background image

2 X 50 Watt Truck Amp  (120-1971)     Features          Faxback Doc. # 8286 
 
The Optimus 2 x 50 Watt Trunk Mount Amplifier is designed to give added 
punch and power to your automobile's existing stereo system.  The 
amplifier produces up to 50 watts per channel of clean, powerful sound at 
all audio frequencies with minimum distortion. 
 
Other features include: 
 
                 Full MOSFET Power Supply - Produces enough power to 
                                            supply the main amplifier and 
                                            has a considerable amount of 
                                            reserve power for peak "high 
                                            demand" situations. 
 
                Automatic Power Switching - Powers the amplifier when you 
                                            turn on/off your automobile's 
                                            stereo system. 
 
High or Low-Level Input Signal Compatible - Accepts either high-level 
                                            (speaker) or low-level (pre- 
                                            amplifier) input signals to 
                                            match your stereo system's 
                                            output for best performance. 
 
                      Input Level Control - Lets you adjust the level 
                                            (high or low) of audio 
                                            signals that enter the 
                                            amplifier. 
 
              Thermal Overload Protection - Automatically shuts down the 
                                            amplifier when it overheats 
                                            or when its load or DC power 
                                            output is shorted. 
 
  14k Gold-Plated Color Speaker Terminals - High conductivity and minimum 
                                            impedance.   
 
WARNING: If you live in a high temperature area, we recommend 
         you install cooling fans on the amplifier to provide a 
         better operating temperature environment.  Contact your 
         local Radio Shack store for a suitable cooling fan. 
 
If the connectors on your vehicle or automobile's stereo system are not 
compatible with the amplifier's connectors, contact your local Radio 
Shack store.  Radio Shack stores sell adapter harnesses for many vehicles. 

Summary of Contents for 120-1971

Page 1: ...vel speaker or low level pre amplifier input signals to match your stereo system s output for best performance Input Level Control Lets you adjust the level high or low of audio signals that enter the...

Page 2: ...Do not modify the amplifier s wiring as this voids its warranty For your permanent records we suggest you record the amplifier s serial number The number is on the bottom of the amplifier...

Page 3: ...nd test it to be sure it works Do not permanently mount the amplifier until you are sure the connections are correct CHOOSING A MOUNTING LOCATION Choose a mounting location that meets the following re...

Page 4: ...1 The Amp is overheated 2 The speaker wires are shorted 3 The speaker s impedance is below the rated output impedance 4 The output power terminals are shorted loaded down 5 The unit is broken...

Page 5: ...NOTE Many modern vehicle parts are made of plastic or other materials that do not conduct electricity You must connect the black ground wire to a metal part that is not insulated from the vehicle s fr...

Page 6: ...A cables for dash to trunk mounting We recommend Radio Shack Cat No 43 2356 Follow these steps to connect the stereo system s RCA jacks to the amplifier s LOW INPUT terminals 1 Plug the RCA cable into...

Page 7: ...ect the common speaker wires to both of the amplifier s L and R negative terminals 3 Connect the left speaker s positive wire to the amplifier s left terminal 4 Connect the left speaker s negative wir...

Page 8: ...ou turn on your radio cassette player The POWER indicator lights when the amplifier is on SETTING THE INPUT LEVEL CONTROL LEVEL lets you adjust the level of audio signals that enter the amplifier For...

Page 9: ...cool down before you restart LISTENING SAFELY To protect your hearing follow these guidelines Do not listen at extremely high volume levels Extended high volume listening can lead to permanent hearin...

Page 10: ...en lights fade at power up and the unit loses power A Check the 12 V power lead to make sure when you turn on the remote switch on the voltage level doesn t drop Make sure the power lead is heavy gaug...

Page 11: ...e of electronic devices and distort or melt plastic parts Handle the amplifier gently and carefully Dropping it can damage circuit boards and cases and can cause the amplifier to work improperly Keep...

Page 12: ...Response 20 20 000 Hz 3dB Input Impedance 10k Ohms Input Sensitivity for 10 THD Output Power Low Input 250mV High Input 2 5V Power Supply Voltage DC 14 4V Negative Ground 10 5 16V Matching Speaker Imp...

Page 13: ...GROUND 6 3mm r FORK TERMINAL 6 ORG WHT DIMMER STRIP SOLDER 7 PINK WHT PHONE MUTE 8 WHITE AWG 20 FRONT L 2p CORD 9 GRAY FRONT R 10 11 12 RED AWG 20 12 V TO 250 1A FUSE 24M M IGNITION TRANS STRIP SOLDER...

Page 14: ...RG WHT DIMMER STRIP SOLDER 7 PINK WHT PHONE MUTE 8 WHITE AWG 20 FRONT L 2p CORD 9 GRAY FRONT R 10 GREEN REAR L 11 VIOLET REAR R 12 RED AWG 20 12 V TO 250 1A FUSE 24M M IGNITION TRANS STRIP SOLDER 13 Y...

Page 15: ...SOLDER 7 PINK WHT PHONE MUTE 8 WHITE AWG 20 FRONT L 2p CORD 9 GRAY FRONT R 10 GREEN REAR L 11 VIOLET REAR R 12 RED AWG 20 12 V TO 250 1A FUSE 24M M IGNITION TRANS STRIP SOLDER 13 YELLOW 12 V TO 250 1A...

Page 16: ...White Right Brown Left Gray Left Red 12 V Power REAR GRN BLK Right WH BLK Right BR BLK Left GRAY BLK Left Orange S P L Black Ground Red w Memory White Backup CJD ir 02 28 96 LN 03 04...

Reviews: