MR5mk3, MR6mk3, MR8mk3
Powered Studio Monitors
O W N E R ’ S M A N U A L
Contents
MRmk3 Features
•
Music-centric voicing perfect for modern mixing,
monitoring and multimedia applications
•
Enhanced waveguide system delivers unmatched
clarity and openness
•
Minimized reflections and diffractions for wider
sweet spot
•
Seamless transition from high to low frequencies
for a crystal clear mix image
•
Perfectly matched amps and drivers for optimized
performance
•
•
•
50 watts of Class A/B amplification [MR5mk3]
65 watts of Class A/B amplification [MR6mk3]
85 watts of Class A/B amplification [MR8mk3]
• 5.25" polypropylene woofer [MR5mk3]
•
•
6.5" polypropylene woofer [MR6mk3]
8" polypropylene woofer [MR8mk3]
•
High output with controlled low-frequency
performance
•
1" silk-dome tweeter
•
Superior transient response great for snares
and other fast-transient sources
•
•
Flexible inputs for simple connection to almost any
audio source
Customizable frequency control for your studio space
•
•
Two levels of bass boost
Boost/cut control over highs
•
Custom-tuned rear ports for smooth, even bass
extension
•
•
Rugged all-wood cabinet design built to last
Acoustically optimized with sound-tightening
acoustic absorption material
•
Add the companion MR10Smk3 studio subwoofer
for powerful, deep extended bass
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Part No. SW0979 Rev. C 05/15
©2015 LOUD Technologies Inc. All Rights Reserved.
3
Owner’s Manual
Designed To Enhance Your Sonic
Experience
Introduction
MRmk3 Series Powered Studio Monitors love music as
much as you do. Subject to an intensive music-centric
voicing process designed to connect you to the music,
the compact and affordable MRmk3 monitors are
specifically designed to enhance the mixing and
monitoring experience in any home or project studio.
The ability to reveal the character of your music
is the number one reason to get professional studio
monitors. MRmk3 monitors are packed with design
features to enhance this experience. From the added
punch and bass extension provided by the custom-
tuned ports to the rugged all-wood cabinet packed with
sound-tightening acoustic absorption material, you can
be confident that MRmk3 monitors are revealing the
full-range, natural character that your music deserves.
Optimizing features include an enhanced waveguide
system for a wider sweet spot and custom-tuned rear
porting for smooth, extended bass response.
Plus, MRmk3 monitors have customizable frequency
controls so you can dial in the perfect sound for your
space.
As Versatile As Your Application
All studio spaces are different. As such, having the
right connection types and customizable control over
your acoustics is necessary.
Designed from start to finish for music, MRmk3
monitors reveal the full range and natural character
that your music deserves.
That’s why MRmk3 monitors include acoustic controls
for dialing in the specific sound needed for your space.
Want more bass? Pump up the low end by up to 4 dB
to feel the difference. Or, boost / cut the highs to get
exactly the amount of sizzle and shimmer you desire.
A Brief History Of Time...
We have been designing and re-designing studio
monitors for over 15 years. Our talented engineering
team has now designed monitors that love music
as much as you do. Targeted at music lovers and
post-production studios alike, the new MRmk3
Series Powered Studio Monitors have been re-voiced
and re-kitted, offering unparalleled clarity and
unbelievable depth for today’s demanding home
project or post-production studio requirements.
What’s more, three types of input connectors
are provided [XLR, 1/4" and RCA] to interface
with virtually any application you may have.
Your studio deserves a professional monitoring system
with the flexibility and performance to up the level of
your music production.
A Variety Of Applications...
Music Is All That Matters
MRmk3 Series Powered Studio Monitors may be used
in a variety of applications. Some examples include:
When designing the MRmk3 Powered Studio Monitors,
we didn’t start on paper. Instead, we poured through
countless hours of music from every possible genre
and source. Next, we focused on acoustic optimization
with things like our minimum-diffraction waveguide
that delivers unmatched clarity and an open feel that
instantly connects you to the music. From perfectly
optimized electronics to amps and drivers custom-
matched for performance, MRmk3 monitors are
designed for your music.
