Fonestar AS-170RU Hi-Fi Amplifier User Manual

1. Introduction

Thank you for purchasing the Fonestar AS-170RU Hi-Fi Amplifier. This device is designed to provide high-fidelity stereo audio amplification, featuring a built-in USB/MP3 player, AM/FM digital tuner, and multiple audio inputs. This manual provides detailed instructions for safe installation, operation, and maintenance of your amplifier. Please read this manual thoroughly before use and retain it for future reference.

2. Safety Instructions

• Power Supply: Ensure the amplifier is connected to a power supply matching the voltage specified on the unit. Disconnect the power cord from the outlet if the unit will not be used for an extended period.
• Ventilation: Do not block ventilation openings. Ensure adequate space around the unit for proper airflow to prevent overheating.
• Water and Moisture: Do not expose the unit to rain, moisture, or dripping/splashing liquids. Do not place objects filled with liquids, such as vases, on the unit.
• Heat Sources: Keep the unit away from heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
• Cleaning: Clean only with a dry cloth. Do not use liquid cleaners or aerosol cleaners.
• Servicing: Do not attempt to service this product yourself. Refer all servicing to qualified service personnel.
• Placement: Place the unit on a stable, flat surface. Avoid placing it in direct sunlight or near strong magnetic fields.

3. Package Contents

Please check that the following items are included in your package:

• Fonestar AS-170RU Hi-Fi Amplifier
• Remote Control
• AM Antenna
• FM Antenna
• User Manual (this document)

4. Product Overview

4.1 Front Panel

The front panel provides access to essential controls and the display.

Image: Fonestar AS-170RU Front Panel. This image displays the front view of the amplifier, showing the VFD display, USB port, headphone output, input selectors, volume knob, and other control buttons.

• Power Button: Turns the amplifier on or off.
• VFD Display: Shows current input, volume level, tuner information (frequency, RDS), and USB/MP3 track details (ID3 tag).
• USB Port: For connecting USB storage devices to play MP3 files.
• Headphone Output: 6.3mm jack for connecting headphones.
• Input Selectors: Buttons for choosing audio sources (CD, DVD, VCR, AUX/Phono, USB/Tuner).
• Volume Control: Rotary knob to adjust the master volume level.
• Microphone Inputs: Two 6.3mm microphone jacks with independent volume control.
• Tone Controls: Buttons or menu options for adjusting Bass, Treble, and Balance.

4.2 Rear Panel

The rear panel contains all the necessary connections for your audio sources, speakers, and antennas.

Image: Fonestar AS-170RU Rear Panel. This image illustrates the rear connections of the amplifier, including speaker terminals (A/B), various RCA input jacks (CD, DVD, VCR, AUX/Phono), REC OUT, PRE OUT, AMP IN, and antenna connections (FM COAX, AM LOOP ANT).

• Speaker Outputs (A/B): Terminals for connecting two pairs of speakers. Supports 4-16 ohms for A or B, or 8-16 ohms for A+B.
• Audio Inputs (RCA):
  • CD Input: For connecting a CD player.
  • DVD Input: For connecting a DVD player or other audio source.
  • VCR Input: For connecting a VCR or other audio source.
  • AUX/PHONO Input: For connecting auxiliary devices or a turntable (Phono input may require a pre-amplifier if your turntable does not have one built-in).
• REC OUT: RCA output for connecting to a recording device.
• PRE OUT: RCA output for connecting to an external power amplifier.
• AMP IN: RCA input for connecting an external pre-amplifier.
• Antenna Connections:
  • FM COAX 75Ω: For connecting an FM antenna.
  • AM LOOP ANT: For connecting the supplied AM loop antenna.

4.3 Remote Control

The included remote control allows convenient operation of the amplifier from a distance.

Image: Fonestar AS-170RU Remote Control. This image shows the remote control unit with various buttons for power, input selection, volume, mute, tuner functions, USB playback controls, and tone adjustments.

• STANDBY: Power on/off.
• Input Selectors: Buttons for CD, DVD, VCR, AUX/PHONO, USB/TUNER.
• Volume Up/Down (VOL +/-): Adjusts the master volume.
• MUTE: Silences the audio output.
• AM/FM: Switches between AM and FM tuner modes.
• SCAN: Scans for radio stations.
• MEMORY: Stores radio station presets.
• USB Playback Controls: Play/Pause, Stop, Skip Track, Folder/Track navigation.
• EQ OFF / BASS / TREBLE: Access tone controls.
• RDS / ID3: Displays RDS information for radio or ID3 tag for MP3 files.

5. Setup

5.1 Connecting Speakers

1. Ensure the amplifier is turned off and unplugged from the power outlet.
2. Connect your speakers to the "SPEAKERS OUTPUT" terminals on the rear panel.
3. Match the positive (+) terminal of the amplifier (red) to the positive (+) terminal of your speaker, and the negative (-) terminal (black) to the negative (-) terminal.
4. The AS-170RU supports two groups of speakers (A and B). You can connect one pair to "SPEAKERS A" and another to "SPEAKERS B".
5. Ensure your speakers' impedance matches the amplifier's specifications: 4-16 ohms for A or B, or 8-16 ohms for A+B.

