MartinLogan Descent [13/20] Solid footing

After living and experimenting with your Descent, you

may want to use ETC

™ (Energy Transfer Coupler) Spikes

(see figure 13), which are included. With the use of these

spikes, the Descent subwoofer will become more firmly

planted on the floor and, consequently, bass will tighten. 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 subwoofer is moved. MartinLogan ETC spikes

will fit any common

/8 inch thread insert that may be found

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

Spike Installation Instructions:

1 Carefully remove the grill cloths from your Descent.

2 Carefully lay the Descent on its side to gain access to

the bottom.

3 Remove existing feet or spikes. Thread new spikes into

holes and screw them in all of the way.

4 Tighten jam nut snugly by hand. Do not over tighten

the nut.

5 Right the subwoofer.

Caution: Make sure your hands and any cabling are

clear of the spikes. Do not slide the subwoofer as spikes

are sharp and can damage your floor or carpet.

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

securely when satisfied that the subwoofer is level.

Caution: Walking the subwoofer may result in a broken

spike.

Room Acoustics 13

Solid Footing

Figure 13. The ETC Spike.