Audio Concepts Sapphire XLs User manual

Sapphire XL
Reference Monitor
Owner's Manual
Audio Concepts, Inc.
571 West Avenue N. West Salem, WI 54669 Phone: [phone] Fax: [phone]
Website: www.audioc.com Email: [e-mail] Forum: www.audiocircle.com
All Rights Reserved 2008
Sound that Satisfies… Since 1977
Table of Contents:
Guarantee/Warranty …2
Specifications …4
Design Philosophy …4
Using your Speakers …6
Avoiding Damage …6
Hookup …7
Positioning the Sapphire XLs …8
Adding Subwoofers …9
Care & Cleaning …10
Troubleshooting …11
Warranty Registration …13

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Audio Concepts, Inc.
Our Guarantee and Warranty
Satisfaction Guaranteed:
We’re sure you’re going to love your newAudio Concepts, Inc. (ACI) products! In the unlikely
event that you are not satisfied, please contact us within 30 days of receipt of your ACI products
for a hassle-free return.
Simply follow these procedures:
1. Return Authorization: Call us at [phone] or email [e-mail], within 30 days of receipt of your
ACI products for a return authorization number. Boldly mark the return authorization number on the outside of the
box. Include a brief note stating your name, address and daytime telephone number, along with a short description
why the products are being returned.
2. Returning: We request that you return the ACI products to us in their original packaging and include packaging
materials, manuals, etc. Ship by the most economical means(preferably UPS) and insure the products for the
invoice purchase price. The customer is responsible for return shipping. Please note: ACI can not accept C.O.D.
returns.
3. Credit: Upon receipt and inspection, we will issue a refund for the invoice purchase price and invoiced UPS
Ground service only. Please note this return policy is in effect only if theACI products are in new condition, in their
original packaging, without drilled holes, disassembled or any other modifications.
Speaker Manufacture’s Warranty:
For five years from receipt, Audio Concepts, Inc. will, at its option, repair or replace factory
defective components. (Subwoofer amplifiers are three years). This warranty excludes products
that have been abused, modified, or disassembled in any way. This warranty does not apply to
products, which have been damaged in shipping.Audio Concepts, Inc. liability is limited only to
the replacement of defective parts. No other liabilities or obligations are expressed or implied.
The ACI Warranty is fully transferable from the original owner to a secondary owner provided that
the original owner notifiesACI, by phone call or by filling out the on-line form: www.audioc.com
No warranty will be transferred absent this notification.
For warranty work, simply follow these procedures:
1. Return Authorization: Call us at [phone] or email [e-mail] for a return authorization number.
Boldly mark the return authorization number on the outside of the box. Include a brief note with your name,
address and a daytime telephone number, along with a short description why the product(s) is being returned.
2. Returning: Carefully repack defectiveACI merchandise in their original packaging. Ship by the best means,
(preferably UPS or Fed Ex), and insure the products for their full retail value. The customer is responsible for return
shipping. Please note: ACI can not accept COD or Freight Collect returns.
3. Repair or Replacement: Audio Concepts, Inc. will inspect and determine the cause of failure and will pay return
shipping on the defective goods replaced or repaired. If it is found that the product wasin any way abused,
modified, or disassembled, you will be contacted with an estimate for repair charges.
Please ship any returns to the following address:
Audio Concepts, Inc., 571 West Avenue N. [phone]

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IMPORTANT NOTICE
All new speakers require a minimum of 60 hours break-in-time before
they sound the way they are supposed to. A speaker's performance improves
significantly once broken in. It is critical that you have at least 60 hours on your speakers
before you evaluate them. Don't worry if your speakers do not sound perfect the first time
you play them. This is normal until they are broken in. If you are having difficulty getting
enough hours on your speakers and your 30 day return privilege is getting near, call us.
We will work with you. Please give us the courtesy of breaking the speakers in before you
determine they don't sound right.
