MartinLogan Loudspeaker Systems Operation, AC Power Connection, Signal Connection, Break-In

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OPERATION

AC Power Connection

Because your MartinLogan Scenario’s use an internal power supply to energize their electrostatic cells with high-voltage DC, they must be connected to an AC power source. For this reason they are provided with the proper IEC standard power cords. These cords should be firmly inserted into the AC power receptacles on the rear connection panel of the speakers, then to any convenient AC wall outlet. The Scenario’s integrate a signal sensing power supply which will switch off after a few minutes of no music signal, and requires less than two seconds to recharge the panels when a music signal is present.

Your Scenario speakers are wired for the power service supplied in the country of original consumer sale. The AC power rating applicable to a particular unit is specified both on the packing carton and on the serial number plate attached to the speaker.

If you remove your Scenario speakers from the country of original sale, be certain that AC power supplied in any subsequent location is suitable before connecting and operating the speakers. Substantially impaired performance or severe damage may occur to an Scenario speaker if operation is attempted from an incorrect AC power source.

WARNING! The power cord should not be installed, removed, or left detached from the speaker while the other end is connected to an AC power source.

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, with diminishing returns setting in around #8 to #12.

A variety of speaker cables are now available whose manufacturers claim better performance over 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 the highest quality.

We also recommend, if possible, that short runs of speaker cable connect the power amplifier(s) and speakers and that high quality long interconnect cables be used to connect

the preamplifier and power amplifier. This results in the power amplifiers being close to the speakers, which may be practically or cosmetically difficult, but if the length of the speaker cables can be reduced to a few meters, sonic advantages may be obtained.

Connections are done at the Signal Input section on the rear electronics panel of the Scenario. Use spade connectors for optimum contact and ease of installation. Make certain that all of your connections are tight. Be consistent when connecting the speaker cables to the Signal Input terminals. Take care to assign the same color cable lead to the (+) ter- minal on both the left and right channel speakers. If bass is nonexistent and you cannot discern a tight, coherent image, you may need to reverse the (+) and (-) leads on one speaker to bring the system into proper polarity. (See figure 1)

WARNING! Turn your amplifier off before making or breaking any signal connections!

Break-In

When you first begin to play your Scenario speakers, they will sound a bit bass shy. This is due to the high-quality, long- life components used in our woofer. Our custom made, butyl surround woofer requires 30 hours of break-in at 90 dB (moderate listening levels) before any critical listening. The break-in requirements of the crossover components (and, to a lesser degree, the stator) are equivalent.

The pressure compensation panel on the back of the stator panel is a passive tone-shaping device that improves tonal balance and increases dispersion without sacrificing efficiency. Please do not remove or reposition these panels in pursuit of higher hi-fi as their size and placement are crucial to the Scenario performance.

speaker output

Amplifier

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SC E N A R I OTM

Signal

Loudspeaker

Input

Figure 1. Single-Wire Connection. One Channel shown.

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Contents E N a R I OTM Contents Listen and Enjoy Now, you may turn on your system and enjoy Installation in BriefInstallation in Brief Introduction IntroductionSignal Connection AC Power ConnectionOperation Break-InPlacement Enjoy Yourself Final PlacementExtra Tweak Your Room Room AcousticsTerminology Rules of ThumbSolid Footing Dipolar Speakers and Your RoomControlled Horizontal Dispersion Dispersion InteractionsControlled Vertical Dispersion Three Major Types of DispersionDispersion Interactions Home Theater Home TheaterSubwoofer Electrostatic Advantages Electrostatic AdvantagesTweeter Midrange Woofer Full Range OperationCrossover point 2-5kHz Crossover point 100-500HzCurvilinear Line Source Clstm Martinlogan ExclusivesVapor Deposited Film Transducer IntegrityElectrostatic Loudspeaker History Electrostatic Loudspeaker HistoryElectrostatic Loudspeaker History Frequently Asked Questions Frequently Asked QuestionsFrequently Asked Questions Troubleshooting TroubleshootingWarranty and Registration SpecificationsService General InformationGlossary of Audio Terms Glossary of Audio TermsGlossary of Audio Terms MartinLogan, All rights reserved Rev. #091300