer servicing to qualified service
personnel.
To reduce the risk of fire or electric shock, do not
expose your speakers to rain or moisture.
Dangerous high voltages are present inside the
enclosure.
Do not open the cabinet.
To prevent electric shock, match the wide blade on
the power cord plug to the wide slot on an electric
outlet. If the plug does not fit, consult a licensed
electrician to replace the obsolete outlet. Do not
modify the power cord plug, or you will defeat this
safety feature.
When replacing the direct plug-in power supply or
a separable, cord-connected power supply, the
replacement must be an exact duplicate or one
which has been recommended by the
manufacturer.
This symbol indicates that there is
dangerous voltage within the enclosure
that may be of sufficient magnitude to
constitute a risk of electric shock.
This symbol indicates that there are
important operating and maintenance
instructions in the literature accompanying
your speakers.
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Important safety instructions
1Read these instructions.
2Heed all warnings.
3Follow all instructions.
4Do not use your speakers near water.
5Clean only with a dry cloth.
6Do not block any ventilation openings. Install in accordance with
the manufacturer’s instructions.
7Do not defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two blades with one
wider than the other. A grounding type plug has two blades and a
third grounding prong. The wide blade or the third prong is
provided for your safety. If the provided plug does not fit into your
outlet, consult an electrician for replacement of the obsolete outlet.
8Protect the power cord from being walked on or pinched
particularly at plugs, convenience receptacles, and the point
where they exit from your speakers.
9Only use attachments or accessories specified by the
manufacturer.
10 Use only with a cart, stand, tripod, bracket, or table
specified by the manufacturer.
11 Unplug your speakers during lightning storms or
when unused for long periods of time.
12 Refer all servicing to qualified service personnel.
13 Servicing is required when your speakers have been damaged in
any way, such as the power supply cord or plug is damaged, liquid
has been spilled or objects have fallen into your speakers, your
speakers have been exposed to rain or moisture, do not operate
normally, or have been dropped.
14 Your speakers should not be exposed to dripping or splashing,
and no objects filled with liquids, such as vases, should be placed
on your them.
15 The main power switch is used as the disconnect device, so the
switch should always remain within easy reach for quick shutoff.
The standby switch does not disconnect the speaker system from
power.
The double insulation symbol indicates a
double-insulated product. In a double-insulated
product, two systems of insulation are provided
instead of grounding.
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Features
Satellite/center channel speaker
•0.75-inch (19 mm) balanced dome tweeter (center channel)
•2.5-inch (64 mm) midwoofer
•0.5-inch (13 mm) balanced dome tweeter (satellite)
•Video shielding for placement near a TV or monitor
•5-way binding posts
•Injection-molded plastic cabinets
Subwoofer
•8-inch (203 mm) cone
•High-efficiency amplifier
•Bass reflex enclosure with low noise vent
•Adjustable low-pass crossover frequency
•Adjustable volume control
•Phase switch
•Automatic signal-sensing control
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Back of subwoofer
# Component Description
1 Left channel (high
level) input These binding post terminals for speaker wires accept
a stereo, speaker-level, full-range signal from a
receiver or power amplifier. This signal is processed
and amplified to power the subwoofer.
2 Right channel
(high level) input
3 Auto signal switch This three-position switch controls the power status of
the subwoofer.
•Off: Turns the subwoofer off.
•Auto: Places the subwoofer in standby mode. In
standby, the subwoofer automatically turns on
when an audio signal is applied to either the high
(speaker) level or low (line) level inputs. In this
mode, the subwoofer will turn off about
15 minutes after the input signal has stopped.
•On: Turns the subwoofer on regardless of
whether a signal is present.
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PURE ACOUSTICS LORD-8 Home Theater Speaker Package
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4 Line level input These RCA jacks accept a line-level, full-range signal
from the pre-amplifier or LFE output of a receiver or
preamplifier.
This full-range signal is processed and amplified to
power the subwoofer.
5 Polarity switch This two-position switch allows the best match of
acoustic output between the subwoofer and the
satellite speakers in the crossover frequency region
between them.
•The 0° position maintains phase from input to
output.
•The 180° position changes the polarity by 180°.
Try both settings and pick the one that sounds best.
6 Status LED This shows the status of the subwoofer.
•Red indicates that the amplifier is plugged in and
the power switch is either off or in standby mode
with no input signal present.
•Green indicates that the amplifier is operating
with a signal present at the input from the
pre-amplifier, receiver, or power amplifier.
7 Subwoofer
crossover
(frequency)
This rotary control sets the upper frequency at which
the output of the subwoofer begins to roll off.
Continuously variable from 60 Hz to 160 Hz, it
matches the upper frequency characteristics of the
subwoofer to the low-frequency response of the
satellite speakers.
Recommended setting: 150 Hz.
8 Volume control
(gain)
This rotary control adjusts the level of the subwoofer
and is used to balance its volume with that of the
satellite speakers.
9 Main power switch This switch controls the overall power status of the
subwoofer. It must be in the ON position for the
subwoofer to operate.
10 Fuse For continued protection, replace the fuse with the
same type and size listed.
# Component Description
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Setting up your speakers
Positioning your speakers
The following illustration depicts the most generally accepted speaker
locations for a home theater system.
Although there are limitless ways you can arrange your speakers,
using the above illustration as a template will provide a great starting
point. Experiment with slightly different speaker locations for
improved performance in your specific listening environment.
