Why is the location of the various musical instruments not well defined on my Panasonic SC-AK78 Stereo System?
If the location of musical instruments is not well defined on your Panasonic Stereo System, the (+) and (–) connections to one of the speakers may be reversed. Connect the speaker cords correctly.
What to do if there is no sound when playing a source on my Panasonic SC-AK78?
If there is no sound when playing a source on your Panasonic Stereo System, it may be due to the speaker wires being shorted. To resolve this, switch the system to standby mode, then reconnect the speaker cords ensuring they are not shorted. After doing this, switch the power back on.
Why does “ –– : –– ” appear on the display of my Panasonic SC-AK78 Stereo System?
If “ –– : –– ” appears on the display of your Panasonic Stereo System, this usually means one of two things: either you've just plugged in the power cord for the first time, or there was a recent power failure. In either case, you will need to set the time on your system.
What to do if the batteries are run-down on my Panasonic SC-AK78?
If the batteries in your Panasonic Stereo System are run-down, replace them with new ones.
What does “ERROR” message mean on my Panasonic SC-AK78?
If an “ERROR” message appears on the display of your Panasonic Stereo System, it indicates that an incorrect operation has been performed. Refer to the operating instructions to ensure you are using the unit correctly.
What to do if the disc is dirty on my Panasonic Stereo System?
If the disc is dirty, wipe it with a soft cloth to resolve the issue with your Panasonic Stereo System.
Why is the sound low, intermittent, poor quality, noisy, scratchy, or unsteady on my Panasonic SC-AK78?
If the sound from your Panasonic Stereo System is low, intermittent, poor quality, noisy, scratchy, or unsteady, the heads may be dirty. Clean the heads.
Why doesn't the deck enter the recording mode on my Panasonic SC-AK78?
If the deck on your Panasonic Stereo System does not enter recording mode, it might be because the erase-prevention tabs have been removed from the cassette. Attach tape to cover the space left by the removal of these tabs.
Why are the left and right sounds reversed when listening to the external unit on my Panasonic Stereo System?
If the left and right sounds are reversed when listening to an external unit with your Panasonic Stereo System, the connections to the external unit are reversed. Connect the external unit’s cord correctly.
What to do if my Panasonic SC-AK78 Stereo System doesn't play nonstandard disc?
If your Panasonic Stereo System isn't playing the disc, it might be a nonstandard disc. Replace it with a different one.
Amplifier Section| front speaker power output 55 Hz–120 Hz | 100 W per channel (6Ω) |
|---|---|
| front speaker power output 120 Hz–4 kHz | 30 W per channel (6Ω) |
| front speaker power output 4 kHz–15 kHz | 30 W per channel (6Ω) |
| total tri-amp power | 160 W per channel |
| total power output | 400 W |
| input sensitivity AUX 1, AUX 2 | 250 mV |
| input impedance AUX 1, AUX 2 | 10 kΩ |
FM Tuner Section| frequency range 200 kHz step | 87.9 – 107.9 MHz |
|---|---|
| frequency range 100 kHz step | 87.5 – 108.0 MHz |
| sensitivity | 1.8 µV (IHF) |
| S/N 26 dB | 1.5 µV |
| antenna terminal(s) | 75Ω (unbalanced) |
AM Tuner Section| frequency range | 520 – 1710 kHz (10 kHz step) |
|---|---|
| sensitivity S/N 20 dB | 500 µV/m |
Cassette Deck Section| track system | 4 track, 2 channel |
|---|---|
| record/playback head | Solid permalloy head |
| erasure head | Double gap ferrite head |
| motor | DC servo motor |
| recording system | AC bias 100 kHz |
| erasing system | AC erase 100 kHz |
| tape speed | 4.8 cm/s (1[7]/8 ips) |
| overall frequency response NORMAL (TYPE I) | 35 Hz – 14 kHz |
| overall frequency response HIGH (TYPE II) | 35 Hz – 14 kHz |
| S/N | 50 dB (A weight) |
| wow and flutter | 0.18% (WRMS) |
| fast forward and rewind times | Approx. 120 seconds with C-60 cassette tape |
CD Section| sampling frequency | 44.1 kHz |
|---|---|
| decoding | 16 bit linear |
| frequency response | 20 Hz – 20 kHz (+1, –2 dB) |
| wow and flutter | Below measurable limit |
| digital filter | 8 fs |
| D/A converter | MASH (1 bit DAC) |
Speaker Section| front speakers type | 4 way speaker system |
|---|---|
| super woofer | 17 cm (6[11]/16˝) cone type |
| woofer | 12 cm (4[23]/32˝) cone type, 10 cm (4˝ ) cone type |
| tweeter | 6 cm (2[3]/8˝) ring shaped dome type, 6 cm (2[3]/8˝ ) cone type |
| super tweeter | Piezo type |
| front speakers impedance HIGH | 6Ω |
| front speakers impedance MID | 6Ω |
| front speakers impedance LOW | 6Ω |
| front speakers input power HIGH | 60W (Music) |
| front speakers input power MID | 60W (Music) |
| front speakers input power LOW | 200 W (Music) |
| front speakers output sound pressure level | 87 dB/W (1.0 m) |
| front speakers cross over frequency | 150 Hz, 3.5 kHz |
| front speakers frequency range | 40 Hz – 50 kHz (–16 dB) |
| front speakers dimensions | 250x348x292 mm (9[27]/32˝x13[11]/16˝ x11[1]/2˝) |
| front speakers weight | 5.6 (12.3 lb.) |
| surround speakers type | 1 way, 1 speaker |
| full range | 8 cm (3[1]/8˝ ) cone type |
| surround speakers impedance | 8Ω |
| surround speakers input power | 60 W (Music) |
| surround speakers output sound pressure level | 84 dB/W (1.0 m) |
| surround speakers frequency range | 120 Hz – 20 kHz (–16 dB) |
