Radio Shack Stereo Amplifier PT 990A User Guide

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CONTENTS  
SAFETY INFORMATION………………………………………………………………………………………………………………… 1  
IMPORTANT SAFETY INSTRUCTIONS………………………………………………………………………………………………. 2  
REMOTE CONTROLLER……………………………………………………………………………………………………………….. 3  
LOUDSPEAKER POSITIONING……………………………………………………………………………………………………….. 4  
FRONT PANEL INFORMATION………………………………………………………………………………………………………… 5  
REMOTE CONTROL INFORMATION…………………………………………………………………………………………………. 6  
REAR PANEL INFORMATION………………………………………………………………………………………………………….. 7  
CONNECTIONS  
- LOUDSPEAKER CONNECTIONS……………………………………………………………………………………………………. 8  
- AUDIO CONNECTIONS………………………………………………………………………………………………………………...9  
- DIGITAL CONNECTIONS……………………………………………………………………………………………………………… 9  
- FRONT INPUT CONNECTIONS………………………………………………………………………………………………………. 10  
- AERIAL CONNECTIONS……………………………………………………………………………………………………………… 11  
BASIC OPERATION……………………………………………………………………………………………………………………… 12  
RADIO DATA SYSTEM (OPTIONAL)……………………………………………………………………………………………………14  
TROUBLESHOOTING…………………………………………………………………………………………………………………… 15  
SPECIFICATIONS………………………………………………………………………………………………………………………16  
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SAFETY INFORMATION  
Caution:  
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To reduce the risk of electric shock, do not remove Cover (or back)  
No user-serviceable parts inside.  
Refer servicing to qualified service personnel.  
Do not expose this appliance to rain or moisture  
This lightning flash with arrowhead symbol, within an equilateral  
triangle is intended to alert the user to the presence of uninstalled  
dangerous voltagewithin the products enclosure that may be of  
sufficient magnitude to constitute a risk of electric shock to persons.  
The exclamation point within an equilateral triangle is intended to alert  
the user to the presence of important operating and maintenance  
(servicing) instructions in the literature accompanying the appliance.  
The marking of products using lasers (except for some areas). The  
label is attached to the rear panel and says that the component uses  
beams that have been classified as Class 1,which means the unit is  
utilizing laser beams that are of weaker class. There is no danger of  
hazardous radiation outside the unit  
CLASS 1  
LASER PRODUCT  
ACCESSORIES  
1. RCA cord (yellow color).  
2. Remote control.  
3. Battery AA x 2 for Remote control  
4. Instruction Manual  
1
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IMPORTANT SAFETY INSTRUCTIONS  
Caution: Read This Before Operating Your Unit.  
1. READ AND FOLLOW INSTRUCTIONS: All the safety and operation instructions should be read before the product is  
operated. Follow all operation instructions within this manual.  
2. RETAIN INSTRUCTIONS: The safety and operation instructions should be retained for future reference.  
3. HEED WARNINGS: Comply with all warnings on the product and in the operation instructions.  
4. CLEANING: Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a  
damp cloth for cleaning.  
5. GROUNDING or POLARIZATION: This product may be equipped with a polarized alternating current line plug (a plug  
having one blade wider than the other). This plug will fit into the power outlet only one way. This is a safety feature. If you are  
unable to insert the plug fully into the outlet, try reversing the plug. If the plug should still fail to fit, contact your electrician  
since it is likely you have an out of sate wall socket. Never force the plug into the socket.  
6. OVERLOADING: Do not overload wall outlets or extension cords as this can result in the risk of  
fire or electric shock. Overloaded AC outlets, extension cords, frayed power cables, damaged  
or cracked wire insulation, and broken plugs are dangerous. They may result in electric shock  
or fire hazard. Periodically examine the power cable - if its appearance indicates damage or  
deteriorated receptacles have it replaced by your service technician.  
7. POWER SOURCES: This product should be operated only from the type of power source indicated on the rear panel label. If  
you are not sure of the type of power supply to your home, consult your product dealer or local power company. For products  
intend to be operated from battery power, or other sources, refer to the operation instructions.  
8. ACCESSORIES: Do not place this product on an unstable surface or support. The product may fall,  
causing serious injury to a child or adult as well as serious damage to the product. Any mounting of  
the product should follow the manufactures instructions and use a mounting accessory  
recommended by the manufacturer. A product and cart combination should be moved with care.  
Quick stops, excessive force, and uneven surfaces may cause the product and cart combination to  
overturn.  
