MartinLogan FRESCO Specifications

MartinLogan FRESCO Specifications
F R E S C O™ i
u s e r ’ s
m a n u a l
the loudspeaker technology company
Contents and Introduction . . . . . . . . . . . . . . . . . . .2
Installation in Brief . . . . . . . . . . . . . . . . . . . . . . . .3
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Signal Connection
On Wall/Off Wall Switch
Mounting the Fresco i On A Wall or Ceiling. . . . . .5
Which Way Should It Rotate?
Preparing For Vertical Installation . . . . . . . . . . . . . . . 6
Preparing For Horizontal Installation
Changing the Direction of Rotation . . . . . . . . . . . . . . 7
Installing the Bracket Assembly . . . . . . . . . . . . . . . . . 8
Installing the Fresco i . . . . . . . . . . . . . . . . . . . . . . . . 9
Home Theater . . . . . . . . . . . . . . . . . . . . . . . . . . .13
ATF (Advanced Thin Film) . . . . . . . . . . . . . . . . . .14
Frequently Asked Questions and Troubleshooting 15
Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . .16
General Information . . . . . . . . . . . . . . . . . . . . . .17
Warranty and Registration
Serial Number
Glossary of Audio Terms . . . . . . . . . . . . . . . . . . .18
In accordance with the European Union WEEE (Waste
Electrical and Electronic Equipment) directive effective
August 13, 2005, we would like to notify you that this
product may contain regulated materials which upon
disposal, according to the WEEE directive, require
special reuse and recycling processing.
For this reason MartinLogan has arranged with our
distributors in European Union member nations to
collect and recycle this product at no cost to you.
To find your local distributor please contact the
dealer from whom you purchased this product, email
[email protected] or visit the distributor locator at
Please note, only this product itself falls under the WEEE
directive. When disposing of packaging and other
related shipping materials we encourage you to recycle
these items through the normal channels.
Contents & Introduction
Congratulations! You have invested in a new world
of music and home cinema!
The MartinLogan Fresco i represents the culmination of
an intensive, dedicated group research program directed
toward establishing a world class reference monitor utilizing
leading-edge technology, without compromising durability,
reliability, craftsmanship or aesthetic design.
The advantages of MartinLogan ATF (advanced thin film)
technology will present themselves to you from the moment
the sound begins. The box effect (a phenomenon similar
to cupping your hand around your mouth when speaking)
produced by dynamic drivers is absent and the natural
openness of the human voice comes through. Sounds
clearly define the area from where they were actually
created, not the area of the speaker that created them.
The materials in your new Fresco i speaker are of the
highest quality and will provide years of enduring
enjoyment and deepening respect. The cabinetry is
constructed from the highest quality HIPP (high-impact
polypropylene) to create an acoustically inert, high-density
This User’s Manual will explain in detail the operation
of your Fresco i speaker and the philosophy applied
to its design. A clear understanding of your speakers
will ensure that you obtain maximum performance and
pleasure from this most exacting transducer. It has been
designed and constructed to provide years of trouble-free
listening enjoyment.
We know you are eager to hear your new Fresco i
loudspeaker, so this section is provided to allow fast and
easy set up. Once you have it operational, please take
the time to read, in depth, the rest of the information in
this manual. It will give you perspective on how to attain
the greatest possible performance from this most exacting
Step 1: Unpacking
Remove your new Fresco i speaker from the packing.
If you should experience any difficulties in the setup or
operation of your Fresco i speaker, please refer to the
Operation or Mounting sections of this manual.
Step 3: Signal Connection
Use the best speaker cables you can. High quality cables,
available from your specialty dealer, are recommended
and will give you superior performance. Spade
connectors are suggested for optimum contact and ease
of installation.
Should you encounter a persistent problem that cannot
be resolved, please contact your authorized MartinLogan
dealer. They will provide you with the appropriate
technical analysis to alleviate the situation.
•Refer servicing to a qualified technician.
•To prevent fire or shock hazard, do not
expose this module to moisture.
•Turn amplifier off should any abnormal
conditions occur.
•Do not drive speaker beyond its rated power.
