User Guide
2 CE 5 4 0 A
ACT-24HC
Rechargeable Handheld Transmitter
ACT-24TC
Rechargeable Bodypack Transmitter
All rights reserved.
Do not copy or forward without prior approvals MIPRO.
Specifications and design subject to change without notice.
MN 015/03
TransmitterTransmitter
Contents
Rechargeable Handheld Transmitter
1 Controls and Indicators
Handheld
3 Operating instructions for insertion &
removing battery
5
Operating instructions
6 Rear Cap has an On/Off Switch
Protection
7 General Tips for Improving System
Performance
Rechargeable Bodypack Transmitter
8 Bodypack Controls and Indicators
10
Audio Input Operating Instructions
11 O
13 AF
14 B
16
perating Instructions
Input Connections
attery Removal and Installation
MP-80 Battery Charger (Optional)
Handheld Controls and Indicators
1
2
3
4
5
6
0
1
7
8
9
1
Capsule Module: The anti-roll grille protects
detachable microphone capsule and the internal
foam prevents breathing, wind and POP noises.
Fixed Ring
2
3
Battery Compartment: Accommodates one
18500 rechargeable battery.
4
Housing: Protects transmitter PCB, battery
compartment and battery.
5
Ascertain the power is turn "ON" to see battery
status.
! Normal Battery: LEDs indicates battery
meters.
! Weak Battery: Red LED is lit. Recharge or
insert a new recharged battery.
! No LEDs light: battery is completely drained
or polarity inserted incorrectly.
6
Power On/Off Switch: Always power off the
transmitter to conserve battery life when not in
use.
7
ACT Infrared (IR) Sync Port: Receives signals
from receiver to synchronize frequencies
automatically.
8
Battery Charging Contact: Align contacts
during charging.
(a) Metal objects contact is forbidden.
(b) It is forbidden to contact metal objects.
9
Color Coded Protection Cap: Protects against
accidental power on/off. Available in different
colors for channel differentiation.
TransmitterTransmitter
Operating instructions for insertion
& removing battery
18500
rechargeable
lithium
battery
1. Remove grill in counter clock direction.
2. Press and hold both sides of microphone capsule
module and remove gently.
2
3
TransmitterTransmitter
3. Ascertain the battery is inserted according to its
correct polarity. A click is heard once correctly
inserted and grill can be closed properly. No
click is heard and grill cannot be closed properly
if battery is inserted with the wrong polarity.
NOTE:
Transmitter cannot be powered on with a charged
battery.
a. Check for correct polarity insertion.
(+ facing up)
b. If inserted with correct polarity and still cannot
be powered on it could be due to battery
protection mechanism is in effect. Insert the
whole transmitter back to the battery charger
for 10 seconds to “wake-up” and power on
again.
c. If battery charger is not used, reverse battery
polarity for 10 seconds and then re-inserted
with correct polarity to wake up the battery.
Power on again.
Operating Instructions
1. Power On & Off
a. Power On: Push the ON/OFF switch to the
"ON" location, the battery indicators will
light.
b. Power Off: Push the ON/OFF switch back, the
battery indicators will go out.
2. Battery Status Display
a. Red LED indicator is lit when battery is too
low. Please recharge or insert a new
recharged battery. The microphone will be
shut down automatically if the battery keeps
low status.
100%
75% 50%
(green indicator)
25%
(red indicator)
4
5
TransmitterTransmitter
Rear Cap has an On/Off Switch
Protection
The patented color rear cap serves two purposes; it
provides easy channel identification and protects
the on/off switch. It is designed to allow the on/off
switch to either be exposed or concealed as
desired. You can avoid unintended switching off of
the microphone by rotating the color rear cap 180
degrees to fix the on/off switch. The cap can be
removed by gripping it firmly and pulling; be sure
to push it firmly into place when replacing it on the
microphone.
Note: During microphone usage, the color
rear cap must be installed.
Press both sides and pull out to remove the rear cap
Turn the rear cap 180 degree and insert back
The ON/OFF switch is immovable
6
General Tips for Improving System
Performance
1. Performer should avoid holding the microphone over or
near the antenna section as this will deteriorate
transmission efficiency. Severe deterioration if performer
directly covers up the antenna section with both hands.
2. Many performers tend to hold the microphone by the top
grille. Unfortunately, this position seriously degrades both
the sound quality and directionality of a microphone. Even
the most expensive microphones will have its original
sound quality compromised by this method. Grabbing a
microphone by the grille will isolate the capsule's acoustic
resonance circuit or change the capsule resonator's
frequency. This results in an inferior performance in both
frequency response and the separation of directionality. In
addition, a palm's sound-focusing effect will tend to
strengthen resonances in certain frequencies and can
cause unwanted echo.
