Radio Shack PRO-CSW1200 User Manual

PRO-CSW1200 12" Car Subwoofer

15 × 15 × 13

Inches (HWD)

1.25 Cubic Feet

A (2) — 15

×

15" (one with 11

16

diameter cutou t)

B (2)

15

×

12" HW

C (2) — 13

×

12" HW

F3: 46 Hz

Ripple: 0.31 dB

Excursion Limited Power Handling: 200 Watts

15 × 19 × 17

Inches (HWD)

2.25 Cubic Feet

A (2)

15

×

19" (one with 11

16

and 4

diameter cutout)

B (2) — 15

×

16

HW

C (2)

17

×

16

HW

F3: 38 Hz

Ripple: 2.0 dB

Excursion Limited Power Handling: 200 Watts

Tuning Frequency: 36 Hz

C

C

A

A

B

B

Cat. No.

40-1019

Your RadioShack PRO-CSW1200 12" Car Subwoofer
lets you increase the bass response of your vehicle’s
sound system. When mounted inside an enclosure, your
sub-woofer’s high-output, low-distortion design provides
quality, bass sound reprodu ction. The subwoofer’s long ­travel voice coil lets it handle high input power with ease.

To connect the subwoofer to your stereo amplifier’s

Note:

wires, you need 2 banana plugs such as Cat. No. 278­306 (not supplied).

CHOOSING AN ENCLOSURE

ENCLOSURE SIZES

After you choose an enclosure type for your subwoofer,
for the best results, build the enclosure to the dimensions
recommended in this section.

Acoustic Suspension (sealed)

C

"

—

B

A

C

B

1

/

2

1

/

"

1

/

"

2

A

"

To get the best performance from your subwoofer, you
must mount it inside an enclosure. An enclosure m akes
your subwoofer more efficient and improves its sound
quality.

Some common enclosure designs are:

• Acoustic suspension (sealed)

• Ported reflex (vented)

• Single reflex bandpass (vented)

For more information about a single reflex bandpass en­closure, see “Single Reflex Bandpass (vented)” on
Page 2.

To learn more about and build an acoustic suspension or
ported reflex enclosure, we recommend you use the book

Building Speaker System s

(Cat. No. 62-1087A, available
at your local RadioShack store) along with this Owner’s
Manual. That book has com plet e in format ion ab out build ­ing enclosures, including obtaining construction materi­als, and design and construction tips.

Check with RadioShack Unlimited for a pre-built

Note:

enclosure for this subwoofer.

RadioShack is a registered trademark used by Tandy Corporation.

Ported Reflex (vented)

© 1998 Tandy Corporation.

All Rights Reserved.

—

1

/

2

"

—

1

/

"

"

1

/

"

1

/

"

2

1

/

"

2

"

2

Single Reflex Bandpass (vented)

,

,

,

,

,

,

,

,

,,

,,

,,

,,

,,

,,

,,

,,

Speaker

Wire

Endcap

,

,

,

,

,

,

,

,

,,

,,

,,

,,

,,

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,

,

,

,

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D

C

B

A

You can mount an optional spe aker plate on your

Note:

enclosure (such as Cat. No. 274-630) to mak e it easy to
connect the subwoofe r to your stereo amplif ier. This lets
you connect the subwoofer to the plate then conne ct the
plate to your stereo amplifier.

Follow these steps to connect the subwoofer directly to
your sound system.

A

D

C

15 × 15 × 201/4 Inches (HWD)

2.5 Cubic Feet (.96 Sealed/1.54 Vented)

Inside Distance from Baffle to End Panel of

—

"

8

91/

diameter cutout)

HW

B (1)

C (2)

Sealed Side of Enclosure

—

A (2)

—

2

131/

—

24" × 15" HW (with cutout for two 4 in. vents)

D (2)

"

× 131/

—

15 × 15 Inch es

"

2

(with 91/

131/

"

2

× 241/

16

"

"

2

Tuning Frequency: 66 Hz

F3: 43–101 Hz

Ripple: .3 dB

Excursion Lim ite d Pow er Han dlin g: 20 0 Watt s

A single reflex bandpass enclosure combines the fea­tures of acoustic suspension and ported reflex designs. In
this type of enclosure, one side of the subwoofer is
mounted in an acoustic suspension en closure, while the
other side is mounted in a ported reflex enclosure.

A single reflex bandpass enclosure controls the move­ment of the speaker’s cone at low frequencies (like an
acoustic suspension enclosure), and has the ability to
sacrifice efficiency for deeper bass or vice versa. The fre­quency response of the sing le reflex bandpass enclosure
is controlled by the volume of the enclosure.

Due to the complexity of its construction, a single reflex
bandpass enclosure can be difficult to design and build. If
you are inexperienced at building enclosures, we recom­mend that you build an acous t ic sus pension or port ed re­flex enclosure.

1. Run one wire from eac h of t he subwoofer’s terminals
to the stereo amplifier.

2. Separate each wire’s two conductors at both ends for
a length of about 2 inches, then strip the insulation
from the ends of each con ductor to expos e

1

/2 inch of

wire.

2 inches

2 inches

1

1/2 inch

/2 inch

3. Twist the endcap from a banana plug (not supplied)
to remove it, route one of the speaker’s wires through
the endcap, then fold the exposed wire around the
top of the endcap.

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4. Twist the banana plug back onto the endcap as
shown here.

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5. Repeat Steps 3 and 4 for each of the subwoofer’s
wires.

6. Press the banana plugs into the subwoofer’s termi­nals to connect them.

CONNECTING THE SUBWOOFER TO
YOUR STEREO AMPLIFIER

We recommend you use 12-gauge or thicker wire (such
as Cat. No. 278-1268, not supplied ) to connect the sub­woofer to your stereo am plifier. For the m aximum bass
response and the best overall performance, be sure to
connect + to + and

2

to –.

–

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