5.2 Connecting Audio Sources

Use RCA cables to connect your audio components to the corresponding input jacks on the rear panel.

• CD Player: Connect to the "CD" input.
• DVD Player: Connect to the "DVD" input.
• VCR: Connect to the "VCR" input.
• Auxiliary Device (e.g., smartphone, tablet): Connect to the "AUX/PHONO" input.
• Turntable: Connect to the "AUX/PHONO" input. If your turntable does not have a built-in pre-amplifier, you may need an external phono pre-amplifier.

5.3 Connecting Antennas

• FM Antenna: Connect the supplied FM wire antenna to the "FM COAX 75Ω" terminal. Extend the wire for optimal reception.
• AM Antenna: Connect the supplied AM loop antenna to the "AM LOOP ANT" terminals. Position the loop for best reception.

5.4 Power Connection

Once all audio and speaker connections are made, plug the amplifier's power cord into a suitable AC power outlet.

6. Operating Instructions

6.1 Basic Operation

1. Power On/Off: Press the Power button on the front panel or the STANDBY button on the remote control to turn the amplifier on or off.
2. Select Input Source: Press the desired input selector button on the front panel (CD, DVD, VCR, AUX/PHONO) or the remote control (CD, DVD, VCR, AUX/PHONO, USB/TUNER).
3. Adjust Volume: Rotate the Volume knob on the front panel or use the VOL +/- buttons on the remote control to adjust the sound level.
4. Mute: Press the MUTE button on the remote control to temporarily silence the audio. Press it again to restore sound.

6.2 USB/MP3 Playback

1. Insert a USB storage device (flash drive) into the USB port on the front panel.
2. Select "USB/TUNER" as the input source. The amplifier will automatically detect and begin playing MP3 files.
3. Use the playback controls on the remote control (Play/Pause, Stop, Skip Track, Folder/Track) to navigate and control your music.
4. The VFD display will show track information, including ID3 tags if available.
5. The amplifier supports up to 65,000 indexable folders and files, with a maximum of 8 folder levels.

6.3 AM/FM Tuner Operation

1. Select "USB/TUNER" as the input source, then press the AM/FM button on the remote control to switch between AM and FM bands.
2. Automatic Scan: Press the SCAN button on the remote control to automatically search for and store available radio stations.
3. Manual Tuning: Use the tuning buttons (usually arrow keys) on the remote control to manually adjust the frequency.
4. Preset Stations: The amplifier supports 64 presets. Use the MEMORY button to store and recall your favorite stations.
5. RDS Function: If available, press the RDS button on the remote control to display Radio Data System information (e.g., station name, program type).

6.4 Microphone Inputs

1. Connect microphones to the 6.3mm MIC 1 and MIC 2 jacks on the front panel.
2. Adjust the independent volume controls for each microphone to achieve the desired level.

6.5 Tone and Balance Control

The amplifier allows adjustment of bass, treble, and balance through its menu system or dedicated buttons on the remote control. Refer to the remote control section for specific buttons like EQ OFF, BASS, TREBLE.

7. Maintenance

• Cleaning: Disconnect the power before cleaning. Use a soft, dry cloth to wipe the exterior surfaces. Do not use abrasive cleaners, waxes, or solvents.
• Ventilation: Periodically check that the ventilation openings are clear of dust and debris.
• Storage: If storing the unit for an extended period, unplug it from the power outlet and store it in a cool, dry place, away from direct sunlight and extreme temperatures.

8. Troubleshooting

If you encounter problems with your amplifier, refer to the following table for possible solutions.

9. Specifications

• Model: AS-170RU
• Power Output: 80 + 80 W RMS at 4 Ω
• Speaker Impedance: 4-16 Ω (A or B), 8-16 Ω (A+B)
• Protection: 3 circuits (short circuits, overload, overvoltage)
• USB Player: MP3 file playback, ID3 tag support. Max 65,000 indexable folders/files, max 8 folder levels.
• Tuner: Digital AM/FM, 64 presets, RDS.
• Inputs: 2 x Microphone (6.3mm), 4 x RCA (CD, DVD, VCR, AUX/Phono), 1 x RCA (AMP IN).
• Outputs: 1 x RCA (REC OUT), 1 x RCA (PRE OUT), Headphone (6.3mm).
• Display: Blue VFD.
• Tone Control: Bass, Treble, Balance (via menu/remote).
• Dimensions: 40 x 40 x 60 cm (approx. 15.7 x 15.7 x 23.6 inches)
• Weight: 7.2 kg (approx. 15.87 lbs)

10. Warranty and Support

For warranty information and technical support, please refer to the warranty card included with your product or contact your authorized Fonestar dealer. Do not attempt to repair the unit yourself, as this may void your warranty.