Many of our customers break their speakers in by:
A) Leaving them on at moderate listening levels when they are not home.
B) Leaving them on at moderate listening levels while they sleep.
C) Running pink noise through them.
These methods are not convenient for everyone and we understand this. But
please know that you are not giving yourself, your speakers or us a fair chance if you do
not break them in before critical evaluation.
THANK YOU!

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The Sapphire XL
Thank you for your order and congratulations on becoming the owner of anACI speaker system.
These fine speakers will provide you with many years of listening pleasure!
ACI speakers are designed to offer extremely high value and performance. Read the rave reviews
of the Sapphire series going all the way back to the late 80s. The Sapphire series has the reputation of
being the best value, stand-mounted monitors that money can buy and has been frequently compared to
the most expensive high-end monitors. By purchasing directly from the factory you eliminate costly
markups. You will find that your Sapphire XLs will compare favorably with systems costing far more!
We’ll put the Sapphire XL against any speaker in the world for overall balance and musicality. The
Sapphire XL has phenomenal detail and resolution yet it does not have the somewhat harsh quality that
many detailed sounding speakers have. It is extremely coherent from top to bottom and the dynamic range
of the XL has been significantly improved from its predecessors.
The bass response of the XL is truly amazing. The response is tight, deep and tuneful. Those who
wish to have a truly full-range system may want to add our Force XL, Titan XL or Maestro XL powered
subwoofer(s). These subwoofers are adjustable for a perfect match with the Sapphire XLs. The addition of
one or a pair of these subwoofers allows for the accurate reproduction of the lowest musical tones and
increases the output capability of the system.
The Sapphire XL is the result of ongoing research and development by the ACI design team.
Specifications
Frequency response: 48-20kHz ± 3db anechoic, 60-20kHz ± 1.5db (usable in-room response extends
cleanly to 38-40Hz)
Nominal impedance: 6 ohms, minimum impedance 4.5 ohms, low reactance
Sensitivity: 85.5db 1 watt/1 meter
Bass-loading: 4th order, low Q, rear ported system
Recommended RMS Power: 35 to 200 watts per channel
Tweeter: 1” hand-damped silk dome with aperiodic rear chamber, cast faceplate and ferro-fluid
Bass-mid: 5 1/2” cast-frame with paper cone, rubber surround; long throw, low distortion motor system
with vented pole piece
Cabinet: Variable wall thickness; 1" MDF front baffle, 3/4"- 1 1/2" MDF side and rear panels, extensive
interlocking bracing structure. Internally damped with dacron and acoustic foam.
Finish: Satin Black and optional finishes
Inputs: Gold plated binding posts
Dimensions: 12” H x 8 1/2" W x 12 1/2" D
Weight: 22 lbs each
Recommended accessories: SoundAnchor or Atlantis stands, Force XL, Titan XL or Maestro XLPowered
Subwoofers, DH Labs Cables.
Design Philosophy for the Sapphire XL
Modern speaker design is a combination of science, art and sweat. Asuccessful design such as
the Sapphire XL requires thousands of hours utilizing computer modeling, several generations of
prototypes, precision testing, critical listening and many “fine tunings”.
Our design goals for the Sapphire XL were to produce a compact, attractive speaker with smooth,
uncolored, wide-range response, holographic stereo imaging, good sensitivity, high power handling, and
long term enjoyability. This Sapphire XL is the most advanced model of a speaker family first produced in
1988. The Sapphire XL had to be a true “monitor” with nearly full-range response that could be optionally

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used with subwoofers. And, as an ACI product it had to sell for far less than the state-of-the-art monitors it
would compete with. We are pleased to have achieved and in some areas exceeded our goals by
systematically engineering and refining the Sapphire XL to optimize performance. Please note the following
factors:
Frequency Response:
For a speaker to be considered “accurate” it must have a smooth frequency response that is free of
major dips, peaks, troughs or plateaus. The Sapphire XLs exhibit exceptionally flat response throughout the
range from below 48Hz to 20kHz. In fact, from 60-20Khz the variance is less than 1.5db! The cast-frame
woofer provides excellent bass performance at all but subwoofer frequencies.
