Fosi Audio BT30D PRO User manual

BT30D PRO
BT30D PRO Bluetooth Power
Amplier User’s Guide

Product Overview
Volume
Control
Bass
Control
Treble
Control
Subwoofer
Frequency Control
Power
Switch
Subwoofer
Volume Control
Input Mode
Indicator
Antenna
Interface
PRE OUT
Power In
Passive
Subwoofer Output
Passive
Speakers Output
RCA Input
Bluetooth
Antenna

Fosi Audio BT30D PRO is a HiFi Bluetooth 5.0 power amplifier
that features SUB volume / Frequency control, Bass / Treble
control. Support Bluetooth or RCA input, suitable for most pas-
sive speakers, passive / powered subwoofer. Adopt TPA3255
high-performance chips to output 680W stably, low distortion to
show ultra-high-definition sound quality. The perfect solution to
meet all your audio needs! Let's join the audiophile’s music
journey with Fosi Audio BT30D PRO!
Audio Input:
Output Interfaces:
Output:
Power Amplifier Chip:
DC Input Range:
THD:
SNR:
Frequency Range:
Input Sensitivity:
Terminating Impedance:
MAX Power Output:
Bluetooth Transmission
Distance:
Bluetooth / RCA
TPA3255
DC 12-36V
≤ 0.04%
≥ 108dB
20Hz - 20kHz (±1dB)
700mV
2-8Ω
165W(@4Ω) x 2+350W(@2Ω)
Up to 50 Ft (Without obstacle)
3.5MM full-range output,
Speaker's / Subwoofer output
Passive Speakers / Subwoofer
+Active Speakers / Subwoofer

Note:
Fosi Audio BT30D PRO ×1
Bluetooth Antenna ×1
User Manual ×1
Power Adapter ×1
Connect the power adapter to the socket and the
BT30D PRO. Please make sure the green LED
light on the power adapter stays on.
1
2Connect the active (powered) speakers to the
BT30D PRO.
3Connect passive speakers to the BT30D PRO
using banana plugs or bare wire.Then turn on the
power switch.
1Adjust the volume control, SUB volume/Frequency
control, Bass /Treble control, then enjoy it!
Make sure that all the cables are completely
pushed into the device.
RCA line input: Use an RCA cable to connect the
BT30D PRO and your device. The input mode
indicator light will turn red after a successful
connection.
1
2Bluetooth input: Turn on the Bluetooth on your
device, then select "Fosi Audio BT30D PRO" for
pairing, the input mode indicator light will turn blue
after a successful connection. Once Bluetooth is
connected, the RCA input will be interrupted. If you
want to use the RCA input again, just disconnect
the Bluetooth.

Try to use other Bluetooth devices. Weak or unstable Blue-
tooth signal will cause this problem, try to close your device
to the BT30D PRO.
Please check the indicator light on the front panel of the
amplifier and the power supply are on.
If the indicator light is on, please check if the volume knob is
at the minimum state, if it is, please turn up the volume.
Make sure that BT30D PRO is in the play mode you want.
Try another RCA cable and make sure the audio cable is
connected correctly.
Please unplug the RCA cable from the amplifier, and then
turn it on to have a try.
Please change the audio cable and audio source to
have a try.
Did you set the "treble" volume to the top? Please volume
down the "Treble" volume.
The gain of BT30D PRO is larger than other model, you can
volume down the "Treble" sound. Some speakers are very
sensitive so that the white noise will be obvious, it’s normal
that BT30D PRO has some noise when you turn up the
“Treble” volume.
Make sure that all the cables are completely pushed into the
device, incompletely connection will cause this issue.
Please keep this device away from other electronic devices.

Note: Make sure that all the cables are completely
pushed into the device.
Note: Bluetooth input mode (the input mode indicator
light will turn blue). RCA input mode (the input
mode indicator light will turn red).Once Bluetooth is
connected, the RCA input will be interrupted.
Please check if the audio source is paused.
Make sure that BT30D PRO is on and the LED light on the
power adapter is green.
Make sure that BT30D PRO is not paired with other devices.
Make sure that the distance between your device and BT30D
PRO is not too long, close your device to BT30D PRO to
have a try.
Make sure there are no obstacles between your device and
BT30D PRO, obstacles will affect the Bluetooth operation
distance.
Please try to change another Bluetooth audio source to test.
Please replug the power supply, move the amplifier to anoth-
er room and test it again.
Restart the BT30D PRO and then try to connect again, try to
use another brand of mobile phone.
Please try to change the sound source, cables and
speakers /subwoofer.
Restart the BT30D PRO and your device, then try
to connect again.
My Bluetooth device can’t pair with
BT30D PRO?

Please test whether the Bluetooth and RCA input have
the same problem first.
If the two modes have the same problem, swap the
speaker cables of the left and right channels, or change
another speaker, and then test whether this channel still
does not work.
If only RCA or Bluetooth mode does not work, change
the audio source, change the RCA cable and test again,
and make sure that all the cables are completely pushed
into the device.
Make sure that the LED light on the power adapter is on.
If it does not light up: unplug the power adapter from the
BT30D PRO, plug the power adapter directly into the AC
power source, and see if the LED will light up. If it still
does not light up, it may be a problem with the power
adapter. Please contact us to replace the power adapter.
Is there any other DC12-36V power adapter at home?
You can use the camera or router's power adapter to
connect to the BT30D PRO, test to see if the BT30D
PRO can be turned on.
If your turntable has a built-in phono preamp, you can
directly connect the BT30D PRO to your turntable with
RCA cable.
If your turntable does not have a built-in phono preamp,
you need to add a phono preamp to the turntable and
BT30D PRO, similar to our BOX X2.

SUB freq is to adjust the output frequency of passive
subwoofer, the adjustment range is 0-300Hz.
Yes.
Yes, you can do it. You don't need to connect all the outputs.
If the item will not be used for a long time, please
unplug the power plug to prevent the item from being
burnt due to lightning strike.
Make sure all the cables are fully connected.
Adjust the treble and bass control of the power amplifier to
achieve the right tone.
Please try to change the sound source and cables to test.
No. BT30D PRO does not support Dolby, aptX, aptX HD
and aptX Low Latency.
It can be connected all the time and it is safe without
power consumption.
Can the BT30D PRO be used as a 2.0
channel power amplifier? Can it be used
without connecting the subwoofer?
Do I have to connect all the outputs of
BT30D PRO? Can I only connect one speak-
er? Or just use it as a subwoofer preamp?
Does the BT30D PRO support Bluetooth
aptX and Low Latency?

Make sure that all the cables are completely
pushed into the device.
Yes, it works.
Yes, the wide voltage AC 110v-240V for power input can
be used in any country. You only need to match the
power cord adapter of the corresponding country.
Try to reduce the sound of the sound source.
Try to change the audio source to test.
Reduce the volume of the treble bass amplifier.
Ensure that the positive and negative poles of the
speaker output do not touch together. Some relatively
large banana plugs are easy to touch together and
cause a short circuit.
Try to change a Bluetooth device.
BT30D PRO is suitable for most home audio-visual
systems, it can drive 20-200 watts, 2-8 ohms speakers.
Ensure that there is no interference from other electronic
equipment between the BT30D PRO and the audio source.
Put the sound source close to the BT30D PRO.
Replug the power adapter.
What speakers are suitable for the
BT30D PRO?
Can I take the BT30D PRO to other
countries?
PRO

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.
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Fosi Audio Product’s User Manual