•
Home and project studios – Music production for
solo artists, small bands and DJs. Post-production edit/
mix suites, recording, editing, mixdown, mastering of
everything from spoken word performances to full music
productions.
•
A/V broadcast studios – Live broadcast/streaming
of audio-only or AV content such as radio and TV.
Production/Post-production focused on podcasts
or other streaming audio. Voiceovers, too.
•
Video post-production – Edit suites for small
productions such as commercials, budget films
or multimedia for internet broadcast, etc.
•
Home theater and other multimedia – Music
and movie playback, video game sound system,
social function/party system, etc.
4
MR5mk3 / MR6mk3 / MR8mk3
Quick Start
An Extremely Important Note
on MRmk3 Bass Response and
Your Control Room
We realize that you can’t wait to hook up your MRmk3
Studio Monitors and try them out. Nevertheless, please
take the time to read this page NOW, and the rest can
wait until you’re good and ready.
MRmk3s achieve the best bass response in a
room that’s optimized for bass reproduction.
A lot of factors can conspire to thwart the
MRmk3s’ extended low frequency – including room shape,
room volume and acoustical treatment.
1. Turn the input level [6] control on the back of the
cabinet down (fully counterclockwise) before turning
on the monitor for the first time.
This is not a cop-out or an apology. It’s plain old
physics in action. Luckily we’ve armed you with some
compensating controls that you can use to optimize the
frequency response of the speakers in your particular
room. Consider the following:
2. Set the power switch [2] on the back panel off. This will
prevent you from accidentally connecting a hot signal
source to the monitor and getting a rude surprise.
Low-Frequency Response
3. Leave the low freq [4] and high freq [5] filter switches
at their normal positions.
When you put your MRmk3s in a corner or up against
walls, their bass characteristics change. The apparent
loudness of the low frequencies increases when the
monitors are placed close to a wall, and even more so
when they are placed in a corner.
4. Connect the line-level monitor signal from your mixer,
preamp, or other signal source to the input [3] jack
on the MRmk3 Studio Monitor (1⁄4", XLR, or RCA).
If you have placed the monitors away from the walls
and corners and you would like to hear a little more
bass, try setting the low freq filter [4] switch to the +2
dB position to provide a gentle boost to the woofer. If it’s
still not enough bass, try the +4 dB position to provide a
little more bass boost.
5. Connect the supplied AC power cord to the IEC socket
[1] on the back of the monitor. Plug the other end into
an AC outlet properly configured with the voltage
corresponding to the markings next to the IEC socket.
6. Start your signal source (8-track player, turntable,
CD player, DAW, or whatever), but leave the master
volume control on the mixer or preamp down.
High-Frequency Response
The MRmk3s are designed to provide a smooth
frequency response throughout the mid and high range.
Nevertheless, you may decide that you need a little more
or a little less high frequencies in your monitors while
you are mixing. The high freq filter [5] switch provides
a gentle boost or cut to the tweeter. Remember that
boosting the high frequencies in the monitors can result
in a duller mix, while reducing the high frequencies can
result in a brighter overall mix.
7. Turn on the power switch [2] on the MRmk3
.
The Running Man logo [8] on the front panel
will illuminate.
8. Slowly turn up the input level [6] control on the back of
the monitor to its fully clockwise position (MAX).
9. Adjust the master volume on the mixer or preamp to
a comfortably loud listening level. If the MRmk3 gets
loud really fast, turn down the input level control to its
center position (12 o’clock) to provide more volume
control on the mixer or preamp.
Additional Tidbits of Wisdom
• Never listen to loud music for prolonged periods.
Please see the Safety Instructions on page 2 for
information on hearing protection.
•
When you shut down your equipment, turn off the
MRmk3 studio monitors first to prevent thumps and
other noises generated by any upstream equipment from
coming out the speakers. When powering up, turn on
the monitors last.
