Sunfire HRS-8 User manual

High Resolution Series
Subwoofer
HRS-8, HRS-1
0,
and
HRS-12
L...-------------~
User's Manual

~
RISK OF ELECTRIC SHOCK
;j\
~
DONOTOPEN
~
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK
DO
NOT
REMOVE COVER (OR
BACK)
NO
USER-SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL
Important Safety
Instructions
1. Read Instructions
2. Keep these Instructions
3. Heed all Warnings.
4. Follow all Instructions
5.
Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not install near any heat sources such
as radiators, heat registers, stoves,
or
other
apparatus (including amplifiers) that produce
heat.
8. Unplug this apparatus during lightning
storms or when unused for long periods
of
time.
9. Refer all servicing to qualified service
personnel. Servicing is required when the
apparatus has been damaged
in
any way,
such as a power-supply cord
or
plug is dam-
aged, liquid has been spilled or objects have
fallen into the apparatus, the apparatus has
been exposed to rain
or
moisture, does not
operate normally, or has been dropped.
10. Ventilation
-The
apparatus should be
situated so that its location or position does
not interfere with its proper ventilation. For
example, the apparatus should not be situ-
ated on a bed, sofa, rug, or similar surface
that may block any ventilation openings;
or
placed
in
a built-in installation such as
a bookcase, cabinet,
or
closed equipment
rack that may impede the flow
of
air through
ventilation openings.
11. Power Sources -The apparatus should be
connected to a power supply only
of
the type
described
in
these operation instructions or
as marked on the apparatus.
12. Power Cord Protection -Power-supply
cords should be routed so that they are not
likely
to.,be
walked upon or pinched by items
placed upon
or
against them, paying particu-
lar attention to cords at plugs, convenience
The lightning flash with arrowhead symbol
within an equilateral triangle is intended to alert
the user to the presence of uninsulated
"dangerous voltage" within the product's
enclosure, that may be of sufficient magnitude
to constitute a risk of electric shock to persons.
The exclamation point within an equilateral
triangle is intended to alert the user of the
presence of important operating and main-
tenance (servicing) instructions
in
the literature
accompanying the appliance.
receptacles, and the point where they exit
the apparatus.
13. Non-use
Periods-
The power cord
of
the apparatus should be unplugged from
the outlet when unused for a long period
of
time.
14. Object and Liquid Entry -Care should
be taken so that objects
do
not fall into
and liquids are not spilled into the inside
of
the apparatus.
15. Servicing
-The
user should not attempt
to service the apparatus beyond those
means described
in
this operating manual.
All other servicing should be referred to
qualified service personnel.
16.
To
Prevent Electric Shock, do not use
this polarized plug with an extension
cord, receptacle
or
other outlet unless the
blades can be fully inserted to prevent
blade exposure.
Pour preevenir les chocs electriques ne
pas utiliser cette fiche polarisee avec un
prolongateur, un prise de courant ou une
autre sortie de courant,
sauf
si les lames
peuvent etre inserees afond sans laisser
aucune pariie adecouvert.
17. Grounding
or
Polarization-
Precau-
tions should be taken so that the ground-
ing or polarization means
of
the Com-
ponent is not defeated.
This apparatus does not exceed the Class
A/Class 8 (whichever is applicable) limits
for radio noise emissions from digital ap-
paratus as set out
in
the radio interference
regulations
of
the Canadian Department
of
Communications.
ATTENTION -Le present appareil numeri-
que n'emet pas de bruits radioelectriques
depassant las limites applicables aux ap-
pareils numeriques de class A/de class 8
(selon le cas) prescrites dans le reglement
sur le brouillage radioelectrique
edicte par les ministere des
11
communications du Canada: •
2
--""*""------------------------
SUJ'!fire
User's
Manual

18. This equipment has been tested and
found to comply with the limits for a Class
B digital device, pursuant to Part15
of
the
FCC Rules. These limits are designed
to provide reasonable protection against
harmful interference
in
a residential instal-
lation. This equipment generates, uses
and can radiate radio frequency energy
and, if not installed and used
in
accor-
dance with the instructions, may cause
harmful interference to radio communica-
tions. However, there is no guarantee that
interference will not occur
in
a particular
installation.
Ifthis equipment does cause harmful inter-
ference to radio or television reception,
which can be determined by turning the
equipment off and on, the user
is
encour-
aged to try to correct the interference by
one or more
of
the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the
equipment and receiver.
Connect the equipment into an outlet
on
a circuit different from that to which the
receiver
is
connected.
Consult the dealer or
an
experienced
radio/TV technician for help.
19. Caution: Changes or modifications not
expressly approved by Sunfire could void
the user's authority to operate this equip-
ment.
WARNING:THIS SUBWOOFER
IS
CAPABLE OF PRODUCING
VERY HIGH SOUND PRESSURE LEVELS. YOU MUST TAKE
EVERY PRECAUTION TO PROTECT YOUR HEARING FROM
PERMANENT DAMAGE.
Contents
Safety lnstructions.........................................2
Introduction ...................................................4
Control Panel Features .................................6
Installation .....................................................8
System Configurations................................
11
Adjusting the Controls.................................15
Specifications..............................................16
Troubleshooting Guide................................17
Limited Warranty .........................................19
Service Assistance ......................................19
To
find out more about this and other Sunfire products,
please visit our website:
www.sunfire.com
Surifjre
User's
Manual
----------------------"*"--
3

