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BLX -- Wireless System
IMPORTANT SAFETY INSTRUCTIONS
1. READ these instructions.
2. KEEP these instructions.
3. HEED all warnings.
4. FOLLOW all instructions.
5. DO NOT use this apparatus near water.
6. CLEAN ONLY with dry cloth.
7. DO NOT block any ventilation openings. Allow sufficient distances for adequate ventilation and install in accor
dance with the manufacturer’s instructions.
8. DO NOT install near any heat sources such as open flames, radiators, heat registers, stoves, or other appara
tus (including amplifiers) that produce heat. Do not place any open flame sources on the product.
9. DO NOT defeat the safety purpose of the polarized or grounding type plug. A polarized plug has two blades
with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wider
blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an
electrician for replacement of the obsolete outlet.
10. PROTECT the power cord from being walked on or pinched, particularly at plugs, convenience receptacles,
and the point where they exit from the apparatus.
11. ONLY USE attachments/accessories specified by the manufacturer.
12. USE only with a cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus.
When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
13. UNPLUG this apparatus during lightning storms or when unused for long periods of time.
14. REFER all servicing to qualified service personnel. Servicing is required when the apparatus has been dam
aged in any way, such as power supply cord or plug is damaged, liquid has been spilled or objects have fallen
into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has
been dropped.
15. DO NOT expose the apparatus to dripping and splashing. DO NOT put objects filled with liquids, such as vas
es, on the apparatus.
16. The MAINS plug or an appliance coupler shall remain readily operable.
17. The airborne noise of the Apparatus does not exceed 70dB (A).
18. Apparatus with CLASS I construction shall be connected to a MAINS socket outlet with a protective earthing
connection.
19. To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
20. Do not attempt to modify this product. Doing so could result in personal injury and/or product failure.
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21. Operate this product within its specified operating temperature range.
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 litera
ture accompanying this unit.
WARNING: This product contains a chemical known to the State of California to cause cancer and birth defects or
other reproductive harm.
System Components
Note: Your system comes with a combination of the following components.
•BLX1 Bodypack Transmitter
•BLX2 Handheld Transmitter (choice of SM58, BETA58A, or PG58)
•BLX4 Wireless Receiver
•BLX88 Dual Wireless Receiver
•PS24 Power Supply
•Lavalier microphone (choice of PG185, WL185 or WL93)
•Headworn microphone (choice of PG30, SM31FH or SM35)
•MX153 Earset microphone
•Instrument microphone (BETA98H/C)
•Guitar cable (WA302)
Quick Start Guide
1. 1. Connect receiver to power source.
2. Connect receiver to mixer or amplifier. Hold power button to turn on.
2. Press group button on receiver to perform a group scan.
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3. 1. Install batteries and turn on transmitter.
2. On the transmitter, set the group and channel to match the receiver. The audio LED on the receiver should
illuminate.
If setting up additional systems, leave the first transmitter and receiver on. For each additional receiver,
manually set the group to match the first receiver. Note: The receiver will automatically perform a channel
scan to find an available frequency after the group has been selected. Set the transmitter frequency to
match the receiver.
4. If sound is too faint or distorted, adjust the gain accordingly.
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Features
Front Panel
BLX4
BLX88
①audio LED
Indicates strength of incoming audio signal: green for normal and red for overload.
②ready LED
Green light indicates system is ready for use and receiving transmitter signal.
③LED Display
Displays group and channel setting.
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④group and channel Buttons
Scan: Push and release group button to scan for an open group and channel.
Manual: Push and hold group button to select a group. Push channel button to select a channel in the current
group.
⑤power Button
Push and hold to turn power on or off.
Back Panel
BLX4
BLX88
①DC Power Jack
②Adapter Cord Tie-Off
③XLR microphone output jack (MIC out)
④6.35 mm (1/4") instrument level output jack (instrument out)
BLX1
①LED Indicator
Displays power and battery status (see Transmitter LED Indicators).
②power Switch
Toggles power on or off.
③4-Pin Microphone Input Jack (TA4 connector)
④Antenna
⑤group Button
Changes group setting.
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⑥LED Display
Displays group and channel setting.
⑦channel Button
Changes channel setting.
⑧Battery Compartment
⑨Audio Gain Adjustment
Rotate to increase or decrease transmitter gain.