Enjoy the silky smooth highs and authoritative,
commanding lows of the MRmk3. Then read the rest of
this manual.
• Save the shipping box! You may need it someday.
• Save your sales receipt in a safe place. It’s your
warranty!
5
Owner’s Manual
Press the right side of this switch down to put the
speaker into standby mode. It will not function, but
the circuits are still live. To remove AC power, either
turn off the AC supply, or unplug the power cord from
the speaker and the AC supply.
Rear Panel Description
This is where the signal is connected to the monitor
and adjustments are made to the frequency response of
the speakers to match the monitor’s location and the
room’s environment.
3. Signal Inputs
Connect the line-level signal from the mixer
(or other signal source) to one of these input jacks.
There are three types of input connectors to choose
from: balanced XLR, balanced 1/4-inch, and unbalanced
RCA. Since all three of them are connected together
electrically, do not connect more than one signal at a
time to the input jacks.
7
3
XLR
(BALANCED)
A balanced signal provides better noise rejection
and is the preferred method, especially if using a cable
longer than 20 feet (6 meters).
3
TRS
(BALANCED)
4
5
6
U
LOW FREQ
FILTER
HIGH FREQ
FILTER
3
They are wired as follows, according to standards
specified by the AES (Audio Engineering Society):
OFF
MAX
0
+2dB +4dB
–2dB
0
+2dB
RCA
(UNBALANCED)
(NORMAL)
(NORMAL)
LEVEL
INPUTS
SETTINGS
Balanced XLR
WARNINGN: OT
TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO
EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE. DO NOT REMOVE COVER. NO USER SERVICEABLE
POWER
Hot (+)
Cold (–)
Shield (Ground)
Pin 2
Pin 3
Pin 1
PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
RISK OF ELECTRIC SHOCK
DO NOT OPEN
AVIS:
N'OUVREZ PAS LA COUVERTURE. N'EXPOSEZ
LA PLUIE OU L'HUMIDITÉ.
AVIS: RISQUE DE CHOC ELECTRIQUE
-
NE PAS OUVRIR PAS CET ÉQUIPEMENT
À
À
SERIAL NUMBER
REVISION
ON
2
1
2
SHIELD
HOT
CAUTION: REPLACEWITHTHE SAME FUSE AND RATING.
DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE.
1
3
COLD
SHIELD
COLD
HOT
1
3
2
Balanced XLR Connectors
1. Power Connection and Fuse
Connect the power cord to this IEC socket securely,
and plug the other end into a live AC outlet. Make sure
the AC outlet has the correct voltage indicated next to
Balanced 1/4" TRS
Hot (+)
Cold (–)
Tip
Ring
the IEC socket
.
Shield (Ground)
Sleeve
Disconnecting the plug’s ground pin is
dangerous. Don’t do it!
RING SLEEVE
SLEEVE RINGTIP
TIP
The fuse is located behind the fuse cover, at the
bottom of the IEC socket. See the “Troubleshooting”
section on page 9 for information about replacing the
fuse.
RING
TIP
SLEEVE
Balanced 1/4" Connectors
Unbalanced RCA
2. Power Switch
Hot (+)
Tip
Sleeve
Press this switch left to turn the MRmk3 studio
monitor on. Make sure the level control [6] is down
before you turn it on. When the power switch is turned
on and the MRmk3 studio monitor is plugged into an
AC outlet, the Running Man logo on the front of the
monitor illuminates to let you know that it’s ready to go.
Shield (Ground)
SLEEVE
TIP
SLEEVE
TIP
RCA Unbalanced Connectors
6
For more information on these connectors, see
Download from Www.Somanuals.com. AAlpl Mpeannudailxs SBeoarnchpAangdeD1o1w.nload.
MR5mk3 / MR6mk3 / MR8mk3
4. Low Frequency Filter
6. Input Level
This switch tailors the overall low-frequency response
by +2 dB or +4 dB at 100 Hz.