Step 2: Placement
Place the Fresco i near the desired location. Please see
the ‘Mounting the Fresco i On a Wall or Ceiling’ section
(page 5–12) for more placement details.
Attach your speaker cables to the signal input section on
the rear panel. Be consistent when connecting speaker
leads to the terminals on the back of the Fresco i. Take
great care to assign the same color to the (+) terminal
on both the speaker and the amplifier. Please see the ‘
Operation’ section (page 4) for more details.
Step 4: Listen and Enjoy
Now, you may turn on your system and enjoy!
The lightning bolt 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.
The exclamation point within an equilateral triangle
is intended to alert the user to the presence of
important operating and maintenance (servicing)
instructions in the literature accompanying the
Installation in Brief
Signal Connection
Use the best speaker cables you can. The length and type
of speaker cable used in your system will have an audible
effect. Under no circumstance should a wire of gauge
higher (thinner) than #16 be used. In general, the longer
the length used, the greater the necessity of a lower
gauge, and the lower the gauge, the better the sound.
A variety of speaker cables are now available whose
manufacturers claim better performance than standard
heavy gauge wire. We have verified this in many
cases, and the improvements available are often more
noticeable than the differences between wires of different
gauge. The effects of cables may be masked if the
equipment is not of the highest quality.
Connections are done at the signal input section on the
rear electronics panel of the Fresco i (see figure 1). Use
spade connectors for optimum contact. Make certain that
all of your connections are tight.
On Wall/Off Wall Switch
Fresco i features a unique 'on-wall/off-wall' switch that
tailors Fresco i's acoustic equalization to either installation
option by engaging specialized equalization that
improves the system matching. This is critical for effective
multichannel playback. Set this switch to On-Wall if the
Fresco i is mounted to a wall or ceiling. Set the switch to
Off Wall if the Fresco i is more than four inches from a
wall (see figure 1).
Due to the sophisticated materials used to create highresolution ATF™ (Advanced Thin Film) drivers your new
speakers require a 72–100 hour break-in period at 90
dB (moderate listening levels) before achieving optimum
performance characteristics. During this time you will
experience incremental audible improvements, finally
resulting in tonally balanced, clean, detailed sound.
Be consistent when connecting speaker leads to the
terminals on the back of the Fresco i. Take great care to
assign the same color to the (+) terminal on both the
speaker and the amplifier.
WARNING! Turn your amplifier off before
making or breaking any signal connections!
Figure 1. Single wire connection. One channel shown.
Figure 2. The parts of the Fresco i bracket assembly.
NOTE: MartinLogan recommends using 5 wall anchors
to secure each Fresco i to a wall. During the installation,
if any of the screw/wall anchor positions are over a stud,
it is recommended to screw directly into the stud.
NOTE: To assure that your Fresco i is safely wall
mounted, these instructions must be carefully followed.
Study them thoroughly before installing your Fresco i's.
Figure 3. Vertical Installation. Rotation direction for various installation
NOTE: The following instructions assume the mounting
surface is standard wood frame and standard sheet rock
construction. If you wish to mount the Fresco i to another
type of material, you should consult a bonded contractor.
WARNING! Although installing the Fresco i on a
wall requires 1 person, an assistant will be helpful.
The bracket assembly shipped with the Fresco i
loudspeaker is designed for use only with the
Fresco i. Use with other appliances may result in
instability causing possible injury. To prevent injury,
this apparatus must be securely attached to the
wall in accordance with the installation instructions.
Which Way Should It Rotate?
Figure 4. Horizontal Installation. Rotation direction for various installation
The bracket assembly supplied with the Fresco i allows the
speaker to mount flat against a wall and pivot up to 90°.
Depending on the installation locations, the Fresco i
on-wall bracket will need to be modified to allow either
counter-clockwise/up or clockwise/down rotation (see
figure 3 and 4). The configuration of Fresco i’s bracket
assembly is identical for counter-clockwise and up
rotation and is identical for clockwise and down rotation.