Of nearly equal importance is the off-axis response of the speaker. This response from 15 to 45
degrees off the axis of the speaker determines the smoothness of the early reflections from the wall
surfaces. In most domestic listening situations this energy is nearly equal to the on-axis response in
determining the balance of the system. The off-axis response should show a gradual decrease in output
with increased frequency but should not show major dips or peaks which will color the overall sound. Again,
the Sapphire XL gives an exemplary off-axis dispersion pattern.
Tight quality control procedures are necessary to assure that your Sapphire XLs sound every bit as
good as our lab samples. Incoming shipments of raw parts including cabinet materials, drivers and
crossover components are subject to extensive testing to verify that they meet our exacting standards.
Precise quality control is critical for the best stereo imaging. Drivers are selected to closely match the
standard, and crossover components are hand selected to better than 1% tolerance.
Dynamic range:
Dynamic range in a speaker requires;
•Adequate sensitivity so that it may be driven to realistic levels with available amplification. The C-
weighted sensitivity for the Sapphire XLis 85.5db. This is a very reasonable rating considering the size
and bass response of this speaker.
•An easy load for the amplifier. A speaker can have a high sensitivity number but may present a difficult
load for the driving amplifier. The Sapphire XL has a nominal impedance of 6 ohms. The minimum
impedance is 4.5 ohms and the maximum impedance is 26 ohms. Some speakers have wildly varying
impedance phase curves that can cause problems for amplifiers. The phase of the Sapphire XLs
impedance helps make the Sapphire XLan easy load for any amplifier.
•Low distortion drive units are necessary to keep the music from becoming edgy or gritty as the volume
is turned up. The drive units used in the Sapphire XL have very linear suspensions, which reduce
distortion components to inaudible levels and contribute to the excellent sense of “clarity”. The
crossover used keeps low frequencies out of the tweeter and protects it from over-excursion at
resonance, which would otherwise cause increased distortion.
Good power handling is a requirement if musical peaks are to be reproduced cleanly and without
damage to the speaker. The drive units in the Sapphire XL are extremely rugged and will cleanly reproduce
the dynamics of live music.
Delayed Resonance Control:
The ultimate control of delayed resonance required extensive use of Cumulative Spectral Decay
analysis coupled with accelerometer testing of the cabinet wall surfaces. This extensive testing allowed us
to develop the most cost-effective internal bracing to create the vault like solidity of the Sapphire XL. The
entire cabinet is formed of an incredibly inert and well-damped medium density fiberboard (MDF) specified
at 49.3 pounds per cubic foot density. All drive units were designed with effective resonance control in
mind.
We’ve attempted to show you some of the important design considerations that go into the
Sapphire XL system. To fully document the design process would require many hundreds of pages. We
haven’t even discussed the extremely high level of quality control that must be exercised in the drivers,
crossovers and enclosure to maintain the design standards. But the most important point is that the
Sapphire XLs are designed and built by and for music lovers. You must hear the Sapphire XL system
reproduce your favorite music over a period of time to appreciate how fine these speakers are.

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Using Your Speakers
If the rest of your system does not work properly or is not correctly connected you will not get the
best performance from your system. To eliminate problems we recommend the following:
I. Use the finest associated components you can afford. Turntable, cartridges, pre-amps,
amplifiers, (receivers) and cables all have profound impact on the sound of your system.
Accurate speakers let more detail through. You will hear more of the beauty of the music,
but flaws in your system and or source material may be more obvious.
Any good audio system is made up of matched components. You wouldn’t use bargain
recap tires on a new Porsche, and you shouldn’t use inferior components with a high
quality speaker. Your Sapphire XLs perform like speakers costing two to four times their
price. Keep this in mind when selecting the rest of your system.