9. OUTDOOR ANTENNA GROUNDING: If an outside antenna or cable system is connected to the  
product, be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and  
built-up static charges. The example below is for reference only. Correct grounding should always be installed by an  
electrician.  
ANTENNA  
LEAD IN  
WIRE  
GROUND  
CLAMP  
ANTENNA  
DISCHARGE UNIT  
(NEC SECTION 810-21)  
ELECTRIC  
SERVICE  
EQUIPMENT  
GROUNDING CONDUCTORS  
(NEC SECTION 810-21)  
GROUND CLAMPS  
POWER SERVICE GROUNDING  
ELECTRODE SYSTEM  
(NEC ART 250.PART H)  
10. POWER-CORD PROTECTION: The power supply cables should be routed so that they are not likely to be walked on or  
pinched by items placed upon or against them, paying particular attention to cables at plugs and the point where they exit  
from the product.  
11. ATTACHMENTS: Do not use unauthorized attachments as they may cause faults with the unit.  
12. CONDITIONS REQUIREING SERVICE: Unplug this product from the wall outlet and refer servicing to qualified service  
personnel under the following conditions:  
a) If the unit exhibits sudden unusual operation or unusual display characteristics.  
b) If the unit exhibits sudden unusual operation or unusual display characteristics.  
c) b. If liquid has been spilled, or objects have fallen into the product.  
d) If the product has been exposed to rain or water.  
e) If the product does not operate normally by following the operation instructions, adjusting only those controls that are  
covered by the operation instructions. (NOTE: improper adjustment of other controls may result in damage and will  
often require extensive work by a qualified technician to restore the product to its normal operation).  
f)  
If the product has been dropped or damaged in any way.  
g) If the product exhibits a distinct change in performance.  
2
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IMPORTANT SAFETY INSTRUCTION  
13. SERVICING: Do not attempt to service this product yourself as removing cover may expose you to dangerous voltages or  
other hazards. Refer all servicing to qualified service personnel.  
14. LIGHTNING: For added protection for this product during a thunderstorm, or when it is left unattended and unused for long  
period of time, unplug it from the wall outlet and disconnect the antenna or cable system. This will prevent damage to the  
product due to lightning and power line surges.  
15. REPLACEMENT PARTS: Should replacement parts be required, have the service technician verify that the replacement  
parts he uses have the same safety characteristics as the original parts. Use of unauthorized replacements parts can cause  
fire or electric shock.  
16. SAFETY CHECK: Upon completion of any service or repairs to this product, ask the service technician to perform safety  
checks recommended by the manufacturer to determine that the product is in a safe operating condition.  
17. HEAT DISPERSION---Leave at least 10 cm of space between the top, back and sides of the unit and the wall or other  
components for proper ventilation.  
10cm or more  
10cm or more  
10cm or more  
10cm or more  
18. The apparatus shall not be exposed to dripping or splashing and that no objects filled with liquids, such as vases, shall be  
placed on the apparatus.  
19. NOTES ON USE  
Keep the set free from moisture.  
water,and dus t.  
Do not let foreign objects in the set.  
Avoid high temperatures  
Allow for s ufficient heat dispers ion  
when installed on a rack.  
Unplug the power cord when not  
using the set for long periods of  
time  
Do not let insecticides,benzene,and  
thinner come in contact with the set.  
Handle the power cord carefully.  
Hold the plug when unplugging the  
cord.  
*(For s ets with ventilation holes)  
Never disas semble or modify the set  
in any way.  
Do not obstruct the ventilation  
holes  
3
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REMOTE CONTROLLER  
BATTERY INSTALLATION  
By using the provided remote control unit, the receiver can be  
controlled from your listening position. To use the remote  
control unit, point it at the REMOTE SENSOR window of the  
receiver.  
Notes:  
- Even if the remote control unit is operated within the  
effective range, remote control operation may be impossible if  
there are any obstacles between the unit and the remote  
control.  
- If the remote control unit is operated near other appliance  
which generate infrared rays, or if other remote control  
devices using infrared rays are used near the unit, it may  
operate incorrectly.  
- The power is turned on/off (standby) by pressing the  
POWER button on the remote control unit in standby mode.  
Precautions concerning batteries  
-Be sure to insert the batteries with correct positive+ and  
negative polarities.  
- Use batteries of the same type. Never use different types of  
batteries together.  
- Rechargeable and non-rechargeable batteries can be used.  
Refer to the precautions on their labels.  