Mounting the Fresco i On A Wall or Ceiling
Preparing For Vertical Installation
NOTE: Fresco i’s bracket assembly consists of two main
parts: the wall bracket (attaches to the wall) and the
cabinet bracket (attaches to the Fresco i). When correctly
configured the wall and cabinet brackets should each
have one pin installed—the wall bracket with an upward
pointing pin in the upper hinge, and the cabinet bracket
with a downward pointing pin in the lower hinge (see
figures 5 and 6).
(Right Rotation)
(Up Rotation)
NOTE: When correctly installed in a vertical orientation,
the Fresco i’s cabinet bracket (installed on the cabinet)
should slide down, onto the wall bracket (installed on the
Each Fresco i should be installed so that it can rotate to
point towards your listening position (see figure 3). Hold
each Fresco i near its desired location and try pivoting it
to assure that each speaker is correctly configured.
Preparing for Horizontal
Figure 5. Fresco i’s bracket assembly configured for right/up rotation
NOTE: Fresco i’s bracket assembly consists of two main
parts: the wall bracket (attaches to the wall) and the
cabinet bracket (attaches to the Fresco i). When correctly
configured each bracket should have one pin installed
—the wall bracket with a pin installed in the left hinge,
pointing to the left and the cabinet bracket with a pin
installed in the right hinge, pointing to the right (see
figures 5 and 6).
(Left Rotation)
(Down Rotation)
NOTE: When the Fresco i is correctly installed in a
horizontal orientation, gravity will pull on the speaker
trying to rotate down. The Fresco i bracket assembly
is designed in such a way that the force of gravity will
tighten the left cap nut and prevent the speaker from
Each Fresco i should be installed so that it can rotate to
point towards your listening position (see figure 4). Hold
each Fresco i near its desired location and try pivoting it
to assure that each speaker is correctly configured.
Figure 6. Fresco i’s bracket assembly configured for left/down rotation
Mounting the Fresco i On A Wall or Ceiling
Changing the Direction of Rotation
Required tools (included):
2.5mm Allen tool, 6mm Allen tool
NOTE: This procedure can be performed either with
the bracket assembly installed on the Fresco i cabinet or
with the bracket assembly uninstalled. For the purpose
of illustrating this procedure, the bracket assembly is
depicted installed on a cabinet.
1 Ignore this step if the bracket assembly is not installed
on the Fresco i. Prepare a flat surface with padding
and sheets to protect the speaker as you work on it.
Remove the Fresco i's grill cover and carefully place
the Fresco i face down on the work surface, using
books or pieces of cardboard to keep the speaker
from rocking.
Figure 8. Remove the wall bracket from the cabinet bracket.
2 Using the 6mm Allen tool, remove the 2 cap nuts and
washers from the hinges. Place them aside (see figure 7).
3 Carefully remove the wall bracket from the cabinet
bracket (see figure 8).
4 Using the 2.5mm Allen tool, carefully remove the 2 set
screws that hold the 2 hinge pins in place (see figure 9).
Figure 9. Remove the 2 set screws.
5 Move the wall bracket hinge pin to the outside of the
opposite hinge. Move the cabinet bracket hinge pin to
the outside of the opposite hinge (see figure 10).
6 Using the 2.5mm Allen tool, reinstall the 2 set screws
to lock the hinge pins in place. Make sure the set
screw tightens against the flat surface of the pin (see
figure 11).
7 Reinstall the washers and cap nuts.
Figure 7. Remove the 2 cap nuts and washers from the hinges.
Figure 10. Change hinge pin locations.
Figure 11. Reinstall the two set screws to hold hinge pins in place.
Mounting the Fresco i On A Wall or Ceiling
Installing the Bracket Assembly
Required hardware (included):
(6) M4 screws
Required tools (included):
2.5mm Allen tool
1 Prepare a flat surface with padding and sheets to
protect the speaker as you work on it. Remove the
Fresco i's grill cloth and carefully place the Fresco i
face down on the work surface.
Figure 12. Loose the 2 cap nuts.
2 Using the 6mm Allen tool, loosen the 2 cap nuts (see
figure 12).
3 Rotate/open the wall bracket away from the cabinet
bracket (see figure 13).
