Owner’s Manual
Seismix 1 and Seismix 3
Congratulations on choosing Krix
The Seismix 1 and Seismix 3 active subwoofers will complement existing Stereo or Home
Theatre systems producing an increase in low frequency performance for a deep experience.
The Seismix 1 and Seismix 3 are compatible with a variety of small to large sized, sealed
or vented, main/satellite speakers.
Your subwoofer is powered by an effi cient class-D amplifi er capable of delivering maximum output
with low distortion for sustained periods of listening enjoyment. The amplifi er module incorporates
a switch mode power supply (SMPS) for effi cient operation with less heat generation and consistent
performance regardless of mains voltage variations.
setup in brief
The following setup procedure will help you achieve the best
performance from your subwoofer:
1. controls and features
Familiarise yourself with the controls and features of your
subwoofer.
2. positioning
Determine a suitable location for your subwoofer unit.
3. connection and calibration
Connect your subwoofer to your system, adjust the settings on
your subwoofer to integrate its sound with your speakers and
room.
Listen to a variety of music/movies to assess the sound and
settings of your subwoofer.
4. listen and enjoy
Listen to your favourite music/movies and enjoy.
disclaimer
!
Please read the important safetly instructions on the back of this manual before you plug in your equipment.
Disclaimer
To the extent permissible by law:
1. All warranties, conditions, representations, promises and statements relating howsoever to this product whether express or implied and
whether in contract or tort are excluded to the extent permitted by law; and
2. Our liability to you under a condition or warranty (if any) implied into this sale and purchase agreement relating to this subwoofer by the
Trade Practices Act 1974 (as amended) or any other law (whether a law of Australia or any other country) other than a condition implied by
Section 69 of the said Act is limited at our option to:
- the replacement of the product; or
- the supply of an equivalent product; or
- the repair of the product.
If you do not accept the above conditions, return this product (in the original packaging) with proof of purchase for a full refund.
2
controls and features
volume
Adjusts the subwoofer’s output level.
phase
Allows the phase of the subwoofer to be
adjusted between 0° (normal) and 180°
(inverted).
low pass (Hz)
Adjusts the point as which higher frequencies
are fi ltered from the subwoofer.
power mode
When set to auto (default) the subwoofer
will automatically switch on when a signal is
present. After 10 minutes the subwoofer will
switch into standby if no signal is present.
loop through
Line level (unfi ltered) ouput.
line In
Line level stereo input.
3
positioning
The most ‘obvious’ position for your
subwoofer is not always the best
The bass produced by a subwoofer is omnidirectional and very hard for your ears to
localise. Therefore a subwoofer can be placed
virtually anywhere in your listening room
and provide the impression that the bass
is radiating from your main speakers. The
quality of bass however is affected by the
position of your subwoofer due to complex
acoustic interactions with your listening room.
Depth, punch, and integration with your main
speakers are all affected by the position of
your subwoofer. Experimentation is always
recommended to achieve the most satisfying
results.
A. Often the best place for a subwoofer is in a
corner at the front of your room. This position
generally provides the maximum output from
your subwoofer. If you subwoofer sounds
excessively ‘boomy’ in this location try moving
it out 20-50cm from the corner or along one
of the adjacent walls.
B. Placing you subwoofer along the front
wall of your room, within a metre of a front
speaker, is also a good option. In some setups
this will provide a smoother tonal balance than
corner placement. This position is particularly
good for smaller satellite/bookshelf speakers to
help integrate the sound of the subwoofer and
main speakers.
C. Some people prefer to hide their subwoofer
next to or behind a couch. Listeners on
the couch may enjoy the extra vibrations
felt through the couch, however the bass
produced from your subwoofer may be easier
to localise. Therefore it may be harder to
integrate the sound of your subwoofer with
your main speakers.
D. Placing your subwoofer away from your
walls can result in satisfying results but
maximum output from your subwoofer may
be reduced.
E. Subwoofers may also be placed inside
cabinetry. Please contact your Krix retailer
or Krix directly for suggestions with this
arrangement.
The subwoofer is not magnetically
!
shielded; do not place near CRT screens
(old style TVs), and magnetic media.
Avoid
!
