SUCA AUDIO M-504C Bluetooth Tube Amplifier Instruction Manual
- June 15, 2024
- SUCA AUDIO
Table of Contents
Thank you very much for choosing our products! Please read this manual carefully before using the product.
Front and rear panel description:
- Switch on/off / switch channel
- LED light color selection switch (middle gear is off)
- Channel indicator lamp
- 3.5 headphone output
- Bass knob
- Treble knob
- Master Volume Knob
- Bluetooth antenna base
- RCA input (red for right channel, white for left channel)
- 3.5 stereo output
- Speaker interface (red / positive, black / negative, R connected to the right speaker, L connected to the left speaker)
- Power interface (DC voltage range 15-24V)
Operation steps:
- Install the matching electronic tube into the electronic tube base according to the direction(the electronic tube is not divided into left and right, and pay attention to check whether the pin is deformed).
- Connect the passive speaker to be used to the speaker interface of this product.
- Connect the sound source to be used to the input interface of the product.
- Finally, connect the power supply (the DC voltage shall not be higher than 24V).
- Toggle the switch to start up and switch to the corresponding input channel.
- Turn the treble, bass and main volume knobs to the right to achieve the appropriate volume and sound effect.
Specification parameters
Maximum output power| *80W2 (40)| maximum output level|
2Vrms*
---|---|---|---
Treble and bass
adjustment range| -I-6dB| THD| 0.1%
working voltage| DC15-24V| SNR| –..:=96dB
Input sensitivity| 0.775V| Bluetooth version| 5.0
frequency response| 20Hz-20KHz(±3dB)| Earphone impedance
range| 16—-300Q
Maximum output
power of earphone| 130mW2 (320)| Packing weight| 1.2kg
Speaker impedance
range| 4—80| Package size| L2900240*H8Omm
FQA：
Q: all my cables are connected, but there is no sound output?
A：1.Check whether the indicator light of the machine is on. If the indicator light does not come on, toggle the switch to start the machine. After the switch is toggled, the indicator light is still not on. At this point, you can find a power supply with the same voltage output (DC15-24V) for retest. 2.If the indicator light is on, check whether the main volume knob is in the minimum state. If it is in the lowest state, rotate it to the right to normal. 3.If the above two points are normal, check whether the playback device of the input sound source is suspended, muted or the volume is at the minimum state.
Q: why is the sound distorted?
A: the input signal level may be too large. If the volume of the machine is adjusted to the maximum value and the volume of the input source is also adjusted to the maximum value, it is easy to be distorted. At this point, you only need to lower the volume of the input source or machine.
Q: why does the volume of the machine remain the same, but the sound size of different sound sources (such as CD first and then mobile phone) is different?
A: the output signal level is different for different playback devices. For example, mobile phones are usually 0.35V, while CDs are 1V. The size of natural sound is different.
Q: why does the horn make a loud current sound?
A: If you are not using the original standard power supply, please replace the power supply and test again. Many power sources in the market have a large disturbance coefficient, which will cause a large current sound.
Q: why do I not connect the sound source after I plug in the input line, and the speaker will have a great buzz?
A: when the signal line without shielding is used, there will be interference signals entering the power amplifier for amplification. It is recommended that you replace the signal line with shielding or unplug the signal line.
Q: can I change the tube directly without turning off the power?
A: No, because the machine works under high pressure, the hot plug electronic tube may burn out and damage the machine.
Q: why does Bluetooth sound get stuck?
A: when using Bluetooth to test the distance, it is normal that the sound does not get stuck or disconnected within 10 meters without any obstructions.(Note: The router will interfere with the Bluetooth signal. Don't get too close!)
Warning!
- Please do not open the machine shell. Improper operation may cause electric shock hazard.
- Please use the switching power supply of the regular manufacturer, otherwise there will be the risk of damaging the machine.
- Do not replace the electronic tube at will, otherwise it will burn your electronic tube or machine.
- Please do not operate the machine in high temperature or humid environment.