4 Align the 6 holes in the Fresco i's wall mounting
bracket with the holes on the back of the Fresco i's
cabinet. Please note that the wall bracket should lie
flat against the Fresco i cabinet with the hinges along
the flat, straight edge of the cabinet (see figure 14).
Figure 13. Rotate/open the wall bracket away from the cabinet bracket.
5 Using the 2.5MM Allen tool, install the 6 screws that
attach the cabinet bracket and firmly tighten them (see
figure 15).
Figure 14. Align the 6 holes on the mounting bracket with those of the Fresco
Figure 15. Install 6 screws.
Mounting the Fresco i On A Wall or Ceiling
Installing the Fresco i
Required hardware (included):
(5) wall anchors
(5) 1" Phillips head wood screws
Required tools (included):
6mm Allen tool
Required tools (not included):
Electric drill and 1/4" and 1/8" drill bits
Phillips screwdriver
1 Hold the Fresco i at the mounting location. Examine the
location to assure the wall is free of obstructions.
Test the direction of rotation to assure that the speaker
can rotate toward your listening position. If the speaker
rotates away from your listening position, please refer
to 'Which Direction Should It Rotate?' (page 5) and ‘
Changing the Direction of Rotation’ (page 7).
2 NOTE: These instructions describe the position of the
wall bracket with the Fresco i mounted flush against a
wall (not rotated on its bracket).
NOTE: The center point of the wall-bracket is not the
same as the center of the Fresco i. These directions
describe the location of the center of the wall-bracket,
which you will need to know in order to mount the
speaker at your desired location.
Figure 16. Determining the wall brackets center point in a vertical installation.
Determine where the center point of the wall bracket
should be marked (see figures 16 and 17).
Will the Fresco i remain flat against the wall? If so,
it can be installed flush against an object such as a
plasma screen (see figure18).
Will the Fresco i be rotated to point towards the
listening position? If so you need to leave space
between the nearest object to allow clearance for
the speaker to pivot (see figure 18). At least 6.75
” (17.2cm) of clearance will allow the Fresco i to
pivot within its full range of motion. Less space is
needed if the Fresco i does not need to fully rotate. As
recommended above, before drilling any holes, hold
the Fresco i at its desired location and rotate it into
place to assure you have adequate clearance.
Figure 17. Determining the wall brackets center point in a horizontal
Figure 18. Clearance requirements to allow rotation of the Fresco i.
Mounting the Fresco i On A Wall or Ceiling
Figure 19. Mark the center points.
Figure 20. Use a level to square the wall bracket and mark the other 4 holes.
NOTE: Figures 19–24 illustrate the Fresco i mounted in 4
different configurations.
4 Using a level, square the wall bracket and hold it flush
against the wall with the wall bracket's center hole over
the point you just marked. The cylindrical hinges on the
wall bracket should point away from the wall and the
flat plane of the wall bracket should be flush against
the wall. Mark 4 points inside of the wall bracket's
arc shaped cut outs located at either end of the wall
bracket (see figure 20).
3 Mark your wall with the center point for the wall bracket
(see figure 19).
Mounting the Fresco i On A Wall or Ceiling
Figure 21. Drill pilot holes and/or sink wall anchors at the 5 marked locations.
Figure 22. Using a level, square the wall bracket and install the screws.
5 Set the wall bracket aside. Using a 1/8" bit, drill a pilot
hole at all five points marked in the previous steps.
6 Mount the wall bracket to the center wall anchor (or
pilot hole) using a 1" Phillips head screw driven through
the wall brackets center point. Do not fully tighten the
screw—the bracket must be leveled before installing the
remaining screws (see figure 22).
If a pilot hole hits a stud during this step, DO NOT
WIDEN that pilot hole or install a wall anchor at that
If a pilot hole does not hit a stud, use a 1/4" bit to widen
that pilot hole and using a Phillips screwdriver install a
wall anchor so that it is flush with the wall (see figure 21).
7 Using a level, square the bracket and drive the four
remaining 1" Phillips head screws into the wall anchors
(or pilot holes). Do not fully tighten the screws (see
figure 22).
