Summina AC-15 BT 15W Acoustic Guitar Amplifier User Manual

1. Product Overview

The Summina AC-15 BT is a portable 15W acoustic guitar amplifier designed to accurately restore guitar tone, delivering professional and powerful sound. It features a microphone input with integrated 2-band EQ and reverb for voice modification. The amplifier is Bluetooth compatible, allowing for backing track playback or music listening. Its built-in rechargeable battery provides 4-8 hours of operation after a 2-hour charge, making it ideal for on-the-go use. The compact design with an imitation wood grain shell and included strap ensures easy portability.

Figure 1: Summina AC-15 BT Acoustic Guitar Amplifier, top-down view showing the speaker grille.

2. Package Contents

Please check the package for the following items:

• 1 x Summina AC-15 BT Acoustic Guitar Amplifier
• 1 x Strap
• 1 x USB Charging Cable
• 1 x User Manual

Figure 2: Package contents and amplifier dimensions.

3. Product Layout and Controls

3.1 Rear Panel

Figure 3: Rear panel connections.

• Guitar Input: Connect your acoustic guitar here.
• MIC Input: Connect your microphone here.
• Power Input: Connect the USB charging cable for power and charging.
• Power Switch: Turns the amplifier ON/OFF.

3.2 Top Panel Controls

Figure 4: Top panel controls.

• Total Volume Knob: Adjusts the overall output volume of the amplifier.
• Guitar Volume Knob: Controls the volume level of the connected guitar.
• Reverb Knob: Adjusts the intensity of the reverb effect for the guitar channel.
• Treble Knob: Adjusts the high-frequency equalization for the microphone channel.
• Bass Knob: Adjusts the low-frequency equalization for the microphone channel.
• Microphone Volume Knob: Controls the volume level of the connected microphone.
• BT Switch: Activates/deactivates Bluetooth connectivity.
• Power Display: Indicates the current battery level.

4. Setup

4.1 Initial Charging

1. Before first use, fully charge the amplifier.
2. Connect the provided USB charging cable to the Power Input port on the rear panel.
3. Connect the other end of the USB cable to a suitable USB power adapter (not included) or a computer USB port.
4. The Power Display will indicate charging status. A full charge typically takes 2 hours.

4.2 Attaching the Strap

Attach the included strap to the strap attachment points on the sides of the amplifier for easy portability.

5. Operation

5.1 Powering On/Off

Press the Power Switch on the rear panel to turn the amplifier ON or OFF.

5.2 Connecting a Guitar

1. Ensure the amplifier is powered on.
2. Connect your acoustic guitar to the Guitar Input jack on the rear panel.
3. Adjust the Guitar Volume Knob and Total Volume Knob to your desired levels.
4. Use the Reverb Knob to add reverb effect to your guitar sound.

5.3 Connecting a Microphone

1. Ensure the amplifier is powered on.
2. Connect your microphone to the MIC Input jack on the rear panel.
3. Adjust the Microphone Volume Knob and Total Volume Knob to your desired levels.
4. Use the Treble Knob and Bass Knob to adjust the microphone's tone.

5.4 Bluetooth Connectivity

1. Turn on the amplifier.
2. Slide the BT Switch to activate Bluetooth mode. The amplifier will enter pairing mode.
3. On your Bluetooth device (smartphone, tablet, laptop), search for available devices and select "AC-15 BT".
4. Once paired, you can play backing music or other audio through the amplifier.
5. Adjust the Total Volume Knob to control the Bluetooth audio level.

6. Maintenance

• Keep the amplifier clean by wiping it with a soft, dry cloth. Do not use liquid cleaners or solvents.
• Avoid exposing the amplifier to extreme temperatures, humidity, or direct sunlight.
• Store the amplifier in a dry, cool place when not in use.
• Do not attempt to disassemble or repair the unit yourself. Refer to qualified service personnel.

7. Troubleshooting

8. Specifications

9. Warranty and Support

For warranty information or technical support, please refer to the retailer where you purchased this product or contact Summina customer service directly. Keep your proof of purchase for any warranty claims.