The MRmk3 studio monitors expect a line-level signal
at its input. Use this control to adjust the sensitivity of
the input section according to the signal strength at its
input.
• For most applications, use the “0 (NORMAL)” setting.
This takes the equalization circuit out of the signal path.
• The MRmk3 studio monitors are designed to operate
with a +4 dBu signal when the input level control is in
the max position. In other words, wide open.
• Refer to the Quick Start section on page 5 for the
level-setting procedure.
• If a little extra low-frequency output is necessary, use
the +2 dB setting.
• If even more low-frequency output is necessary,
use the +4 dB setting. Remember how things work in
reverse, so boosting the deep bass content on playback
may actually decrease it in the final mix.
7. Custom-Tuned Rear Port
5. High Frequency Filter
The custom-tuned rear port uses the radiation from
the rear of the woofer cone to extend the low-frequency
response of the speaker. The size of the port is carefully
designed with respect to the volume of the cabinet
and the characteristics of the woofer to produce
low-frequency extension.
This switch tailors the overall high-frequency
response by:
2 dB at 3 kHz and above [MR5mk3]
2 dB at 3.25 kHz and above [MR6mk3]
2 dB at 3 kHz and above [MR8mk3]
Leave this switch in the “0 (NORMAL)” position
unless:
Front Panel Description
• You want to subtly brighten or darken the sound of the
speakers.
• Perhaps you have hearing loss caused by too many
nights in front of a double Marshall stack.
8. Running Man Logo LED
The Running Man logo illuminates when the power
switch [2] on the back of the MRmk3 studio monitor
is turned on and AC power is available at the mains
input [1].
• You just like to mix on the bright side or dull side.
If the mixes consistently sound dull or dark when
you listen elsewhere, this usually indicates that the
monitors are too bright, relative to your normal hearing.
A bit less high-frequency energy usually fixes this, and
the mix may be forced in this direction by reducing the
high-frequency output of the monitors by using the –2 dB
position of the switch.
Conversely, if the mixes are consistently too bright,
then adding some additional high-frequency energy in
the monitors satisfies your ears, and the resultant mix
has less HF content.
It’s a real rush to mix really loud. But remember that
the resulting mix only sounds good when you play it at
least that loud. However strange it may sound, mixes
made at lower levels sound even better when played
loud, perhaps even a bit bigger than life.
Get that sound level meter out. Decide what level to
mix at and use the meter to help keep mixing at that
level. Your ears will thank you, and your mixes will be
better for it.
8
7
Owner’s Manual
Protection Circuits
There are several protection mechanisms designed
into the MRmk3 studio monitors to safeguard the
speakers and amplifiers from inadvertent damage.
Input Signal Wiring
We recommend using high-quality, shielded cables
to connect the signal source to the signal input jack [3]
on MRmk3 studio monitors.
CAUTION: The protection circuits
are designed to prevent damage to the
speakers under reasonable and sensible
conditions. Should you choose to ignore the warning
signs (i.e., excessive distortion), you can still damage
the speakers in the MRmk3 studio monitors by
overdriving them. Such damage is beyond the scope
of the warranty.
Three types of input connectors are provided to
interface with virtually any application you may have:
• Balanced microphone cables work well with the
XLR input.
• Balanced TRS cables work well with the 1/4" input.
• Unbalanced phono cables work well with the RCA
input.
Overexcursion Protection
A 12 dB/octave high-pass filter below port tuning
just prior to the low-frequency amplifier prevents
very low frequencies from being amplified. Excessive
low-frequency energy below the usable frequency range
can damage the woofer by causing it to “bottom out,”
also known as overexcursion, which is equivalent
to a mechanical form of clipping.
NOTE: Route the cable away from AC power cords
and outlets. These are common sources for hum in an
audio signal. Wall warts and line lumps are especially
insidious hum inducers!