8 Using a level, make sure the bracket is level and tighten
all five screws (see figure 22).
Mounting the Fresco i On A Wall or Ceiling
Figure 23. Install the Fresco i and the washers and cap nuts.
Figure 24. Rotate the Fresco i into position and tighten the cap nuts.
9 Place the Fresco i onto the wall bracket and carefully
slide the Fresco i into place (see figure 23).
10 Using a 6mm Allen tool, attach a washer and cap nut
onto each pin. Do not fully tighten the cap nuts (see
figure 23).
11 Make the signal connections from the amplifier (see ‘
Operation’, pages 4).
Figure 25. Rotate the Fresco i’s logo medallion so it is correctly orientated.
12 Rotate the Fresco i to point at the listening position and
tighten the cap nuts (see figure 24).
13 Rotate the Fresco i’s logo medallion, by removing the
grill cloth cover, gently pressing the medallion from
behind and turning it to the correct orientation (see
figure 25).
Mounting the Fresco i On A Wall or Ceiling
It had long been the practice of stereo buffs to connect their
television to a stereo system. The advantage was the use
of the larger speakers and more powerful amplifier of the
stereo system. Even though the sound was greatly improved,
it was still mono and limited by the broadcast signal.
In the late 1970’s and early 1980’s two new home
movie formats became widely available to the public:
VCR and laser disc.
By 1985, both formats had developed into very high quality
audio/video sources. In fact, the sonic performance of some
video formats exceeded audio-only formats. Now, with
theater-quality sound available at home, the only element
missing was the "surround sound" presentation found in
movie houses.
Surround Speakers
We recommend (along with the film industry) that the
surround speakers play down to at least 80 Hz. Surround
speakers contain the information that makes it appear
that planes are flying over your head. In the past some
people suggested that this is the place to save money and
purchase a small, inexpensive speaker. Now with the
proliferation of discrete multi-channel digital encoding
the demands on surround speakers have increased.
With any good surround system you will need one or
more high-quality subwoofers (the .1 in a 5.1 channel
surround system). Most movie soundtracks contain large
amounts of bass information as part of the special effects.
Good subwoofers will provide a foundation for the rest of
the system.
Fortunately almost all films are Dolby and DTS encoded
and have the same surround sound information encoded
on home releases as the theatrical release. All that is
required to retrieve this information is a decoder and
additional speakers and amps.
Home theater is a complex purchase and we recommend
that you consult your local MartinLogan dealer, as they
are well versed in this subject.
Each piece of a surround system can be purchased
separately. Take your time and buy quality. No one
has ever complained that the movie was too real. The
following list and descriptions will give you only a brief
outline of the responsibilities and demands placed on
each speaker.
Front Left and Front Right
If these speakers will be the same two used for your
stereo playback, they should be of very high quality and
able to play loudly (over 102 dB) and reproduce bass
below 80 Hz.
Center Channel
This is the most important speaker in a home theater
system, as almost all of the dialogue and a large portion
of the front speaker information is reproduced by the
center channel. It is important that the center speaker
be extremely accurate and mate well the front speakers,
and that it is recommended for use as a center speaker.
This is not the place to cut corners.
Figure 26. Fresco i loudspeakers as front, center and surround (effects)
channels. Abyss subwoofers as 0.1 (effects) channel.
Home Theater
ATF Operation
The MartinLogan ATF transducer (based on RADIA
planar technology) consists of a micro-thin, low-mass
Kaladex diaphragm with an ultra-light, etched conductive
aluminum surface suspended between two high field
strength neodymium super magnet arrays (see figure 27).
When an electrical current (music signal) passes through
the etched aluminum on the diaphragm's surface it is
simultaneously pulled towards one of the neodymium
arrays and pushed away from the opposing array. When
the direction of current is reversed the diaphragm is
simultaneously pushed and pulled in the opposite
direction, thus producing sound.
Extremely Low-Mass Diaphragm
—Blazing Speed and Inner Detail
Low-mass diaphragms are crucial to a loudspeakers
ability to accurately reproduce sound. As the mass of a
transducer's diaphragm decreases, its ability to resolve
detail increases. With extremely low-mass characteristics,
the ATF transducer tracks the audio signal with almost
perfect accuracy.
