Elura TRI-SUBR8 User manual

ELURA
TRI-SUBR8
8˝ 400-WATT
POWERED SUBWOOFER
10˝ 500-WATT
POWERED SUBWOOFER
ELURA
TRI-SUBR10

2

3
Congratulations on your purchase of an Elura
Red Label Series TRI-SUBR8/TRI-SUBR10 pow-
ered subwoofer. It will give your stereo, or home
theater system unparalleled low frequency output.
Bass frequencies are critical to realistic sound
reproduction. After you’ve hooked up your TRI-
SUBR8/TRI-SUBR10 subwoofer, you’ll discover
just how much “punch” and depth you’ve been
missing. No matter what kind of music or videos
you listen to... whether you listen to it loud or soft,
you’ll experience sound that’s richer and fuller.
Bass guitar and string bass will have more impact.
You’ll be able to FEEL as well as hear percussion
– just the way you would at a live performance. If
you have an audio/video system, movies will come
alive with thunderous sound effects that were
never possible without the Elura TRI-SUBR8/TRI-
SUBR10.
The Elura TRI-SUBR8/TRI-SUBR10 is a self-pow
ered subwoofer that frees your receiver or power
amplifier from the power demands of reproducing
very low frequencies. To do this, the Elura TRI-
SUBR8/TRI-SUBR10 incorporates its own built-in
crossover system that automatically “assigns”
lower frequencies to its own power amplifier, con-
tained within the subwoofer enclosure.
The Elura TRI-SUBR8/TRI-SUBR10 has been met-
iculously designed and tested to insure high per-
formance, durability and longevity.
This manual is designed to take you step-by-
step through the hook-up and operating process.
This procedure is not difficult, but it IS slightly dif-
ferent than hooking up a line level component such
as a cassette deck or DVD player. Reading this
manual carefully will insure that you get maximum
performance from your Elura TRI-SUBR8/TRI-
SUBR10.
A. UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
B. AMPLIFIER PANEL T UR . . . . . . . . . . . . . . . . . 3
C. PLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
D. C NNECTI NS . . . . . . . . . . . . . . . . . . . . . . . . . 4
E. INITIAL LISTENING TESTS . . . . . . . . . . . . . . . 7
F. SPECIFICATI NS . . . . . . . . . . . . . . . . . . . . . . . 8
G. TR UBLESH TING & SERVICE . . . . . . . . . 8
H. WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
TABLE F C NTENTS
A. UNPACKING
Remove the Elura TRI-SUBR8/TRI-SUBR10 from
its packing carefully and inspect it for any shipping
damage. If you discover damage, contact your Elura
dealer or installer immediately.
If possible, save the carton and internal pack-
ing. It’s the best possible protection for your Elura
TRI-SUBR8/TRI-SUBR10 if you need to move it or
return it for service.
Keep your sales receipt in a secure place. It
helps establish the duration of your warranty and is
good for insurance purposes (just in case anything
happens to your stereo/home theater system).
Before actual hookup, you should familiarize yourself with the connections on the back of the
Elura TRI-SUBR8/TRI-SUBR10, as shown in Fig.1.
1. POWER INDICATOR. When the amplifier is ON, this indicator will be blue.
2. OFF/AUTO/ON SWITCH. This switch turns Elura TRI-SUBR8/TRI-SUBR10 on or into
AUTO mode. When this switch is in the AUTO position, the amplifier will stay turned on as long
as a signal is being fed to the subwoofer amplifier. Approximately 20 minutes after you stop
playing music or a video, the amplifier goes into STANDBY mode. When you again begin to
play music or a video, the amplifier will automatically turn on. With the switch in the ON mode
the amplifier will stay on indefinitely.
3. VOLUME CONTROL. Rotating this knob clockwise increases the output level of the sub-
woofer. To start out, make sure that the VOLU E is turned all the way down (fully counter-
clockwise). Later, after some initial listening tests, you can adjust the volume to your own taste.
However, care should be taken not to overdrive the subwoofer to the point of audible distortion.
4. CROSSOVER FREQUENC CONTROL. This control determines what lower part of the
frequency spectrum will be reproduced by the Elura TRI-SUBR8/TRI-SUBR10. It is a
“crossover” control. Rotating the knob sets the point where all lower frequencies will be han-
dled by the subwoofer.
As a starting point, set the control around 100 Hz if you are using left and right tower speakers,
150 Hz with bookshelf or small mini-speakers.
5. PHASE CONTROL. This control is used to set the subwoofer’s phase anywhere between
normal “0°” or reverse “180°” (out of phase). Once you determine the placement of the Elura
TRI-SUBR8/TRI-SUBR10, you will need to rotate this control for the best bass output for your
listening position. The physical location of your subwoofer and main speakers determines the
phase setting that will sound best at your main listening position.
6. LFE/SUBWOOFER/LOW LEVEL LINE IN (line level connections). These connections are
used if you have a preamplifier or a receiver/integrated amplifier which has LFE, subwoofer,
or line level outputs that follow the volume control, or to connect to the line-level audio output
of a flat panel TV.
7. POWER SWITCH. aster switch to turn the amplifier ON or OFF.
8. AC POWER CONNECTOR.
9. 110-120 VOLT OR 220-240 VOLT SWITCH. Set this switch to the appropriate voltage of
your home. (Note: Elura Subs are factory set at 110-120 volts.)
FIG. 1 – Elura TRI-SUBR8/TRI-SUBR10 rear panel
B. AMPLIFIER PANEL T UR
1
2
3
4
5
6
7
9
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All this technical jargon may sound confusing, but it basically means that you have a number
of options, each of which produces a different amount of bass. For example, if you like a lot of
heavy bass, consider putting the Elura TRI-SUBR8/TRI-SUBR10 into a corner. If you like
smoother, less-obvious bass, move the subwoofer out into the room. The main thing to
remember is that there is no “right” or “wrong” place to put the Elura TRI-SUBR8/TRI-SUBR10.
It all depends on how much bass you want.
Another reason to experiment – because low bass waves are very large (up to 40 feet or more
across!), they tend to cancel and reinforce each other, causing places in the room where there
is lots of bass and others where there isn’t very much at all. If you walk around your listening
room while playing music, you’ll probably discover these sorts of areas where bass is either
exaggerated or reduced. Needless to say, if your main listening area ends up in a “dead” space,
you will need to move the Elura TRI-SUBR8/TRI-SUBR10 so that bass is more normal.
Incidentally, moving the Elura TRI-SUBR8/TRI-SUBR10 around won’t affect the stereo imaging
of your main stereo system, so feel free to try various subwoofer positions.
Connecting to a wall plug
The Elura TRI-SUBR8/TRI-SUBR10 draws a moderately high amount of current. We do not rec-
ommend plugging it into a “convenience” outlet (switched or unswitched) that is often found on
the back of receivers and other stereo components.
Instead, connect the subwoofer ONLY to its own AC outlet. See items 9 and 10 in the Safety
Instructions on Page 2 of this manual.
D. C NNECTI NS
Three basic connection options
1. Connection to electronics with subwoofer or LFE output. If you own a surround sound
receiver or integrated amplifier with a subwoofer or LFE output, use ethod A as shown
in Fig. 3.
2. Connection to stereo preamp and amplifier. If you have separate preamp and amplifier,
use ethod B as shown in Fig. 4.
3. Connection to flat-panel TV. If you have a flat panel TV with stereo analog audio outputs,
use ethod C as shown in Fig. 5.
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FIG. 2 - Elura TRI-SUBR8/TRI-SUBR10 placement
Away from walls:
Normal bass
Against walls:
More bass
In corner:
Most bass
C. PLACEMENT
Where to position your
Elura TRI-SUBR8/TRI-SUBR10
The Elura TRI-SUBR8/TRI-SUBR10 operates at low
bass frequencies which are essentially omni-direc-
tional. That means you can place the Elura TRI-
SUBR8/ TRI-SUBR10 almost anywhere in a room
without compromising the effectiveness of your
main stereo speakers.