Introduction
Thank you for purchasing a Sunfire
High Resolution Series Subwoofer. We
hope you enjoy it and the music it makes
as much as we have enjoyed creating it
for you.
The big breakthrough features
of
the
subwoofer are its uncanny 1
,OOOW
Track-
ing Downconverter amplifier, and its long
throw, High Back-emf woofer. These
powerful forces combine to produce as
much bass as several 15 inch drivers
mounted
in
a cabinet the size
of
a small
refrigerator! And, the High Resolution
Series' extended frequency response
means that your subwoofer
is
the perfect
match to virtually any loudspeaker.
Unpacking
Your Sunfire subwoofer should reach
you
in
perfect condition. Ifyou do notice
any shipping damage, please contact
your Sunfire Dealer immediately.
Gently lift out the unit and remove all
the packing material. It
is
important to
save all the packing materials and the
box
in
case your subwoofer ever needs
to be moved or shipped for repair.
Make sure that you keep your sales
receipt. It is the only way to establish
the duration ofyour Limited Warranty
and it may come
in
useful for insurance
purposes.
Please take a moment to fill out and
mail the Sunfire Customer Response
.card. Also read the serial number located
on the control panel and record it here:
Serial Number:
Purchased from:
Date:
Features
• Patented high-pressure, High Back-
emf, extra-long-throw design
• High efficiency Tracking Downconverter
amplifier
• Low distortion
• Premium quality driver
• Extremely compact size
• Automatic signal-sensing turn-on and
standby mode
• Line-level inputs
• Speaker-level binding post inputs
•
Line-le~el
high-pass outputs
• Phase control
• Crossover frequency control
• Volume control
• Soft clipping circuit allows graceful
overload and prevents speaker dam-
age due to clipping
Care
To
maintain the speaker cabinet's fin-
ish, first unplug the power cord and then
use a soft cloth to clean the surfaces.
If your Sunfire subwoofer needs ser-
vicing, please read the troubleshooting
section on page 17. If a problem persists,
contact your nearest authorized Sunfire
Dealer.
4
--r----------------------
SUJ?fire
User's
Manual

Overview
The Sunfire HRS subwoofers are
designed to give you the best possible
low-frequency sound quality for your
Home Theater and music playback expe-
rience. They incorporate a tremendously
powerful built-in amplifier to produce
tight, seismic, denture-rumbling bass that
you can feel as well as hear.
There are three models
in the high
resolution series: the HRS-8, HRS-1 0,
and the HRS-12. (The number represents
the driver diameter
in inches.) The control
panel, connections and operation are the
same for each subwoofer model, and this
manual covers all three models.
Each subwoofer has controls for adjust-
ing the crossover frequency, phase, and
volume. They also have line-level and
speaker-level inputs for easy incorpor-
ation into existing systems, or as part
of a
subwoofer/satellite speaker combination.
The Driver
To have lots of bass requires the move-
ment of lots of air. To achieve this, the
subwoofer's driver has been designed to
travel back and forth approximately five
times further than a normal driver. This
gives lots
of air movement and massive
bass performance.
The Tracking Downconverter
Amplifier
The large movement range of the driver
generates greater air pressure inside the
box than a conventional driver.
In order
to create this range of movement, we
designed a drive amplifier that
is much
more powerful than an ordinary amplifier.
A signal compressor circuit kicks
in
automatically ifthe input signal level
reaches a level that would overload the
driver. This maintains a ceiling
on the
output without clipping.
Ifthe input signal is driven even further,
a 'soft clipping' circuit
is enabled. This
allows the driver to put more sound into
the room to satiate the power hungry
user, but without distortion or damage to
the driver. This produces extremely high
sound pressure levels (SPL)
in your room
without the driver banging against its
mechanical stops.
Sub/LFE
In this manual, the term "Sub/LFE" is
used to denote the subwoofer or Low
Frequency Effects output, commonly
found on Home Theater processors and
receivers.
Stuiflre User's Manual _____________________ ____., __ 5