NOTE: In certain home theater applications, it may
be necessary to connect the speaker outputs from a
stereo receiver to the inputs of the MRmk3 studio
monitors if the receiver doesn’t have preamp outputs or
other line-level output connections.
Thermal Protection
All amplifiers produce heat. The MRmk3 studio
monitors are designed to be efficient both electrically
and thermally.
CAUTION: Do not attempt to connect a
speaker output directly to the input of the
MRmk3 studio monitor! Speaker levels are
much higher than line levels and can damage the input
circuitry in the MRmk3 studio monitors.
• If for some reason the heatsink gets too hot,
a thermal switch activates and turns off the amplifier.
This protection operates independently for the
low-frequency and high-frequency amplifiers.
Therefore, it is possible for only the low frequency or
high frequency amplifier to shut down while the other
remains on.
However, it is possible to insert a speaker-level to
line-level signal attenuator between the receiver’s
speaker output and the MRmk3 studio monitor’s input.
Any local authorized dealer should be able to assist,
or you can build your own.
• When the heatsink cools down to a safe temperature,
the thermal switch resets and normal operation
resumes.
More information (with illustrations!) may be found
in Appendix B on page 11.
• If the heatsink temperature again gets too hot, the
shutdown process repeats. Should this happen, make
sure that airflow to the rear of the cabinet is not
restricted.
Care and Cleaning
MRmk3 Reference Studio Monitors will provide many
years of reliable service if you follow these guidelines.
Integrated Magnetic Shielding
• Avoid exposing the monitors to moisture.
• Avoid exposure to extreme cold (below freezing
temperatures).
• Use a dry cloth to clean the cabinets. Only do this when
the power is turned off.
The MRmk3 studio monitors contain drivers with
large magnetic structures. The drivers’ magnets are
not shielded. Unshielded speakers can cause distortion
in both the shape and color of the picture if placed
too close to a CRT (cathode ray tube). If you have a
particularly sensitive computer monitor or TV screen,
it may be necessary to move the speakers a few inches
away.
8
MR5mk3 / MR6mk3 / MR8mk3
Appendix A: Service Information
If you think your MRmk3 Studio Monitor has
a problem, please check out the following
No Sound
• Is the Running Man logo [8] on the front panel
illuminated? If not, refer to “No Power” to the left.
• Is the input level [6] control turned up?
• Is the signal source turned up? Make sure the signal level
from the mixing console (or whatever device
immediately precedes the studio monitor) is high
enough to produce sound.
troubleshooting tips and do your best to confirm
the problem. Visit the Support section of our website
information such as FAQs and other documentation.
You may find the answer to the problem without having
to send your MRmk3 away.
• If it’s a stereo pair, try switching them around. For
example, if a left output is presumed dead, switch the
left and right cords at the monitor end. If the problem
switches sides, it’s not the monitor. It could be a bad
cable, or no signal from the mixer.
Troubleshooting
No Power
• Our favorite question: Is it plugged in?
• Make sure the power cord is securely seated in the IEC
socket [1] and plugged all the way into the AC outlet.
• Make sure the AC outlet is live (check with a tester or
lamp).
• Is the power [2] switch on the rear panel in the ON
position?
• Is the Running Man logo [8] on the front panel
illuminated? If not, make sure the AC outlet is live.
If so, refer to “No Sound” below.
Bad Sound
•
Is the input connector plugged completely into the jack?
If using a 1⁄4" plug, make sure it is plugged all the way in.
• Is it loud and distorted? Reduce the signal level at the
mixer.
• If possible, listen to the signal source with headphones
plugged into the preamp stage. If it sounds bad there,
it’s not the monitor.
• Too much bass or not enough bass? Move around the
room and see if the bass response changes. It’s possible
your listening position coincides with a room mode
where the low frequencies either become exaggerated
or nulled. If so, try moving the monitors to a different
position, or moving your listening position.
• If the power indicator is not illuminated, and you are
certain that the AC outlet is live, it is possible the fuse
has blown.
