Fosi Audio M03 Subwoofer Mono Amplifier
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Fosi Audio M03 Subwoofer Mono Amplifier
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
We offer free worldwide shipping, except for certain regions such as Ukraine and Russia, where our services are currently unavailable.
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Customer Support
WhatsApp: +8613716612254
support@fosiaudio.com
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FAQ’s
If you have any questions, please refer here: FAQs
Product details
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Hi-Fi Amp with Clean Sound Quality: Fosi Audio M03 subwoofer amp adopts the Instruments TPA3255D2 chip, High Efficient Power Output Up to 200Watt, providing 150 watts RMS into 4-ohm loads or 120watts to 8-ohm loads. Great amplifier to driver any bookshelf speaker or subwoofer;
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Subwoofer amplifier and Full-Frequency Mono Amp: Switch to PBTL, it's a Full-Frequency Mono amp for driving passive speakers and powered subwoofer. Switch to SUB, it's a subwoofer amplifier for diving passive and powered subwoofers;
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Mini Compact but Powerful: Built-in low pass filter for 20-300Hz subwoofers with SUB frequency control, small simple compact design but practical and powerful;
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Home Hi-Fi amplifier: Exclusively designed for the customers who pursue HiFi sound; MAX Power Output:200Watt. Note: The package comes with a 32V/5A power supply, you need a more powerful power supply to get the MAX power output;
Specifications
| Specifications | Details |
|---|---|
| Model | M03 |
| RMS Power Output: | RMS 200watt at 4ohm, RMS 100watt at 8ohm |
| Terminating Impedance | 4-8Ω |
| Input Sensitivity | ≤ 0.2mV |
| Full Frequency Response Range | 20Hz-20KHz(± 3db) |
| Bass Frequency Range | 20-200Hz |
| THD | ≤0.03% |
| SNR | ≥ 106dB |
| DC Input Range | 24-48V |
| Power Supply | 32V 5A |
What‘s in the box？
| Item | Quantity |
|---|---|
| Fosi Audio M03 Amplifier | x 1 |
| 32V 5A Power Adaptor | x 1 |
| User’s Manual | x 1 |
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FAQs
Please read our FAQs page to find out more.
How to: Choose the right banana plug?
- Closed Screw Type. All Fosi amplifiers use standard-sized speaker terminals (4mm pins).
- Easy to wire up and solidly connect to amplifier and passive speaker.
- If they do not fit, use a little force to tighten the plugs.
- Fosi Audio Banana Plugs (Copper, Silver/Gold Plated): http://bit.ly/40Djq0U, https://bit.ly/3MkPL8t
- Please watch tutorial videos: https://youtu.be/6pYhoqDlvNw / https://youtu.be/RGvBgGAwS9k
How to Diagnose Power Supply Failure?
- The following situations may cause this issue
- Case 1: The LED on the power supply does not light up; Case 2: Amp/Preamp does not turn on; Case 3: When plugged into the Amp, both light on the amp & power supply start blinking; Case 4: Amp/Preamp make noise; Case 5: Sound shuts off by itself
- Possible solution
- Check if the power supply is illuminated when plugged into AC by itself.
Plug power supply into a different socket.
Test the adapter with a meter.
Try a different power supply (within a range of DC input).
Test the included power supply on other electrical equipment.
Please watch the tutorial video by clicking on the link provided. https://youtu.be/yCjygS03zTE
What are the differences in power outputs using the 32V and 48V power supplies?
- Using a more powerful power supply can help prevent distortion.
- Enables amplifier to drive larger, more powerful, or higher-impedance speakers.
What is a GaN?
- The GaN supply has a power output of 240W.
- Offers overload and over-temperature protection.
- The 48V 5A GaN power supply is also available on Amazon.