ZD3 - Receiver Fosi Audio - Free user manual and instructions
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| Product Type | Stereo Receiver |
| Model | ZD3 |
| Brand | Fosi Audio |
| Dimensions | 200 x 100 x 40 mm |
| Weight | 0.5 kg |
| Power Supply | DC 12V, 2A |
| Output Power | 2 x 50W RMS (4Ω) |
| Frequency Response | 20 Hz - 20 kHz ±0.5 dB |
| Bluetooth Version | 5.0 |
| Audio Inputs | USB, AUX (3.5mm), Bluetooth |
| Audio Outputs | Speaker terminals (binding posts) |
| Supported Audio Formats | MP3, WMA, WAV, FLAC |
| Maximum USB Storage | 32 GB (FAT32) |
| Remote Control | Included (IR) |
| Material | Aluminum alloy chassis |
| Color | Black / Silver |
| Operating Temperature | 0°C - 35°C |
| Certifications | CE, FCC, RoHS |
| Safety Features | Overheat, overcurrent, short circuit protection |
| Cleaning Instructions | Wipe with a dry soft cloth; avoid liquids |
| Repairability | User-replaceable fuse; contact support for other parts |
Frequently Asked Questions - ZD3 Fosi Audio
How do I connect speakers to the ZD3?
Use bare wire or banana plugs. Connect the positive (+) terminal on the receiver to the positive terminal on the speaker, and negative (-) to negative. Ensure the receiver is off when connecting.
Can I use the ZD3 with a subwoofer?
The ZD3 does not have a dedicated subwoofer output. However, you can connect a powered subwoofer using the speaker-level inputs or use a line-level converter if available.
How do I pair a Bluetooth device?
Press the Bluetooth button on the front panel or remote. The display will show 'BT' and start flashing. On your phone, select 'Fosi Audio ZD3' from the Bluetooth list. Once connected, the display stops flashing.
What is the maximum USB drive capacity supported?
The ZD3 supports USB flash drives up to 32 GB formatted in FAT32. Drives formatted in NTFS or exFAT are not supported.
Why is there no sound from the speakers?
Check that the receiver is powered on and the volume is not muted. Verify speaker wires are securely connected and the correct input source is selected. Also ensure the audio source is playing.
How do I perform a factory reset?
With the unit on, press and hold the 'Source' button for 5 seconds. The display will show 'RESET' and the unit will restart. All settings will return to default.
Can I use the ZD3 with a TV?
Yes, connect the TV's audio output (headphone jack or RCA) to the AUX input of the ZD3 using a suitable cable. Note that the ZD3 does not have HDMI inputs.
How do I clean the receiver?
Unplug the device. Use a soft, dry cloth to gently wipe the exterior. Do not use any liquids or cleaning chemicals, as they may damage the electronics.
What is the output power at 8 ohms?
The ZD3 outputs approximately 2 x 25W RMS into 8 ohm speakers.
Does the ZD3 have a built-in FM tuner?
No, the ZD3 does not include an FM tuner. It supports audio from Bluetooth, USB, and AUX sources only.
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USER MANUAL ZD3 Fosi Audio
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Product information
Brand : Fosi Audio
Model : ZD3
Category : Receiver