Radio Shack 40-244 User Manual

40-244.fm Page 1 Wednesday, June 30, 1999 2:33 PM

High Power Stereo Speaker Control Center

Press open the desired
ter. Insert the speakers’ positive (
(red) terminals, an d negative (
(black) termina ls, according to the r espective

R

(right) terminals. Then press the tabs to close them.

Terminal Buttons

Your RadioShack High Power Stereo Speaker Control
Center lets you connect up to four separate pairs of
speakers to your stereo receiver/amplifier. The control
center is especially convenient if you have speaker set s
in different rooms an d want to t urn them on and of f inde­pendently.

The control center lets you use one to four sets of spe ak­ers at a time, and is designed to operat e with a stere o re­ceiver/amplifier that has a maximum of 100 watts per
channel, and with speak er sys tems that have a min imum
impedance of 8 ohms (see “Impedance Chart” on
Page 2).

Press open the
insert your receiver/amplifier’s positive (+) wires into the
positive (red) terminals, and negative (–) wires in the neg­ative terminals. Then press the tabs to close them.

SPK

terminals on the control cen-

–

) wires into the negative

Open Close

AMP

terminals on the control center, then

Cat. No.

+

) wires in the positi ve

40-244

L

(left) and

Speaker
Terminals

MAKING THE CONNECTIONS

The control center divides the po wer from your receiver/
amplifier differently to its speaker terminals. (This is espe­cially noticeable when you connect only one pair of
speakers. If you connec t mo r e tha n on e pai r of s pea ke rs ,
see “Impedance Char t” on Page 2 to select the best ter­minals to connect.) F or the best performance, make t he
connections based on how frequently you use each set of
speakers.

• Connect the most frequently used speakers to the
terminals marked

• Connect the speak ers you use leas t often to the te r­minals marked

• Connect any other speakers to the terminals mark ed

SPK B

and C.

Cautions:

To avoid damaging y our s pe ak er s or r ec eiver /

amplifier:

• Be sure your recei ver/amplifier’s power is turned off
before you make the connections.

SPK A

SPK D

.

.

Notes:

• If your receiver/amplifier has more than one set of
speaker terminals (

A

and B), connect only one or the

other to the control center.

• For the best res ults, we recommend 18-gauge, two
conductor speake r wire (not supplied) for most con­nections. If you plan to locate the speakers further
than 80 feet from the control center, use a heavier
gauge of wire.

Your local RadioSh ack store carries a wide selection of
speaker wire and accessories.

OPERATION

Caution:

its volume to t he lowes t setting before changing the con­trol center’s settings.

To turn on a pair of speakers connected to the control
center, simply press in th e desired button (
For example, to turn on t he set of sp eaker s conne cted t o

SPK A,

To avoid damagin g your receiver/ampl ifier, set

A, B, C

, or D).

press A.

• Never let the speaker wire’s bare ends touch each
other or the adjacent terminals on the control center.

• Do not connect more than one pair of speakers to
each set of terminals.

©

1999 Tandy Corporation.

RadioShack is a registered trademark used by Tandy Corporation.

All Rights Reserved.

To turn off a pair of speakers, press the button again so it
is in the “out” position.

40-244.fm Page 2 Wednesday, June 30, 1999 2:33 PM

: If no speakers are connec ted to a set of termina ls

Note

A, B, C

(

, or D), do not press in the correspo nding control

button.

IMPEDANCE CHART

Impedance is a measureme nt of the load plac ed on your
receiver/amplifier by the speakers. The load placed on
your receiver/amplifier from the control center will vary
depending on how many pairs of speakers you turn on at
one time, and on which sp eakers you tu rn on. The chart
below shows the impedance for all possible combinations
of 8-ohm speakers.

Speaker Sets On

A, B, C or D 8
A + B 16
A + C 4
A + D 4
B + C 4
B + D 4
C + D 16
A + B + C 5.3
A + B + D 5.3

Impedance

((((ΩΩΩΩ))))

Limited Ninety-Day Warranty

This product is warran ted by RadioShack against manufacturin g defects in
material and workmanship 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 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 limita tion s on how lon g an i mp lied w arran ty la sts
or the exclusion of in cidental or c onsequential da mages, so the a bove limita­tions or exclusions may not apply to you.
In the event of a product defect during the war ranty period, ta ke the product
and the RadioShack sales receipt as proof of purchase date to any Ra­dioShack store. RadioShack will, at its o ption, unless otherwise provided by
law: (a) correct the defect by produ ct rep air wi tho ut cha rg e for pa rts an d labo r;
(b) replace the product with one of the same or similar design; or (c) refund the
purchase price. All re placed part s and products, and products on w hich a re­fund is made, become the property of RadioShack. New or reconditioned parts
and products may be used in the performance of warranty service. Repaired or
replaced parts an d products are warra nted 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 cau sed by or attributa ble
to acts of God, abuse, ac cident, misuse, improper or abn ormal usage, fai lure
to follow instructions, improper installation or maintenance, alteration, lightning
or other inciden ce of excess voltage or current; (b) a ny repairs other than
those provided by a Radio Shack Au thorized Service Facility ; (c) consu mabl es
such as fuses or batte ries; (d) cosmetic da mage; (e) transp ortation, shipp ing
or insurance costs; or (f ) costs of prod uct removal, in stallation, set- up service
adjustment or reinstallation.
This warranty gives you specif ic legal rights, and you may also have other
rights which vary from state to state.

RadioShack Customer Relations, 200 Taylor Street, 6th Floor,

Fort Worth, TX 76102

We Service Wh at We Sell

04/99

A + C + D 5.3
B + C + D 5.3
A + B +C + D 8

SPECIFICATIONS

Audio Power Handling ........................ 50 W (R.M.S.)/ch,

100 W (Max)/ch

Frequency Response ............................ 20 Hz to 20 kHz

Channel Separation.................................................80 dB

Crosstalk between channels....................................50 dB

Speaker terminal wire size requirements .......14–22 awg

RadioShack

A Division of Tandy Corporation

Fort Worth, Texas 76102

06A99 Printed in

Taiwan