MartinLogan Center Channel Speaker Logos : User`s manual : Page 16

Page 16

Logos User's Manual

What amplification should I use with my A/V system?What amplification should I use with my A/V system?

What amplification should I use with my A/V system?

Unfortunately the most often asked question regarding

amplification is the most difficult to answer and that is

“How much power do I need?” The best advice we can

offer is that you consider that video is very dynamic and

the peak energy demands can last much longer than in

most musical presentations. Therefore it is our recom-

mendation that your A/V amplifiers be at least as large if

not larger than your current audio amplifier.

As for how much power should be available to each

channel compared to the others it is our feeling that the

front three speakers should receive the same amount of

power and the surround speakers at least 75% of the

power available to the front speakers . As discrete digital

surround becomes available all five speakers should

receive the same amount of power.

Should I unplug my Logos during a thunderstorm?Should I unplug my Logos during a thunderstorm?

Should I unplug my Logos during a thunderstorm?

Yes. Or before. It’s a good idea to disconnect all of your

audio/video components during stormy weather.

Is there likely to be any interaction between theIs there likely to be any interaction between the

Is there likely to be any interaction between the

Logos and the television in my Audio/Video system?Logos and the television in my Audio/Video system?

Logos and the television in my Audio/Video system?

Actually, there is less interaction between a television and

an electrostatic speaker than between a television and a

conventional system. The magnets in conventional

speakers do interact with televisions tubes. However, in

the Logos the conventional drivers' magnetic structure

has been physically shielded and the crossover has been

electrically shielded, so there will be no interference with

your television.

Could my children, pets, or myself be shocked by theCould my children, pets, or myself be shocked by the

Could my children, pets, or myself be shocked by the

high-voltage present in the electrostatic panel?high-voltage present in the electrostatic panel?

high-voltage present in the electrostatic panel?

No. High voltage with low current is not dangerous. As a

matter of fact, the voltage in our speakers is

10 times10 times

10 times

lessless

less than the static electricity that builds up on the

surface of your television screen.

Questions

If my child punctured the diaphragm with a pencil,If my child punctured the diaphragm with a pencil,

If my child punctured the diaphragm with a pencil,

stick, or similar item., how extensive would thestick, or similar item., how extensive would the

stick, or similar item., how extensive would the

damage to the speaker be?damage to the speaker be?

damage to the speaker be?

Our research department has literally punctured hun-

dreds of holes in a diaphragm, neither affecting the

quality of the sound nor causing the diaphragm to rip.

However, you may be able to see the actual puncture

and it can be a physical nuisance. If this is the case,

replacing the electrostatic transducer will be the only

solution.

Will my electric bill go ‘sky high’ by leaving myWill my electric bill go ‘sky high’ by leaving my

Will my electric bill go ‘sky high’ by leaving my

speakers plugged in all the time?speakers plugged in all the time?

speakers plugged in all the time?

Your Logos is equipped with a device we call the signal

sensing circuit. Here's how it works. The signal automati-

cally diminishes the bias voltage of the ESL cell to

conserve energy and prolong the life of the system. If you

like, you can think of it as an attendant who turns off the

lights when you aren't using them. Your Logos doesn't

use much energy anyway (it may cost you about as much

to operate as one 15 watt light bulb) but after five minutes

of the absence of any program material, the circuit will

turn it off.

Will exposure to sunlight affect the life or perform-Will exposure to sunlight affect the life or perform-

Will exposure to sunlight affect the life or perform-

ance of the Logos?ance of the Logos?

ance of the Logos?

We recommend that you not place any loudspeaker in

direct sunlight as the ultraviolet (UV) rays from the sun

can cause deterioration of grill cloth, speaker cones, etc..

Exposures through glass will not cause a problem,

however the heat generated by the sun will age the finish

on the speaker as it would any fine furniture. Martin-

Logan speakers are not recommended for outdoor use.

Will excessive smoke or dust cause any problems?Will excessive smoke or dust cause any problems?

Will excessive smoke or dust cause any problems?

Exposure to excessive contaminants, such as smoke or

dust, may potentially affect the performance of the

electrostatic membrane and may cause discoloration of

the diaphragm membrane.