JBL CHARGE 2. JBL portable speaker. What is a portable column JBL

JBL was founded by the American engineer James Bullow Lensing in 1946. The organization specializes in the production of audio equipment for home and professional use. Constantly developing and improving its technologies, JBL has established itself as the best manufacturer of high-quality acoustic systems.

Despite the fact that the company stood at the origins of creating audio equipment, it still enjoys incredible popularity in both ordinary users and musicians speaking at various sites. In his reviews, they admire the quality of the sound of the equipment. The JBL columns differ from the acoustics of other manufacturers in the following characteristics:

• all high quality equipment details;
• affordable price;
• wide selection of portable models;
• a large range of colors and design solutions;
• multifunctionality (water protection, portable models can be used as a charger);
• high-class sound.

Based on user reviews and opinions of warranty service experts, we made up the top 10 best speakers for trips and homework.

Top 10 best Speakers JBL

JBL produces many miniature models with an interesting design. Small-sized Soundbars perfectly fit into the modern interior of a small room, and high-quality sound will allow on the home sofa to plunge into the atmosphere of the cinema. Miniature speakers create comfort in the cabin, while the sound volume exceeds all expectations.

Portable columns are indispensable during the rest in nature, away from urban fuss and electricity. Wireless devices are perfectly combined not only with smartphones, but also with home gadgets, which helps to get rid of a set of cables scattered along the floor. JBL columns bypass their competitors in price, high-quality loud sound, compactness and unusual design.

10 Soundgear

Maximum sound with mobility maximum. VR-Point Partner
Country: USA (produced in China)
Average price: 6 000 ₽
Rating (2019): 4.2

Such a column is also most likely not seen - in shape it resembles or headphones, or a pillow headrest. But in fact, it is a very cool device with 4 speakers and a low-frequency gain function that allows you to enjoy surround sound And while staying in the real world. You just wear it on the neck and ... find yourself in the center of the symphony orchestra. Or at the concert hole Jones. Or Pink Floyd. In general, with such a thing, the time for listening to high-quality music is clearly added, and notice, not to the detriment of basic affairs.

Users in reviews noted the fullness of the speaker system, good response and ease of switching between devices. Gadget can be used to organize conference calls, watching 3D VR films and gemina. The design on the neck is already in half an hour of imperceptible, the sound pressure on the drummers is excluded (if the sound has not been configured louder than it follows), and nothing interferes with the surrounding. Well, not a miracle?

9 PULSE 3.

The most original concept. Interior art object
Country: USA (produced in China)
Average price: 10 500 ₽
Rating (2019): 4.3

The idea to combine portable acoustics with built-in light music seems to be on the surface, but for some reason they thought to it only in JBL. And do not even doubt that here it was possible to implement it at the highest level, ranging from mega-cool packaging and ending with the WOW-effect from the device's operation. 2/3 of its body occupies an acrylic cylinder, hiding inside 100 multicolor LEDs - not a column, but a kind of musical stroboscope. Unique!

Two Pulse 3 stereo pairs, built using the Connect + function, and at all creates a musical-light show, worthy of the best scene of the city. With the practicality of the model, too, everything is in order: it sounds loud and bassist 360 °, keeps the charge of 12 hours, can be used as speakerphon and AUX. Oh yeah, still calls Google Now by pressing one button - in the 21st century, modern bluetooth acoustics should be able to be. But the portable column can only be considered conditionally, because no one will decide to throw such beauty in the backpack.

8 Clip 3.

The most compact size in combination with a powerful sound
Country: USA (produced in China)
Average price: 2 700
Rating (2019): 4.4

The CLIP 3 model is addressed to the most numerous audience of JBL - young people who love to exrerematically spend time or just travel, but are not ready to part with their favorite musical compositions. Its distinctive features - built-in metal carbine for fastening to clothing or backpack, compact sizes (97x137x46 mm), water protection, increased up to 10 hours Autonomy and a significant increase in volume - fully comply with the requirements of sports and outdoor activities.