To remove and replace the fuse:
1. Disconnect the power cord from the IEC socket.
2. Remove the fuse drawer by prying it open with a
Noise/Hum/Buzz
small screwdriver. It will slide all the way out.
•
Check the signal cable between the mixer and the
monitor. Make sure all connections are secure. These
problems usually produce crackling noises, hum, or buzz.
•
If connecting an unbalanced output to the MRmk3
studio monitor’s balanced input, make sure the shield
is connected to the unbalanced ground of the source
and to pins 1 and 3 of the XLR.
• If a CATV cable is connected to the system, try
disconnecting it. If the hum goes away, call your cable
carrier to check for proper grounding of the cable.
FUSE
• Make sure the signal cable is not routed near AC cables,
power transformers, or other EMI sources (including
wall warts and line lumps!). These sources usually
produce hum.
3. Remove the fuse and replace it with an
equivalent-type fuse.
115 VAC: T 1 AL / 250 V
• Is there a light dimmer or other triac-based device on
the same AC circuit as the monitor? Dimmers cause
buzzing noises. Use an AC line filter or plug the monitor
into a different AC circuit.
230 VAC: T 500 mAL / 250 V [MR5mk3]
115 VAC: T 1.25 AL / 250 V
230 VAC: T 625 mAL / 250 V [MR6mk3]
• Excessive hiss is an indication of an incorrect gain
setting somewhere before the speaker.
115 VAC: T 2 AL / 250 V
230 VAC: T 1 AL / 250 V [MR8mk3]
• If possible, listen to the signal source with headphones
plugged in. If it sounds noisy there, it’s not the monitor.
4. Replace the fuse drawer by pushing it all the way
back into the IEC socket.
If two fuses blow in a row, then something is very wrong.
See the “Repair” section on the next page to find out
how to proceed.
9
Owner’s Manual
Repair
For warranty service, please refer to the warranty
information on page 15.
Non-warranty service is available at a factory-
authorized service center. To locate the nearest
Tech Support” and select “Locate a Service Center
or Distributor” [3]. Service for MRmk3s living
outside the United States may be obtained through
local dealers or distributors.
If you do not have access to our website, please call
our Tech Support department at 1-800-898-3211 (normal
business hours, Pacific Time), to explain the problem.
They will tell you where the nearest factory-authorized
service center is located in your area.
Need help with the MRmk3 Studio Monitor?
•
•
•
Email us at: [email protected].
Telephone 1-800-898-3211 to speak with one of our splendid technical support
chaps (Monday through Friday, normal business hours, Pacific Time).
10
MR5mk3 / MR6mk3 / MR8mk3
Appendix B: Connectors
Balanced XLR Input Connector
Unbalanced RCA Input Connector
XLR connectors are used to make balanced
connections to the MRmk3 studio monitors. They
are wired as follows, according to standards specified
by the AES (Audio Engineering Society).
RCA-type plugs (also known as phono plugs)
and jacks are often used in home stereo and video
equipment and in many other applications. They are
unbalanced and electrically equivalent to a 1/4" TS
phone plug.
Balanced XLR Input Connector
Pin 1 – Shield (Ground)
Unbalanced RCA Input Connector
Pin 2 – Positive (+ or hot)
Pin 3 – Negative (– or cold)
Tip – Positive (+ or hot)
Sleeve – Shield (Ground)
2
SHIELD
HOT
SLEEVE
TIP
SLEEVE
TIP
1
3
COLD
SHIELD
COLD
HOT
1
3
Unbalanced RCA Connectors
2
Balanced XLR Connectors
Balanced 1/4" TRS Input Connector
“TRS” stands for Tip-Ring-Sleeve, the three
connections available on a stereo 1/4" or balanced
phone jack or plug. TRS jacks and plugs are used
to make balanced connections to the MRmk3 studio
monitors.
