Cat. No.
Your RadioShack
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.
Note: To connect the subwoofer to your stereo amplifier???s wires, you need 2 banana plugs such as Cat. No. 278- 306 (not supplied).
Acoustic Suspension (sealed)
C
BA
A C
B
11 ?? 11 ?? 91/2 Inches (HWD)
.50 Cubic Feet (.47 net)
A (2) ??? 11" ?? 11" (one with 71/16" diameter cutout) B (2) ??? 11" ?? 91/2" HW
C (2) ??? 91/2" ?? 91/2" HW
CHOOSING AN ENCLOSURE
To get the best performance from your subwoofer, you must mount it inside an enclosure. An enclosure makes your subwoofer more efficient and improves its sound quality.
Some common enclosure designs are:
???Acoustic suspension (sealed)
???Ported reflex (vented)
???Single reflex bandpass (vented)
F3: 63 Hz
Ripple: 0 dB
Excursion Limited Power Handling: 79 Watts
Ported Reflex (vented)
CBA
For more information about a single reflex bandpass en- closure, see ???Single Reflex Bandpass (vented)??? on Page 2.
A
C
To learn more about and build an acoustic suspension or ported reflex enclosure, we recommend you use the book Building Speaker Systems (Cat. No.
Note: Check with RadioShack Unlimited for a
B
11 ?? 11 ?? 141/4 Inches (HWD)
.75 Cubic Feet (.70 net)
A (2) ??? 11" ?? 11" (one with 71/16" diameter cutout)
B (2) ??? 11" ?? 141/4" HW (one with 2" diameter cutout) C (2) ??? 91/2" ?? 141/4" HW
Tuning Frequency: 37 Hz
F3: 46Hz
Ripple: 1.3 dB
Excursion Limited Power Handling: 96 Watts
??1998 Tandy Corporation. All Rights Reserved.
RadioShack is a registered trademark used by Tandy Corporation.
Single Reflex Bandpass (vented)
A
C
D
B
AD
C
11 ?? 11 ?? 201/4 Inches (HWD)
1.02 Cubic Feet (.50 Sealed/.52 Vented) Inside Distance from Baffle to End Panel of
Sealed Side of Enclosure ??? 91/2"
A (2) ??? 11 ?? 11 Inches
B (1) ??? 91/2" ?? 91/2" (with 71/16" diameter cutout)
C (2) ??? 11" ?? 201/4" HW (with cutout for 3 in. vent) D (2) ??? 91/2" ?? 201/4" HW
Tuning Frequency: 73 Hz
F3:
Ripple: 0 dB
Excursion Limited Power Handling: 54 Watts
A single reflex bandpass enclosure combines the fea- tures of acoustic suspension and ported reflex designs. In this type of enclosure, one side of the subwoofer is mounted in an acoustic suspension enclosure, while the other side is mounted in a ported reflex enclosure.
A single reflex bandpass enclosure controls the move- ment 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 fre- quency response of the single 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 recom- mend that you build an acoustic suspension or ported re- flex enclosure.
CONNECTING THE SUBWOOFER TO
YOUR STEREO AMPLIFIER
We recommend you use
Note: You can mount an optional speaker plate on your enclosure (such as Cat. No.
Follow these steps to connect the subwoofer directly to your sound system.
1.Run one wire from each of the 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 conductor to expose 1/2 inch of wire.
2 inches
1/2 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.
Endcap
Speaker
Wire
4.Screw the banana plug back onto the endcap as shown here.
5.Repeat Steps 3 and 4 for each of the subwoofer???s wires.
6.Press the banana plugs into the subwoofer???s termi- nals to connect them.
2
FREQUENCY RESPONSE
Frequency (Hz)
0.5 Ft3 Acoustic Suspension0.75 Ft3 Ported Reflex1.02 Ft3 Single Reflex Bandpass (s=0.7)
SPECIFICATIONS
Specifications are typical; individual units might vary. Specifications are subject to change and improvement without notice.
3
Limited
This product is warranted by RadioShack against manufacturing defects in material and workman- ship under normal use for ninety (90) days from the date of purchase from RadioShack company- owned stores and authorized RadioShack franchisees and dealers. EXCEPT AS PROVIDED HEREIN, RadioShack MAKES NO EXPRESS WARRANTIES AND ANY IMPLIED WARRANTIES,
INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE,
ARE LIMITED IN DURATION TO THE DURATION OF THE WRITTEN LIMITED WARRANTIES CONTAINED HEREIN. EXCEPT AS PROVIDED HEREIN, RadioShack SHALL HAVE NO LIABIL-
ITY OR RESPONSIBILITY TO CUSTOMER OR ANY OTHER PERSON OR ENTITY WITH RE-
SPECT TO ANY LIABILITY, LOSS OR DAMAGE CAUSED DIRECTLY OR INDIRECTLY BY USE
OR PERFORMANCE OF THE PRODUCT OR ARISING OUT OF ANY BREACH OF THIS WAR-
RANTY, INCLUDING, BUT NOT LIMITED TO, ANY DAMAGES RESULTING FROM INCONVE-
NIENCE, LOSS OF TIME, DATA, PROPERTY, REVENUE, OR PROFIT OR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, EVEN IF RadioShack HAS BEEN AD-
VISED OF THE POSSIBILITY OF SUCH DAMAGES.
Some states do not allow the limitations on how long an implied warranty lasts or the exclusion of in- cidental or consequential damages, so the above limitations or exclusions may not apply to you.
In 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 parts and products, and products on which a refund is made, become the prop- erty of RadioShack. New or reconditioned parts and products may be used in the performance of warranty service. Repaired or replaced parts and products are warranted for the remainder of the original warranty period. You will be charged for repair or replacement of the product made after the expiration of the warranty period.
This warranty does not cover: (a) damage or failure caused by or attributable to acts of God, abuse, accident, misuse, improper or abnormal usage, failure to follow instructions, improper installation or maintenance, alteration, lightning or other incidence of excess voltage or current; (b) any repairs other than those provided by a RadioShack Authorized Service Facility; (c) consumables such as fuses or batteries; (d) cosmetic damage; (e) transportation, shipping or insurance costs; or (f) costs of product removal, installation,
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
RadioShack Customer Relations, Dept. W, 100 Throckmorton St., Suite 600, Fort Worth, TX 76102