Four factors need to be considered:
1) distance from your main speakers;
2) distance from a wall outlet;
3) distance from your receiver, amplifier,
or flat panel TV; and
4) proximity to walls and corners.
5) CAUTION: The Elura TRI-SUBR8/TRI-SUBR10
are not magnetically-shielded. If used with an
older CRT monitor or TV, keep it at least 2 feet
from the monitor.
1. Distance from your main speakers. The best
placement for your subwoofer is on the same wall
as the main speakers, especially if you are match-
ing up with small bookshelf speakers. With tower
speakers, side wall or rear placement is also
acceptable.
2. Wall outlet. Since the Elura subwoofer requires
AC power, it must be placed where it will reach a
wall outlet. We don’t recommend extending that
range with an extension cord.
3. Connections to your receiver, amplifier, pre-
amplifier or flat panel TV. You will need to con-
nect the subwoofer to your receiver subwoofer out-
put or LFE output, flat panel TV, or preamp line
level outputs (see next page). You can basically
place the Elura TRI-SUBR8/TRI-SUBR10 anywhere
in a normal-sized room.
4. Proximity to walls and corners. Physical
placement of the subwoofer will have a definite
impact on the frequency response and the per-
ceived amount of Elura TRI-SUBR8/TRI-SUBR10
bass output. Because low frequencies have long
wavelengths, they are influenced by proximity to a
boundary such as a wall or floor.
See Fig. 2. When you place the Elura TRI-SUBR8/
TRI-SUBR10 well away from a wall, it will produce
bass at a certain level. ove the subwoofer close
to the wall, it will produce more output (about 3dB
more). Putting the subwoofer in a corner will
increase output another 3dB (6dB more than when
placed away from walls and corners).

FR NT
SPEAKERS
RIGHT LEFT
REAR
SPEAKERS
RIGHT LEFT
CENTER
SPEAKERS
RIGHT LEFT
SUBW FER
R LFE
UT
FIG. 3 - Hookup for Surround Sound
Receiver with a Subwoofer utput
Note: This connection method is only for receivers that have a
subwoofer or LFE output. You will need one line level RCA to RCA con-
nector cable long enough to reach from your receiver to your Elura TRI-
SUBR8/TRI-SUBR10 location. This should be available from your Elura
dealer or from radio supply stores.
1. IMP RTANT: Make sure that ALL system components including
the Elura TRI-SUBR8/TRI-SUBR10 are turned FF before proceeding.
2. Locate the subwoofer or LFE output connector on the rear of your
receiver and connect one end of the RCA line level cord to it.
3. Route the line cord to the subwoofer location (trying to minimize
Method A: Line level hookup steps for receivers with subwoofer connections
(Refer to Fig. 3 below)
SURR UND S UND RECEIVER
N TE: SEE ITEM 5 AB VE F R PR PER RECEIVER TYPE SWITCH SETTING
5
areas where it may be stepped on) and connect the other end directly to
the sub’s LFE input.
4. Connect your main (and surround speakers if applicable) to the
receiver according to the receiver’s owner’s manual.
5. Note: If you are using a Dolby Digital type receiver with built-in cross-
over, you must set the crossover frequency in your receiver (check your
receiver’s owner’s manual). Set the subwoofer’s crossover to 120 Hz.
6. You are now ready to put your Elura TRI-SUBR8/TRI-SUBR10 sub-
woofer into use. Skip to “E – INITIAL LISTENING TEST.”

6
1. IMP RTANT: Make sure that ALL system
components including the Elura TRI-
SUBR8/TRI-SUBR10 are turned FF before
proceeding.
2. Locate the LINE output RCA sockets on the
back of your preamplifier. These are typically
marked PRE, PRE OUT, LINE OUT or TO
POWER A P, depending on the make and
model of component.