3. A proper technique is required for using directional
microphones because the distance between the
microphone and your mouth has a significant impact on
sensitivity and performance. There is an inverse
relationship between microphone sensitivity and the
distance from the mouth to the microphone. Consequently,
performers with a ''weaker'' sound level cannot expect to
hold the microphone too far away from their mouth and
compensate by turning up the amplifier volume to increase
the sound level as this can easily cause echo or feedback.
In contrast, performers with a ''louder'' sound level should
not hold the microphone too close as this can easily result
in distortion by causing the amplifier system to be
overloaded.
4. Furthermore, a large-diaphragm directional microphone
has a very distinct proximity effect. When the microphone
is close to the mouth, the bass response is strengthened
as the distance gets closer. Therefore, if a performer's
sound is insufficient in bass, they can hold the microphone
closer and use the proximity effect to help compensate for
the lower bass level. Conversely, if a performer's voice is
too heavy in the bass register, increasing the distance
between the microphone and their mouth will decrease the
proximity effect and reduce the bass response, thus
making their voice become clearer and brighter.
5. It is recommended to keep the grille and sponge
windscreen clean to avoid any substance blocking the
proximity effect of the microphone.
7
Bodypack Controls and Indicators
1
2
3
4
5
6
7
8
9
10
1
Audio Input Connector: TA4F mini 4-pin
connector accepts any MIPRO lavalier,
instrument and headset microphones and
cables. (See 5 ways of connection on AF Input
Connections)
2
AF Button: Light stands for audio signal. Press
it and the light goes out.
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3
Antenna: Flexible 1/ 4 wave transmitting
antenna.
4
Transmitter Housing: Holds PCB board and
wires.
5
Battery Level Panel: Display battery status.
6
ACT IR Port: Align and syncs the transmitter
and receiver frequency automatically.
7
Power Button: Press and hold 2 seconds to
power ON or OFF.
8
Battery Circuitry Protection Reset Button
9
Battery Compartment: Accommodates one
18500 rechargeable battery.
10
Battery Cover: Hinged cover opens to provide
11
12
13
access to one 18500 rechargeable battery.
11
External Mute Connector: When an external
mute switch cable, MJ-70 (optional) is connected
, user can manually mute and un-mute the
audio temporary.
12
Belt Clip: Detachable and reversible design
allows the transmitter to be worn on a belt,
waistband, or guitar strap ( .
13
Battery Charging Contact: Align contacts
Figure 1)
during charging.
(a) Metal objects contact is forbidden.
(b) It is forbidden to contact metal objects.
(Figure 1)
(Positive Wear) (Opposite Wear)
8
9
TransmitterTransmitter
Audio Input Operating Instructions
1. Insert the lavalier, headset microphone or
instrument cable into the audio input connector
before power ON the transmitter.
2. Tighten the connector screw clockwise direction
as shown in (Figure 2) for a secured fit.
Capsule Connector
Headset
Lavalier
The ridge on the
connector must align and
match the indentation on
the socket when inserting
for a proper fit.
(Figure 2)
Operating Instructions
1. Power On/Off
a. Power On: Press the Power button to power
ON. The battery status indicators and AF
Button indicator will light.
b. Power Off: During Power On status, press
and hold the Power button for 2 seconds to
power OFF.
2. Battery Status Display
a. Red LED indicator is lit when battery is too
low. Please recharge or insert a new
recharged battery. The transmitter will be
shut down automatically if the battery keeps
low status.
100%
75% 50%
(green indicator)
(red indicator)
25%
10
11
TransmitterTransmitter
3. AF Button Setup
a. Press AF Button to enter mute mode, and
the indicator doesn't light.
b. Press AF Button again to un-mute, and the
indicator lights.
4. External Mute Connector
a. External mute connector is a 3.5mm jack.
When an external mute switch cable, MJ-70
(optional) is connected, user can manually
mute and un-mute the audio temporary.
AF Button
External Mute Connector
5. MJ-70 External Mute Switch (Optional)
B1
3.5mm jack.
B2
External mute switch on/off button.
NOTE: Plug it into the device before to power on
the bodypack transmitter.
