Stereo Audio Signal Isolation Audio Common Ground Isolator
Eliminate Current Sound
1.Product description
Place of origin | Shenzhen,China |
Brand name | ZXY-M372 |
Model dimension | 45*30mm |
Product key word | Stereo audio signal isolator |
| Application | Sound equipment |
Supplier type | Original manufacturer |
Feature | High security |
Packaging | Carton |
| OEM or ODM | Customized |
2.Features
1.Parts selection: Two independent audio transformers are used, and
the transformer material is made of aerospace materials.
2.High sensitivity and high reducibility, 10-20dB higher
sensitivity than similar low-end transformers, full timbre and pure
sound quality.
3.Circuit design: stereo dual channel independent design, circuit
board specifications: 45mm*30mm? Very small, suitable for small
Spaces such as car interior installation.
4.Connection mode: There are two connection modes, which can be
input and output through 3.5MM headphone socket, or directly
connected through two blue wiring sockets.
5.Main functions: eliminate current sound. The common ground
isolation audio transformer eliminates the current sound brought by
the AUX common ground, and the output and output ground wires are
isolated through the transformer, and there is no common ground.
3.Introduction
This product is an audio common ground isolator, effective for
noise caused by common ground between audio source and receiving
equipment.
To put it simply, the common ground is that the ground point of the
two electrical appliances is not at the same point, because of the
difference in grounding resistance, the noise is transmitted
through the ground wire into the electrical equipment, forming
interference. Because the ground points of the two devices are
different, it is possible to produce common ground noise. In the
car audio, there is a kind of audio interference, like whistling,
the frequency of this noise will change with the speed of the
engine.
Therefore, this product can only eliminate the noise and current
sound of common electric and ground products, and can not eliminate
the noise caused by other reasons, so it is necessary to confirm
the source of noise in person.
4. How to determine if noise is caused by common grounding
(1). the use of headphones and car MP3, car navigation AUX (3.5mm
interface) connected, if there is no noise heard from the
headphones at this time, you can confirm that the noise of the car
equipment is caused by common ground.
(2). use the audio line to connect the battery-powered mobile
phone, or MP3(pay attention to the mobile phone, MP3 do not connect
with any power supply in the car, such as the phone) and the AUX of
the car console, and play the music of the mobile phone, so that
there is no noise, you can confirm that the noise in the past is
caused by common ground.
(3). computer, power amplifier, audio, CD: the use of passive
headphones inserted in the computer to listen to no noise, the use
of mobile phones inserted in the power amplifier, audio test, if
there is no noise between the two, the basic judgment is caused by
common ground.
(4). after starting the car, the installed power amplifier has the
current sound, some models will also appear the larger the
throttle, the larger the current sound, this product can solve this
problem.
(5). there is a current sound between the power amplifier and the
speaker or speaker, you can install this product between the power
amplifier and the speaker.
(6). the laptop computer connected to the projector at the same
time to the power amplifier to produce noise, you can connect the
laptop adapter power supply or battery, at this time unplug the
power amplifier noise disappeared, or unplug the projector the same
noise disappeared, then you can add a common ground isolator
between the headset hole and the power amplifier to eliminate
noise.