| surround speakers dimensions | 170x106x118 mm (6[11]/16˝x4[3]/16˝x4[21]/32˝ ) |
| surround speakers weight | 0.9 (2.0 lb.) |
| center speaker type | 2 way, 2 speaker |
| center speaker impedance | 8Ω |
| center speaker input power | 120 W (Music) |
| center speaker output sound pressure level | 85 dB/W (1.0 m) |
| center speaker cross over frequency | 4 kHz |
| center speaker frequency range | 75 Hz – 22 kHz (–16 dB) |
| center speaker dimensions | 250x121x147 mm (9[27]/32˝x4[3]/4˝x5[25]/32˝) |
| center speaker weight | 1.6 (3.5 lb.) |
General| power supply | AC 120 V, 60 Hz |
|---|---|
| power consumption | 230 W |
| standby power consumption normal mode | 13.5 W |
| standby power consumption eco mode | 0.25 W |
| dimensions | 270x330x339 mm (10[5]/8˝ x13˝ x13[11]/32˝) |
| weight | 9.2 (20.2 lb.) |
Lists items included with the stereo system for initial setup and use.
Safety and operational guidelines to prevent damage and ensure proper use.
Instructions on battery installation, usage, and operation of the remote control.
Guidance on positioning front, center, and surround speakers for optimal sound.
Steps for connecting antennas, speakers, and power for basic system setup.
Identification and function of buttons and controls on the main unit's front panel.
How to disable the product demonstration mode to save power.
Information on reducing standby power consumption for energy efficiency.
Procedure for setting the system's clock for accurate time display and timer functions.
Explanation of the automatic shut-off feature to save power when idle.
Guide to saving favorite radio stations for quick access using manual or auto methods.
Steps for tuning into FM and AM radio stations, including auto-tuning.
Instructions on loading, playing, and handling CDs for optimal performance.
How to play multiple CDs in order, including playback controls and disc progression.
Guide to playing tracks or discs in a randomized sequence for varied listening.
How to set the system to repeat a single track, disc, or all loaded discs.
Method to select and play a specific track or disc directly by its number.
Instructions for creating a custom playback sequence by programming specific tracks.
Using the CD Manager to select specific tracks or discs for playback or recording.
Steps for playing cassette tapes, including tape type selection and reverse modes.
Preparations and tape type compatibility for recording on Deck 2.
Guide to recording radio programs onto cassette tapes, including noise reduction.
How to record audio from CDs onto cassette tapes sequentially or by programmed tracks.
Recording specific tracks or discs from CDs using the CD Manager function.
Process for copying audio from a tape in Deck 1 to a tape in Deck 2.
How to activate and adjust the super woofer for enhanced bass response.
Selecting preset sound modes like HEAVY, CLEAR, DISCO, LIVE, HALL for different audio experiences.
Adjusting specific frequency ranges (bass, midrange, treble) for custom sound profiles.
Utilizing the AI EQ for subtle sound adjustments and creating unique sound effects.
Fine-tuning amplifier levels for low, mid, and high frequencies for personalized sound.
Explains different surround sound modes (6CH DISCRETE INPUT, DOLBY PRO LOGIC, SUPER SURROUND, SIMULATED STEREO) and their features.
Adds a 5ch surround effect to normal stereo sources for enhanced immersion.
Adds stereo effect to monaural sources for a wider soundstage.
Simulates surround sound from front speakers, making audio appear to come from behind.
Creates the sensation of multiple surround speakers for an immersive audio experience.
Enhances center channel audio, making dialogue clearer, especially when the center speaker is near the TV.
Adds surround effects to simulate multiple speakers in the room for a cinema-like feel.
Adjusts sound positioning based on the listener's location for optimal listening.
Setting the system to play music or audio from a specific time.
Setting the system to record radio or external sources onto tape at a scheduled time.
Managing and checking the status of active play or record timers.
Setting the system to automatically turn off after a specified period for listening while falling asleep.
Connecting and playing audio from external sources like CD players or other audio devices.
Instructions for connecting and using headphones with the system.
Describes useful features like display switching and volume muting.
Guidelines for handling, cleaning, and storing CDs to prevent damage.
Advice on selecting, handling, and storing cassette tapes for reliable performance.
A comprehensive list of common problems, their causes, and suggested solutions.
Instructions on cleaning the unit and its components for optimal sound quality.
Technical details about the amplifier's power output, impedance, and input specifications.
Technical specifications related to the CD player, including sampling frequency and response.
Details on the different types of speakers, their dimensions, impedance, and power handling.
Specifications for the FM tuner, including frequency range and sensitivity.
Specifications for the AM tuner, including frequency range and sensitivity.
Technical details for the cassette deck, such as track system, heads, and tape speed.
General specifications including power supply, consumption, and dimensions.
Information on how to obtain service and support for the product.
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