Control Panel Features
5 6 7 8 9
10
1°
1-1®1_1_1_®
------....
SPEAKER-LEVEL
INPUTS
--INPUTS
-PHASE-
VOLUME---
NORMAL
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30HZ
BYPASS
o·
110"
MIN MAX
®
Sw?fire·
HRS-8
8" Powered
Subwoofer
1.
Power Indicator
This light is bright when the subwoofer
is
on, and dim when the subwoofer is
in
standby mode.
2.
Power Switch
Press the top
of
this rocker switch to
turn on the subwoofer.
The subwoofer has
an
automatic
signal-detection circuit. After approxi-
mately fifteen minutes with no signal,
the subwoofer will go into its quiet
standby mode. The presence
of
an
audio signal will turn it back on.
Normally you can leave the switch on,
and let the subwoofer turn on when a
signal is present, or off when it's not.
At night, or if you go out, or on vaca-
tion, you can press the bottom
of
the
power switch to turn the subwoofer off.
3.
IEC Power Connector
The subwoofer comes with a detach-
able linecord that attaches here. Make
sure it is firmly pushed into place.
Connect the other end to an AC outlet
that is properly configured for the type
of
plug and has the correct voltage for
your model.
3
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®[DJ:,
2
4
~ nsVT4AL210VACIOHZ
~
230V
TZ.&AL
250
VAC
50/BO
HZ
250WATTS
REPLACE
FUSE
W1TH
SAME
TYPE
AND
RATING
4. AC Line Fuse
The subwoofer is supplied with a
conservative slow-blow type fuse to
protect the.electronics. If this fuse fails,
replace it with the exact same type and
current rating for your local AC voltage,
as marked on the control panel near
the fuse holder.
Note: Always unplug the power
cord from yourAC outlet before
removing the fuse.
To
replace
or
inspect the fuse, use a small flat-
ended screwdriver to gently pry out
the fuseholder and fuse.
The AC voltage
of
the subwoofer
is determined by the orienta-
tion
of
the fuseholder. Make sure
the fuseholder is replaced
in
the
correct orientation if the fuse is
changed.
6
--*""""---------------------
SUJ?/ire
User's
Manual

5.
6.
7.
Speaker-Level Inputs
If you are using a receiver that only
has speaker-level outputs, connect it
using the speaker-level inputs (see the
hookup diagram on page 14). They can
accept bare wire, banana, or dual-ba-
nana connectors.
If you experience excessive noise or·
hum using the line-level inputs, try us-
ing the speaker-level inputs. This may
lower the background noise level.
Line-Level Inputs
These connect with RCA type cables
from the line-level outputs
of
your
receiver or preamp. Here are two
examples:
If your processor or receiver has a
single subwoofer output, connect it
to the subwoofer's left input jack (see
page
11
).
There is no need to use the
subwoofer's right input jack.
If your processor does not have a
subwoofer output, use "Y" adapters at
the processor outputs (see page 12).
In
this way, you can send the processor's
full-range output signals to your main
amplifier and to the subwoofer at the
same time.
High-Pass Outputs
Signals from these output jacks are a
direct copy
of
the signals going into the
input jacks
of
the subwoofer, with the
exception that the bass below 70 Hz
has been removed by a fixed high-pass
crossover circuit. This handy feature
lets the subwoofer control all the bass
in
your system, and you can use an
external amplifier and smaller satellite
speakers to control the mids and highs.
(See the hookup diagram on page 13.)
We recommend using this high-pass
function with small main/satellite speak-
ers that are not designed to reproduce
low frequencies. Ifyou are used to the
sound from smaller speakers, this op-
tion will really bring your system alive.
8.
9.
If your main speakers are capable
of
operating full range, you will not need
to use the high-pass function.
Crossover Frequency
This controls the crossover frequency
between 30 Hz and 1
00 Hz. If it is set
to 30 Hz for example, the subwoofer
will reproduce those frequencies below
30 Hz. Rotating the control clockwise
will smoothly increase this frequency
range up to 100 Hz.
In
the bypass position, the crossover
control has no effect.
You
should set
this to bypass if your processor has its
own subwoofer crossover frequency
control.
If your processor does not have its own
subwoofer crossover frequency control,
rotate this control until the bass sounds
natural. If the mid-bass sounds natural
but you want more low bass, turn the
crossover frequency down a little, then
turn the volume up by about the same
amount. This increases the low-bass
output while leaving the mid-bass
output the same.
Phase
This controls the relative phase of the
subwoofer with respect to your other
speakers. Use this to help blend the
subwoofer with the rest
of
your system.
Adjust the control
in
small increments
as you I
isten for the most bass at
your listening position. As a final trim,
readjust the crossover frequency and
volume controls after the phase control
has been set.
10.Volume
This control lets you match the output
level ofthe subwoofer to the level
of your satellite/main speakers. The
subwoofer output will increase as this
control
is
rotated clockwise. When
installing your system, turn this down
first before turning on your subwoofer,
to prevent any loud surprises.
Sunjire
User's
Manual
----------------------~--7

