Page 1
g
g
g
y
Illus
Illus
40-102 9.fm Page 1 Tuesday, August 10, 1999 1:32 PM
Dual Voice Coil 12-Inch Subwoofer
Your Optimus Dual Voice Coil 12Inch Subwoofer lets you increase the
bass response of your home or car
sound system. It is ideal for custom
speaker or replacement use. Its
unique dual-wound coil design lets
you connect it in a variety of ways.
FEATURES
12-Inch Polypropylene-Coated Paper Woofer with 20-Ounce Barium-Ferrite Ma
— provides
net
tight, floor-rumbling bass down to 30
Hz that you can feel as well as hear.
3
1
/8-Inch, Dual-Wound, High-Tem-
perature Copper Voice Coil
—
withstands high output from your
amplifier and high temperature after
extended play.
MOUNTING
You can install the subwoofer from
the front or back of an enclosure so
it is flush with the baffle’s surface.
Seal the mounting surface so air
cannot leak around the subwoofer.
Cat. No.
40-1029
Extra-Lon
-Throw Voice Coil
—
delivers clean, solid bass sound.
120 Watts Max Power Handlin
Capacit
— provides excellent
sound reproduction and up to 60
watts RMS per channel when connected to both channels of a stereo
amplifier .
©
1998 Tandy Corporation.
Optimus and RadioShack are registered trademarks used by Tandy Corporation.
All Rights Reserved.
For instructions on mounting and
sealing the subwoofer, see our
“Building Speaker Systems” book
(RadioShack Cat. No. 62-1087, not
supplied), available at your local RadioShack store.
Page 2
Illus
Illus
40-102 9.fm Page 2 Tuesday, August 10, 1999 1:32 PM
CONNECTIONS
The subwoofer’s dual-wound coils
have two sets of termin als so you can
connect:
• one subwoofer to both left and
right stereo amplifier channels
• two subwoofers, one to e ach ste-
reo amplifier channel
• one subwoofer to a m onaural am-
plifier
Cautions:
• Be sure to match polarity (+ to +
and – to –) between the subwoofer and the audio source.
• When mounting the subwoo fer in
a vehicle, be sure all wiring is fully
protected from sharp edges. Be
sure the audio system is off when
connecting any wires, and leave
enough slack in the wires so they
can reach the terminals easily.
Connecting Two
Subwoofers to a Stereo
Amplifier
Connecting One Subwo ofer
to a Monaural Amplifier
Connecting One Subwoofer
to a Stereo Amplifier
Illus
2
Page 3
40-102 9.fm Page 3 Tuesday, August 10, 1999 1:32 PM
SPECIFICATIONS
Nominal Impedance ...................................................................... 4 or 8 ohm ±20%
Frequency Response .......................................................................... 30 Hz–5 kHz
Free Air Resonance (Fs) Frequency ....................................................... ....... 34 Hz
Infinite Baffle Resonance Frequency ................................................. ..... ....... 31 Hz
Piston Area (SD) ..................................................................................... 0.0553 m
Maximum Power ............................................................................................ 120 W
Power Handling . ...................................................................................... 60W RMS
Flux Density (BL) ...............................................................................................7.41
DC Voice Coil Resistance (RE, ohms) ...................................... 3.4 ohms/6.8 ohms
Voice Coil Inductance (LVC at 1 kHz) ................................................ 0.22/0.84 mH
SPL ....................................................................................... 85 or 88 ±3 db/1W/1m
Moving Mass (Mms) .....................................................................................52.21 g
Electrical Q Factor (QES) ..........................................................................3.09/1.55
Mechanical Q Factor (QMS) ..............................................................................5.03
Total Q Factor ............................................................................................1 .89/1.18
Equivalent Acoustic Volume (VAS) ...............................................................163.5 L
Mechanical Suspension Compliance (CMS, UM/N) ..............................413.2 UM/N
Mechanical Mass of Cone Assembly and Free Air Load .................1 .8 oz (52.21 g)
Mechanical Mass of Cone Assembly Only ......................................1.4 oz (39.62 g)
Peak-to-Peak (Maximum) Linear Excursion ..............................
Cutout ..................................................................................10
Depth ..................................................................................... 5
Magnet Weight ............................... ................... .............. ................ 20 oz (567 gm)
Speaker Weight ............................................................................. 63 oz (1.786 kg)
5
/32 Inch (4.00 mm)
29
/32 Inches (27.7 cm)
1
/32 Inches (12.8 cm)
2
Specifications are typical; individual units might vary. Specifications are subject to
change and improvement without notice.
3
Page 4
40-102 9.fm Page 4 Tuesday, August 10, 1999 1:32 PM
Limited Ninety-Day Warranty
This product is warrant ed by RadioShac k against man ufacturing d efects in materia l and workmanship under normal use for ninety (90) day s from the date of purc hase from Rad ioShack comp anyowned stores and authorized RadioShack franchisees and dealers. EXCEPT AS PROVIDED
HEREIN, RadioShack MAKES NO EXPRE SS 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 H AVE NO LIABILITY OR RESPONSIBILITY TO CUSTOMER OR ANY OTHER PERSON OR ENTITY WITH RESPECT 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 WARRANTY, INCLUDING, BUT NOT LIMITED TO, ANY DAMAGES RESULTING FROM INCONVENIENCE, LOSS OF TIME, DATA, PROPERTY, REVENUE, OR PROFIT OR ANY INDIRECT,
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, EVEN IF RadioShack HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Some states do not allow the limitations on how long an implied warranty lasts or the exclusion of incidental or consequential damages, so the above limitations or exclusions may not apply to you.
In the event of a product defect during the warran ty period, take the product and the RadioShack
sales receipt as proof of pur cha se date to any RadioS hack s tore. Radi oSha ck wil l, at its option, unless otherwise provided by l aw: (a) correct the defect by product repair without c harge for parts and
labor; (b) replace the produc t with one of the same or similar design; or (c) refund the purchase
price. All replaced parts and pr oducts, and pro ducts on which a refund is made, become the property of RadioShack. New or rec onditioned parts and products may be used in the performance of
warranty service. Repa ired or replaced parts and produ cts 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, impr oper or abnormal usa ge, failure to fol low i nstruct ions, improper instal lation or
maintenance, alterati on, lightning or other incidence of exc ess voltage or current; (b) any repairs
other than those provi ded by a RadioShack Autho rized Service Facility; ( c) consumables such as
fuses or batteries; (d ) cosmeti c dam age; (e) transp ortatio n, sh ipping or insuranc e c osts; or (f) cos ts
of product removal, installation, set-up service adjustment or reinstallation.
This warranty gives you specifi c legal rights, and you may also have oth er rights which vary from
state to state.
RadioShack Customer Relations, Dept. W, 100 Throckmorton St., Suite 600, Fort Worth, TX 76102
We Service What We Sell
3/97
RadioShack
A Division of Tan dy Corpo ration
Fort Worth, Texas 76102
8A8N Printed in China
Loading...