MadBoy BOOST-102 Digital Karaoke Mixing Amplifier Owner’s Manual

BOOST-102
DIGITAL KARAOKE MIXING AMPLIFIER
OWNER’S MANUAL

Safety Instructions

Warning!
To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.

1. Read instructions: All safety and operating instructions should be read before installation.

2. Keep instructions: Safety and operating instruction should be retained for future reference.

3. Heed warnings: Warnings on the apparatus and in the operating instruction should be adhered to.

4. Follow instructions: All operating instructions should be followed.

5. Accessories: Only use accessories specified by the manufacturer.

6. Water and moisture: Do not use this apparatus near water.

7. Ventilation: Do not block any ventilation openings.

8. Heat: Do not install near heat sources such as radiators or other apparatus that produces heat.

9. Protect power cord: Power cord should be placed so that it is not likely to be walked on or pinched by items placed upon it. Do not use the apparatus if power cord is damaged.

10. Cleaning: Unplug power cord before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning.

11. Nonuse periods: Unplug the power cord if apparatus is left unused for a long period of time.

12. Objects and liquids: Care should be taken so that object do not fall and liquids are not spilled into the enclosure through the openings.

13. Damage requiring service: The apparatus should be serviced by qualified service personnel when:
    A. Objects has fallen inside enclosure.
    B. The apparatus has exposed to rain or moisture.
    C. The apparatus has been dropped or enclosure is damaged.
    D. The apparatus do not operate normally.

14.  Servicing: Refer all servicing to the qualified service personnel.

15. Warranty: Warranty service should be done by qualified service personnel authorized by Midbody Audio International Oy. Warranty is invalidated if a warranty seal has been altered, removed or defaced or inadequate repair work performed by end user or any non-authorized repair center.

Getting Started

Features

• High Performance 24/56-bit DSP reverb engine with two effect types.
• Digital Class-D amplifier with 2 X 72 W (4 Ω) or 2 X 36 W (8 Ω) continuous output power.
• Maximum peak output power 2 X 144 W.
• Digital Key Control ±5 semitones with LED indicators.
• 2-way binding post outputs for connecting passive speakers.
• Digital To slink input and output for connecting to Smart TV and amplifier.
• Analog RCA input for connecting DVD / CD player or tablet.
• Input selection switch for selecting the audio source.
• Analog RCA output for connecting active speakers or amplifier.
• Subwoofer output for connecting active subwoofer.
• Two microphone inputs with individual volume, 3-band equalizer and effect level controls.
• Volume control and 3-band equalizer for music.

Connectors
Inputs:

• Two microphone channels
  • Balanced 1/4” TRS jacks in the front panel
  • Balanced XLR connectors in the back panel
• Two audio inputs
  • Stereo RCA
  • Digital optical To slink (S/PDIF, PCM)

Outputs:

• Two-way binding post outputs for passive speakers (minimum impedance 4 Ω)
• Three audio outputs
  • Digital optical To slink (S/PDIF, PCM)
  • Stereo RCA
  • Mono RCA (Subwoofer)

What’s in the Box

• Boost-102 (1)
• Power cable (1)
• Owner’s manual (1)

Front and Back Panel

1. POWER SWITCH: Press the switch to turn the power on or off.

2. MUSIC VOLUME: For adjusting the volume of the music.

3. MUSIC EQUALIZER: Use these to boost or cut the frequencies of the music.

4. INPUT SELECTION: Press to select the input source (LINE / OPT).

5. KEY CONTROL: For setting the key of the music:
   Press b button to decrease the key by one semitone.
   Press #button to reset the key back to normal.
   Press #button to increase the key by one semitone.

6. MICROPHONE VOLUME: For adjusting the volume of the microphone.

7. MICROPHONE EQUALIZER: Use these to boost or cut the frequencies of the microphone.

8. MICROPHONE EFFECT: For adjusting the effect level of the microphone. Effect type can be changed by keeping key natural button pressed when switching the power on.

9. MICROPHONE INPUT: Balanced 1/4″ TRS jacks for microphones. Balanced or unbalanced microphone cable can be used.

1. BALANCED MIC INPUTS: Use these inputs with balanced XLR microphone cables.
2. LINE IN: For connecting analog audio source using RCA cable. For example, DVD/CD player, tablet or PC.
3. LINE OUT: For connecting active speakers or amplifier with RCA cable.
4. SUBWOOFER OUT: For connecting active subwoofer with RCA cable. Can be also used as mono output for active speaker.
5. OPTICAL IN: For connecting digital audio source with optical To slink cable. Audio source can be for example Smart-TV, Android TV Box or DVD/CD player. Supports 2-channel PCM audio (32-96 kHz).
6. OPTICAL OUT: For connecting amplifier or active speakers with To slink cable. Supports 2-channel PCM audio (48 kHz).
7. SPEAKER TERMINAL: For connecting passive speakers (min. impedance 4 Ω).
8. POWER INPUT: Insert the power cable here.

