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Cautions:

• To prevent the cabinet from warping 

or discoloring, do not place the 
subwoofer in a place where it is 
exposed to direct sunlight or excessive 
humidity.

• Do not place the subwoofer where it 

might be knocked over or exposed to 
falling objects.

• The metal control panel on the back 

of the PRO-SW220P acts as the heat 
sink for the subwoofer’s internal 
amplifier. Therefore, place the unit at 
least 4 inches (10 cm) away from a 
wall, and do not let anything come 
into contact with this panel.

Where and how you position your 
subwoofer greatly affects its bass response. 
Adjusting the subwoofer’s volume control 
in relation to the left and right speakers 
and adjusting the subwoofer’s high cut 
filter also affects your speakers’ overall 
sound.

Although low frequencies are non-
directional, factors such as room 
reflections, standing waves, resonance, 
and absorption strongly affect your 
subwoofer’s performance. For maximum 
bass output, place your subwoofer in a 
corner. To reduce output, move it away 
from corners and back walls. Even slightly 
moving the subwoofer can have a major 
effect on bass response.

We recommend that you test the 
subwoofer in different locations to 
determine where the best balance is 
between your satellite speakers (if used) 
and subwoofer. We also recommend that 

you place the PRO-SW220P at least 4 
inches away from the wall, and at least 2–3 
feet away from your television or 
computer’s disk drive system so the 
subwoofer’s magnet will not distort the 
colors of your TV picture or erase your 
floppy disks.

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Using the supplied screws, secure the four 
protective feet (packed separately) into the 
pre-drilled holes at each corner of the 
cabinet’s bottom.

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You can connect your PRO-SW220P to an 
amplifier/receiver’s subwoofer out or pre 
out jacks or speaker terminals.

Note

: You can connect your PRO-

SW220P to your TV if it has variable line 
out jacks.

Caution:

 To avoid any damage to the 

subwoofer or amplifier, disconnect power 
from your components before making any 
connections.

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Use this connection if your amplifier/
receiver has jacks labeled 

SUBWOOFER 

OUT

 or 

PRE OUT

. Do not use the 

PRE 

OUT

 jacks if they are already connected by 

cables or jumpers to your amplifier.

Summary of Contents for PRO-SW220P

Page 1: ...ator power indicator changes color when the subwoofer is connected to power but not receiving a signal High Level Input lets you connect the subwoofer to an amplifier s or receiver s speaker outputs Note You need speaker wire not supplied to connect the subwoofer to an amplifier or receiver s speaker outputs High Level Output lets you connect the subwoofer between an amplifier or receiver without ...

Page 2: ...xits the unit Placing the subwoofer on the same stand or shelf as your turntable can result in a low frequency rumble or acoustic feedback Cautions To prevent fire or shock do not expose this subwoofer to rain or moisture Do not place the subwoofer with its metal plate against the floor Place the subwoofer away from heat sources such as radiators stoves or other appliances that produce heat WARNIN...

Page 3: ...nce is between your satellite speakers if used and subwoofer We also recommend that you place the PRO SW220P at least 4 inches away from the wall and at least 2 3 feet away from your television or computer s disk drive system so the subwoofer s magnet will not distort the colors of your TV picture or erase your floppy disks A A A AT T T TT T T TA A A AC C C CH H H HI I I ING NG NG NG F F F FEE EE ...

Page 4: ... r r T T T Te e e er r r rm m m mi i i in n n na a a al l l ls s s s Connect the amplifier receiver s speaker output terminals to the PRO SW220P s HIGH LEVEL INPUT speaker terminals Be sure to connect the terminals in phase connecting positive to positive and negative to negative Wiring the subwoofer with to causes reduced bass performance To match the subwoofer s polarity with your system s polar...

Page 5: ...C outlet The STANDBY indicator lights green If the subwoofer does not receive a signal for about 11 minutes the STANDBY indicator lights red A A A AD D D DJ J J JU U U US S S ST T T TI I I IN N N NG G G G T T T TH H H HE E E E V V V VO O O OL L L LU U U UM M M ME E E E Once you have made all connections follow these steps to adjust the PRO SW220P s volume 1 Rotate VOLUME CONTROL to MIN 2 Turn on y...

Page 6: ...t This increases low bass output without affecting the mid bass output To reduce low bass output without affecting the mid bass output equally rotate FREQUENCY HZ clockwise and the subwoofer s VOLUME CONTROL counterclockwise C C C Ca a a ar r r re a e a e a e an n n nd d d d M M M Ma a a ai i i in n n nt t t te e e en n n na a a an n n nc c c ce e e e Keep the PRO SW220P dry if it gets wet wipe it...

Page 7: ...r 50 Hz 200 Hz Adjustable Frequency Response 36 Hz 200 Hz Power Voltage AC 120 V 60 Hz Power Consumption 120W Dimensions HWD 16 x 16 x 16 Inches 407 x 407 x 407 mm with feet and grill attached 1713 16 x 16 x 195 8 Inches 431 8 x 407 x 482 6 mm Weight 45 lb 20 412 kg Specifications are typical individual units might vary Specifications are subject to change and improvement without notice ...

Page 8: ...the event of a product defect during the warranty period take the product and the RadioShack sales receipt as proof of purchase date to any RadioShack store RadioShack will at its option un less otherwise provided by law a correct the defect by product repair without charge for parts and labor b replace the product with one of the same or similar design or c refund the purchase price All replaced ...

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