3. Connect a set of high-quality line level RCA
male to dual female Y-connectors to the pre-
amp’s LINE OUT sockets. Then connect a
pair of high-quality line level cables from the Y
connectors to the left and right LINE IN of
your subwoofer. ake sure that left is con-
nected to left and right is connected to right.
4. Connect another set of connection cables
between Y-connectors and the AIN INPUTS
of your power amplifier. Again, make sure that
left is connected to left and right is connected to
right.
5. Connect your main speakers to the speaker
terminals on the back of your power amplifier.
6. You are now ready to put your Elura TRI-
SUBR8/TRI-SUBR10 subwoofer into use. Skip
to “E – INITIAL LISTENING TEST.”
Method B: Line level hookup steps for systems with preamplifier and power amplifier
(Refer to Fig. 4 below)
FIG.4 –
Method B, Line Level
Hook-up with Preamplifier
and Power Amplifier
Y C NNECT RS

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(Refer to Fig. 5 below)
1. IMP RTANT: Make sure that ALL system components in-
cluding the Elura TRI-SUBR8/TRI-SUBR10 are turned FF
before proceeding.
2. Connect a set of high-quality line level connection cables (patch
cords) between the TV analog audio output connectors and the
LINE IN sockets on the back of the Elura TRI-SUBR8/TRI-
SUBR10. ake sure that left is connected to left and right is con-
nected to right.
3. You are now ready to put your Elura TRI-SUBR8/TRI-SUBR10
subwoofer into use. Skip to “E – INITIAL LISTENING TEST.”
Method C: Line level hookup steps
for flat panel TVs It’s now time to introduce the Elura TRI-SUBR8/TRI-SUBR10 amplifier’s potent
and plentiful bass into your listening environment.
1. Double-check all connections.
2. ake sure that the volume controls on both the Elura TRI-SUBR8/TRI-SUBR10
and your receiver/integrated amp/preamp/TV are turned all the way down (fully
counterclockwise). Set the PHASE control to zero. Set the CROSSOVER FRE-
QUENCY knob to 100 Hz for normal operation.
3. Turn on your stereo/home theater system. THEN turn on the Elura TRI-SUBR8/
TRI-SUBR10. Confirm that the subwoofer’s blue POWER indicator is glowing. If
it isn’t, check the power connections between the Elura TRI-SUBR8/TRI-SUBR10
and the wall socket.
4. Play a musical selection or DVD that you are familiar with. Pick a song that
has regular low bass beats. Advance the receiver/ integrated amp/preamp/TV’s
volume control up to a normal listening level. If you don’t hear sound through your
main speakers, turn off the system and check connections. Also consult the trouble-
shooting tips on page 8.
5. If sound is indeed coming out of your main speakers, turn the Elura TRI-
SUBR8/TRI-SUBR10’s VOLU E control clockwise until you hear noticeable
additional bass. If you don’t hear bass by the time you have advanced the sub-
woofer’s VOLU E control halfway, turn off the system and check connections.
Also consult the troubleshooting tips on page 8.
6. Adjust the Elura TRI-SUBR8/TRI-SUBR10’s VOLU E control until you are sat-
isfied with the amount of bass. You may want to try several different albums, com-
pact discs, or DVDs while determining how high to adjust the Elura TRI-SUBR8/
TRI-SUBR10’s VOLU E. The amount of bass varies from CD to CD and DVDs.
7. Now that you have adjusted the quantity of bass via the volume, it’s time
to work on the quality of the bass with the CROSSOVER FREQUENCY control,
PHASE switch – and experimentation with Elura TRI-SUBR8/TRI-SUBR10 room
position.
• While playing music or a movie, move the subwoofer around, in and out of
corners, closer and farther from the wall, etc. as much as the power cord and
other connections will allow.
• Change the PHASE control between 0° - 180°, while someone sits in the main
listening position. Leave the control in the position where you like the bass most.