Getting Connected

Basic Operation Instructions

1. Connect the audio source, passive speakers and power cable to Boost-102.
2. Turn on your audio source and Boost-102.
3. Select right input channel from Boost-102.
4. Adjust music and microphone volumes from Boost-102.

Connecting the Audio Source
You can connect the analog audio source to LINE IN using RCA cable if your audio source have RCA output. In case your audio source have 1/8″ headphone connector, you can use 1/8″ TRS plug – RCA cable.
The digital connection can be made using optical To slink cable. Optical connection is less susceptible to noise and less likely cause ground loop problems in your audio system.
The audio source must be set to output audio in PCM format.
Connecting the Audio System
You can connect audio to your home theater or sound bar From LINE OUT using analog RCA cable or from OPTICAL OUT using optical To slink cable.
Subwoofer can be connected from SUBWOOFER OUT using RCA cable. Frequency range is not limited, so it can be also used to connect the monitor speaker.

Connecting Passive Speakers
Before connecting speakers, make sure that the power is turned off from Boost-102. Connection guide:

• You can use speaker wire or speaker wire with banana plugs.
• Follow the speaker polarity (+/-) when connecting speakers.
• Minimum speaker impedance 4 .Ω

Connecting Microphones
The microphone can be connected to the front panel using balanced or unbalanced 1/4″ microphone plug cable or to the back panel using balanced XLR cable. Two microphone inputs can be used simultaneously. You can improve signal-to-noise ratio by using balanced microphone cables. Balanced microphone cables are less susceptible to the external noise caused by electromagnetic interference.

Connection Examples

1. Connecting the SMART-TV and Passive Speakers
2. Connecting the APPLE-TV and Passive Speakers

Microphone Cables and Connectors

Cable assemblies:

Technical Specifications

Microphone input
Maximum input level:| -12 dBV (unbalanced/balanced)
Input sensitivity:| -45 dBV (unbalanced/balanced)
Input impedance:| 1.2 kΩ (unbalanced), 2.4 kΩ (balanced)
ADC:| 24-bit, 48 kHz, SNR 105 dB
Line input
Maximum input level:| 0 dBV
Input sensitivity:| -16 dBV
Input impedance:| 10 kΩ
ADC:| 24-bit, 48 kHz, SNR 99 dB
Line output
Maximum output level:| 3 dBV
Output impedance:| 470 Ω
DAC:| 24-bit, 48 kHz, SNR 104 dB
Optical input
Format:| 2-channel PCM, 24-bit
Sampling frequency:| 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz
Optical output
Format:| 2-channel PCM, 24-bit
Sampling frequency:| 48 kHz
Frequency response
Line in – Line out| 10 – 20 000 Hz (-2 dB, 1 kHz ref.)
Mic in – Line out| 70 – 20 000 Hz (-2 dB, 1 kHz ref.)
Music
Vol:| -∞ – +12 dB
Bass:|  ±12 dB / 100 Hz (2nd order shelving)
Mid:| ±12 dB / 2.5 kHz (peaking)
Treble:| ±12 dB / 10 kHz (2nd order shelving)
Key control:| MadBoy ’Toner’ Key Control, ±5 semitones
Microphones
Vol:| -∞ – +24 dB
Bass:| ±12 dB / 100 Hz (2nd order shelving)
Mid:| ±12 dB / 2 kHz (peaking)
Treble:| ±12 dB / 10 kHz (2nd order shelving)
Low cut:| 60 Hz (-3 dB, Q 0.7)
Effect:| 1. Large room 2. Echo
Amplifier
Type:| Class-D
Output power:| 2 X 72 W (4 Ω), 2 X 36 W (8 Ω) Continuous
2 X 144 W (4 Ω), 2 X 72 W (8 Ω) Peak
Protection:| Short-circuit, overheating, overload and DC voltage
Power
Power input:| AC 100-240 V / 50-60 Hz
Power consumption:| <150 W
Dimensions| (W) 430 mm x (D) 186 mm x (H) 65 mm
Optional accessories| Rack Mounting Kit

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References

• Premium karaoke machines and karaoke discs | MadBoy Premium Karaoke Systems | Webshop

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