Repair of acoustic systems: service centers in Moscow

Articles

Acoustic speaker

Speaker systems can be active or passive. They have different chips inside that are used for audio processing. In order for the sound to be of high quality, many devices are used to reproduce it. But all these devices cannot be seen with the naked eye, since they are located inside. But everyone who owns them should know how to repair acoustic speakers. Repairing acoustic buttons and other elements can be done with your own hands if you know the structure of the speaker. In our case, we will consider a situation where the speakers of the speaker stopped working. You need to purchase special glue in advance, which may be needed during the repair process. In general, any quick-drying glue you can find will do. It may just happen that during dismantling you will have to disassemble the glued joints. After that, they will need to be put back together somehow.

Discount cards

On the one hand, repairing active speaker systems is similar to repairing simple speakers. On the other hand, active acoustic systems differ from simple acoustic systems by the presence of their own audio amplifier. The presence of an autonomous amplification system also implies the presence of a control panel for this system, and of course a connection to the electrical network. It is by the presence of these components that ordinary users understand that the system is active and itself amplifies the signal. In the simplest case, such a system can be seen near every computer; these are 2.1 - 5.1 speaker systems.

Such a system in its simplest form consists of one two-channel amplifier, which is connected to the audio output on the computer, and the amplifier is built into one of the speakers. The second speaker is an ordinary passive one, connected to the same amplifier. But this is of course the simplest example. Serious concert systems have several amplifiers. So, 100 - 500 watt amplifiers from such manufacturers as Behringer, Yamaha, etc. made according to the Bi Amping circuit, which can be translated as two amplifiers. One amplifier amplifies low frequencies, the other amplifies high frequencies. The entire system, as a rule, is balanced for a specific power. This means that the signal is amplified to the power that is optimal for the installed speakers, and the power of the speakers is selected so that it reproduces sounds as closely as possible to reality. In reality, this is usually two amplifiers for the tweeter plus a full-range amplifier for the low and midrange speakers.

Typical Bi Amping Circuit

Such a system is, of course, much more complex. This means the number of possible malfunctions increases. From entry systems to speakers.

Speakers and their classification

Acoustic speakers

Before you begin repairing your speakers, you should know how the system works. This is necessary in order not to harm her in the process of performing certain actions. Despite the size of the column, it has two components: mechanical and electrical. The first one includes a coil with an induced current. The second contains a magnet, as well as a special membrane. At first glance, it seems that this mechanism is simple, but it is not. This is why you may need to classify speakers:

• Reel-to-reel. Their operating principle resembles the operation of a gas water heater (used to heat water). The ring of a magnet makes it move due to the generation of current in it.

Note: the device will work as long as all the turns of the coil are intact. Therefore, if the coil speaker does not work, then first of all you should pay attention to the integrity of the coil.

• Tape. In this case, the variable magnet is a narrow corrugation. In this case, there is no coil inside, as in the previous version. To use such a device, you should purchase matching transformers in advance that need to be connected to the circuit. Most often these transformers are already installed from the factory.

Note: it is their presence or absence that allows you to quickly find out the type of speaker.

• Isodynamic, which includes a square or round spiral. It carries out circular movements together with the membrane, being under the influence of a magnetic field.

Acoustic speaker

• Electrostatic speakers. Their main difference is that they work without making any movements. The current is initially already in the circuit, so there is no need to perform any actions to create it. In this case, the membrane moves a little, but it does not perform any translational movements.

Note: These are ideal for use in high-frequency speakers.

• Capacitor, which includes two electrodes. One of them is quite massive, since it performs an important function - supplying alternating potential. It acts as a support for the second electrode. By the way, instead of the second one, you can use foil twisted into a thin tube.
• There are also other types of speakers, but only the most popular and common ones were considered.

Speaker device

Acoustic speaker

The speakers work as follows:

• Thin wires go to the cap located on the membrane. The cap itself is attached using a diffuser. So these wires pierce it so that they have access directly to the cap.
• The coil should be light, since it is necessary to achieve low inertia in the system. After all, the oscillation frequency in the dynamics is enormous, so in order to move at such a speed, the moving part of the speaker should not be heavy.
• The magnet is installed motionless. Most often it has the shape of a ring. The hole contains a coil with an induced current. Typically it moves back and forth. It also moves the membrane with the cap. The connecting wires are also in constant motion. To prevent the moving parts from moving from their place, they are connected in the center by a special washer, which helps ensure that the axis of symmetry is not broken.

PRICE OF SPEAKER SYSTEMS REPAIR

*ATTENTION!!!! All prices do not include the cost of spare parts!

Hello to all lovers of good sound!

We invite you to our service center for repair and maintenance of audio equipment. Our specialists have extensive experience and perform high-quality repairs of speakers and amplifiers at the MUSIC-FIX.ru service center.

