Fosi Audio M04 User Manual
Product Specifications Small but mighty! Fosi Audio M04 is a 100w mono-channel class D subwoofer amplifier, with a SUB/PBTL switch you can select subwoofer bass amplifier or full frequency mono amp, can be connected to active/passive subwoofer and passive speaker. Power switch was integrated into volume control, we made it small but supply an in-wall or stand-alone subwoofer the power it needed so you can experience room-shaking low frequency impact (bass) on movie and music soundtracks.
Product Overview & Control Functions Full Frequency/ Bass Working Mode Switcher Power Indicator Bass Frequency Control Knob Power Switch & Volume Knob (works only in bass mode) DC 12V-24V Input RCA Input Passive Subwoofer/ Speaker Output Note: The upgraded version can connect to both passive and active subwoofer.
Package Contents Fosi Audio M04 *1 19V Power Adapter *1 User Manual *1 Quick Setup Step 1: Prepare M04, 19V power adapter, passive subwoofer/passive speaker, speaker wires or banana plugs; Step 2: Connect the M04 to the passive subwoofer/passive speaker via the speaker wire, you can use the bare wire or banana plugs; Step 3: Use RCA cable to connect your device to the RCA Line In of M04; Step 4: Switch PBTL/SUB switcher to SUB if you are using passive subwoofer, and PBTL if you are using passive speaker; S
Tips: How to connect the speaker wire? Method 1: Bare wire connection illustration 1 : Release the horn terminals block terminals; 2 : Insert the two ends of the speaker wire into the amplifier 3 : Tighten the horn terminals. and speaker terminal holes; Note: Please avoid the speaker wires being exposed and touching the amplifier casing, as this may cause a short circuit fault.
Troubleshooting/QA Q: All cables are connected, but no sound output? A: 1. Check if the POWER indicator is on, and turn the VOL knob clockwise to turn on the POWER if it is not. When the indicator light is still not on, you can find a laptop power and connect to test whether it is the machine fault or a power failure; 2. If the indicator light is on, check whether the VOL knob is in the minimum position. If so, turn clockwise to normal Volume; 3.
A: If you use unshielded signal lines, there will be interference signals entering the power amplifier. If you hate the sound, you are advised to use the shielded signal lines or unplug the signal lines. Q: Why does the amplifier stop working after a period of time? After a period of time off, it was working again A: Usually in this case, the amplifier is overheating protection, and the output power may have exceeded the designed power, so you can lower the volume a little and try again.
Warranty Information All Fosi Audio products have an 18-month limited warranty on parts and labor from the date of purchase. Please contact us if you have any problems. About Fosi Audio Fosi Audio designs and builds innovative audio products with all your music in mind. Great sound, simple but elegant designs, high-quality materials, and truly useful features are what Fosi Audio is about. We sincerely hope you get as much enjoyment from our products as we’ve had to create them! Our website: www.fosiaudio.