AF Input Connections
(1) 2-Wire Electret condenser
microphone Capsule
PIN
SHIELD
1
AUDIO
2
3
4
(2) 3-Wire Electret condenser microphone Capsule
PIN
SHIELD
1
2
AUDIO
3
BIAS
4
(3) Dynamic Microphone
2
1
3
SHIELD
AUDIO
PIN
1
2
3
4
(4) Electric Guitar
PIN
SHIELD
1
2
AUDIO
3
4
2
3
1
4
2
3
1
4
2
3
1
4
2
3
1
4
B1
B2
12
(5) Line-in (Impedance 8KΩ ATT. 10dB)
PIN
SHIELD
13
AUDIO
1
2
3
4
2
3
1
4
TransmitterTransmitter
Battery Removal and Installation
1. Pushing down both snap locks on the sides to
open battery compartment cover. Take out the
two batteries. (Figure 3)
2. Insert one charged 18500 rechargeable battery
into the battery compartment according to the
correct polarity (- and +) as shown in (Figure 4)
. Then close the battery compartment cover
tightly.
(Figure 4)(Figure 3)
Caution
Note: Transmitter cannot be powered on with
charged battery.
Method 1:
a. Ensure battery is inserted correctly with + top
side.
b. If battery is inserted correctly it could be due
to self battery protection mechanism. Insert the
transmitter into the charger to re-charge for
10-20 seconds to wake-up the battery. It
should work.
c. If charger cannot be used, reverse the battery
insertion for 10-20 seconds, wake up the
battery with correct polarity. It should work.
Method 2:
a. Power off the transmitter before open the
hinged cover. Press battery protection circuitry
reset button once to wake-up battery. Power on
the transmitter.
ON
Caution
Remove the batteries if unused for a long period of
time to prevent battery leakage, corrosion and
causes possible damage to electronics.
14
Battery Protection
Circuitry Reset Button
15
TransmitterTransmitter
MP-80 Battery Charger (Optional)
MP-80 Charger charges both transmitters and
18500 rechargeable batteries.
Transmitters Charging
18500 Charging
Notes
1. Refer to actual product in the event of product
description discrepancy.
2. Frequency range and maximum deviation comply
with the regulations of different countries.
Transmitters Charging
16
Federal Communication Commission Interference
Statement
This equipment has been tested and found to comply with
the limits for a Class B digital device, pursuant to Part 15
of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause
harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be
determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one of
the following measures:
!
Reorient or relocate the receiving antenna.
!
Increase the separation between the equipment and
receiver.
!
Connect the equipment into an outlet on a circuit
different from that to which the receiver is connected.
!
Consult the dealer or an experienced radio/TV technician
for help.
FCC Caution: To assure continued compliance, any
changes or modifications not expressly approved by the
party responsible for compliance could void the user's
authority to operate this equipment. (Example - use only
shielded interface cables when connecting to computer or
peripheral devices).
FCC Radiation Exposure Statement
This equipment complies with FCC RF radiation exposure
limits set forth for an uncontrolled environment. This
equipment should be installed and operated with a
minimum distance of 0.5 cm between the radiator and your
body.
17
TransmitterTransmitter
This transmitter must not be co-located or operating in
conjunction with any other antenna or transmitter.
The antennas used for this transmitter must be installed to
provide a separation distance of at least 0.5 cm from all
persons and must not be co-located or operating in
conjunction with any other antenna or transmitter.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received,
including interference that may cause undesired operation.
IC
This device complies with Industry Canada RSS-210
ISSUE 8 standards. Operation is subject to the following
two conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference, including
interference that may cause undesired operation of the
device.
Le présent appareil est conforme aux CNR d'Industrie
Canada applicables aux appareils radio exempts de licence.
L'exploitation est autorisée aux deux conditions suivantes:
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage
radioélectrique subi, même si le brouillage est susceptible
d'en compromettre le fonctionnement.
18
WARNING
1. FOR OUTDOOR USE:
To reduce the risk of fire or electric shock, do not
expose this apparatus to rain or moisture.
2. UNDER WET LOCATION:
Apparatus should not be exposed to dripping or
splashing and no objects filled with liquids, such as
vases should be placed on the apparatus.
3. SERVICE INSTRUCTIONS:
CAUTION - These servicing instructions are for use by
qualified service personnel only. To reduce the risk of
electric shock, do not perform any servicing other than
that contained in the operating instructions unless you
are qualified to do so.
This symbol indicates that dangerous voltage
constituting a risk of electric shock is present
within this unit.
This symbol indicates that there are important
operating and maintenance instructions in the
literature accompanying this unit.
Disposal
2005 -08-1 3
19
Dispose of any unusable devices or batteries
responsibly and in accordance with any
applicable regulations.
Disposing of used batteries with domestic waste
is to be avoided!
Batteries / NiCad cells often contain heavy
metals such as cadmium(Cd), mercury(Hg) and
lead(Pb) that makes them unsuitable for
disposal with domestic waste. You may return
spent batteries/accumulators free of charge to
recycling centres or anywhere else batteries/
accumulators are sold.
By doing so, you contribute to the conservation
of our environment!
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