Installation
Observe the following general precau-
tions and read the safety instructions
on pages 2 and 3 before using your
Subwoofer.
Heat
Never open the cabinet or remove
the metal control panel as this
might result
in an electrical shock to
you or damage to the unit.
Protect the subwoofer from
prolonged exposure to direct
sunlight and other direct sources
of heat, such as heating vents and
radiators.
To prevent fire or shock, do not
expose the unit to rain or moisture.
If fluid or a foreign object should
enter the unit, immediately turn off
the power and contact your Dealer.
Avoid excessive exposure to
extreme cold or dust.
Do not place heavy objects on top
of the unit.
Do not place the subwoofer with its
control panel against the floor.
Allow adequate ventilation around
the metal control panel
of the
subwoofer.
Let nothing come into contact with
the panel and keep it at least two
inches away from any walls.
The metal control plate serves as the
amplifier heat sink, and also removes
internal heat to the outside and into the
atmosphere. It can reach temperatures
of 60 degrees C, which feels hot to the
touch.
AC Power Considerations
Ensure that the subwoofer is plugged
into
an outlet capable of supplying the
correct voltage specified for your model.
Unplug your subwoofer's power cord
from the electrical outlet whenever you
leave the subwoofer unused for a long
period
of time.
II\ Note: Never remove the ground
~ pin from any power cords. This is
very dangerous.
Route the power supply cord away
from areas where it is likely to be walked
on, or pinched by items placed upon
it or against
it, especially near the AC
wall socket, any multi power strips, or
near where the IEC cord attaches to the
component.
Magnetic Fields
We recommend that you place your
subwoofer further than two feet away
from your
TV, VCR, tape deck or com-
puter, so the speaker's magnet won't
distort the colors of your TV picture or
erase your video tapes, audio tapes
or
computer discs.
8 --~---------------------- Surifjre User's Manual

Connections
Please consider the following when set-
ting up your new
system:
Before making or changing any
connections, ALWAYS make sure
that the subwoofer and your other
components are turned OFF. Turn
down the volume control
of both the
subwoofer and your processor
or
receiver.
Tape Deck
DVD
Preamplifier
Power strip
Amplifier
/
AC outlets on the same circuit breaker
Subwoofer
This diagram shows all the low
power components sharing a power
strip which is connected to the
same outlet used by the main power
amplifier.
The subwoofer is connected to an
outlet on the same circuit breaker,
provided that the total system
current draw does not exceed the
breaker current rating.
Whenever possible, keep the power
cords away from the signal cables
or speaker wires to prevent hum or
interference.
Choose reliable, high quality
interconnect cables. They should
be fully shielded and as short as
possible for the job. The longest
cable in your system will likely be to
the subwoofer, so choose a good
quality brand.
Some cables can be a very tight
fit and there is usually a preferred
method
of removing them. Some
have to be removed with a twisting
action. Be gentle, as twisting may
cause damage to the jacks
of the
subwoofer
or your other compo-
nents.
Speaker-level connections
The subwoofer's speaker-level in-
puts can accept speaker wires with
banana, dual-banana,
or bare wire.
Ifyou have banana-type connec-
tors on your speaker wire, tighten
the binding posts before inserting.
Make sure that the negative
speaker wires never touch the posi-
tive wires. This will short out and
possibly damage your amplifier
or
receiver.
The subwoofer's two negative
posts are joined internally (com-
• man-grounded). Your amplifier
or
receiver must also be internally
common-grounded
or you cannot
use this connection. Contact the
manufacturer
of your amplifier or
receiver to make sure its outputs
are common grounded.
SUJ?fire User's Manual ----------------------~-- 9

Location
Here is a neat trick to find the best
subwoofer location for your room:
1.
Start by placing it right
on
the seat
of your favorite couch or easy chair.
(This method is odd, but it is based
on
principles
of
acoustic physics).
2.
If the subwoofer is part
of
a Home
Theater system you can use the
calibration test tone (pink noise)
usually found
in
the processor/
receiver's setup menu; or you can
simply plug the outputs from a CD
player directly into the subwoofer's
line-level inputs, remembering to
turn down the volume level on the
subwoofer first, and then play-
ing some
of
your favorite music
samples containing heavy bass.
3.
Walk around the room listening.
Stand
in
all the locations where
you might place the subwoofer. Try
crouching down, particularly
in
the
corners. Find the place where the
subwoofer's bass output sounds
the loudest.
4.
Turn off the subwoofer and discon-
nect it from the power and from
your processor/receiver or CD
player. Next, install the subwoofer
in
the location you have just deter-
mined is best and remake all your
connections.
Although low frequencies are non-di-
rectional, factors such as room reflec-
tions, standing waves, resonance and ab-
sorption will strongly affect your subwoof-
er's performance. Moving the subwoofer
from one location to another can have a
major effect
on
the bass response.
Magnetic Fields
Remember to keep the subwoofer
at least two or three feet away from
any TV screen, computer, VCR or
magnetic tapes and discs. This will
reduce the chance
of
the magnetic fields
upsetting the TV screen or erasing your
magnetic media.
Using two Subwoofers
Ifyou wish to use two subwoofers, the
sound output will double (an increase
of
6 dB). Locate the subwoofers with one
in
each corner and experiment with the
location and phase control to achieve the
best bass response.
Always drive each subwoofer through
the left line-level input even though you
are driving one subwoofer with a right
channel drive and the other with a left
channel drive. If your preamplifier has a
single sub/LFE output, use a Y cable to
split it into two outputs.
1Q
--"'*-----------------------
Surifjre
User's
Manual