Push-Pull Operation = Ideal Linearity
Linearity is another factor contributing to a loudspeaker's
ability to achieve ultimate clarity, detail and resolution.
By positioning neodymium magnet arrays in a pushpull configuration, MartinLogan ATF transducer technology
maintains uniform diaphragm control, regardless of
position as it traverses the entire audio signal. The pushpull concept is a major contributor to the linearity and
sonic superiority of ATF transducers.
Direct Full-Surface Drive
Provides Outstanding Clarity
Unlike traditional voice coil driven systems, ATF
diaphragms are directly and uniformly driven throughout
their entire surface. This full-surface drive system results
in ultra-fast transient response with no cone break up
and the ability to accurately reproduce sound with great
delicacy, nuance and clarity.
MartinLogan ATF diaphragms are constructed of
extremely low mass Dupont Kaladex® PEN (polyethylene
naphthalate) —a material chemically similar to the
low-mass PET (polyethylene terathylate) film used in
MartinLogan's generation 2 electrostatic transducers,
yet capable of handling the high thermal requirements
required for stable magnetic thin film operation.
High Field Strength—Superb Control and Efficiency
With a field strength almost 2000% more powerful than
traditional systems, Neodymium iron boron (NIB) rareearth super magnets are one of the world's strongest
commercially available magnetic materials. This
incredible field strength proves ideal for maintaining
perfect control over the low-mass Kaladex diaphragm.
Super-low distortion levels, high-resolution, and crystalclear transparency are just a few of the benefits resulting
from this superb combination of low-mass diaphragm and
high field strength.
ATF (Advanced Thin Film)
Figure 27. Cut away view of an ATF transducer. Note the simplicity due
to minimal parts usage.
Frequently Asked Questions
How do I clean my speakers?
Just use a dust free cloth or a soft brush to remove the
dust from your speakers. We recommend a specialty
cloth (available at the Xtatic shop at www.martinlogan.
com) that cleans your speakers better than anything else
we have tried. Do not spray any kind of cleaning
agent on or in close proximity to the ATF element.
• Check that all your system components are turned on.
• Check your speaker wires and connections.
• Check all interconnecting cables.
What size amplifier should I use?
We recommend an amplifier with 100 watts per
channel for most applications. Probably less would
be adequate when used in home theater where a
subwoofer is employed. Our hybrid designs will perform
well with either a tube or transistorized amplifier, and
will reveal the sonic character of either type. Dealers
are always the best source for information when
purchasing additional audio equipment.
Could you suggest a list of suitable electronics
and cables that would be ideal for MartinLogan
The area of electronics and cable choice is probably
the most common type of question that we receive.
It is also the most subjective. We have repeatedly
found that brands that work well in one setup will drive
someone else nuts in another. We use many brands
with great success. Again, we have no favorites; we
use electronics and cables quite interchangeably. We
would suggest listening to a number of brands—and
above all else—trust your ears. Dealers are always
the best source for information when purchasing
additional audio equipment.
Is there likely to be any interaction between my
speakers and the television in my Audio/Video
Fresco i is not shielded. It is intended for use with a flat
screen, non-CRT television.
W i l l ex p o s u r e t o s u n l i g h t a f f e c t t h e l i f e o r
performance of my speakers?
We recommend that you not place any loudspeaker
in direct sunlight. The ultraviolet (UV) rays from the sun
can cause deterioration of grill cloth, speaker cones, etc.
Small exposures to UV will not cause a problem. In
general, the filtering of UV rays through glass will greatly
reduce the negative effects.