• Change the CROSSOVER FREQUENCY control (for Dolby Pro-Logic
receivers) to higher and lower settings. If the CROSSOVER FREQUENCY con-
trol is set too high, you’ll start to hear low midrange (voices and instruments)
through it. This will negatively affect the stereo imaging of your main speakers.
Lower the CROSSOVER FREQUENCY setting until you hear only bass from the
Elura TRI-SUBR8/TRI-SUBR10. If the CROSSOVER FREQUENCY control is
set too low, you simply won’t get much output from the subwoofer. ove it back
closer to 80Hz.
8. After you are satisfied with the output of your Elura TRI-SUBR8/TRI-SUBR10,
you can make all your volume settings through your main stereo system’s volume
control. The only time you might want to re-adjust the Elura TRI-SUBR8/TRI-
SUBR10’s VOLU E is when you encounter a musical selection or movie that has
abnormally low – or high – bass.
You can leave the Elura TRI-SUBR8/TRI-SUBR10 turned on and in AUTO mode
when not in use. It does not draw much power in this state and will be ready to
add low bass the moment you begin to play music.
Remember, you don’t have to do anything except leave the POWER switch in the
AUTO position. The Elura TRI-SUBR8/TRI-SUBR10 will automatically go into
STANDBY mode after approximately 20 minutes, when no music or movie is playing.
If you’re not using your system for a long period of time (such as when you’re on
vacation), turn the ASTER POWER switch to the OFF position.
E. INITIAL LISTENING TEST
FIG.5 – Method C, Line Level Hook-up with Flat Panel TV

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G. TR UBLESH TING
& SERVICE
Before returning your Elura TRI-SUBR8/TRI-
SUBR10 for service, you can save time (and
often embarrassment) by checking for a few
problems that are most often encountered.
Power light is not lit. No sound.
1. Is your Elura TRI-SUBR8/TRI-SUBR10 plugged
in to a live AC wall socket?
2. Is the power switch on?
3. Has the Elura TRI-SUBR8/TRI-SUBR10 over-
heated and shut off temporarily?
No sound from either set of speakers.
1. Are your other components turned on?
2. Is the receiver, preamp, or TV set to the appro-
priate input and is that sound source playing?
3. Do you have an unconnected tape monitor
selected?
4. Is the Elura TRI-SUBR8/TRI-SUBR10 correctly
connected to your receiver, preamplifier, inte-
grated amplifier, or TV and turned on?
Sound comes from main speakers but not
the subwoofer.
1. Is the Elura TRI-SUBR8/TRI-SUBR10 turned on
(power light in the blue mode) and VOLU E
control turned up?
2. Some digital receivers only send a sub out
signal when in the movie or digital mode. In the
2 channel (stereo music) mode, no sub out
signal is sent to the sub.
You may need to set your main speakers to
“small” mode in your receiver setup to get the
receiver’s subwoofer output to turn on. Check
your receiver’s owner’s manual for subwoofer
operation.
3. For digital receivers – make sure the sub-
woofer is “ON” and the subwoofer level is set
to “0 dB” or greater.
Sound comes from the subwoofer but not
your main speakers.
1. • Confirm that the power amplifier is turned on.
• Check the RCA patch cord
• Check the speaker wire connections between
the receiver and main or satellite speakers.
Bass is muffled or weak.
1. Check speaker wire polarity of all connections.
2. Reposition your subwoofer. At some points in
the room, its output may be cancelled by the
geometry of the room. oving the Elura
TRI-SUBR8/TRI-SUBR10 can eliminate this
problem. Please refer to Item 10 in the Safety
Instructions for conditions that ALWAYS re-
quire service by qualified personnel.
If you have tried all the above and still can’t get
the Elura TRI-SUBR8/TRI-SUBR10 to operate
properly, consult your dealer or contact STR
BRAND.
Amplifier
Digital (Class D) with switching power supply,
thermal protection, overload protection, soft
clipping, short circuit protection, high-efficency,
with low power consumption in standby mode.