• We have been working since 2001, we have extensive experience working with a wide variety of types of acoustic devices.
• We have suppliers of both domestic and foreign brands.
• We do everything efficiently and competitively.
• We repair regardless of size, complexity or manufacturer.
• We are dealers in Moscow.
• We have our own spare parts warehouse for almost all types of speakers, and we also produce components ourselves.
• For those who live in the regions, we work with any postal items and transport companies.

We repair speakers in all areas:

• Speaker repair: All types - All sizes!
• Replacing speaker surrounds,
• Replacing speaker cones,
• Replacing speaker lead wires,
• Replacement of the moving system both as a whole and separately,
• Replacing the speaker centering washer,
• Replacing the magnetic speaker system,
• Cleaning magnetic speaker systems,
• Improving the sound characteristics of the speaker.
• Replacing speaker dust caps
• We are engaged in replacing the voice coil of speakers and rewinding the speaker coil to order, any size according to your characteristics, patterns and any resistance.
• When rewinding the coils, we use only high-quality, heat-resistant glue that can withstand temperatures above 200 degrees, this gives the speakers higher reliability and less chance of the coils failing again. We use proven enamel wires only from leading manufacturers.

We also produce:

• Amplifier repair,
• GU repair,
• Sound processor repair,
• Setting the quiescent currents of amplifiers,
• Replacing RCA connectors on amplifiers,
• Replacing amplifier power terminals.

Attention.

Why clients choose us:

• The extensive experience of our specialists allows us to solve your problems 2-3 times faster than other specialists.
• We employ only highly qualified specialists.
• We always have spare parts in stock.
• We are dealers of leading manufacturers of home and car audio and have access to any speaker components.
• We work with foreign and domestic brands.
• We restore and repair speakers of any complexity, regardless of the manufacturer.
• We use only high temperature adhesives for voice coils.
• From us you can get any, the most accurate information about the speakers.
• Most often our clients are referral clients.

Guarantee of professionalism, and therefore quality

Professional sound and lighting equipment should only be repaired by professionals. Our radio equipment workshop accepts requests for troubleshooting of any complexity. Not every service center is ready to take responsibility for repairing audio equipment or repairing lighting equipment from well-known manufacturers. This is expensive equipment and requires highly qualified specialists.

Our service center engineers have extensive experience in troubleshooting any equipment. To do this, we have all the necessary tools, certified instrumentation, and access to technical documentation. During the repair process, only original parts and consumables are used.

Carrying out accurate diagnostics allows you to eliminate unnecessary actions by the technician, which reduces the time of repair work and reduces their cost.

The service center specialists on Sukharevskaya are ready to repair radio equipment of famous world brands and brands. For us, the “experience” of the equipment does not matter - we even repair equipment that has been discontinued.

The technical laboratory workshop “Zvukoremont.rf” provides the most convenient service:

• visit of a specialist to the client’s address;
• delivery of equipment to the workshop and back to the customer after diagnostics and repairs;
• Carrying out diagnostics at the level of circuit elements;
• modernization and improvement of equipment.

Speaker repair services in Moscow

Is your amplifier unstable? Did the mixer fail at a crucial moment? Do not ignore malfunctions and do not bother yourself with your own repairs. Entrust troubleshooting to professional technicians. We carry out diagnostics and draw up a report on the technical condition of the equipment.

Your old speakers will last you a long time if you contact us. We will repair or replace:

• voice coils;
• windings of high-frequency drivers;
• diffusers;
• suspension;
• current-carrying terminals.

How to repair speakers

Repairing a broken voice coil involves completely disassembling the dynamic head. This is a complex and time-consuming process that requires certain skills. The easiest way out of the situation is to purchase a new speaker and replace the faulty one. It is possible to use a different type of emitter, the main thing is that it fits in the installation location and has the same resistance. In addition to loss of sound, distortion may occur in the speaker due to a break in the voice coil. If in a multi-channel system, distorted sound is reproduced from all speakers, then the output stage of the low-frequency amplifier of a particular channel is faulty.

To verify this, just swap the speaker systems of the stereo path or connect another speaker to the amplifier output.

If one loudspeaker “wheezes,” there may be two reasons: mechanical particles getting into the gap between the coil winding and the permanent magnet or a misalignment of the coil and the diffuser. Elimination of these defects also involves complete disassembly of the loudspeaker. If the speaker is combined in one housing with a low-frequency amplifier, then it is necessary to consider malfunctions of the acoustics and the amplifier separately. Repairing speakers with your own hands, in this case, is much more difficult, since there can be many more defects, and ULF repair requires knowledge of radio engineering and the availability of measuring equipment.

Audio system manufacturers

• Sven is a Finnish company whose products have received many awards and positive reviews.
• Microlab is an association of American and Chinese companies. It is a major manufacturer in the world of stereo class sound systems.
• Logitech is a large company whose products are manufactured in Asia. Initially, it produced computer mice, but now the product range includes many audio speakers, video cameras and other equipment.

• Speaker

How much does it cost to repair portable speakers?

The prices presented are for informational purposes only and do not constitute a public offer.

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