Balanced 1/4" TRS Input Connector
Tip – Positive (+ or hot)
Ring – Negative (– or cold)
Sleeve – Shield (Ground)
RING SLEEVE
TIP
SLEEVE RINGTIP
RING
TIP
SLEEVE
Balanced 1/4" Connectors
11
Owner’s Manual
Appendix C: Technical Information
AC Power Requirements
MRmk3 Specifications
US:
120 VAC, 60 Hz
240 VAC, 50 Hz
220 VAC, 60 Hz
100 VAC, 50/60 Hz
Europe:
Korea:
Japan:
Acoustic Performance
Frequency Response (-3 dB):
57 Hz – 20 kHz [MR5mk3]
46 Hz – 20 kHz [MR6mk3]
38 Hz – 20 kHz [MR8mk3]
Note: MRmk3 monitors do not support multiple voltage
configurations. Make sure the voltage rating for your particular
model (as indicated on the rear panel near the IEC socket)
corresponds with your local AC mains voltage.
Frequency Response (-10 dB):
45 Hz – 20 kHz [MR5mk3]
38 Hz – 20 kHz [MR6mk3]
35 Hz – 20 kHz [MR8mk3]
AC Connector:
Fuse:
3-pin IEC 250 VAC, 16 A male
115 VAC: T 1 AL / 250 V
230 VAC: T 500 mAL / 250 V [MR5mk3]
Sound Pressure Level @ 1 meter, +4 dBu into Balanced Input:
102 dB SPL @ 1m [MR5mk3]
115 VAC: T 1.25 AL / 250 V
230 VAC: T 625 mAL / 250 V [MR6mk3]
105 dB SPL @ 1m [MR6mk3]
107 dB SPL @ 1m [MR8mk3]
115 VAC: T 2 AL / 250 V
230 VAC: T 1 AL / 250 V [MR8mk3]
Maximum SPL Per Pair:
108 dB SPL @ 1m [MR5mk3]
111 dB SPL @ 1m [MR6mk3]
113 dB SPL @ 1m [MR8mk3]
Power Consumption:
90 watts with music, loud mix
7 watts quiescent (idle) [MR5mk3]
Transducers
Low Frequency:
120 watts with music, loud mix
7 watts quiescent (idle) [MR6mk3]
5.25 in / 133 mm hyperbolic
curved cone woofer [MR5mk3]
6.5 in / 165 mm hyperbolic
curved cone woofer [MR6mk3]
8.0 in / 203 mm hyperbolic
curved cone woofer [MR8mk3]
150 watts with music, loud mix
10 watts quiescent (idle) [MR8mk3]
Physical Dimensions and Weight
MR5mk3:
High Frequency:
Neodymium magnet driven
1 in / 25 mm silk dome tweeter
Enclosure:
0.47 in / 12 mm thick MDF with
0.98 in / 25 mm MDF front panel
Amplifiers
Low Frequency Power:
30 watts, 4 Ω load,
60 watts peak [MR5mk3]
Dimensions:
Height:
11.3 in / 286 mm
7.8 in / 197 mm
10.9 in / 276 mm
12.1 lb / 5.5 kg
40 watts, 4 Ω load,
80 watts peak [MR6mk3]
Width:
Depth:
Weight:
55 watts, 4 Ω load,
110 watts peak [MR8mk3]
MR6mk3:
High Frequency Power:
20 watts, 8 Ω load,
40 watts peak [MR5mk3]
Enclosure:
0.47 in / 12 mm thick MDF with
0.98 in / 25 mm MDF front panel
25 watts, 8 Ω load,
50 watts peak [MR6mk3]
Dimensions:
Height:
12.7 in / 323 mm
8.7 in / 222 mm
12 in / 305 mm
15.9 lb / 7.2 kg
Width:
Depth:
Weight:
30 watts, 8 Ω load,
60 watts peak [MR8mk3]
Type:
Monolithic IC, Class AB with
DMOS power stage
MR8mk3:
Enclosure:
0.59 in / 15 mm thick MDF with
0.98 in / 25 mm MDF front panel
Electronic Crossover
Crossover Type:
24 dB/octave
Dimensions:
Height:
15.8 in / 400 mm
10.9 in / 277 mm
13.2 in / 336 mm
23.8 lb / 10.8 kg
Crossover Frequency:
3 kHz [MR5mk3]
3.25 kHz [MR6mk3]
3 kHz [MR8mk3]
Width:
Depth:
Weight:
Sensitivity:
+4 dBu at 300 Hz for full output
Damping:
Adiabatic batting [MR5/6/8mk3]
Input Impedance:
20 kΩ, balanced bridging;
10 kΩ unbalanced
Disclaimer
Equalization
LOUD Technologies is always striving to improve our products
by incorporating new and improved materials, components and
manufacturing methods. Therefore, we reserve the right to
change these specifications at any time without notice.
