Amphony L1520 Manuel
RR
User and Installation
Guide
5.8 GHz DIGITAL Wireless
Audio Transmitter / Amplifier
Model 1520
Contents
Unpacking
Connecting the transmitter
Connecting the amplifier
Placing the transmitter and amplifier
Operating the transmitter
Operating the amplifier
Troubleshooting
Technical specifications
Safety information
Your warranty
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User and Installation Guide
RR
Step 1Step 1 Connecting the transmitter
The transmitter connects either to a standard line-out audio interface via the
supplied RCA cable or to an amplified speaker output via the supplied short
speaker cables.
If the transmitter is connected via speaker cables, observe the polarity of the
cable connection to ensure that the transmitter will be fed with a correct
polarity signal. If one of the cables is switched (reversed), one speaker will
receive an opposite polarity signal which will degrade sound performance.
The transmitter can also be connected to other audio outputs by using an
appropriate adapter.
Connect the supplied small AC adapter’s barrel-shaped plug into the DC 9V
jack, and then plug the transformer into a standard AC outlet. We recommend
the use of a surge protector to protect the transmitter from power surges.
Unpacking: Check that this package contains:
One 5.8 GHz Digital Audio transmitter - Model 1520, one DigitalAudio
amplifier - Model 1520, one small and one large AC adapter (wallwart), two
short speaker cables, one RCA audio cable.
ATTENTION! Do not use both the speaker cables and RCA cable. Do not
connect speakers to the transmitter. Do not connect the large
AC adapter to the transmitter.
Page 2
User and Installation Guide
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Page 3
LRDC 9V
L R
L R
AUDIO
LINE OUT
Audio Source
Transmitter
DC 9 V
300 mA
Power outlet
AC adapter
Using the transmitter RCA audio input:
LRDC 9V
L R
Using the transmitter speaker audio input:
Transmitter
DC 9 V
300 mA
Power outlet
AC adapter
L R
SPEAKER OUT
Audio Source
User and Installation Guide
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Page 4
User and Installation Guide
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Page 5
Step 2Step 2 Connecting the amplifier
Connect the DC power input of the amplifier with the supplied large 24 V AC
adapter (wallwart). The use of a surge protector is recommended to protect
the amplifier from power surges which may damage the amplifier and
connected speakers or may cause audio dropouts.
The amplifier connects to regular passive loudspeakers via regular speaker
cables (not included). Observe the correct polarity when connecting the
speakers.
It is also possible to connect both speakers to separate amplifiers by using
an additional amplifier. In this case connect one speaker to the left audio
output of the first amplifier and the second speaker to the right audio output
of the second amplifier. One audio output of each amplifier will not be used
in this case.
ATTENTION! Never short circuit any amplifier audio output since this may
damage the amplifier.A clicking noise may be generated
during amplifier power up. Therefore, it is recommended to
connect power to the amplifier prior to connecting the
speakers.
User and Installation Guide
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Page 6
Amplifier
DC 24 V
1000 mA
DC 24 V
1000 mA
Power outlet
AC adapter
Speakers
User and Installation Guide
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Page 7
Step 3Step 3 Placing the transmitter and amplifier
For optimum reception, the amplifier should be placed within the line of sight
from the transmitter. If possible, the amplifier should be placed right side up
with its front toward the transmitter.
The transmitter should be placed at an elevation such that there are no
obstacles between the transmitter and amplifier (line of sight) in an area
where there will be the least amount of traffic. We suggest that you place the
transmitter on top of your audio source. Example 1 on page 8 shows the
optimum placement of the transmitter and amplifier.
The amplifier can also be placed as shown in example 2. In this case, no line
of sight exists and the operating range is reduced.
You can mount the amplifier vertically by using the 2 screw openings at the
bottom of the amplifier. If the amplifier is mounted vertically, the operating
range is reduced compared to mounting the amplifier right side up.
The amplifier incorporates a directional antenna which prefers signals
transmitted toward the front of the amplifier. Therefore, the front of the
amplifier should always be facing toward the direction of the strongest
transmitter signal. By properly orienting the amplifier, interference from other
signal sources can be minimized.
We suggest that you experiment with placement in order to find the best
location for the transmitter and amplifiers.
Note: This product will not work properly from within an enclosed metal
cabinet.
User and Installation Guide
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Page 8
Example 1: Amplifier placed
on top of a speaker Example 2: Amplifier mounted
vertically behind a speaker
Transmitter
Speaker
Amplifier
Transmitter
Speaker
Amplifier
line of sight indirect connection
(reflected signal)
User and Installation Guide
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Page 9
Step 4Step 4 Operating the transmitter
After powering up the transmitter, the transmit light will go on for approximately
five seconds while the transmitter initializes.
After initialization, the transmit light will go out.
Initially, set the transmitter volume control to a middle setting.
Once audio is detected at the audio input, the transmit light will go on and the
transmitter will transmit the audio signal.
When audio is no longer detected, the transmitter will go into standby mode
after approximately one minute. The transmit light will go out. During standby
mode, no signal is transmitted.
5.8 GHz Digital Audio Transmitter5.8 GHz Digital Audio Transmitter
RR
TRANSMIT
TRANSMIT
Transmit light
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