!
placing your subwoofer near sources
of heat, direct sunlight, humidly etc.
The rear amplifi er panel can get hot,
ensure adequate ventilation. Read the
safety instruction on the back of this
manual for more details.
Tip
Many modern receivers include
automatic room correction features. It
is recommended that these correction
features are disabled, until an optimal
subwoofer position has been determined.
Tip
To get the most from your subwoofer
we recommend experimenting with the
following positioning technique:
Place your subwoofer in your central
listening position. (You may need to
purchase a long subwoofer input cable)
Disconnect all speakers other than the
subwoofer.
Play some music or a movie with heavy
bass content.
Move around your room, listening at
fl oor level. Note any changes in the tonal
quality of the bass.
Mark out one or more potential locations
that offer a smooth, extended sound or
a sound quality you enjoy. Relocate your
subwoofer to this location, reconnect
speakers, and listen again from your
central listening positioning. Permanently
locate your subwoofer to this new
location if you notice an improvement in
the sound quality from your subwoofer.
A
D
B
E
C
4
connection & calibration - AV receiver
connection and defaults
It is recommended that you use Line
Level RCA connections for home theatre
applications.
Ensure the main power switch is off and •
connect the mains power cord.
Set • volume on your subwoofer to middle
position.
Set • phase to 0°.
Set subwoofer• low pass to 200Hz
(bypass) setting. The AV receiver
will manage the crossover/low pass
frequency.
Set • power mode to auto (default)
Connect the subwoofer pre-out (SW) •
on your receiver/processor to the line
in L / LFE input on your subwoofer.
(see advanced connection methods for
alternatives)
Switch on mains power switch.•
At this time you may wish to perform •
the AV receiver’s automatic calibration
proceedure. Alternatively refer to the
manual setup procedure below.
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advanced connection methods:
one subwoofer - stereo connection
If your receiver has a stereo L & R subwoofer
output feature, connect both L & R outputs to
your subwoofers L & R line inputs.
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3
two (or more) subwoofers - mono connection
Using multiple subwoofers can be useful in
large or troublesome installations where more
uniform bass coverage is desired. If your
receiver has only one subwoofer output, use
the Seismix subwoofer loop through feature to
connect the multiple subwoofers.
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manual receiver setup
Ensure subwoofer is set to ON or YES in
your receiver setup (Refer to your receiver/
processor manual for more information)
Use default subwoofer channel level setting on
your receiver.
On your receiver select desired crossover
frequency/low pass setting. As guide use the
80Hz setting.
Tip
If your speakers are small (bass driver is
smaller than 5 1/4”) use a higher setting
(100Hz,120Hz,150Hz) to send more of
the bass information to your subwoofer.
Consult your receiver manual for further
bass management options and settings.
manual subwoofer calibration
When using the subwoofer in a home theatre
installation it is also benefi cial to listen to
movies with extended periods of low bass
(explosions, rumbles etc). This will allow
you to evaluate the ‘impact’ and ‘depth’ of
your subwoofer. It is also benefi cial to select
music that is familiar to you when carrying
out listening tests. As a suggestion play clean
unprocessed recordings that use double bass,
bass guitar, cellos, organ or kick drum etc. that
cover a wide bass spectrum.
Begin by playing the movie/music and slowly
adjust the volume dial on the subwoofer to
your desired level.
Tip
For fi nal tweaking of your subwoofer
level you may wish to sit in the
primary listening position and adjust
the subwoofer channel level using your
receiver’s remote control. (Refer to your
receiver’s manual for more information)
Now set the phase dial. The correct phase
setting will produce the most bass. You may
need to listen to a variety of recordings to hear
any subtle change in bass energy. If no change
in bass energy can be heard between phase
settings, set phase to 0° default position. Readjusted volume if necessary.
5
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left and right subwoofers - stereo connection
If your receiver has stereo line level subwoofer
outputs a left and right subwoofer may be
used to allow stereo low bass reproduction.
Connect each receiver sub output to the
corresponding subwoofer:
L sub out to the left subwoofer L(mono)input
R sub out to right subwoofer L(mono) input
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connection & calibration - stereo system
defaults
Ensure the main power switch is off and •
connect the mains power cord.