Low Frequency EQ:
+2 dB/+4 dB @ 100 Hz, shelving
High Frequency EQ:
2 dB @ 3 kHz, shelving [MR5mk3]
2 dB @ 3.25 kHz, shelving [MR6mk3]
2 dB @ 3 kHz, shelving [MR8mk3]
12
MR5mk3 / MR6mk3 / MR8mk3
MRmk3 Block Diagram
The following are trademarks or registered trademarks of LOUD Technologies Inc.: MR Series and the Running Man.
This manual also contains names and marks of other companies which belong to those respective companies,
and are hereby acknowledged.
©2015 LOUD Technologies Inc. All Rights Reserved.
14
MR5mk3 / MR6mk3 / MR8mk3
Limited Warranty
Please keep your sales receipt in a safe place.
This Limited Product Warranty (“Product Warranty”) is provided by LOUD Technologies Inc. (“LOUD”)
and is applicable to products purchased in the United States or Canada through a LOUD-authorized
reseller or dealer. The Product Warranty will not extend to anyone other than the original purchaser
of the product (hereinafter, “Customer,” “you” or “your”).
For products purchased outside the U.S. or Canada, please visit www.720trees.com to find contact
information for your local distributor, and information on any warranty coverage provided by the
distributor in your local market.
LOUD warrants to Customer that the product will be free from defects in materials and workmanship
under normal use during the Warranty Period. If the product fails to conform to the warranty then LOUD
or its authorized service representative will at its option, either repair or replace any such nonconforming
product, provided that Customer gives notice of the noncompliance within the Warranty Period to the
Company at: www.720trees.com or by calling LOUD technical support at 1.800.898.3211 (toll-free
in the U.S. and Canada) during normal business hours Pacific Time, excluding weekends or LOUD
holidays. Please retain the original dated sales receipt as evidence of the date of purchase. You will
need it to obtain any warranty service.
For full terms and conditions, as well as the specific duration of the Warranty for this product, please
visit www.720trees.com.
The Product Warranty, together with your invoice or receipt, and the terms and conditions located
at www.720trees.com constitutes the entire agreement, and supersedes any and all prior agreements
between LOUD and Customer related to the subject matter hereof. No amendment, modification
or waiver of any of the provisions of this Product Warranty will be valid unless set forth in a written
instrument signed by the party to be bound thereby.
Correct disposal of this product. This symbol indicates that this product should not be disposed of with your household waste, according to the WEEE Directive (2012/19/EU) and your national law. This product
should be handed over to an authorized collection site for recycling waste electrical and electronic equipment (EEE). Improper handling of this type of waste could have a possible negative impact on the environment and
human health due to potentially hazardous substances that are generally associated with EEE. At the same time, your cooperation in the correct disposal of this product will contribute to the effective usage of natural
resources. For more information about where you can drop off your waste equipment for recycling, please contact your local city office, waste authority, or your household waste disposal service.
15
Owner’s Manual
16220 Wood-Red Road NE
Woodinville, WA 98072 • USA
Phone: 425.487.4333
Toll-free: 800.898.3211
Fax: 425.487.4337
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