Your Sapphire XLs will work in systems with as little as 20 watts per channel. But for
optimum sound we recommend high-quality amplification of 35 - 200 watts per channel.
II. Know your source material. People often blame their audio gear for poor recordings. A
great number of popular recordings are of inferior sound quality. Unfortunately this applies
to records, DVDs and CDs. Commonly poor recordings are rolled off in the low bass, and
harsh and constricted in the mids and highs. Good stereo image is rare. Many recordings
are still done on old studio monitor speakers that are grossly inaccurate. Consider that
some producers still mix recordings to sound best on cheap table and car radios! This
doesn’t mean you can’t enjoy these recordings, but you should try a few of the best
audiophile recordings just to see how terrific your system can be when fed a good signal.
III. Work at getting the best placement of your speakers in their environment. It is not unusual
to be able to get a 25 to 50 percent improvement in sound by careful placement of
speakers and furniture. It may not be practical to go all out, but the more you can “tune”
your room, the better your system will sound. Refer to the section on placement and room
treatment later in this section.
Avoiding Damage
ACI speakers are designed for the purpose of accurate reproduction of music in the home. We do
our best to make our speakers rugged and reliable. However, ANY speaker or system may be damaged
under certain conditions:
•Excessive power, particularly at certain frequencies or for prolonged periods of time
•Excessive distortion often caused by under-powered amplifiers or receivers
•Defective amplification
•Excessive subsonic energy
Our systems are tested at high volume levels with a variety of amplifiers and receivers before a
design is approved. With many years of testing, we know it is virtually impossible to damage a component
without the system first giving audible warning in the form of distortion. We also know that true factory
defects are extremely rare, less than one in 10,000 drivers.
Here are some considerations to keep in mind to avoid damaging your drivers:
•Even though a system may be rated for 100 watts or more it is very easy to damage it with a low power
receiver. When an amplifier runs out of power, it “clips”. This clipping produces large amounts of
distortion which sends excessive energy particularly to the midrange and tweeter. This clipping
distortion accounts for more than 75% of all tweeter failures. How do you know if the amplifier is

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clipping? Volume knob placement does NOT indicate much. Some receivers reach full output well
before 12:00 on the dial. Use of the loudness button, bass boost and treble boost can all drive the
receiver and then the speaker into distortion at fairly low levels.
•Many of today’s recordings including DVDs and CDs contain extremely powerful low bass. This low
bass can easily drive woofers into over-excursion or cause the amplifier to run out of power and clip,
potentially causing damage.
•Our systems are designed for accurate sound. Our rate of damage or failure is extremely low. We could
make the systems even more rugged if we were to compromise sound quality. Moving the crossover
points upward would protect midrange and tweeters better while causing a loss of detail, clarity and
imaging. The cabinets and woofers could be designed to roll-off the low bass which would protect the
woofers but this would lessen the low bass response and clarity. Protection devices could be added in
the crossovers which would shut the system down when damaging power or distortion was present but
every one of these devices audibly degrades the sound!
You can protect your speakers by following a couple of very simple guidelines:
•If it sounds distorted, turn it down. Distortion is a warning sign that should not be ignored.
•Don’t use tone controls or equalizers if possible. IF you must use them, monitor the system carefully.
•Beware the party damage epidemic. Speakers are more often damaged during parties. All those bodies
soak up sound, requiring more output to sound as loud, bass and treble controls are sometimes
cranked up and nobody is listening for distortion.
•Watch out for energy put out by the amplifier in the range below 20Hz which is not music. Examples
include record warps, DC current and subsonic noise in the recording. These signals can take up a lot
of amplifier power which means the amplifier runs out of steam very early. These signals can also
overload a speaker even though you can’t hear them. If you have ever watched a cone “flap” you know
just what we mean.