- When the remote control unit is not to be used for a long  
time (more than a month), remove the batteries from the  
remote control unit to prevent them from leaking. If they leak,  
wipe away the liquid inside the battery compartment and  
replace the batteries with new ones.  
1. Remove the battery compartment cover.  
2. Insert two AAdry batteries.  
Make sure that the batteries are inserted with their  
positive +and negative -poles positioned correctly.  
3. Close the cover until it clicks.  
If the distance required between the remote control unit and  
main unit decreases, the batteries are exhausted. In this case,  
replace the batteries with new one  
- Do not heat or disassemble batteries and never dispose of  
old batteries by throwing them in a fire.  
REMOTE CONTROL OPERATION RANGE  
Use the remote control unit within a range of about 7  
meters (23 feet) and the angles of up to 30 degrees aiming  
at the remote sensor.  
4
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FRONT PANEL INFORMATION  
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1. POWER ON/OFF  
Push this button to turn the unit into standby mode, push it again to turn off the unit.  
2. Stereo Direct  
Press this button ,the unit will change to stereo direct output mode, all the signal through this unit will not be amplify.  
3. DVD/CD  
Press to active the DVD inputs  
4. AUX1/AUX2  
Press to active the AUX1/AUX2 input on the rear panel.  
5. PLAYER INPUT/ST.LINE IN  
Press to select the iPod connected to iPod in on the front panel. Press it again the STEREO LINE IN jack will be actived.  
6. TAPE/PHONO  
Press to select the Cassette Deck source equipment for output through this unit.  
7. MD  
Press to active the DAB inputs.  
8. TUNER  
Press to select the built in TUNER. Press it again to select FM or AM tuning  
9. LED Indicator  
Lights green when the amplifier is turned on. Lights red when the amplifier is in standby mode or in operation.  
10. MASTER VOLUME  
Rotate this knob clockwise or counterclockwise, the master volume will be increased or decreased.  
11. USB PORT  
1.1 format USB port,.  
12. PHONES  
Jack for the stereo headphones.  
13. SPEAKER A/B  
Press it once, the speaker that connect to Speaker A outputs will work, press it again Speaker B outputss speaker will work.  
14. SPEAKER A+B  
Press this button, the speaker A&B outputss speaker will work together.  
15. DIGITAL IN  
Press this button to active the PCM digital in input .  
16 .USB  
Press it to active the USB port.  
17. TUNING +/-  
Tuner frequency up & down  
18. PLAYER INPUT  
Jack for iPod .  
19. STEREO LINE IN jack  
Connect to the stereo output terminal equipment.  
20. Balance  
Rotate this knob clockwise or counterclockwise for Balance adjustment.  
21. Bass  
Rotate this knob clockwise or counterclockwise for Bass adjustment.  
22. Treble  
Rotate this knob clockwise or counterclockwise for Treble adjustment.  
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REMOTE CONTROL INFORMATION  
5. Speaker A+B  
Press this button, the speaker A&B outputss speaker will  
work together..  
6. Memory  
Press it to store the broadcast station as a preset  
7. APS  
In tuner mode, press this button to allocate and memorize  
radio station automatically.  
8. PTY Search  
No PTY inforamtion would be displayed.  
9. ST/Mono  
Press this button to alternate between Stereo and Mono mode  
when listen to FM broadcast.  
10. Station +/-  
Press these buttons to select a preset channel during the  
tuner mode.  
11.  
When insert a MP3 player in the USB port, press this button  
to pauses the playback.  
12. Auto/Manual  
This button is used to select AUTO or MANUAL tuning for AM  
and FM stations. Press once to set to AUTO ,again for  
MANUAL  
When insert a MP3 player in the USB port press this button to  
stop the playback.  
13.  
Tuning-  
When select the built in tuner, press it to tune frequency  
down.  
When insert a MP3 player in the USB port press this button to  
select the previous track  
14.  
When insert a MP3 player in the USB port press this button to  
starts the playback  
15. USB  
Active the USB port.  
16. DVD/CD  
Press to active the DVD inputs.  
17. MD  
Press to active the DAB inputs.  
18. TAPE/PHONO  
Press to select the Cassette Deck source equipment for  
output through this unit.  
19. SPEAKER A/B  
Press it once, the speaker that connect to Speaker A outputs  
will work, press it again Speaker B outputss speaker will  
work.  
20. iPod/STEREO LINE IN  
Press to select the iPod connected to iPod in on the front  
panel. Press it again the STEREO LINE IN jack will be  
actived.  
21. BAND  
Press the button to select FM or AM.  
22. TUNER  
Press to select the built in TUNER. Press it again to select  
FM or AM tuning.  
23. AUX1/AUX2  
Press to active the AUX1/AUX2 input on the rear panel,  
24. Stereo Direct.  
Press this button, the unit will change to stereo direct output  
mode, all the signal through this unit will not be amplify.  
1. Mute  
Press this button to mute the sound, push again to cancel the  
mute function.  
2. Standy  
Push this button to turn the unit into standby mode, push it  
again to turn off the unit.  
3. Digital in  
Press this button to active the PCM digital in inpu  
4. Display  
Press this button to display the state of input source.  
25.  
Tuning+  
When insert a MP3 player in the USB port press this button to  
select the next track .  
26. Volume +/-  
Press these buttons to decrease or increase the volume.  
.
6
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REAR PANEL INFORMATION  
1. Antenna: Connection terminal for AM& FM  
2. Mains switch  
Use to interrupt the mains voltage  
3. RS232 port  
4. Analog audio In/Out  
- TAPE OUT: Connect to the line input terminals on the TAPE DECK  
- AUX IN: Connect to the line output of an external player.  
-TAPE IN: Connect to the line output terminals on the TAPE DECK.  
- DVD IN: Connect to the line output terminals on the DVD player  
- MD IN: Connect to the line output terminals on the DAB player  
5. PCM DIGITAL IN  
Optical in 1,2  
PCM Digital audio input to the digital output of CD player.  
Coaxial In 1,2  
PCM Digital audio input to the digital output of a CD player  
6. Speaker B  
For connection of loudspeaker  
Note: -The speaker impedance must be 4 and 16 Ohm  
- For optimal sound quality there must be a proper connection between the speaker terminal  
and the amplifier terminal .  
-The cable ends must not be frayed to avoid that they come into contact with each other or  
the cabinet back panel  
7. Speaker A  
The other section for connection of loudspeaker.  
8. AC CORD  
Connect to the AC mains socket.  
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CONNECTION  
LOUDSPEAKER CONNECTIONS  
Caution:  
To avoid damaging the speakers with a sudden high-level signal, be sure to switch the power off before connecting the speakers.  
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Check the impedance of your speakers.  
Connect speaker with an impedance of 8 ohms or more. The amplifiers red speaker terminals are the + (positive) terminals  
and the black terminals are the (negative) terminals.  
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The + side of the speaker cable is marked to make it distinguishable from the side of the cable. Connect this marked side  
to the red + terminals and the unmarked side is the black terminal.  
Prepare the speaker cords for connection by stripping off approximately 10 mm or less (no more as this could cause a  
short-circuit) of the outer insulation. Twist the wires tightly together so that they are not straggly.  
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1
3
1. Unscrew the knob  
2. Insert the speaker cable.  
3. Tighten the knob and secure the cable.  
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CONNECTION  
AUDIO CONNECTIONS  
Note: Do not plug in the mains power lead or turn on the unit before all connections have been made.  
Connect to source equipment using phono cables (stereo 2RCA-2RCA).  
DIGITAL CONNECTIONS  
Two types of digital audio connections can be made to this unit, optical and coaxial.  
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CONNECTION  
FRONT INPUT CONNECTIONS  
The front panel iPod input is for temporary connections to the iPod player.  
10  
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CONNECTIONS  
AERIAL CONNECTIONS  
FM aerial  
Connect an aerial to the FM 75 ohm socket (a simple wire aerial is supplied for temporary use). Extend the lead and move the  
aerial around until you get the best reception. For continued use, we strongly recommended using a 75 ohm outdoor FM aerial.  
AM loop aerial  
Connect each end of the single length antenna to the antenna terminals. Place the antenna as far from the main system as  
possible to prevent unwanted noise and to obtain optimum reception. If the AM loop aerial provided does not receive sufficient  
reception, it may be necessary to use an outdoor AM aerial.  
FM aerial  
OR  
FM external aerial  
AM loop aerial  
OR  
AM external aerial  
AM  
LOOP  
FM 75  
Ground  
11  
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BASIC OPERATION  
PHONES jack  
For private listening, insert optional (not included)  
headphones (1/4-inch plug) into the PHONES jack, and then  
the center and surround speaker will be cut automatically.  
iPod in jack  
The input ports are for iPod player. It can connect a iPod  
player directly or connect to a iPod docking.  
Balance/Bass/Treble control knob  
BALANCE control is used to adjust the level of speaker .  
BASS control is used to adjust the level of the low frequency  
sound range.  
TREBLE control is used to adjust the level of high frequency  
sound rang.  
USB  
1. Press the Main Power ON/OFF Switch on the rear panel  
to ON.  
2. Press the Power On button on the front panel to switch on  
the unit.  
3. Select the desired source by pushing the corresponding  
button  
USB 1.1 format port, can connect a USB stick or connect a  
MP3 music player directly. When connect a MP3 player, you  
can use the remote to achieve the follow function: PLAY,  
PAUSE, STOP, SKIP, PREVIOUS  
- DVD/CD  
- AUX/STEREO LINE IN  
- iPod  
- MD  
- TUNER  
- TAPE  
- USB(1.1 format only)  
- Digital in  
Speaker channel selection  
IF you want one section speaker work and another section  
stop, press SPEAKER A/B button on the front panel or on the  
remote control.  
If you want two section speakers work together, press  
Speaker A+B button on the front panel or on the remote  
control  
this button is use to select below inputs as follow  
COAX 1  
COAX 2  
OPT 1 OPT 2  
12  
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BASIC OPERATION  
Stereo  
Radio Operations  
FM stereo broadcasts are received in stereo and the “  
indicator lights on the display.  
Mono  
To compensate for weak FM stereo reception, select this  
mode. Reception will now be forced monaural, reducing  
unwanted noise.  
If DISPLAY button is pressed, the details of incoming source  
will be displayed.  
Automatic Tuning  
1. Press the Main Power On/Off switch on the rear panel  
first, then press the Power On/Off button on the front  
panel to turn this unit on.  
2. Press the Tuner button on the front panel or on the  
remote control, then press the Band button on the  
remote to select FM or AM.  
3. Press the AUTO/MANUALbutton on remote control to  
activate automatic selection. (Default mode is Manual  
selection) (Note: Auto appears on the display.)  
4. Press TUNING + and TUNING - to select the station you  
want to listen to. When a station is tuned in, the tuning  
process will stop automatically. (Automatic selection)  
5. Press TUNING + or TUNING - again to select another  
channel.  
Preset Tuning  
This facility is used to store FM, AM broadcasting from  
channel 1 to15 respectively.  
How to select preset stations  
Press the STATION buttons(numbers)on remote control to  
select a preset channel during the tuner mode.  
Manual Memory Presetting  
1. Press the Tuner button on the front panel or on the remote  
control, then press the Band button on the remote to select  
FM or AM.  
2. Press the TUNING + or TUNING - buttons to select a  
frequency channel you want to preset.  
3. Press the MEMORY button briefly.  
4. While the MEMindicator is lit, press TUNING+ or  
TUNING - button to select a preset station. The station  
number will be displayed on the screen.  
5. Press the MEMORY button to confirm.  
To store more stations, repeat steps 3 to 6.  
Manual Tuning  
It is for selecting stations, which cannot be tuned  
automatically (manual selection)  
To tune a channel manually:  
Skip step 3 in the above procedures. Each time the  
TUNING+ or TUNING- button is pressed momentarily (0.5  
second or less), the frequency changes by a fixed step: FM:  
50 kHz steps; MW: 10 kHz steps.  
Two FM modes available:  
Press ST/MONO button on remote control to select Stereo  
mode or Mono mode.  
13  
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RADIO DATA SYSTEM (Optional)  
RADIO DATA SYSTEM (RDS)  
RDS is a method for the transmission of additional  
information from local Radio Stations. It can only operated in  
FM mode. For example, name of the station broadcasting,  
name of the program or the type of program will be shown on  
the multi-function display.  
d) RT (Radio text)  
Press DISPLAYon remote control until RTappears.  
Some Text messages will be shown.  
Note: NO RTwill be shown if the signal from local radio  
It functions only when the local broadcasting stations have  
the RDS transmission and the signal is strong enough.  
station is not strong enough or no such service.  
PTY SEARCH (Program Type Search)  
Press DISPLAYon remote control, there are functions for  
PS, PTY, WAIT CT and RT.  
1. Press the PTY SEARCH on remote control, PTY  
SELECTwill flash on the display.  
After you have selected the radio program, press DISPLAY”  
on the remote control, and then the information of the  
program will be shown on the screen.  
2. Press TUNING + /- to choose the program type, for  
example, NEWS, SPORT, etc.  
a) PS (Program Service Name)  
3. Press PTY SEARCHagain once you choose the  
program type.  
Press DISPLAYon remote control until PSappears. The  
current station name will be shown.  
4. When the type of program tuned in, it will stop searching,  
otherwise, NO FOUNDwill appear.  
Note: NO PSwill be shown if the signal from local radio  
station is not strong enough or no such service.  
APS (Auto Program Search)  
b) PTY (Program Type)  
1. Select your FM or AM band.  
Press DISPLAYon remote control until PTYappears.  
2. Pressing the APSon remote control, it will search the  
The current name type of the program will be shown.  
available stations.  
The searched stations will be  
memorized in the respective band memory up to  
maximum 15 memories.  
Note: NO PTYwill be shown if the signal from local radio  
station is not strong enough or no such service.  
Note: Weak station may also be storied in memorizes, so  
manual memory presetting may be needed in order to have  
better receiving.  
c) CT (Clock - Time)  
Press DISPLAYon remote control, then WAITING CT”  
will appear.  
The current time from Radio Station will be shown, e.g. 15:30  
Note:  
1. The Clock - Time will be only transmitted from local radio  
station once a minute, so you need to wait for less than 1  
minute to show the result.  
2. NO CTwill be shown if the signal from local radio  
station is not strong enough or no such service.  
14  
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TROUBLESHOOTING  
To determine any problem with your receiver, always check the most obvious possible causes first. If any problem still remains  
after your having checked the items below, consult your nearest dealer.  
Problem  
Probable Cause  
Suggestion  
Amplifier  
When listening to the music in stereo.  
Left/right speakers reversed.  
Low hum or buzz sound  
Speakers are connected wrong.  
After checking, if needed, reconnect.  
Power cords or lighting placed near this  
product.  
Place this product as far as possible  
from lighting or power leads  
Sound is only heard from one channel  
One of the input cords is disconnected.  
Connect the input leads and  
The BALANCE control is set to one side. adjust the BALANCE control.  
Sound cuts off when listening to the  
music or no sound even though power is prescribed for this unit.  
ON.  
Speaker impedance is less than  
After turning off the power and then  
turning it on again, reduce the volume or  
change to the correct 8 ohm speakers.  
Check all speakers for correct polarity.  
Low bass response.  
Speaker polarity (+/-) is reversed.  
Tuner  
An unusual hissing noise is heard when  
listening to the broadcast in stereo, but  
not heard when listening monaurally.  
A slight noise may be heard because the Try reducing the treble sound by turning  
method used for modulation of FM  
stereo broadcasts in different than that  
used for monaural broadcasts.  
Poor location and/or direction of the  
antenna. Transmitted station is too far  
away.  
the treble controls.  
Noise is excessive in both stereo and  
monaural broadcasts.  
Set the FM mode to monaural by  
pressing the STEREO/MONO button.  
(Note that the broadcast will then be  
heard as monaural sound)  
Sound is distorted and/or the volume  
level becomes low.  
Excessive distortion in speaker output  
Broadcast signals are poor or poor  
antenna placement  
Poor reception area  
If an indoor antenna is being used,  
change to an outdoor antenna  
Try using an antenna with more  
elements.  
Remote Control Unit  
Remote control not working  
The batteries are exhausted.  
Replace with new batteries.  
The remote control unit is too far from  
Operate the Remote Control unit within  
the receiver or out of the effective range. the effective range  
15  
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SPECIFICATIONS  
Max Power Output:  
A Speaker :  
300W×2CH (RMS,THD=0.25%,8 ohm)(20Hz-20kHz)  
48 ohm  
B Speaker:  
48 ohm  
A+B Speaker  
8 ohm  
Total Harmonic Distortion:  
Inter-modulation distortion:  
requency Response:  
Signal/Noise ratio:  
Signal/Noise ratio:  
Channel Separation:  
Audio Analogue input  
Senstivity/Impedance:  
Tuning Range:  
<0.005 (Vin=200mV, 1W Power output)  
<0.008  
+/- 0.5dB, 20Hz-22kHz  
110 dB(Digital In)  
110 dB(Analog In)  
>70dB  
200mV/47 Kohm  
FM 87.5 MHz-108MHz,AM 530 kHz-1710 kHz  
(FM preset 20 station, AM preset 10 station)  
FM-0.7%.AM-1%1.3%  
THD:  
Signal/Noise ratio  
Antenna inputs:  
General:  
FM: 68dB,AM: 45dB  
FM75 ohms unbalance. AM: Loop Antenna  
Mains voltage:  
Dimensions:  
110V-60Hz  
434(W)×317(D)×134(H)mm / 17.09x 12.48x 5.28inches  
Option  
USB multimedia player for audio  
*Design and specifications are subject to change without notice.  
16  
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