Boston Acoustics BA 100 User Manual Download Page 6

HOW TO ADJUST SOUND

ADJUSTING CONNECTED MICROPHONES & SINGING VOICE

First, turn the entire row of knobs for the 

MIC

 and

 MUSIC 

sections at the bottom part of the front of the 

amplifier to the 12 o’clock position, then turn the 3 largest buttons, EFF VOL, MIC VOL and MUSIC VOL to 

the 7 o’clock position.

Next, plug the microphone cable into the 

MIC 

port on the amplifier, then connect the power cable and 

turn the 

POWER

 button to 

ON.

You can choose to play karaoke background music from a TV (press OPT or HDMI button with connected 

cable is Optical or HDMI), Smartphone, or Tablet via Bluetooth connection, press USB / CARD / BT button 

and turn on the phone Bluetooth settings connected to the Boston Acoustics amplifier name displayed on 

the device detection screen.

Turn the 

MUSIC VOL

 button clockwise until you reach the desired volume level.

Turn the 

MIC VOL

 button clockwise and sing along to the music until the singing is loud enough to blend 

with the music. However, to make easier to sing, we recommend adjusting the microphone to be a bit 

louder than the MUSIC. This helps singers hear themselves clearly and sing more effortlessly.

- Turn the 

EFF VOL

 knob up or down depending on you preference, but typically this knob should be 

left at the 10 or 12 o’clock position, adjusting the 

EFF VOL

 too high may lead to a hissing sound in the 

microphone. If you have a good and powerful voice, setting the knob at the 8 or 9 o’clock position should 

be enough.

DELAY:

 for slow tempo music like Bolero, turn up the Delay level so that the EQ banding is in matches 

the rhythm and accompaniment. In contrast, with fast-paced music such as Dance and Remix, you should 

reduce the level of Delay.

REPEAT:

 To make Karaoke easy to sing and vocals more soft and sweet, in addition to increasing the 

level of 

DELAY

 to create a wide resonance, you can also adjust the 

REPEAT

 setting to increase the level of 

vibration. Read the word “One” slowly and adjust so that the word is repeated about 6 times so that when 

singing with background music, there will be enough natural vibration.

BASS:

 For those with a thin, slightly soft voice when singing, you can turn the BASS up to make the sound 

warmer, and more powerful, moderately adjust to your preference with causing distortion.

TREBLE:

 For those with a deep voice, to make the singing sound more clear and bright, you can turn up 

TREBLE

, increase just enough to not cause any distortion or howling.

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