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TM
®
VHF Wireless Microphone System
VM-28
Operating Instructions
Thank you for purchasing this
unit. To make full and effective
use of this unit, please read this
Owner's Manual carefully
before operating it. After
reading this manual, retain this
booklet together with the
Warranty Card for future use
in case of maintenance or
troubleshooting.
Passionate about Music
www.BetterMusicBuilder.com
Page 2
VM-28 Receiver Features and Controls (Figure 1)
Better Music Builder
10
10
12
8
12
8
6
6
14
14
Channel-B
Top view
Channel-A
Signal
POWER
VM-28
16
4
16
4
VHF RECEIVER
Signal
18
2
18
2
DUAL CHANNEL
0 20
0 20
Channel-A Volume
Channel-B Volume
POWER
Channel-A
Signal
Channel-B
Signal
10
12
8
6
4
2
Channel-A Volume
0 20
14
16
18
10
12
8
6
4
2
Channel-B Volume
0 20
14
16
18
VM-28
VHF RECEIVER
DUAL CHANNEL
1 2 3 4 5
Rear view
XLR CHANNEL B OUT
TM
®
Better Music Builder
Model: VM-28
ANT-B ANT-A
CALIFORNIA, UNITED STATES OF AMERICA
COMMENTS?
E-MAIL: [email protected]
www.BetterMusicBuilder.com
ENGINEERED AND DESIGN IN U.S.A.
XLR CHANNEL A OUT
CHANNEL A & B OUT
DC 12.5-18.OV
POWER
RISK OF ELECTRIC SHOCK
ON
OFF
6 12107 8 9 11
1. Channel-A Power.
2. AF Peak indicators (Channel-A).
3. AF Peak indicators (Channel-B).
4. Channel-A AF volume adjust output jacks +/-15KHz.
5. Channel-B AF volume adjust output jacks +/-15KHz.
6. Reveicer Antenas-B.
7. Channel-B XLR balance audio output 50Hz~15KHz +/-3dB.
8. Channel-A XLR balance audio output 50Hz~15KHz +/-3dB.
9. Mixed channels (A & B) 1/4-inch unbalance audio output
connector.
10. Docking power supply with removable IEC cable 12.5-18.0 V.
11. Power switch On/Off.
12. Reveicer Antenas-A.
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VM-28 Handheld Transmitter (Figure 2)
ON
LOW BAT
OFF PWR
MUTE
9 V
ALKALINE
BATTERY
FREQUENCY:
Better Music Builder
TRANSMITTER
13
14 1615
17
13. Rugged unidirectional dynamic element.
14. Easily-accessible power switch On/Off.
15. Indicates low battery
16. Transmitter On and Mute switch.
17. Variable battery cover.
VM-28 Transmitter Features and Controls (Figure 3)
ON
MUTE
LOW BAT
OFF PWR
OFF PWR
LOW BAT
ON
Battery condition Indicator: After battery is
installed, turn the power on. The battery
condition indicator signal light should flash
once. If it does not, the battery is installed
incorrectly or it is dead. If the indicator
signal light stays on (does not flash), the
battery voltage is low and the battery
should be replaced. If this happens during
use, replace (or recharge) the battery
immediately to ensure continued operation.
MUTE
Transmitter power switch (On/Off)
3
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Handheld Transmitter Channel A (Figure 4)
9 V
ALKALINE
BATTERY
ON
MUTE
LOW BAT
OFF PWR
Make sure that you insert the battery at the right electric poles.
Handheld Transmitter Channel B (Figure 5)
9 V
ALKALINE
BATTERY
FREQUENCY:
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TRANSMITTER
9 V
ALKALINE
BATTERY
ON
MUTE
LOW BAT
OFF PWR
Make sure that you insert the battery at the right electric poles.
4
9 V
ALKALINE
BATTERY
FREQUENCY:
Better Music Builder
TRANSMITTER
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VM-28 VHF Wireless System Chart (Figure 6)
ON
MUTE
OFF PWR
LOW BAT
Channel A Handheld Transmitter
XLR CHANNEL B OUT
TM
®
Better Music Builder
Model: VM-28
ANT-B ANT-A
CALIFORNIA, UNITED STATES OF AMERICA
COMMENTS?
E-MAIL: [email protected]
www.BetterMusicBuilder.com
ENGINEERED AND DESIGN IN U.S.A.