System Configurations
The following pages show some typical
connections that you might make
in
your
installation. They show how the inputs
and outputs
of
the Sunfire Subwoofer
are connected to your preamplifier or
receiver.
Connections
to
a preamplifier's
subwoofer
output
If your processor or receiver has
a subwoofer output (Sub/LFE), it
should be connected to the sub-
woofer's Left input as shown. This
is the simplest and recommended
connection.
Ifyou have a Home Theater pro-
cessor
or
receiver, it probably has
an
independent subwoofer volume
and crossover control. If so, you
should set the subwoofer's volume
control to 0 dB, set the crossover
to Bypass, and use the processor's
subwoofer level and frequency con-
trols for adjustments.
+ -
TO FRONT SPEAKERS
SUJ?fire
User's
Manual
---------------------.....--11

Connections using Y cables
If your processor does not have
a Sub/LFE output, you can use
"Y" cables (or Y adaptors) to send
its left and right main outputs
to both the subwoofer and your
amplifier.
The subwoofer will play the low
frequency range, and your front
speakers will play the full range.
Although bass is commonly
distributed evenly between left
and right channels (L+R bass),
movie soundtracks often contain
differential (L-R) bass. Ifthis is
not preserved, the bass
in
these scenes
sounds anemic. The
subwoofer utilizes
differential gain on
the left and right
inputs to retain both
the L+R and L-R
information.
Systems that do
not have a dedicated
Sub/LFE output
should use both
the left and the right
inputs as shown, for
the greatest bass impact.
+ -
TO FRONT SPEAKERS
12
__
......_
_____________________
Sunjire
User's
Manual

Using
the
line-level high-pass
outputs
If you are using a receiver or
processor which does not have
a Sub/LFE output, you can send
its left and right front output
into the subwoofer's Line-Level
inputs and then connect the
subwoofer's High-Pass outputs
to the inputs
of
your amplifier.
The subwoofer will play the
low frequencies, and your
amplifier and front speakers
will play the frequency range·
above the subwoofer's fixed
(70 Hz) high-pass crossover
point.
The signals com-
ing out of the sub-
woofer's high-pass
outputs are not
affected by any of
the controls. They
are just a copy of
the signals going
into the subwoofer
except that the
low bass
is
filtered
out. This uses
the subwoofer's
passive crossover
network, set at
70
Hz, rather than the
active network and other controls.
+ -
This is an excellent method if your
speakers are small satellites or mini-
monitors, and/or your power amplifier
is
of limited power, such as a tube amp. TO FRONT SPEAKERS
For the ultimate
in
computer sound
systems, connect the left and right audio
output from your computer sound card
into the subwoofer inputs. Connect the
sub's high-pass outputs to the inputs
of
your powered speakers.
You
may need
some RCA-to-mini plug adaptors to make
the connections. Adjust the sub's volume
control to match low-powered speakers.
See the note about magnetic fields on
page 10.
Sunjire
User's
Manual
----------------------~--13

Using the speaker-level inputs
If you are using a receiver that does
not have a subwoofer output or line-level
outputs (pre-outs), you can
connect its speaker out-
puts to the subwoofer's
speaker-level inputs. The
front speakers can still
be connected to your
receiver.
The subwoofer's
internal amplifier supplies
the power to reproduce
the low frequency range.
It receives a sample
of
the signal
going to your
front speakers.
(An insignificant
fraction
of
your
receiver's power
is
transferred to
the subwoofer).
There is no
need to use the
speaker-level
inputs if you are
+
using a separate preamplifier/
processor and a power amplifier.
Such systems are best connected
using the line-level inputs as shown
in
the previous diagrams. However,
if you are using the line-level inputs
and there is a excessive amount
TO FRONT SPEAKERS
of
noise or hum present, using the
speaker-level inputs may yield a
lower background noise level.
The subwoofer's two negative
posts are joined internally (com-
mon-grounded). Your receiver/pow-
er amplifer must also
be
internally
common-grounded or you cannot
use this connection. Contact the
manufacturer of your receiver to
make sure its outputs are common
grounded.
14
__
..,.__
______________________
SUJ?fire
User's
Manual

