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System Setup and Operation

Installing the Feet on the PedWoofer

IMPORTANT NOTE: Only install the spikes after you've decided on

the final location for the PedWoofers. Once the spikes are attached

to the PedWoofers it will be much more difficult to move them.

In order to ensure stability the Pedwoofers and PedWoofer/satellite com-

bination must be used in conjunction with the included feet. To mount

the feet carefully turn the PedWoofer upside down and place it on its

top on a carpet or some other soft non-damaging surface.You will see

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four sets of holes with threaded inserts in the bottom of the PedWoofer.

Remove the black anodized flat aluminum feet, the 1⁄4 – 20 round head

bolts,and the package of pointed spiked feet from the PedWoofer pack-

aging.Place the flat aluminum foot with the rounded end extended over

the side of the PedWoofer.Be sure that the threaded insert in the alumi-

num foot is facing up at you, as you're looking down at the bottom of

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the PedWoofer (see Figure 17).Line up the two holes in each aluminum

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foot with the threaded inserts in the bottom of the PedWoofer. Insert

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the 1⁄4 – 20 screws into the holes and tighten them securely using the

included Hex key.

Figure 17

After all four feet have been installed carefully remove the spiked feet

from their package.USE EXTREME CAUTION,AS THE POINTED SEC-

TIONS OF THE SPIKES ARE VERY SHARP. If you are placing the Ped-

Woofers on a carpeted surface we recommend using the pointed ends

of the spikes.If you are placing the PedWoofers on a hard surface (wood,

tile,cement,etc.) we recommend removing the sharp pointed ends of the

spikes by unscrewing them from the body of the spike.

Screw the bodies of the spikes onto the aluminum foot using your hand

and being careful not to cross thread them. If you are concerned about

the pointed ends you can unscrew them from the body of the spike before

you install them. Once the spikes have been installed carefully turn the

PedWoofers over and place them in their final location.You can adjust

for slight discrepancies in level by screwing out the small pointed section

of the spike. Unscrew them no more than a total of 5 turns in order to

maintain adequate strength in the foot/spike combination

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System Setup and Operation

The setup and operation of the 8200 and 6200 PedWoofers is exactly the

same except that the SA 6200 single channel amplifier and its associated

controls effect both PedWoofers in the 6200 system while the 8200's dual

channel amplifier provides controls for each PedWoofer independently.

The LOW PASS Control

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the THX/EXT setting. All THX certified satellites have been optimized to

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work with an 80 Hz crossover point.

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If your Processor/Receiver has no internal crossover (a fairly rare occur-

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rence these days) the PedWoofer's crossover should be used to optimize

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the performance of the system,by ensuring that the subwoofer and satel-

lites produce a cohesive and well integrated sound picture.

Higher crossover frequencies pass more bass to the PedWoofers but can

quickly begin to sound boomy. They also make it easier to localize the

subwoofer sonically, which is highly undesirable. Higher crossover fre-

quencies may be suitable,however,when using very small satellites that

have no real low frequency performance.Settings lower than 80Hz should

only be employed if you are using larger speakers that have extended

bass response. This way, the PedWoofer will only reproduce the very

lowest bass frequencies that are in the range where the main speakers

begin to roll off.It's generally undesirable to have the main speakers and

the subwoofer overlap too much. Larger speakers means a lower LOW

PASS crossover frequency, smaller speakers means a higher LOW PASS

crossover frequency. If necessary, contact the manufacturer of your sat-

ellite speakers for their specified low frequency response to determine

the appropriate LOW PASS setting on your PedWoofer amplifier. In the

end, however, a little time spent experimenting will generally result in

dramatically better bass response.

A Word About Bass, Center Channel Modes, and

System Setup: Many Dolby Pro Logic surround processors and

surround receivers provide a choice between "Wide" (full fre-

quency range) and "Normal" (restricted low frequency) mode for

the center channel speaker. Atlantic Technology recommends that

the center channel be operated in the Normal mode when using

a powered subwoofer. The center channel speaker will sound

more dynamic and the intelligibility of the system will generally be

improved when in the Normal mode.

Bass Management

Today, many processors and receivers offer Bass Management capa-

bility. If yours does it will ask you to choose between Large and Small

loudspeakers during the system setup procedure.When speakers are set

to Large the processor/receiver assumes that they can produce full fre-

quency range sound,including very deep bass at fairly high volume levels.

When set to Small it assumes that the speakers are bass limited and feeds

8200/6200 Pedestal Subwoofer System

When used with a complete THX Certified speaker

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system, the PedWoofer system's LOW PASS control

should be set at 80Hz,unless you are using a proces-

sor with a built-in crossover.If your processor is THX

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certified or has a built-in crossover, bypass the Ped-

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Woofer amplifier's LOW PASS control by setting it to

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SA-700

Servo Controlled

Subwoofer Amplifier