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6

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 Porshe, 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

Summary of Contents for Sapphire XL

Page 1: ...udioc com Email service audioc com Forum www audiocircle com All Rights Reserved 2006 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 ...

Page 2: ...cts 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 For the first year of ownership ACI also provides a unique Total Assurance Guarantee TAG TAG from ACI not only covers everything included in our standard five year warranty but we will also pay for shipping to ACI an...

Page 3: ...ugh 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 p...

Page 4: ...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 4 th 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...

Page 5: ...icult 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 XL an easy load for any amplifier Low distortion drive units are necessary to keep...

Page 6: ...gs 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 ro...

Page 7: ...ever watched a cone flap you know just what we mean Vented speakers are particularly sensitive to signals below their F3 point 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 botto...

Page 8: ...s 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 Choo...

Page 9: ...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 powe...

Page 10: ...n 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 ...

Page 11: ...p 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 ...

Page 12: ...g please fill out and return the warranty registration 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 assembl...

Page 13: ...her 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 8...

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