Fosi Audio TB10A 2 Channel Stereo Audio Amplifier Receiver User Manual

Package Contents

• TB10A amplifier x1
• 24V power adapter x1
• AC cord x1
• User manual x1

Product Overview

The Fosi Audio TB10A is a compact and powerful 2-channel stereo audio amplifier receiver designed for home and office use. It is capable of driving 200 watts (8 ohms) and 300 watts (4 ohms) speakers, providing high-quality audio output with minimal distortion.

Getting Started

Connecting the Amplifier to Your Audio System

1. Place the TB10A amplifier on a flat surface near your audio system, ensuring proper ventilation.
2. Connect your audio source (e.g., CD player, smartphone, or computer) to the amplifier using an RCA cable. Insert the red and white RCA connectors into the corresponding red (right channel) and white (left channel) input jacks on the back of the amplifier.
3. Connect your passive speakers to the amplifier using speaker wires. Connect the positive (+) and negative (-) terminals on the back of the amplifier to the corresponding terminals on your speakers. Make sure to match the impedance (2-8 ohms) of your speakers with the amplifier.
4. Plug the AC cord into the 24V power adapter, then plug the power adapter into the DC input jack on the back of the amplifier. Plug the other end of the AC cord into a wall outlet.
5. Turn on the amplifier by rotating the volume knob clockwise until you hear a click. Adjust the bass and treble controls to your desired sound preferences.

Troubleshooting Tips

No Sound or Low Volume

• Ensure that the amplifier is turned on and the volume knob is adjusted to an appropriate level.
• Check that all connections between the audio source, amplifier, and speakers are secure and properly connected.
• Verify that the audio source is playing and not muted.
• Try adjusting the bass and treble controls on the amplifier.
• Ensure that the impedance of your speakers matches the amplifier's specifications (2-8 ohms).

Distorted Sound or Noise

• Make sure the audio source is not too close to the amplifier, as this may cause interference.
• Check for any loose or damaged cables and replace them if necessary.
• Try lowering the volume on your audio source or amplifier.
• Ensure that the impedance of your speakers matches the amplifier's specifications (2-8 ohms).

Amplifier Overheating

• Make sure the amplifier is placed on a flat surface with proper ventilation and away from direct sunlight or heat sources.
• Check that the impedance of your speakers matches the amplifier's specifications (2-8 ohms).
• Turn off the amplifier and let it cool down before using it again. If the problem persists, contact Fosi Audio customer support.

Frequently Asked Questions

Can I use the TB10A amplifier with active speakers?

No, the TB10A amplifier is designed to work with passive speakers only. Active speakers have their own built-in amplifiers and should not be connected to the TB10A.

What is the maximum power output of the TB10A amplifier?

The TB10A amplifier has a maximum power output of 100 watts per channel (4 ohms, 20 Hz - 20 kHz, 0.04% THD).

Can I use the TB10A amplifier with a subwoofer?

The TB10A amplifier is a 2.0 channel stereo amplifier and does not have a dedicated subwoofer output. If you want to use a subwoofer with your audio system, consider using a separate subwoofer amplifier or a 2.1 channel amplifier like the Fosi Audio BT30D.

Does the TB10A amplifier have Bluetooth connectivity?

No, the TB10A amplifier does not have built-in Bluetooth connectivity. If you need Bluetooth connectivity, consider the Fosi Audio BT10A or BT20A amplifiers.

What is the warranty period for the TB10A amplifier?

The TB10A amplifier comes with an 18-month global warranty and 24-hour quick customer service.

Q: Will I be able to turn up the volume using my TV controller or will I need to adjust the volume manually?
A: If you use the TV variable output feed to the amp, you can control the volume using the TV tuner. Just set the amp to the desired level (and leave it there) and you are good to go.

Q: I want to drive 2 transducers, each 90 watts and 2 ohm, one on the L channel and one on the right. Will it work?
A: One can potentially use the two transducers, but they would have to be connected in series with each other. That would present an equivalent resistance seen by the Bluetooth audio amplifier as four ohms. Also, this Bluetooth audio amplifier is designed to deliver up to 200 watts RMS audio power at four ohms or 100 watts RMS audio power at eight ohms. So just place any potential desired electrical loads in series or parallel to give one at least four ohms or eight ohms, the desired potential resistance at four ohms with up to 200 watts RMS audio power at four ohms resistance or up to 100 watts RMS audio power at eight ohms resistance.

Q: My subwoofer connected to my receiver will still work?
A: You're using this and a receiver? The receiver has its own amp built-in. If that amp is dead and you're just using the preamp section of your receiver, it would depend on whether or not the sub is being powered by the same amp or if it's just using a separate powered sub output that just sends a low powered signal to the amp in the sub. Is it working from the receiver now? If so, it will probably continue to work.

Q: Is this amp stable with a 2 ohm load and if so what is the power output?
A: The Chinese manufacturers of this device have given a functional level of impedance as 2 - 8 ohms. The power adapter and/or the amplifier may get overheated because of heavy incoming current. Besides, the volume may be reduced with 2 ohm speakers. I am using 6 ohm Sony speakers without any issue.

Q: Is this device suitable for outdoor applications?
A: This device is not designed specifically for outdoor use, but it can be used outdoors as long as it is protected from moisture and extreme temperatures.

Q: I need to drive a total of 4 speakers. 2 left and 2 right. Each speaker is 4 ohms. Will this unit handle that?
A: Yes, this unit can handle up to two pairs of 4-ohm speakers connected in parallel, but keep in mind that the power output will be divided between the speakers.

Q: Are you able to turn off the bass to zero? (for listening to something like an audiobook or podcast)
A: Yes, you can adjust the bass and treble controls to zero for listening to audiobooks or podcasts.

Q: Can this be used to drive two subwoofers (the right input feeding the right sub, and the left input feeding the left sub)?
A: No, this amplifier has no subwoofer function. You can choose the M03 subwoofer amplifier instead.

Q: Can I connect my Pyramid preamp to this amp?
A: Yes, you can connect your Pyramid preamp to this amp as long as it has RCA line level output.

Q: Can this be used to gain a little volume with active/powered speakers, or is it too powerful?
A: No, this unit accepts a low-level signal and amplifies it. Active/powered speakers are already amplified and are incompatible with this unit.

Q: Is it bridgeable? If not, which model could?
A: No, this model is not bridgeable. You can order the TDA7498E mono amplifier instead.