Adjusting the controls
There are two main methods for adjust-
ing the volume, crossover frequency and
phase controls to match a system:
Preferred method: By listening and
making the adjustments to suit your
taste.
Laboratory method: By measur-
ing the output with a microphone
and adjusting for a flat frequency
response.
Excellent results can be obtained if you
make the adjustments based on simply
listening. This is our preferred method as
it allows the system to be voiced based
on what sounds the best, whereas labo-
ratory-flat frequency response can often
be clinical and less than exciting.
The following procedure is for those
who prefer a more methodical and scien-
tific approach. This excerpt is from "The
Audio Critic," issue 24, page 31, written
by contributing editor David Rich, and is
reprinted here with their kind permission.
You will need a test CD with low-fre-
quency warble tones, and a sound pres-
sure-level meter. The Radio
Shack®
SPL
meter will do fine, as will the
Stereophife®
test CD.
"Step
1.
Disconnect the subwoofer
and run the main speaker with a tone
in
its passband (80-1 00 Hz). Measure the
level.
Step
2.
Disconnect the main speaker
and reconnect the subwoofer. Set the
subwoofer to its highest crossover
frequency. Set the volume control
of
the
subwoofer to give the same sound pres-
sure level with the.same tone you used
in
Step
1.
Step
3.
With both the subwoofer and
the main speaker connected, measure
the level
of
the tones at the available
frequencies. Because the crossover
is set too high, you will have a peaked
response. Adjust the crossover control to
get the smoothest response.
Step
4.
Use the phase control to make
the response even smoother. It has its
biggest effect at the crossover frequency.
You
can iterate between the crossover
and the phase controls. Keep your hands
off the volume control! It was set correctly
in
step
2.
Step
5.
Listen to the subwoofer. Resist
all temptations to turn up the volume
control. Play something with really deep
bass to confirm that your subwoofer is
working."
Record
your
favorite
settings
here:
CROSSOVER
FREQUENCY
NORMAL
PHASE VOLUME
65HZ
90°
0 dB
ffiOOHffi
ffi
30 HZ BYPASS
0°
180°
MIN
MAX
Note:
Some Home Theater processors and
receivers have
an
internal crossover
adjustment which allows you to vary how
much
of
the bass frequency range
is
sent
to the
su
bwoofer.
In
these systems, it
is
recommended
that you set your subwoofer's own
crossover control to maximum frequency,
or "Bypass."
You
can then make any
crossover frequency adjustments using
your Home Theater processor or receiver
controls.
If the subwoofer's internal crossover
is set to a frequency lower than the one
on your Home Theater processor or
receiver, there would
be
a hole
in
the
mid-bass, and bass information would
be
missing.
SUJ?fire
User's
Manual
----------------------*---15

Specifications
Amplifier
Output
1,
000 watts rms
High
Cut
Filter
30
Hz
-100 Hz adjustable. The
crossover can be bypassed by rotating
the crossover frequency control fully
clockwise.
Frequency
Response
HRS-8
HRS-10
HRS-12
22Hz-100Hz
20Hz-100Hz
18Hz-100Hz
Power
Line
Voltage
115 VAC 50/60 Hz version
230 VAC 50/60 Hz version
Dimensions
HRS-8
HRS-10
HRS-12
Weight
HRS-8
HRS-10
HRS-12
Finish
1
0.0" (254 mm) cubed
11.5" (292.1 mm) cubed
13.5" (343 mm) cubed
28 lbs (12.7 kg)
34 lbs (15.4 kg)
38 llbs (17.2 kg)
High-gloss black cabinet, black anod-
ized amp plate, black fabric grill.
Line
power
consumption:
600 watts average, at maximum continu-.
ous output, 18 to 1
00 Hz.
2,000 watts peak, time limited basis.
Output
levels:
Peak SPL (including room gain):
HRS-8
102dB
HRS-10 105
dB
HRS-12 108 dB
Input
sensitivity
for
full
output:
240 mVrms from left input with volume
control at 0 dB, 90 mVrms with volume
control fully clockwise.
0.48 Vrms from right input with volume
control at 0 dB, 180 mVrms with volume
control fully clockwise.
Input
impedance:
30
KQ
for Line-Level inputs
5.6
KQ
for speaker
or
Hi-Level inputs
Drivers:
HRS-8 8" (203.2 mm)
HRS-10 10" (254 mm)
HRS-12 12" (304.8 mm)
Extra-large magnet and long throw
mechanical design yields very high
back-emf. The result is extraordinarily
high operating
efficiency-
that is, more
acoustic output for each watt
of
input.
Internal
system
gain:
42 dB from left input
jack
to subwoofer
with volume control at
OdB.
54 dB with control fully clockwise.
36 dB from right input
jack
to subwoofer
with volume control at
OdB,
48 dB with control fully clockwise.
© 2009 Sunfire, a division
of
Elan Home
Systems, LLC.
All rights reserved. Sunfire reserves the
right to improve its products at any time.
Therefore, specifications are subject to
change without notice.
Manual 913-140-00 Rev D
16
-~E--------------------
SU1?/ire
User's
Manual