Channel B Handheld Transmitter
XLR CHANNEL A OUT
CHANNEL A & B OUT
OFF PWR
ON
LOW BAT
MUTE
DC 12.5-18.OV
POWER
Rear View
Balance Connection
XLR
Balance Input
XLR
Balance Input
XLR
Balance Input
XLR
Balance Input
1/4"
Unbalance Input
1/4"
Unbalance Input
1/4"
Unbalance Input
Audio Mixer Amplifier or a Karaoke Unit Input terminal
120V AC Adaptor
RISK OF ELECTRIC SHOCK
ON
OFF
1/4"
Unbalance Input
Audio Cable Balance
(Figure 7)
SHIELD
HOT
COLD
3
1
SHIELD
3
COLD
HOT
1
3
2
BALANCE XLR CONNECTORS
Audio Cable Unbalance
(Figure 8)
2
TIP
1
2
SHID
COLD
HOT
UNBALANCE XLR CONNECTORS
5
SLEEVESLEEVE TIP
RING (COLD)
TIP (HOT)
SLEEVE (SHIELD)
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VM-28 Basic Karaoke Connection Diagram (Figure 9)
ON
MUTE
OFF PWR
LOW BAT
ON
MUTE
OFF PWR
LOW BAT
Channel A Handheld Transmitter Channel B Handheld Transmitter
XLR CHANNEL B OUT
TM
®
Better Music Builder
Model: VM-28
ANT-B ANT-A
CALIFORNIA, UNITED STATES OF AMERICA
COMMENTS?
E-MAIL: [email protected]
www.BetterMusicBuilder.com
ENGINEERED AND DESIGN IN U.S.A.
XLR CHANNEL A OUT
CHANNEL A & B OUT
DC 12.5-18.OV
POWER
Rear View
Unbalance Connection
DVD
MIC 1 MIC 2
DVD Karaoke Player
Audio connect to Amplifier
Video connect to
TV/Video Monitor
RISK OF ELECTRIC SHOCK
ON
OFF
Specifications
RF Carrier Frequency Range: 169.445 to 221.350 MHz
Working Range: 100 ft under typical conditions.
Audio Frequency Response: 50 to 15,000 Hz, +/-2 dB
Audio Output Level (+/-15 kHz deviation, 1 kHz tone)
1/4~inch connector (into 3 k Ohm load): -8.8 dBV (Hi Z)
1/4~inch connector (into 3 k Ohm load): -18 dBV (mix)
RF Power Output: about 30 mWatt
Battery Size: 9V rechargeable
Receiver Dimensions: 220mm(W)x40mm(H)x130mm(D)
Handheld Transmitter Dimensions: 240mm(L)x55mm(H)x30mm(W)
Net Weight: 2 lbs
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Warranty
WARRANTY
One-Year Limited Warranty for Home Use Equipment
Our one-year warranty applies to speakers, amplifiers, mixers and microphones for
home use only. It covers both parts and labors. The warranty becomes effective from
the date of your purchase for one year.
Our warranty only covers defects due to product defectiveness with free of defects in
materials or workmanship. However, our warranty does not cover defects due to
normal wears, damage in transit, improper use, abuse or failure to follow the proper
instructions for maintenance. This warranty is void in the event of unauthorized repairs,
alternations, modifications and removing of the product label.
Please also note that our warranty does not cover any shipping cost for the return of
defective products to us for inspection, repair and maintenance. Our warranty for
Better Music Builder products can only be executed in North America.
NOTE
Our warranty does not cover the battery for wireless microphone products.
90-Day Limited Warranty for Public and Commercial Use Equipment
Our 90-day warranty applies to speakers, amplifiers, mixers and microphones for
both public and commercial use such as restaurant, coffee shop, KTV nightclub,
church and school, etc. It covers both parts and labors. The warranty becomes
effective from the date of your purchase for 90 days.
To Register Your Warranty
Please fill out the warranty card that came with your unit, download or submit online
warranty form. However, we need the invoice for your purchase in order to process
this warranty. You may also register your warranty online.
Please visit our website at www.bettermusicbuilder.com.
Precaution
1. If you want to use more than one of this system, please select the work frequency
(or signal channel) carefully so as to avoid disturbing.
2. The input power voltage of the receiver is 120V (±10%). If it is too low or too
high, it will affect the work of the machine.
3. When you install the battery, you must not reverse the electrode or you will
damage the machine.
4. When using the sensitivity solution function, the numerical value you select must be
at least 15dB. Otherwise, if the distance is too far, its signal-to noise radio goes
worse.
This symbol, wherever it appears, alerts
RISK OF ELECTRIC SHOCK
DO NOT OPEN
Caution: To reduce the risk of electrical shock, do not
remove the cover (or back). No user serviceable parts
inside: refer servicing to qualified personnel.
Warning: To reduce the risk of fire or electrical shock,
do not expose this appliance to rain or moisture.
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you to the presence of uninsulated
dangerous voltage inside the enclosure
voltage that may be sufficient to constitute
a risk of shock.
This symbol, wherever it appears, alerts
you to important operating and
maintenance instructions in the
accompanying literature. Read the
manual.
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TM
Passionate about Music
www.BetterMusicBuilder.com
®
Printed on 100% Recycled Paper ©2007 Better Music Builder (USA) Comments E-mail to [email protected] All Rights Reserved in USA.
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