Power
Elura TRI-SUBR8 400 watts R S,
600 watts peak
Elura TRI-SUBR10 500 watts R S,
850 watts peak
Input Connections: RCA L/R, LFE Line Level
Input Impedance: 18K ohms
System Design
Passive Radiator with Front-Firing Woofer
Woofer
Elura TRI-SUBR8: 8˝ High-Excursion,
2˝ (49.5mm) Voice-Coil, Woven Fiberglass
Cone with Rubber Surround
Elura TRI-SUBR10: 10˝ High-Excursion,
2.5˝ (65.5mm) Voice-Coil, Woven Fiberglass
Cone with Rubber Surround
Passive Radiators
Elura TRI-SUBR8: 2 - 8˝ Woven Fiberglass
Cones with Rubber Surrounds
Elura TRI-SUBR10: 2 - 10˝ Woven Fiberglass
Cones with Rubber Surrounds
Frequency Response
Elura TRI-SUBR8: 28Hz - 200 Hz Variable
Elura TRI-SUBR10: 24Hz - 200 Hz Variable
Crossover Control: 50 - 200 Hz Variable
Controls
Power, Volume, Off/Auto/On, Phase, Cross-
over Frequency, Operating Voltage Selection
Video-Shielded: No
Dimensions (including feet & grille)
Elura TRI-SUBR8: 11.4˝ H x 13˝ W x 12.7˝ D
(290mm H x 328mm W x 323mm D)
Elura TRI-SUBR10: 13.1˝ H x 14.5˝ W x 14˝ D
(333mm H x 370mm W x 359mm D)
Weight
Elura TRI-SUBR8: 29.8 lbs.
Elura TRI-SUBR10: 41.5 lbs.
Finish: High-Gloss Black
F. SPECIFICATI NS
Caring for Your Elura
TRI-SUBR8/TRI-SUBR10
The Elura TRI-SUBR8/TRI-SUBR10 enclosure
is finished in a very high-quality polyurethane
satin black finish that is both attractive and
excellent protection for the wood cabinet. To
remove dust, finger prints, and light water
marks you can use a soft, dry cloth. Never
use a solvent like paint thinner, Ketone, gaso-
line, EK, lighter fluid, etc., on the enclosure
surface or it will cause permanent damage.
H. PR DUCT
WARRANTY
The SELLER warrants the SUBR8/SUBR10
free from defects in the material and workman-
ship for 2 year from the date of purchase from
the SELLER or an authorized dealer. Should
this product fail to be in good working order
within 1 year warranty period, the SELLER, at
its option, repair or replace the unit, provided
that the unit has not been subjected to acci-
dent, disaster, abuse or any unauthorized
modifications including static discharge and
power surge. This warranty is offered by the
SELLER for its BUYER with direct transaction
only. This warranty does not apply to products
that have been abused, incorrectly installed,
modified, disassembled and/or repaired by
anyone other than Elura or our appointed repair
facility.
A unit that fails under conditions other than
those covered will be repaired at the current
price of parts and labor in effect at the time of
repair. Such repairs are warranted for 90 days
from the day of reshipment to the BUYER. If
the unit is delivered by mail, customers agree
to insure the unit or assume the risk of loss or
damage in transit. Under no circumstances will
a unit be accepted without a return authoriza-
tion number.
The warranty is in lieu of all other warranties
expressed or implied, including without limita-
tions, any other implied warranty or fitness or
merchantability for any particular purpose, all
of which are expressly disclaimed.
Proof of sale may be required in order to claim
warranty.
The content of this manual has been carefully
checked and is believed to be accurate.
However, the SELLER assumes no responsi-
bility for any inaccuracies that may be con-
tained in this manual. The SELLER will NOT
be liable for direct, indirect, incidental, special,
or consequential damages resulting from any
defect or omission in this manual, even if
advised of the possibility of such damages.
Also, the technical information contained here-
in regarding the SUBR8/SUBR10 features and
specifications are subject to change without
further notice.
www.elura.audio