A speakerphone with an echo and noise reduction is built into the column, so the gadget can be used to respond to phone calls. You can listen to music either by bluetooth or through the mini-jack connector. For the dimensions of the column, the articulation of sound is flawless, and even if you make music louder, distortion is not heard. This is a branded feature of the whole portable acoustics JBL. It seems that brand engineers opened another secret of happiness - light wind in face, friends near and favorite composition from Clip!

7 Bar Studio.

Best Soundbar for TV With Double Bass Port
Country: USA (produced in China)
Average price: 7 500 ₽
Rating (2019): 4.4

Even recently the dreamed of kinomans was a home theater, but today a much more logical solution is sound panel Jbl Bar Studio. This is a unique audio system that allows you to enjoy the powerful multichannel sound in a small space. In addition to "cooperation" with a TV, the gadget is designed to work as an independent player. Using the bluetooth module, it can read data from any mobile device. Overlapping sound is fantastic, and this is the merit of two bass ports, two HF speakers with a total capacity of 30 W and Surround Sound technology.

The connection panel is active, i.e. it connects to a TV or a computer directly, via AUX or HDMI. It is controlled by a remotely complete console, which can be synchronized with the TV console. Finally, it became possible to assemble in one elegant case of 614x58x86 mm in size all components of the digital audio system, sending cumbersome to the well-deserved outdoor columns And monumental subwoofers!

6 go.

Optimum price. Fast battery charge
Country: USA (produced in China)
Average price: 1,899
Rating (2019): 4.7

The size of the JBL Go allows you to always wear a column with you everywhere, because it easily places in pocket pocket. Gadget is characterized by ease of use and good soundbut most attracts its price. The wireless device is capable of working 5 hours in a row without additional recharging. The device qualitatively reproduces music, and the volume is enough to evenly fill the room with a sound to 40 square meters.

The column is represented in 8 different color solutions, which allows you to choose the design for every taste. The gadget is equipped with a noise reduction microphone, so it can be used as loud communication For smartphones. The column is equipped with a special fastening, so it can be hung on a backpack or clothing.

Advantages:

• the full charge of the battery occurs in 1 hour;
• the weight of the device is 0.13 kg.

Disadvantages:

• low bass lacks volume;
• not synchronized with other JBL speakers.

5 GT7-96

Best Compact Speaker for Car
Country: USA (produced in China)
Average price: 2 900 ₽
Rating (2019): 4.7

The stylish three-track speaker of the speaker system is perfect for cars in which there is no place for a subwoofer. Polypropylene diffusers Plus One have long been patented by the manufacturer, and differ from their competitors a large surface area. This feature increases sensitivity, and also improves expressiveness and sound quality.

In response, users note a truly surround sound without wheezing and noise. However, not everyone likes how the columns reproduce the "heavy rock" and "metal", there are no complaints to other musical directions. It is also worth noting that the sound quality depends on proper Installation and equipment settings.

Advantages:

• clear sound;
• excellent quality bass.

Disadvantages:

• in the configuration there are no tips on the wires.

4 Flip 4 Special Edition

Mainstream design. The most loud sound
Country: USA (produced in China)
Average price: 6 000 ₽
Rating (2019): 4.8

We recognize, we also went to the marketers, bringing the best column Flip. 4 Special Edition - from the "sister" it is distinguished only by incredibly steep colors. Some names are worth - "Malta", "Mosaic", "Trio" ... They look so original, and the price difference with the usual version is so funny that there is no question about the complexity of choice - if appreciated qualitative sound And beautiful design, it is uniquely necessary to take this model.

For the volume in it there is a pair of active and pair of passive emitters of 8 W, but, no matter how surprisingly, it sounds about 50% louder than all models with similar parameters - they agree with this most of the reviews. And at the same time no downturns in bass, and the middle along with high frequencies is clearly audible. If this is not enough, we advise you to organize with familiar JBL portable audio owners - efforts are repeatedly justified by the pleasure of synchronous music playback.

