MartinLogan Source Speakers Specifications download pdf (Page 10)

Terminology

10RoomAcoustics

Thisisanareathatrequiresbothalittlebackgroundto

understandandsometimeandexperimentationtoattain

the best performance from your system.

Your room is actually a component and an important part

of your system. This component is a large variable and can

dramaticallyaddtoorsubtractfromagreatsonicexperience.

Allsoundiscomposedofwaves.Eachfrequencyhasits

ownwavesize,withthelower,orbassfrequenciesliterally

encompassing from 10 feet to as much as 40 feet. Your

roomparticipatesinthiswaveexperiencelikeaswim-

ming pool with waves reflecting and becoming enhanced

dependingonthesizeandshapeoftheroomandthe

types of surfaces in the room.

Rememberthatyouraudiosystemcanactuallygenerate

alloftheinformationrequiredtorecreateasoniceventin

time, space, and tonal balance. Acoustically, the role of

an ideal room would be to neither delete nor contribute

tothatinformation.However,nearlyeveryroomdoesto

some degree.

Standing Waves

Sound coming from a speaker bounces around in a room

until a pattern emerges—this is called a standing wave.

Typically,thisisonlyaproblemwithfrequenciesbelow

100Hz.Whenthishappensdifferentpartsofyourroom

experienceeitheranexcessoralackofbass.

Some people believe that having a room without parallel

walls will eliminate this effect. The truth is that non-parallel

walls only generate different standing wave patterns than

those that occur in rectangular rooms.

Usually,youcanexcitemostofthestandingwavesina

room by putting the Dynamo 500 in a corner. Listening

positiondetermineswhichstandingwavesyouwillexpe-

rience. For instance, if you sit in a corner you will hear

most of the standing waves. This can be an overpowering

experience.Sittingnexttoawallcanalsointensifythelev-

elsofthestandingwavesthatareexperienced.

Resonant Surfaces and Objects

All of the surfaces and objects in your room are subject to

thefrequenciesgeneratedbyyoursystem.Muchlikean

instrument, they will vibrate and "carry on" in syncopation

with the music, and may contribute in a negative way to the

sound.Ringing,boominess,andevenbrightnesscanoccur

simply because surfaces and objects are "singing along"

with your speakers.

Resonant Cavities

Small alcoves or closet type areas in your room can be

chambers that create their own "standing waves" and can

drum their own "one note" sounds.

room aCoustICs

Your Room

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MartinLogan Source Speakers Specifications Page 10

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