BLX2
①LED Indicator
Displays power and battery status (see Transmitter LED Indicators).
②power Button
Push to turn power on or off.
③group Button
Changes group setting.
④channel Button
Changes channel and gain setting.
⑤LED Display
Displays group and channel setting.
⑥Identification Cap
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⑦Battery Compartment
Transmitter LED Indicators
LED Indicator Status
Green Ready
Rapidly Flashing Red Controls locked
Solid Red Battery power low (less than 1 hour remaining*)
Flashing Red and shuts off Batteries dead (change batteries to power on transmitter)
*For alkaline batteries only. For rechargeable batteries, solid red means the batteries are dead.
Single System Set Up
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Before you begin, turn off all transmitters and turn on any equipment (other microphones or personal monitoring
systems) that could cause interference during the performance.
1. Press and release the group button on the receiver.
The receiver scans for the clearest group and channel.
Note: If you want to stop the scan, push the group button again.
2. Turn on transmitter and change the group and channel to match the receiver (See Setting Transmitter Group
and Channel).
Once the system is set up, perform an audio check and adjust the gain if necessary.
Setting Transmitter Group and Channel
Transmitter group and channel must be manually set to match the receiver.
Group (letter)
1. Press and release the group button on the transmitter to activate the display. Press the group button again and
the display flashes.
2. While the display is flashing, press the group button again to advance to the desired group setting.
Channel (number)
If channel needs to be changed, follow the same procedure using the channel button instead of the group button.
Note:
•When the group and channel correctly match the receiver, the ready LED on receiver illuminates.
•After manual setup, the transmitter alternately displays the group and channel setting for about two seconds.
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Multiple System Setup
Up to 12 systems can operate simultaneously (band and RF environment dependent).
Important: Set up each system one-at-a-time. Once a receiver and transmitter are tuned to the same group and
channel, leave the transmitter powered on. Otherwise, scans from the other receivers will not detect that channel
as occupied. For the BLX88, be sure to setup both transmitters before progressing to the next receiver.
Turn on any other equipment that could cause interference during the performance so it will be detected during the
group and channel scans in the following steps.
Before you begin system set up, turn all receivers ON and all transmitters OFF.
For the first receiver:
1. Perform a group scan.
This finds the group with the most clear channels.
Note: For the BLX88, the group scan sets up both receivers at the same time.
2. Turn on the first transmitter and change the group and channel to match receiver.
3. Leave the transmitter on and continue with the additional systems.
Note: If the selected group does not contain enough open channels, manually select group "d" when setting up
larger systems.
For each additional receiver:
1. Use manual setup to change the receiver to match the group setting of the first receiver. Recall that each time
the group setting is changed, a channel scan is automatically done.
2. Turn on the transmitter and change the group and channel to match the receiver.
3. Leave the transmitter on and continue to the next system.
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4. Once all receivers are set up, perform an audio check on all microphones.
Manually Setting Receiver Group and Channel
The receiver group may need to be changed as part of a multiple system setup.
Group (letter)
1. Hold the group button on the receiver until the display begins to flash.
2. While the display is flashing, press the group button again to advance to the next group.
Note: Only the group setting will be displayed during the manual setup.
3. Once the desired group is reached, release the group button. The receiver automatically performs a channel
scan.
Channel (number)
Always use a channel selected by the channel scan. However, if necessary, the channel can be set manually. Fol
low the same steps above using the channel button instead of the group button.
Locking and Unlocking Controls
Lock system controls to prevent accidental setting changes or power off.
Transmitter (lock/unlock)
Turn the transmitter on. Hold the group button, then press the channel button for approximately 2 seconds. The
LED indicator rapidly flashes red when locked.
Receiver (lock/unlock)
Turn the receiver on. Simultaneously hold the group and channel button. The display flashes rapidly.
•When locked, the display flashes rapidly if any key is pressed.
•The BLX88 locks on both sides when locked from either side.
Tips to Improve Wireless System Performance
If you encounter interference or dropouts, try the following suggestions:
•Choose a different receiver channel
•Reposition the receiver so there is nothing obstructing a line of sight to the transmitter (including the audience)
•Avoid placing transmitter and receiver where metal or other dense materials may be present
•Move the receiver to the top of the equipment rack
• Remove nearby sources of wireless interference, such as cell phones, twoway radios, computers, media play
ers, Wi-Fi devices, and digital signal processors
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