3 Boombox.

Modern replacement of the music center
Country: USA (produced in China)
Average price: 21 000 ₽
Rating (2019): 4.9

It seemed to us that the main desire of the developers of this column was to give users as much sound as they can digest (well, or their neighbors). Following it, in the 5-kilogram "Boombox" integrated 4 active converters (2 to 102 mm and 2 to 20 mm), providing powerful sound, Be pop, rock or techno. According to reviews, the bauxite column be healthy, even the chandeliers are trembling, and to catch overload, you need to try to try to good.

What is portable in this "fortress," may ask someone. And the manufacturer will answer - "Pen!". Without it, I would have to dust the column of home, and so with her even at the sports ground, even at the cottage, even at sea. Fortunately, water resistance allows - in September 2017, when everyone acquainted with Boombox at the IFA exhibition, it was simply watered with water from above. It is impossible not to tell about the giant autonomy of the device - 20,000 mA ∙ h and 24 hours of sound! In general, the device is solid in all respects.

2 Charge 3.

The best price value and sound quality ratio. Best-seller
Country: USA (produced in China)
Average price: 8 100 ₽
Rating (2019): 4.9

Almost at the very top of the rating, the 3rd generation of the legendary CHARGE line is bangible. It is simply amazing how this bluetooth column with 2 broadband speakers of 10 W issues a saturated and natural sound with chic bass - better than some analogues that stand more expensive. And the format of her universal - the device can be put in a small bag, a bicycle blister, take with you to the beach or in the park.

In addition to quality loud sound, Equipment should be noted. It is not enough that the battery with a capacity of 6000 mAh is enough for the 20-hour listening of hits, so also the unnecessary device - Powerbank - you no longer need to wear with you. Thanks to the JBL Connect function, you can connect to another JBL device and form a stereo stereo with even more surround sound. I am glad and the decent degree of waterproof - IPX7, in which the column will work even after a short-term (up to 30 minutes) immersion in water. And really hit deviss!

1 Xtreme 2.

First Class Audio Speed \u200b\u200bfor Open Air
Country: USA (produced in China)
Average price: 13,200
Rating (2019): 5.0

The appearance of this model was impatiently waited for everyone who was heard, as far as the "extreme" of the previous version. Truly, there is no limit to perfection: the updated Bluetooth column has become even better and in ergonomics (the shape of the supports and the face of the attachment has changed, has become more easy access to the interface), and in specifications. Thus, the frequency range became wider (the lower threshold dropped from 70 to 55 Hz), up to 75 mm the diameter of the NC and SC-Speakers increased, tweeters became more and 20 mm.

All this together with a 40-watt power system and passive emitters new form Provided crystal clear sound with steep bass, detailed high and balanced medium frequencies. To assess the level of sound, you need to hear it yourself! Judging by the reviews, the device is not afraid of splashes and even short-term immersion in water, it is easy to connect through bluetooth with "counterparts" - at least hundreds at the same time. You can have fun up to 15 hours in a row, after which the column for record 3 hours is charged and ready to drive again.

For a long time caused ambiguous responses of specialists and ordinary users. On the one hand, such systems provide an obvious advantage due to the possibility of free displacement and independence from wired energy supply. But on the other, the compact dimensions and nutrition from the battery elements still limited the sound quality of the equipment. Change the current idea of \u200b\u200bthis concept was securely presented in several versions. Such devices are not only distinguished by worthy qualities of playback of compositions, but also ergonomics and original design.

General information about portable JBL models

The latest models of the portable device lineage JBL significantly improved in various directions - from the smallest in design before introducing new technologies like the Bluetooth wireless module. What is important: the JBL portable column is still of interest in the point of view of sound quality. The manufacturer does not miss the use of expensive materials of the element base, which allows acoustics along with mobility support to also enjoy listening to music.