Troubleshooting
This subwoofer has been designed and
built to provide years
of
trouble-free per-
formance. Most problems that occur can
usually be solved by checking your setup,
or by making sure that the components
connected to the amplifier are on and fully
operational.
The following information will help you
deal with common problems you may ex-
perience during normal use. Ifa problem
persists, please contact your Dealer for
assistance.
Not enough bass
• Check that your processor's outputs are
connected to the subwoofer's line-level
inputs and not to the line-level high pass
outputs. Ifthey are connected to the out-
puts by mistake, the bass will be weak but
the subwoofer will still function.
• If your processor has a single subwoofer/
LFE output jack, make sure it connects
to the subwoofer's Left input. If the bass
is still not enough after checking all the
remaining points, use a Y cable to connect
the processor's single subwoofer/LFE out-
put to the subwoofer's left and right inputs.
• Try moving the subwoofer to a different
location. See Location
on
page 10. Plac-
ing it in a corner will maximize the bass
output and give the smoothest possible
response.
• Home Theater processors usually have a
way
of
adjusting the level
of
the sub-
woofer/LFE output, either using a remote
control
or
with a small volume knob
on
the
back panel. Make sure that this is adjusted
correctly.
• Check that your processor or receiver's
sub output
is
turned on. Some systems
only have a sub output signal when the
front speakers are set to "small."
• Ifthe processor's Sub/LFE output has an
adjustable crossover frequency, make
sure that the subwoofer's own crossover
point is set to Bypass or part ofthe bass
range may be missing.
Not enough bass
in
a
5.1
system
•
5.1
Home Theater processors usually
have a bass management system which
allows the bass to be redirected among
your speakers. For example, the bass nor-
mally present
in
the front speakers can be
redirected to play
in
the subwoofer, or the
subwoofer can play the bass from all the
speakers,
in
addition to its dedicated LFE
(low frequency effects) channel. Make
sure that all
of
the bass management op-
tions are correctly set. The processor may
have a way
of
turning the subwoofer out-
put off entirely, so check that it
is
always
on.
• Check that the processor calibration pro-
cedure
is
correctly adjusted. Usually, the
preamp will send a test tone through all
the speakers
in
your system, allowing you
to adjust (trim) the volume
of
each channel
until they are all playing at the same level.
• If the bass
is
weak only when playing
5.1
surround sources, check that your
processor
is
correctly set to decode the
5.1
surround modes, such as Dolby Digital
or DTS.
• Some DVD discs have a menu which
allows you to select which soundtrack to
play. Check that the correct
5.1
surround
audio soundtrack
is
selected, otherwise it
may just play stereo into your preamp and
you won't get the true LFE signal into the
subwoofer.
SUJ?/ire
User's
Manual
-----------------------+--17

Hum
Adding any component such as a sub-
woofer to
an
existing system will often give
rise to a hum which wasn't there before.
Your first thought may
be
that the sub-
woofer has a problem, but this is more than
likely caused by a "ground-loop"
in
your
system.
Follow these steps to isolate the main
cause of the ground-loop hum (there may
even be more than one cause).
• Try to have all of your equipment on the
same electrical outlet or circuit, provided
that the total current draw does not ex-
ceed the current safety rating ofthe outlet
or circuit.
• Ifyour subwoofer
is
a fair distance away
from your other equipment, you may use
a 15 amp extension cord as long as it has
a ground connection.
• Turn off all components
in
your system,
including the subwoofer, amplifiers and
the processor, before disconnecting or
connecting cables.
• First remove every connection from the
subwoofer to the rest
of
your system.
Plug the subwoofer power cord back
in
and check for the hum. If it is still there,
try plugging it into a different outlet
in
case it is picking up interference on the
AC line.
• If you have followed the above guidelines
for the power connections and a hum is
still present, then there
is
one very com-
mon problem to consider: a "ground-loop"
introduced by connecting a cable TV line
to a VCR or
TV,
which
is
then connected
to the preamp. This can be addressed as
follows:
• Disconnect all cables which come from
outside the room, such as cable
TV,
satellite
TV,
or roof top antennas. Make
sure that they are disconnected where
they first enter the room, so they are
making no connection to your processor,
TV,
or any other component. If the hum
is
caused by the cable TV line, then you will
need a "ground-loop isolator." This is an
inexpensive device fitted
in
line with the
coaxial cable feed.
• If the hum persists, disconnect all the
source components one at a time from
the back of the processor until you iden-
tify the problem.
• If you are using the subwoofer's line-level
inputs and there is a excessive amount
of
noise or hum present, try using the
speaker-level inputs as they may yield a
lower background noise level.
• Ground-loop isolators are available for
audio lines and video. Once you have
identified which components are causing a
problem, you can fit the isolators between
the component and the preamp.
No
auto
turn
off
• The subwoofer should turn itself off after
approximately fifteen minutes with no
audio signal present. If not, check there is
no background hum. The subwoofer may
sense hum as a small signal and stay on.
See the above hints to eliminate the hum.
No
auto
turn
on
• The subwoofer's volume control may
be
turned down, or no signal is received from
your processor.
• Check the input connections.
• Check on surround systems to be certain
that a bass signal is being sent to the
subwoofer.
DECLARATION OF CONFORMITY,
ACCORDING TO
EN
45014
Manufacturer's
name: Sunfire
Manufacturer's
address:
1300
E.
New Circle Rd.,
Suite 150,
Lexington, KY USA
Declares
that
the
products
listed
on
this
declaration:
Product name(s): Amplified subwoofer speaker
Product Model Number(s): HRS-8,
HRS-10,
HRS-12
Conform
to
the
following
product
specifications:
Safety: IEC 60065:2001 JEN 60065:2002
EMC:
EN
55013:2001 +AI:2003+A2: 2006
EN
55020:2002 + Al:2003 + A2:2005
EN
61000-3-2:2000 + A2:2005
EN
61000-3-3:1995 + Al:2001 +A2:2005
The
product
hereinwith
complies
with
the
provisions
of
the
following
European
Directives
and
carries
the
CE
mark
accordingly:
Low voltage directive 73/231 EEC,
as
amended
Electromagnetic Compatibility Directive
89J3361 EEC, as amended
Supplementary
information:
The product was tested
in
a typical
configuration
Signed:
Mark Weisenberg
General Manager
Date 05/18/09
18
---+------------------------
SUJ?fire
User's
Manual