•Vented speakers are particularly sensitive to signals below their F3point. The average vented box that
can handle 100 watts at 50Hz may handle less than 5-10 watts below 25Hz! Sealed box speakers with
low Qts. numbers have a similar characteristic although not as severe. Low organ or synthesizer notes
may cause an otherwise excellent woofer to bottom out at relatively low input levels.
•Keep an eye out for excessive cone movement that is not producing music. Find the source of the
problem and eliminate it, play at low levels, or use a subsonic filter (usually in your pre-amp) which will
filter out energy below 20Hz. However, use of a subsonic filter may take away from the naturalness of
bass sounds. We don’t recommend it for extremely critical listening.
In over thirty years of daily evaluation of all types of speakers on everything from 10 to 1000 watts
with all kinds of music, we have never damaged a driver without first hearing audible distortion. If it sounds
bad, turn it down and you will never damage a speaker. Refer to the break-in recommendations at the end
of this manual.
Hookup
Your Sapphire XLs are furnished with five-way type binding posts. You may choose to utilize spade
lugs, banana jacks, pins, or bare wire. It is important that the positive and negative leads do not touch. If
you use bare leads, be sure to twist them tightly and insert through holes in such a manner that they do not
fray or short out against each other. Good connections are important, so make sure any ends are tightly
crimped and preferably soldered to the wire ends. Speaker wires should be kept as short as possible, (long
wires add excessive resistance and color the sound.) The use of quality wire is recommended. ACI stocks
and recommends DH-Labs speaker cables.
Make sure you hookup the speakers in the correct polarity. The red (positive) terminal on your amp
should hook up to the red binding post, and the black terminal should be connected to the black binding
post. Keep this the same for both speakers in a stereo pair. A way to check the correct polarity is to play
music with a lot of bass. The correct hookup will yield the greatest amount of bass.

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Speaker Grills
Your Sapphire XLs are supplied with cloth covered grills which enhance the appearance of your
speakers and provide some protection for the drive units. To protect the drivers we recommend leaving the
grills in place most of the time. However, for the most critical listening we suggest removing the grills.
Positioning the Sapphire XLs
As mentioned, the proper placement of speakers in your room will easily improve the sound.
Because all of our rooms and tastes are different, it is impossible to specify a “correct” placement. Instead,
let us present you with some acoustical facts, then you can optimize placement in your room.
It helps to visualize sound waves as behaving very much like water waves. The sound we hear is
made up of two types of waves. Direct sound waves come right from the speaker and are not changed in
any way. Reflected waves come to us after bouncing (diffracting) off the speaker enclosure itself, or walls,
ceiling, floor or furniture. If you want to see how much these reflected waves affect the sound, move your
speakers outside and hear the difference.
Sound waves come in different lengths; the lower the note, the longer the wave. Extreme low
frequencies such as the lowest organ pedal notes are over 60 feet long! If your room is not big enough, the
wave can’t develop fully. But the biggest problem with bass notes is the phenomenon we call standing
waves. In effect the waves more or less “pile up”. This creates big peaks and dips in the bass response. If
you put a certain frequency through the speakers, you can usually walk around the room and find places
where it is very loud, and places where you perceive virtually nothing.
Just as the room affects the bass response, so it affects the mid-treble sound of the system. In the
mid-treble range, the sound waves are shorter and have peaks and dips, most of the affects (peaks and
dips) occur from enclosure edges, furniture, walls, or the floor. Sapphire XLs exhibit the deepest image
when placed away from walls and furniture. The shorter wavelengths of the mids and highs are more easily
absorbed than the longer wavelengths of low frequencies. This is why a bare room sounds so harsh
compared to a room with a lot of stuffed furniture, carpets, drapes, etc.
An ideal setup for sound would be achieved if you could:
•Choose a room with width, height and length dimensions that are not multiples of each other. (A cube
would be the worst!) Good numbers might be something like, height = 8 feet, width = 15 feet, and
length = 26 feet.