ATF (Advanced Thin Film)
Dimensional Drawings
System Frequency Response
75–20,000 Hz ± 3 dB
90 dB/2.83 volts/meter
5 ohms
Crossover Frequency
500, 3200 Hz
Air core coils, metal film and low dissipation electrolytic
Woofer Type
Two 4” (10.2cm) high rigidity aluminum cone with
extended throw drive assembly, non-resonance
asymmetrical chamber format; bass reflex; unshielded
ATF Mid-Range Driver
1.5" x 6" (3.8cm x 15.2cm) ATF Transducer
ATF High Frequency Driver
1.5" x 2.25" (3.8cm x 5.7cm) ATF Transducer
Power Handling
150 watts rms
16 lbs. each (7.3 kg)
Size Without Mounting Bracket
24” inches W × 5” inches D × 8.25” inches H
(61cm W × 12.7cm D × 21cm H)
Size With Mounting Bracket Flat Behind Speaker
24” inches W × 5.7” inches D × 8.25” inches H
(61cm W × 14.5cm D × 21cm H)
Warranty and Registration
Your Fresco i speaker is provided with an automatic Limited 90 Day
Warranty coverage.
You have the option, at no additional charge, to receive a Limited
5 Year Warranty coverage. To obtain the Limited 5 Year Warranty
coverage you need to complete and return the Certificate of
Registration, included with your speakers, and provide a copy of your
dealer receipt, to MartinLogan within 30 days of purchase.
For your convenience MartinLogan also offers online warranty registration at
MartinLogan may not honor warranty service claims unless we have
a completed Warranty Registration on file! If you did not receive a
Certificate of Registration with your new Fresco i speaker, you cannot be
assured of having received new units. If this is the case, please contact
your authorized MartinLogan dealer.
Serial Number
Fresco i’s serial number is located near the binding posts. Each unit has
a unique serial number.
In the rare event that your MartinLogan product should require service
please contact the dealer from whom the product was purchased. In
most cases your dealer will be able to assist you in troubleshooting and
resolving the issue. If the dealer is unable resolve the issue or if there
is no local dealer in your area contact MartinLogan customer service
directly by using the service request form at or by
calling 785-749-0133.
Before returning any product to MartinLogan for service first contact the
service department for an RMA number. Incoming shipments will only be
accepted if labeled with a MartinLogan issued RMA number.
Should you be using a MartinLogan product in a country other than the
one in which it was originally purchased, please note the following:
1 The appointed MartinLogan distributor for any given country is
responsible for warranty servicing only on units distributed by or
through it in that country in accordance with its applicable warranty.
2 Should a MartinLogan product require servicing in a country other
than the one in which it was originally purchased the end user
may seek to have repairs performed by the nearest MartinLogan
distributor, subject to that distributor's local servicing policies. All cost
of repairs (parts, labor, transportation) must be borne by the owner
of the MartinLogan product.
3 If, after owning your MartinLogan product for six months, you
relocate to a country other than the one in which it was purchased,
your warranty may be transferable. Contact MartinLogan for details.
General Information
AC. Abbreviation for alternating current.
DC. Abbreviation for direct current.
Active crossover. Uses active devices (transistors, ICs,
tubes) and some form of power supply to operate.
Diffraction. The breaking up of a sound wave caused by
some type of mechanical interference such as a cabinet
edge, grill frame or other similar object.
Amplitude. The extreme range of a signal. Usually
measured from the average to the extreme.
Arc. The visible sparks generated by an electrical
ATF. The abbreviation for advanced thin film.
Bass. The lowest frequencies of sound.
Bi-Amplification. Uses an electronic crossover, or linelevel passive crossover, and separate power amplifiers for
the high and low frequency loudspeaker drivers.
Capacitance. That property of a capacitor which
determines how much charge can be stored in it for
a given potential difference between its terminals,
measured in farads, by the ratio of the charge stored to
the potential difference.
Diaphragm. A thin flexible membrane or cone that
vibrates in response to electrical signals to produce sound
Distortion. Usually referred to in terms of total harmonic
distortion (THD) which is the percentage of unwanted
harmonics of the drive signal present with the wanted
signal. Generally used to mean any unwanted change
introduced by the device under question.
Driver. See transducer.
Dynamic Range. The range between the quietest and the
loudest sounds a device can handle (often quoted in dB).
Efficiency. The acoustic power delivered for a given
electrical input. Often expressed as decibels/watt/meter
Capacitor. A device consisting of two or more conducting
plates separated from one another by an insulating
material and used for storing an electrical charge.