Sunfire Limited Warranty
Sunfire, a division
of
Elan Home Systems,
LLC, is proud
of
its products which have
been built with care using advanced technol-
ogy and premium component parts. Your
unit has been crafted to perform properly
for many years. Sunfire offers the following
Warranty to you, the owner
of
a new Sunfire
product:
Sunfire warrants the HRS subwoofer to be
free from defects
in
materials and workman-
ship for the period
of
ONE year from the
date
of
purchase. Ifwithin the applicable
warranty period above purchaser discovers
such item was not as warranted above and
promptly notifies Sunfire
in
writing, Sunfire
shall repair
or
replace the items at the
company's option.
This warranty shall not apply:
(a) to equipment not manufactured by
Sunfire.
(b) to equipment which shall have been
installed by other than an authorized
Sunfire installer.
(c) to installed equipment which is not
installed to Sunfire's specifications.
(d) to equipment which shall have been re-
paired
or
altered by others than Sunfire.
(e) to equipment which shall have been sub-
jected to negligence, accident, or dam-
age by circumstances beyond Sunfire's
control, including, but not limited to,
lightning, flood, electrical surge, tornado,
earthquake, or any other catastrophic
events beyond Sunfire's control,
or
to
improper operation, maintenance
or
storage,
or
to other than normal use
of
service.
With respect to equipment sold
by,
but not
manufactured by Sunfire, the warranty
obligations
of
Sunfire shall in all respects
conform and be limited to the warranty actu-
ally extended to Sunfire by its supplier. The
foregoing warranties do not cover reim-
bursement for labor, transportation, removal,
installation,
or
other expenses which may
be incurred in connection with repair
or
replacement.
Except as
may
be expressly provided and
authorized in writing by Sunfire, Sunfire shall
not be subject to any other obligations
or
liabilities whatsoever with respect to equip-
ment manufactured by Sunfire
or
services
rendered by Sunfire.
THE FOREGOING WARRANTIES ARE
EXCLUSIVE AND
IN
LIEU OF ALL OTHER
EXPRESSED AND IMPLIED WARRANTIES
EXCEPT WARRANTIES OF TITLE, IN-
CLUDING BUT NOT LIMITED TO IMPLIED
WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PUR-
POSE.
ATTENTION: TO
OUR
VALUED
CONSUMERS
To
insure
that
consumers
obtain
qual-
ity
pre-sale
and
after-sale
support
and
service,
Sunfire
products
are
sold
exclusively
through
authorized
dealers.
Sunfire
products
are
not
sold
online.
The
warranties
on
Sunfire
products
are
NOT
VALID
if
the
products
have
been
purchased
from
an
unauthorized
dealer
or
an
online
E-tailer. To
determine
if
your
Sunfire
re-seller
is
authorized,
please
call
Sunfire
at
[phone].
Service Assistance
We suggest that you read the Limited War-
ranty completely to fully understand your
Warranty/Service coverage.
If your Sunfire product ever requires service,
write to us or call:
Sunfire,
1300 E New Circle Road, Suite 150
Lexington, KY 40505
Phone [phone]
Fax: [phone]
You will be directed to an authorized Sunfire
Service Station
or
receive instructions to
ship the unit to the factory. Please save the
original shipping carton and packing materi-
als
in
case shipping is required. Please do
not ship Parcel Post.
I
NOTE: Before sending
in
your unit for repair, )
you must call Sunfire for return authorization.
Include a complete description
of
the prob-
lem, indicating how you have it connected,
the associated equipment
in
your system
and a copy
of
your purchase receipt. Initial
shipping costs are not paid by Sunfire;
return ground shipping costs will be prepaid
if repairs were covered by the scope
of
this
Warranty.
SUJ?!fre
User's
Manual
----------------------~--19

--IRS~
High Resolution Series
Subwoofer
HRS-8,
HRS-1
0,
andHRS-12
Sunfire
1300 E New Circle
Road
Phone: [phone]
Suite 150, Fax: [phone]
Lexington,
KY
40505 www.sunfire.com
Manual
part
number
913-140-00
Rev
0