•Choose a room that has an irregular shape, non-parallel walls cut down on standing waves.
•Place the speakers so that the woofer cones are at irregular distances to the floor, walls and ceiling.
This can be difficult. Use a tape to measure the distance from the center of the woofer to the room
boundaries. Move the woofers around till you have cut down on the number of related distances. (You
don’t want distances like 12 and 24”, but more like 12 and 22”). Use the distance from the woofer to the
boundaries to increase or decrease bass output. Sticking the speaker in the corner or close to walls will
give more bass output than putting the speaker out into the room. You can use this to get the best
balance between bass output and upper range output.
•Use absorbent materials to help smooth upper-range response and improve transient response and
clarity. Why? Let’s take the sound of a bell for example. First you will hear the direct sound from the
speaker. But some of that sound bounces from wall-to-wall, ceiling-to-floor, off furniture, etc. before it
reaches your ears milliseconds later. Because the time difference is short, you don’t hear an echo, but
the sound of the bell is stretched out from something like a “ding” to a “ddiiinngg”. Some speaker
engineers have begun to realize this and are addressing the problem in their latest designs. This is why
we are now seeing very directional designs. This controlled directionality increases the amount of direct
sound in proportion to reflected sound.

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•Place speakers as far as possible from other furniture and room boundaries. Keeping the mids and
tweeters away from the floor is particularly important. For stereo use the Sapphire XLs are designed to
sound best when the optional Sound Anchors or Atlantis 24-26” stands are used. These stands can be
sand filled and are highly recommended.
•Use padded furniture and drapery when possible to cut down on reflections. Furniture has the added
bonus of helping to break up standing wave patterns in the bass.
•Use a symmetrical placement of the speakers in the room. Of course the distance between the
speakers is also important. In general, the further back your listening position, the farther apart should
be your speakers. In most rooms you will want the Sapphire XLs placed between five and eight feet
apart. Experiment! Too much distance will smear the image and it will seem like there is a hole in the
middle. Too small a distance will compress the image.
•Experiment with facing the speakers straight into the room or toed in slightly toward the listener. For
video applications the left and right speakers should be close to the edges of the screen.
Left – Right Speaker Placement:
Your Sapphire XLs are constructed in mirror-imaged pairs. Best stereo imaging and smoothest
response is usually attained with the speakers placed so the tweeters are mounted to the outside.
However, depending on your room setup and system, your Sapphire XLs may sound better with the
tweeters mounted to the inside. Try the Sapphire XLs both ways to determine which placement provides
the best response in your application.
Adding Subwoofers
Using subwoofers gives you some flexibility that you don’t have with an all in one system. But it
also requires some decisions.
•Choosing between the Force XL, Titan XL, or Maestro XL subs: All were designed to mate perfectly
with the Sapphire XLs. These are self-powered subwoofers, which makes them an ideal add-on.
Because the crossover frequency and output levels are adjustable they can be easily integrated with
the Sapphire XLs in any system. A single Titan mated with a pair of Sapphires has been one of our
biggest selling combos for years. Substituting a Maestro for the Titan will yield a system with superb
dynamic range even in very large rooms. For those who want stereo subs, all three subwoofer models
are suitable and your choice will depend on budget, room size, and how loud you like to play it. Check
the website for more information, email us at [e-mail] or call us at [phone] for help in
deciding the best subwoofer(s) for your needs.
•For the most coherent image the subwoofers should be relatively close to the main speakers. Because of
the electronic crossovers in theACI subwoofers, the exact placement is not as critical as with most
subwoofers.
•Placing the subwoofers close to a wall will increase bass output. Moving the subwoofers into a corner will
increase bass output even further. Use the placement to fine-tune the amount of bass your system
produces.
•If you take time you can usually find a way to get the main speakers away from walls while optimizing the
placement of the subwoofersfor the best bass.