The left front and right front speakers should form a 45-degree
triangle, using the center seating position as the apex.
The rear speakers should be placed beside the listening area, and
pointed towards each other, about 2-3 feet above the listener’s head.
45
Center front
Right frontLeft front
Subwoofer
Left
rear
Right
rear
Listening area
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PURE ACOUSTICS LORD-8 Home Theater Speaker Package
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Front speaker heights
One of the most important parameters for the front speakers in a
home theater system is their height. Refer to the following illustration
for an example of ideal speaker height placement.
In an ideal arrangement, all three speakers are aligned on the same
horizontal plane in relation to the viewing screen. This establishes a
firm “audio image” height when special audio effects are panned from
one side to the other, such as a speeding car moving across the
screen.
A large “audio image” discontinuity (mismatch) occurs when the
heights of the front speakers vary, as illustrated below. This uneven
speaker arrangement makes the “audio image” of a moving object
sound unnatural due to shifts in the audio image height.
Proper placement
Improper placement
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Connecting your speakers
Refer to the following illustration as a guide for connecting the
speakers using speaker-level (high-level) inputs.
Turn off all power to your subwoofer and other equipment
before making any connections.
Left
rear
Right
rear
Center
front
FRONT
Right
front
A/V receiver
or amplifier
CENTER SURROUND
Speaker-level inputs
Left
front
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PURE ACOUSTICS LORD-8 Home Theater Speaker Package
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Refer to the following illustration as a guide for connecting speakers
using line-level (subwoofer) inputs from A/V amplifiers and receivers
with 5.1-channel outputs.
Connect the subwoofer LFE output of a receiver to either the left or
right line-level RCA input jack. In this situation, a Y adapter could be
used but is not required. If you don’t have an LFE output, then left/
right pre-amplifier outputs can be connected to the left/right line-level
RCA input jacks.
Care and maintenance
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 grilles to vacuum and remove dust.
•Do not vacuum any of the speaker components, because
permanent damage could result.
Left
rear
Center
front
FRONT
Right
front
A/V receiver
or amplifier
CENTER SURROUND
Line-level inputs
Left
front
Right
rear
A/V receiver
or amplifier
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PURE ACOUSTICS LORD-8 Home Theater Speaker Package
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Troubleshooting
After you have set up your new speakers, they should give you years
of listening enjoyment with your favorite movies and music. However,
if you should experience a problem with your speakers, try these
troubleshooting steps to help diagnose and fix the problem.
Problem Solution
Subwoofer makes loud noises
when power is turned on.
•Muting circuit is defective. Return for repair.
Subwoofer has no output, and
Status LED is off.
•Line cord is not plugged in.
•Line fuse is blown. Unplug the line cord from the
wall outlet, then check the fuse.
•Internal fuse is blown. Return for repair.
Subwoofer has no output, and
Status LED is red.
•No signal is reaching the subwoofer. Check the
connections from the receiver or preamplifier.
•The power switch is off. Move switch to Standby
or On.
Subwoofer has no output, and
Status LED is green.
•Audio signal is present, but input level control is
set at the minimum.
Subwoofer has little output. •Input level control is set too low.
•If using high-level inputs, right and left channels
are connected out of phase. Check the wiring.
Subwoofer output is distorted
at high volume.
•Volume of the subwoofer is too high, causing the
amplifier to be overdriven. Reduce the input level
control.
•The signal from the receiver, amplifier, or
preamplifier is distorted from being overdriven.
Reduce the main system volume or bass tone
control.
•Subwoofer electronics are defective. Return for
repair.
Subwoofer output is distorted
at low volume.
•The signal from the receiver, amplifier, or
preamplifier is distorted from defective
electronics.
•The signal connecting wires to the subwoofer
are shorted. Check the wiring.
•Subwoofer electronics are defective. Return for
repair.
Subwoofer emits a hum or
buzzing noises.
•Grounding problem or ground loop condition.
Check the wiring.
•Isolate the problem by removing all connecting
cables and turning up the subwoofer input level
control. If noise is still present, subwoofer
electronics are defective. Return for repair.
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Specifications
Satellite/center-channel speaker
Driver complement Midwoofer: 2.5-inch (64 mm) shielded with
paper cone, foam surround
Tweeters:
•0.5-inch (13 mm) balanced dome
tweeter (satellite)
•0.75-inch (19 mm) balanced dome
tweeter (center channel)
Frequency response SAT: 222Hz - 26kHz Center: 175Hz - 25kHz
SAT: 100W Center: 80W
Impedance
Power handling 50 W
Sensitivity [email protected]/1 m (3.28 feet)
)gk86.0(.sbl5.1:etilletaSthgieW
Center channel: 2.0 lbs. (0.91 kg)
Dimensions Satellite: 6.31 × 4 × 3.75 inches
(160 × 102 × 95 mm)
Center channel: 4.13 × 9.13 × 3.75
(105 × 232 × 95 mm)
Subwoofer
Driver complement Woofer: 8-inch (203 mm) high-excursion
woofer
Amplifier power 80 W RMS
Crossover frequency Continuously variable 60 Hz~160 Hz
Frequency response 33 Hz~160 Hz
Enclosure Bass reflex design
)gk49.7(.sbl5.71thgieW
Dimensions 14.33 × 11.81 × 13.15 inches
(364 × 300 × 334 mm)
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