Set • volume on your subwoofer to middle
position.
Set • phase to 0°.
Select desired • low pass (crossover
frequency) setting on your subwoofer. As
a guide set the subwoofer lowpass to 20hz
above the main speakers low frequency
limit. (Refer to main speaker specifi cations
e.g. 60Hz -20Khz speaker would require
80Hz setting, shown left)
Set • power mode to auto (middle position).
3
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connection
Requires your amplifi er to feature L&R
!
pre-out connections.
Use two Y cables to connect the each •
Pre-out channel on your amplifi er
(or pre-amplifi er) to the corresponding
subwoofer and main amplifi er inputs.
If main-inputs are not present on your
amplifi er
subwoofer line inputs.
simply connect the pre-outputs to
calibration
It is benefi cial to select music that is familiar
to you when carrying out listening tests and
calibration procedures. As a suggestion play
clean unprocessed recordings that use double
bass, bass guitar, cellos, organ or kick drum etc
that cover a wide bass spectrum.
Begin by playing music and slowly adjust the
volume dial on the subwoofer to your desired
level. For fi nal tweaking of your subwoofer
level you may wish to sit in the primary
listening position and ask an assistant to adjust
the volume dial on your subwoofer.
Now set the phase dial. The correct phase
setting will produce the most bass. You may
need to listen to a variety of recordings to hear
any subtle change in bass energy. If no change
in bass energy can be heard between phase
settings, set phase to 0° default position. Readjust volume if necessary.
You may wish to fi ne-tune the crossover
frequency/low pass setting. This will vary
the amount of overlap from the subwoofer to
the main speakers and increase or decrease
the level at those frequencies. The effect is a
strengthening or weakening of the upper bass
region. Unpleasant ‘woody’ or ‘chesty’ sound
qualities may suggest the low pass setting
selected is too high. If the sound lacks ‘body’
the low pass setting selected may be too low.
Re-adjust low pass setting, volume and then
phase. Re-evaluate results.
6
specifi cation and features
additional features
Symetrix Vent
The Seismix subwoofer enclosure features
Symetrix bass refl ex venting, with the vent
exhibiting the same fl are radius internally and
externally. This lowers subwoofer distortion
and serves to reduce vent turbulence or
“chuffi ng” at high drive levels.
Clipping Protection
When faced with a signal peak which is in
excess of what the Seismix can accurately
reproduce, a limiter circuit activates to reduce
the level of the signal once it passes the preset
threshold. This permits the Seismix to perform
at high level with only a mild reduction in the
signal’s dynamic content.
Fault Protection
In the unlikely event that the amplifi er’s
temperature rises above 65 degrees celsius,
the amplfi er will shut-down until the
temperature drops below 65°C.
warranty
5 years warranty applies to the cabinet and
speaker.
1 year warranty applies to the amplifi er and
related internal electronics.
(Refer to the details on the warranty card
supplied)
queries
If you have any queries regarding the Seismix
Cube, the set up procedure or any other Krix
product, please contact your nearest Krix
retailer or Krix directly. Contact details are on
the back cover of this booklet.
Seismix 3 V6.0: specifi cations
Drivers
Bass Driver
Electronics
Amplifi er Power
Amplifi er S/N
Distortion
Line Level Inputs
General
Frequency Range
Output
Auto Power On / Off
Phase Select
Filters
Cabinet
Enclosure Type
Dimensions
Material
Finish
Weight
- Input to Speaker
Nominal 275mm (11”) diameter paper cone driver, 50mm long throw
voice coil, developed for high level, low frequency reinforcement
300 watts RMS into the nominal 4 ohm driver
Maximum instantaneous power 600 watts
>85dB
<0.2% - @ 200 watts RMS
Left Input (mono) 300mV RMS for maximum output
Left + Right Input (stereo) 150mV RMS for maximum output
22Hz - 200Hz (-6dB) in room response
122dB maximum SPL in room response
10 minute delay before switching to standby after no input signal
0° to 180° continuously variable (relative to input signal)
Lowpass fi lter 50-200Hz 2nd Order
Highpass fi lter to limit driver excursion below 26Hz
Bass refl ex, front vented
450mm high (inc. feet) x 360mm wide x 410mm deep (inc. grille)
17mm MDF
Vinyl or lacquered timber veneer
18kg
Seismix 1 V4.0: specifi cations
Drivers
Bass Driver
Electronics
Amplifi er Power
Amplifi er S/N
Distortion
Line Level Inputs
General
Frequency Range
Output
Auto Power On / Off
Phase Select
Filters
Cabinet
Enclosure Type
Dimensions
Material
Finish
Weight
Due to continued development specifi cations may change without notice.