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•Stereo subwoofers will usually yield the smoothest bass response when they are placed asymmetrically in
the room.A good way to start is with one in or very near a room corner and the other subwoofer about 1/3
of the way along a wall.
•Experiment with the phase of your subwoofersrelative to your Sapphire XLs. Correct phase is dependent
on the relative distances of the Sapphire XLs and sub(s) to the listening position. Leave the Sapphire XLs
in their normal phase, but use the phase adjustment of the Force, Titan or Maestro to fine tune. Easy,
detailed instructionsfor subwoofer adjustment and setup can be found in the subwoofer owner's manual or
on theACI website.
Remember, it’s what fits your room and sounds the best to you that counts. Position the speakers
to give you the sound you want.
Port Plugs:
Normally, the Sapphire XL's rear ports are an important part of the Sapphire XL's sound quality and
bass response. In some situations, it may be beneficial to plug these ports with the supplied foam plugs.
Plugging the ports will reduce the bass output. Plugging the ports will change the Sapphire XLs into an
aperiodic system with a more gradual low-frequency roll off that begins at a higher frequency. We suggest
experimentation in the following situations:
1. If using the Sapphire XL with a quality subwoofer such as the Force XL, Titan XL or Maestro XL.
Installing the foam plugs may result in a smoother transition between the subwoofer and the Sapphire
XL.
2. If you have a room-setup situation in which the bass seems to be too prominent. This might occur if the
Sapphire XLs are pushed right up to the walls. It will depend on room dimensions and other equipment
used.
Install the foam plugs by inserting so they are fully in the port. They may easily be removed
using tweezers, pliers or something similar.
Care & Cleaning
The finish can be easily cleaned by gently rubbing with a recommended MicroFiber Polishing Cloth.
These soft, plush, microfiber cloths provide superior cleaning results. They contain no chemicals and are
ideal for any fine musical instrument, furniture or speaker system. With the MicroFiber cloth your Saphhire
XLs will polish perfectly without the need of chemical cleaners. Sometimes it helps to “fog” the area with
your breath like you were cleaning a pair of glasses.
Taking care of Piano Gloss finish:
•The Piano Gloss finish is essentially an automotive finish and can be cleaned and “repaired” in a
similar manner.
•If there are rub marks, fingerprints, etc. that aren’t coming out with just the cloth, try Meguiar’s Quick
Detailer Mist & Wipe. This product can be purchased at just about any place that sells automotive wax
and such.
•If the finish has been dulled by something rubbing against it, or finely scratched it can be repaired using
other Meguiar’s products. Meguiar’s Mirror Glaze, Show Car Glaze #7 is a good place to start. It is very
gentle. If #7 isn’t aggressive enough, start with the #4 version, then follow-up with #7 (the lower the
number the more abrasive it is).After rubbing out by hand you can remove any residue using a clean
cloth.

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Speaker Break-In ******Important!!!
Allow at least 60 to 70 hours of playing time before your new ACI speakers will sound their best.
The adhesives and materials used in manufacturing must stretch and flex properly before a speaker will
sound its best. After break-in the bass will be tighter and go lower, imaging and transparency will improve
and the midrange and highs will sound smoother and more natural.
A couple suggestions for quicker break-in:
•Play the Sapphire XLs at medium volume while away from home. A CD player on repeat or FM radio
works fine.
•Place the Sapphire XLs grill-to-grill and reverse the polarity on ONE of the speakers. Wiring them out-
of-phase like this will cancel much of the sound and allow you to break them in when the sound would
otherwise be obtrusive.
Troubleshooting
Occasionally we get a call or Email from someone who feels there is a problem with his or her ACI
speaker. At least a couple of times a year we will get a call or letter that goes something like this:
“Speakers are not working properly, can’t get enough sound even with the volume turned way up.” The
problem may be different, but with this little information to go on it is almost impossible to trouble shoot the
problem “long distance”.