Sometimes called a condenser.
ESL. The abbreviation for electrostatic loudspeaker.
Clipping. Distortion of a signal by its being chopped off.
An overload problem caused by pushing an amplifier
beyond its capabilities. The flat-topped signal has high
levels of harmonic distortion which creates heat in a
loudspeaker and is the major cause of loudspeaker
component failure.
Hybrid. A product created by the marriage of two different
technologies. Meant here as the combination of a
dynamic woofer with an electrostatic or ATF transducer.
CLS. The abbreviation for curvilinear linesource.
Crossover. An electrical circuit that divides a full
bandwidth signal into the desired frequency bands for the
loudspeaker components.
dB (decibel). A numerical expression of the relative
loudness of a sound. The difference in decibels between
two sounds is ten times the Base 10 logarithm of the ratio
of their power levels.
Glossary of Audio Terms
Headroom. The difference, in decibels, between the peak
and RMS levels in program material.
Hz (Hertz). Unit of frequency equivalent to the number of
cycles per second.
Imaging. To make a representation or imitation of the
original sonic event.
Impedance. The total opposition offered by an electric
circuit to the flow of an alternating current of a single
frequency. It is a combination of resistance and reactance
and is measured in ohms. Remember that a speaker’s
impedance changes with frequency, it is not a constant
Inductance. The property of an electrical circuit by which
a varying current in it produces a varying magnetic field
that introduces voltages in the same circuit or in a nearby
circuit. It is measured in henrys.
Inductor. A device designed primarily to introduce
inductance into an electrical circuit. Sometimes called a
choke or coil.
Linearity. The extent to which any signal handling process
is accomplished without amplitude distortion.
Midrange. The middle frequencies where the ear is the
most sensitive.
NAC. The abbreviation for natural ambience
Pa s s i v e c r o s s o v e r. U s e s n o a c t i v e c o m p o n e n t s
(transistors, ICs, tubes) and needs no power supply
(AC, DC, battery) to operate. The crossover in a typical
loudspeaker is of the passive variety. Passive crossovers
consist of capacitors, inductors and resistors.
Phase. The amount by which one sine wave leads or lags
a second wave of the same frequency. The difference is
described by the term phase angle. Sine waves in phase
reinforce each other; those out of phase cancel.
Pink noise. A random noise used in measurements, as it
has the same amount of energy in each octave.
Polarity. The condition of being positive or negative with
respect to some reference point or object.
RMS. Abbreviation for root mean square. The effective
value of a given waveform is its RMS value. Acoustic
power is proportional to the square of the RMS sound
Resistance. That property of a conductor by which it
opposes the flow of electric current, resulting in the
generation of heat in the conducting material, usually
expressed in ohms.
Resistor. A device used in a circuit to provide resistance.
Resonance. The effect produced when the natural
vibration frequency of a body is greatly amplified by
reinforcing vibrations at the same or nearly the same
frequency from another body.
Sensitivity. The volume of sound delivered for a given
electrical input.
Stator. The fixed part forming the reference for the moving
diaphragm in a planar speaker.
THD. The abbreviation for total harmonic distortion. (See
TIM. The abbreviation for transient intermodulation
Transducer. Any of various devices that transmit energy
from one system to another, sometimes one that converts
the energy in form. Loudspeaker transducers convert
electrical energy into mechanical motion.
Transient. Applies to that which lasts or stays but a
short time. A change from one steady-state condition to
Tweeter. A small drive unit designed to reproduce only
high frequencies.
Wavelength. The distance measured in the direction
of progression of a wave, from any given point
characterized by the same phase.
White noise. A random noise used in measurements, as
it has the same amount of energy at each frequency.
Woofer. A drive unit operating in the bass frequencies
only. Drive units in two-way systems are not true woofers
but are more accurately described as being mid/bass
Glossary of Audio Terms
the loudspeaker technology company
Lawrence, Kansas, USA
tel 785.749.0133
fax 785.749.5320
©2006 MartinLogan. All rights reserved.
w w w. m a r t i n l o g a n . c o m
Rev. #111506
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF