Optimus 744 owner manual Specifications, Amplifier

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13-1291.fm Page 41 Wednesday, July 14, 1999 6:29 PM

SPECIFICATIONS

AMPLIFIER

 

 

Frequency Response

40 Hz–20 kHz ± 3 dB

RMS Output Power (1% THD into 8 Ohms at 80 Hz–15 kHz)

.......15 Watts/Channel

Input Sensitivity/Impedance (at 1 kHz, AUX IN)/

 

Output (15 W Volume Max)

350 mV/47 kOhm

TUNER (FM)

 

 

Frequency Range

87.5–108.0 MHz

Usable Sensitivity

20 dB

Signal-to-Noise Ratio

50 dB

TUNER (AM)

 

 

Frequency Range

530 –1720 kHz

Sensitivity

58 dB

Signal-to-Noise Ratio

45 dB

DUAL CASSETTE DECK

 

 

Frequency Response

125 Hz–8 kHz ± 6 dB

Track Format

4 Tracks, 2 Channels

Signal-to-Noise Ratio (Nominal)

45 dB

Wow and Flutter

0.35% Max (WRMS)

Tape Speed

4.8 cm/Sec.

Normal Tape

125 Hz–8 kHz ± 6 dB (PLAY)

CD CHANGER

 

 

CD Capacity

21 CDs

Frequency Response

40 Hz–18 kHz ± 3 dB

Signal-to-Noise Ratio

65 dB

Wow and Flutter

Virtually undetectable

CD Used

5-inch (120 mm)

Sampling Frequency

44.1 kHz

Optical Source

Non-Contact 3-Beam Semiconductor Laser

Number of Channels

2, Stereo

CD Rotation Speed

500–200 RPM (Constant Linear Model)

Signal Quantization

16-bit

INFRARED REMOTE CONTROL

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Contents System FCC Wants YOU to Know Dual Cassette Deck FeaturesCD Changer Stereo Tuner Other Special FeaturesContents Disc Scan Connecting the Front Speakers Connecting SpeakersConnecting Rear Speakers PreparationConnecting the AM Loop Antenna Connecting AntennasRemoving the CD Protection Lock Connecting the FM AntennaConnecting Power Connecting AN Additional Audio SourceResetting the CD Changer Installing Batteries in the Remote ControlListening Safely Connecting HeadphonesUsing the System Using the Remote ControlBasic Operation System DisplaysUsing Mute Using the Preset Graphic Equalizer Manual Tuning Using the TunerStoring Preset Stations Preset TuningAutomatic Tuning Recalling a Preset Station Loading CDS Using the CD ChangerFm Page 19 Wednesday, July 14, 1999 629 PM Removing CDS Selecting Playing a CDTo stop play, press Stop on System or on the remote control Audible Search Displaying Information About CDsSkip Play Repeat Play Random PlayMusic Scan Random Repeat PlayProgramming and Playing a Sequence Programmed PlayDisc Scan System. You Reviewing the Programmed Sequence Group File PlayClearing the Programmed Sequence Assigning CDs to GroupsAfter Loading CDs Reviewing a Group ProgramClearing an Entire Group Playing a GroupClearing a CD from a Group CD Care Tips Loading and Playing a Cassette Tape Using the Cassette DeckUsing Consecutive Play Dubbing Copying Cassette Tapes RecordingCopying CDs to a Cassette Tape Recording from the Tuner or Another Sound Source Tape TipsRecommended Tapes Storing Your TapesRestoring Tape Tension and Sound Quality Erasing a Cassette TapePreventing Accidental Erasure Problem Possible Cause Suggestion TroubleshootingFm Page 38 Wednesday, July 14, 1999 629 PM Care and Maintenance Tape Cleaning the TAPE- Handling PartsAmplifier SpecificationsGeneral Fm Page 43 Wednesday, July 14, 1999 629 PM RadioShack Division of Tandy Corporation Fort Worth, Texas