The following troubleshooting checklist may help:
1) Are all system hookups properly connected, not partial shorted wires, or reversed connections,
etc?
2) Did you try the rest of your system with other speakers to determine if the problem exists with
the speakers?
3) Please be realistic in your expectations. Our speakers offer excellent value but we can’t beat
the laws of physics. For instance, a compact speaker like the Sapphire XLs will amaze you with
its clean output, but may not play as loudly as a very large speaker.
IF for any reason you aren’t satisfied with the sound you’re getting from your speakers we want to
know about it. Make sure the speakers have had adequate break-in time. Before you call, write or email
please try to narrow down the problem and eliminate other factors. If you contact us we will need to know:
•The size of your room
•Where you have the speakers placed
•What other equipment is in your system
•Have you tried other speakers (which ones, and did they eliminate the problem)
•Any other specific symptoms or information you can provide
Our Customers are #1 with us, and we want you to be completely happy with your ACI speakers!
The Company
Audio Concepts, Inc. (ACI), has been satisfying discerning music lovers since 1977. Our goal has
and always will be to provide exceptional product and service to music enthusiasts around the world. Audio
Concepts speakers are an expression of dedication to our customers and their desire for accurate musical

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reproduction. We believe you must audition speakers in your own home and in your own system. Please
see the warranty statement for details.
After listening, please fill out and return the warranty registration or quickly register online. This
warranty registration is important. It allows us to reach you in the event of future upgrades. The comments
you make on the warranty help us to continually improve our products and customer service. Thank you!
Specifications and design are subject to change without notice due to our continuous research
and development program.
Designed, assembled, and tested with pride in the U.S.A.
Audio Concepts, Inc.
571 West Avenue N.
West Salem, WI 54669
Phone: [phone] Fax: [phone]
Website: www.audioc.com Email: [e-mail]
Official ACI Forum: www.audiocircle.com
All rights reserved Audio Concepts, Inc. 2008 rev.3/08

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Warranty Registration, Please Return
ACI div. Audio Concepts, Inc.
571 West Avenue N. West Salem, WI 54669
[e-mail] [phone]
Congratulations on becoming an ACI speaker owner. Completing this registration enables us to contact
you regarding future upgrades. Your information helps us provide the best possible products and service. If
you need additional room please continue on the back. You may also register your product electronically at
our web site. http://www.audioc.com
Name: ___________________________________________________________________________________
Address: _________________________________________________________________________________
Main reasons you purchased from ACI: _________________________________________________________
Where did you first hear about ACI: ___________________________________________________________
System(s) purchased: _______________________________________________________________________
Date received: _____________________________ Invoice Number: _________________________________
Condition received in: ______________________________________________________________________
Comments or suggestions regarding our staff or service: ___________________________________________
Other audio equipment used: _________________________________________________________________
Do you have a home-theater system? ___________________________________________________________
Do you plan to purchase other speakers within the next two years? _____ If so, what types of speakers are you
interested in purchasing, (Tower speakers, satellite speakers, subwoofers, wall speakers, outdoor speakers, home-
theater speakers, etc.) __________________________________________________________________
_________________________________________________________________________________________
All speakers require at least 60-80 hours of playing time to sound their best. After your speakers have had time to
break-in and you've done some serious listening please tell us:
Features you like most about your ACI speakers: _________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
Areas of performance or appearance you'd like to change: __________________________________________
_________________________________________________________________________________________
Other comments or suggestions: ______________________________________________________________
Will you recommend us to others? ________ (Over 1/2 of our customers were recommended to us by testimonials on
computer data bases or referrals from someone they know. We put the money we save on advertising into the highest
quality products at the lowest possible cost to you.) We would appreciate being able to use your comments in future
advertising. Please sign here to allow us that privilege.
Name: _________________________________________ Date: ___________________
Thank you for taking the time to complete and return this registration!