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MartinLogan Aeon i [10/24] Dipolar speakers and your room

If your speaker system is not securely planted on the floor

or solid surface, it can shake as it produces sound and,

consequently, the sound can be compromised. If your

speaker is sitting on the carpet and only foot gliders are

used, the bass can be ill defined and even boomy. The use

of spikes is recommended to insure secured footing for

your speakers. (See Solid Footing, this page, for spike infor-

mation and installation instructions).

Dipolar Speakers and Your Room

MartinLogan electrostatic loudspeakers are known as dipolar

radiators. This means that they produce sound from both

their fronts and their backs. Consequently, musical infor-

mation is reflected by the wall behind them and may arrive

either in or out of step with the information produced by

the front of the speaker.

The low frequencies can either be enhanced or nulled by

the position from the front wall. Your Aeon i’s have been

designed to be placed two to three feet from the front wall

(the wall in front of the listening position) to obtain the

best results; however, your room may see things differently.

So listening to the difference of the bass response as a

result of the changes in distance from the front wall can

allow you to get the best combination of depth of bass and

tonal balance.

Now that you know about reflective surfaces and resonant

objects, you can see how the midrange and high frequencies

can be affected. The timing of the initial wave as it radiates

to your ears, and then the reflected information as it arrives

at your ears later in time, can result in confusion of the pre-

cious timing information that carries the clues to imaging.

Consequently the result is blurred imaging and excessive

brightness. Soft walls, curtains, wall hangings, or sound

dampeners (your dealer can give you good information

here) can be effective if these negative conditions occur.

After living and experimenting with your Aeon i’s, you

may want to use ETC (energy transfer coupler) Spikes (see

figure 6), which are available from your local MartinLogan

dealer or from the Xtatic shop at www.martinlogan.com.

With the use of these spikes, the Aeon i will become firmly

planted on the floor and, consequently, bass will tighten

and imaging will become more coherent and detailed. It is

best not to implement the spikes, however, until you are

secure in the positioning, as the spikes can damage the

floor if the speaker is moved. MartinLogan ETC spikes will

fit any common

/4 inch thread insert that may be found

on your other audio equipment (racks, speakers, etc.).

Spike Installation Instructions:

1 Carefully lay your speaker on its side to gain access to

the bottom.

2 Remove existing feet or spikes. Thread new spikes into

holes and screw them in all of the way. If the speaker

does not sit level loosen one spike until level is achieved.

3 Tighten the jam nut snugly by hand. Do not over tighten

the nut.

4 Right the speaker.

Caution: Make sure your hands and any cabling are clear

of the spikes. Do not slide speaker as spikes are sharp and

can damage your floor or carpet.

5 Adjust to level by rotating spikes. Tighten the jam nut

securely when satisfied that speaker is level.

Caution: Walking the speaker may result in a broken spike.

Figure 6. The ETC Spike.

Solid Footing

10 Room Acoustics

MartinLogan Aeon i [10/24] Dipolar speakers and your room

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