- Input to Speaker
Nominal 200mm (8”) diameter paper cone driver, 38mm long throw
voice coil, developed for high level, low frequency reinforcement
200 watts RMS into the nominal 4 ohm driver
Maximum instantaneous power 400 watts
>85dB
<0.2% - @ 150 watts RMS
Left Input (mono) 200mV RMS for maximum output
Left + Right Input (stereo) 100mV RMS for maximum output
27Hz - 200Hz (-6dB) in room response
116dB maximum SPL in room response
10 minute delay before switching to standby after no input signal
0° to 180° continuously variable (relative to input signal)
Lowpass fi lter 50-200Hz 2nd Order
Highpass fi lter to limit driver excursion below 26Hz
Bass refl ex, down-fi ring vent
375mm high (inc. feet) x 295mm wide x 320mm deep
17mm MDF
Vinyl or lacquered timber veneer
11kg
7
Krix Loudspeakers Pty Ltd
14 Chapman Road
Hackham SA 5163
Australia
T 61 8 8384 3433
F 61 8 8384 3419
listen@krix.com Rev #10007
krix.com
Please read these important safety instructions before you plug in this equipment.
Please retain these instructions for future reference.
This equipment is manufactured to a very high standard and it should give you many years of reliable service. To minimise the chance of
any problem with this equipment, take note of the following:
This equipment uses electricity at very high voltages. To avoid injury to persons, fi re or damage to the unit:
• Do not use the unit near water (or something with water in it) or in the rain.
• Do not allow the unit to get wet.
• Clean the unit with a dry cloth only – do not use solvents. Unplug the unit before cleaning.
• Do not plug the unit into a power source other than the one specifi ed.
• Make sure the power cable is protected.
• Make sure the power cable is not being pinched and that it cannot be walked on.
• Never disconnect the ground prong on the mains plug.
• When removing the power plug from the power source, do not pull on the cord.
• Do not open the unit. Refer any service to qualifi ed service personnel.
• Do not place any thing or any part of your body into the unit.
This unit may get hot when it is being used. To avoid injury to persons, fi re or damage to the unit:
• Do not put the unit near any heating source.
• Keep the unit out of direct sunlight.
• Make sure all ventilation openings are clear.
• Do not cover unit with blankets or any other materials.
• Do not place unit against curtains or furnishings.
This equipment is heavy. To avoid injury to persons:
• Be careful when you lift the unit.
• Install the unit on the ground so that it cannot fall onto anyone.
This equipment can cause extreme vibrations. To avoid injury to persons, fi re or damage to the unit:
• Do not put the unit near things that might be damaged by vibration.
• Do not put the unit near things that might be moved by vibration (for example vases, candles or glass objects).
• Do not put objects on top of the unit.
This equipment is delicate. To avoid damage to the unit:
• If it starts to make a distorted or unusual noise, turn the volume down. If that makes no difference, turn the unit off and have it
checked by qualifi ed service personnel.
• If you are not going to use the unit for an extended period, unplug it from the wall socket.
• If there is a storm with lightning, unplug it from the wall socket.
• Never force any switches or controls. If they are diffi cult to operate, have the unit checked by qualifi ed service personnel.
• Do not put any objects on the unit.
Avoid damage to your hearing. You only have one set of ears!
All sound equipment is capable of damaging your hearing or the hearing of others. Exposing your hearing to high volume levels for
extended periods of time will cause permanent hearing damage. Even short periods at extremely high levels will cause permanent hearing
damage. Children’s hearing is especially sensitive and extra care should be taken when exposing children to high volume levels. Hearing
damage is cumulative and it may be too late when you fi nd out that your hearing has been damaged. We recommend that you avoid long
periods of exposure at excessive volume levels.
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