Radio Shack 120-2157 User Manual Download Page 7

    optional equipment, designed to run from a switched source, that you 
    want the stereo to turn on and off (such as a booster or a power 
    antenna).  Cut the loop at the end and strip about 1/2 inch of 
    insulation for connection. 
 
Note:  This wire does not provide power to the components.  It simply 
       turns them on or off.  If you do not use this wire, secure it with 
       a wire tie and do not let it touch metal. 
 
Connecting an Equalizer/Booster 
 
If you are connecting the stereo to a separate equalizer or booster, you  
need additional wires (not included). 
 
To increase the total power output from your system, connect the R (right)  
and L (left) line output jacks on the back of the stereo and blue/white  
wire, if necessary, to the equalizer or booster. 
 
Refer to the equalizer/booster's owner's manual for directions. 
 
Connecting Speakers 
 
If you are using both front and rear speakers, follow these steps to  
connect the harness with the 14-pin connector to the speakers.  If you are  
using only one pair of speakers, follow Steps 1 - 4 only. 
 
1.  Connect the gray wire to the right front speaker's positive terminal. 
    This terminal is usually marked with a plus (+) sigh or red mark. 
 
2.  Connect the gray/black wire to the right front speaker's negative 
    terminal.  This terminal might be marked with a minus (-) sigh, or it 
    might not be marked at all. 
 
3.  Connect the white wire to the left front speaker's positive terminal. 
 
4.  Connect the white/black wire to the left front speaker's negative 
    terminal. 
 
5.  Connect the violet wire to the right rear speaker's positive terminal. 
 
6.  Connect the violet/black wire to the right rear speaker's negative 
    terminal. 
 
7.  Connect the green wire to the left rear speaker's positive terminal. 
 
8.  Connect the green/black wire to the left rear speaker's negative 

Summary of Contents for 120-2157

Page 1: ...10 Track Programmable lets you program up to 10 tracks from the Memory loaded disc into memory for playback Audible Search lets you rapidly play a CD in either direction to locate a desired section o...

Page 2: ...n is detected Preset Memory Scan scans all stations stored in memory playing each for 5 seconds Advanced FM Optimizer automatically adjusts the tuner s stereo Circuitry separation and high frequency r...

Page 3: ...um with increased dynamic performance This stereo is made and tested to meet exacting safety standards It meets FCC requirements and complies with safety performance standards of the U S Department of...

Page 4: ...it to ground and power optional components and your speakers Then test the connections disconnect the stereo mount it in your vehicle and reconnect it The instructions in this manual are arranged in t...

Page 5: ...power some optional components and speakers IMPORTANT Do not cut these wires If you cut any wire you cannot obtain a refund or exchange on this product However your local Radio Shack store will provi...

Page 6: ...your vehicle s negative battery terminal 2 Connect the black GROUND wire to a chassis ground such as a metal screw attached to a metal part of the vehicle s frame Be sure that the screw is not insula...

Page 7: ...ual for directions Connecting Speakers If you are using both front and rear speakers follow these steps to connect the harness with the 14 pin connector to the speakers If you are using only one pair...

Page 8: ...u verify that the buttons display light follow the instructions in Mounting the Stereo below CAUTION If you played a CD while testing the connections be sure to remove the CD from the stereo before co...

Page 9: ...e short end of the supplied mounting bolt to the back of the stereo 6 Reconnect the wire harness and the antenna 7 Slide the stereo into the sleeve until it locks into place 8 If you are securing the...

Page 10: ...bolt from the mounting hole Or remove the bolt holding the metal strap attached to the back of the stereo 3 Press REL to remove the stereo s control panel 4 Insert the supplied keys into the slots at...

Page 11: ...hange the clock display to a 24 hour format 24 HR lights 4 Repeat Steps 2 3 to return to the 12 hour format 12 HR lights Setting the Time 1 Turn the stereo off and leave the vehicle s ignition on 2 Pr...

Page 12: ...number 0 40 appear WARNING To protect your hearing do not listen at high volume levels Slowly increase the volume to a comfortable listening level Audio Control Repeatedly press SEL LD until BAS Bass...

Page 13: ...ng the Sound above for information about changing the stereo s other settings The Auto Loc mode in Seek tuning first tries to tune a relatively strong or local station If it searches a band completely...

Page 14: ...S AS for at least 2 seconds The tuner searches the band storing the first 6 strongest stations in ascending order then resumes normal radio reception of the last stored station CAUTION Stations you st...

Page 15: ...This is not a malfunction Playing a CD 1 Insert a CD label side up in the slot The player gently grabs the disc and automatically loads it CAUTION Do not use force If you encounter resistance to load...

Page 16: ...then reinsert Note If you eject a CD while it is playing but do not remove it from the CD player the CD player automatically draws the CD back in after about 15 seconds Shuffle Play You can set the CD...

Page 17: ...e During programmed play P and the program number memory appear Press DISP to see the elapsed time and track number Within 4 seconds press DISP again to see the current time for about 4 seconds 4 To c...

Page 18: ...auxiliary signal source Repeatedly press MODE The stereo switches from the CD player to the AUX input to the radio back to the CD player...

Page 19: ...s for a Class B digital device pursuant to Part 15 or the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment...

Page 20: ...ven though a compact disc is durable treat the CD surface with care Do not write on either side of the CD particularly the non label side signals are read from the non label side Do not store CDs in h...

Page 21: ...is blown replace it Use only standard 1 1 4 inch fuses with the proper rating The red 12V TO IGNITION wire s fuse must be 0 5 amps The yellow 12V TO BATTERY wire s fuse must be 12 amps CAUTION The su...

Page 22: ...B Image Rejection 60 dB 65 dB 20 dB Selectivity 70 dB 40 dB 55 dB Signal to Noise S N 65 dB 50 dB 45 dB Stereo Separation 33 dB Usable Sensitivity 3 uV 16 uV 1 uV CD Player Frequency Response 20 Hz 20...

Page 23: ...und Speaker Output Impedance 4 Ohms Power Output RMS 22 Watts x 4 CH Chassis Size HWD 1 15 16 x 6 11 16 x 5 7 8 Inches 50 x 178 x 150 mm Weight 4 lbs 1 8 kg Specifications are typical individual units...

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