Special attention developers pay the structural execution of models. Most modifications of this type have a cylindrical form factor, which improves the convenience in the process of physical exploitation. In addition, the JBL portable column is distinguished by the presence of a rubberized shell for easy grip. The output places of the speakers are accumulated in the housing niche, which increases and reliability in use. In other words, the design is calculated not just on mobile circulation, but also focuses on the active lifestyle of the user. The columns can be mounted on the bike frame, place the backpack outside or put on any flat surface.

The main characteristics of the portable acoustics JBL

Ensure good sound playback features allow operating system performance. In particular, the frequency range is an average of 100-20,000 Hz. And if the upper limit is usually preserved at 20,000 Hz, the lower range varies from 75 to 160 Hz, depending on the model. As for the total capacity, it constitutes a corridor from 3.5 to 15 W. Of course, against the background of full columns, these indicators are not impressive, but it is necessary to make a serious discount on the size of mobile acoustics - for this class and 10 W in total capacity is a very worthy value. The sensitivity in almost all representatives of the line is at one level - 80 dB. Interesting and performance indicator on one charge. Its duration is an average of 5 h in conditions active use. Now you can go to a more detailed acquaintance with the advantages and disadvantages of individual models. This will help on the basis of feedback from users themselves.

Reviews of the model JBL Charge

Compact stereo system, which is in the portable family acoustics JBL. It occupies a middle position. She is the most popular among brand fans. According to them, the column is characterized by high-quality sound, ergonomic control and the inclusion of the latest technological systems. In particular, the user can find out about the main operational indicators on special indicators located on the housing. Charging is carried out via the USB port, and the battery itself is withstanding a long time listening to music. If we talk about negative responses, then it is possible to note the modest power that this JBL column is endowed. Bluetooth, in turn, provides stable bundle with others. mobile devicesto which there are no complaints.

Reviews of the model JBL Pulse

This system has a higher power supply, which allows it to handle it better. a full range of Frequency. The rest of the model causes almost the same reviews as the Charge version. The owners point to the comfort in circulation, the ergonomic form of the case and a number of functional additions. By the way, portable speaker JBL Pulse works through special application iPhone thanks to which were expanded communication capabilities Acoustics. But there is some complaints to this model. The main one relates to a modest configuration. So, compared with some models of the same line, the modification of Pulse is deprived of the cable to connect the headset of a 3.5 mm format.

Reviews of the model JBL Clip

Rather unusual and, rather, the utilitarian version of the portable acoustics from the manufacturer JBL, calculated on an unzipping listener. The model has a capacity of 3.5 W, which causes numerous questions to the quality of sound. True, the possibilities of playback in this case are caused by monocanal playback, so initially it is necessary to understand the value of the basic abilities of the CLIP system. On her background, of course, the JBL Charge portable column looks more profitable, but it is more expensive. Despite this, users still do not recommend refuse to consider this option, since it is also implemented by the same wireless communication capabilities. In terms of assembly quality, there are also no criticism - a durable, small and ergonomic case causes only positive impressions among the owners of the device.

Reviews about the JBL GO model

Another variation of mobile and at the same time of the budget device from JBL. It should be noted that this system does not differ high powerBut, according to users, it gives a surround sound with a good stock. But there are complaints about work wireless communication. In particular, distortion and failures are noted when connecting to third-party devices. It is clear that this reduces all the acoustic advantages that the JBL column possesses. The Bluetooth receiver many disappointed, but the rest of the system manifests itself well. For example, the model has a bright and stylish design that attracts attention. As for the reliability of the body, it is endowed with modern protection systems, so confidently copes with external negative impacts.

Question price

Two latest models The review can be acquired on average for 2-4 thousand rubles. Even against the background of budget counterparts from little-known manufacturers, this price tag is more than attractive. Another thing is that in these modifications there are not the best operational properties of products of this manufacturer. But the question is how much the JBL portable column is, perhaps, many will reheave many for another reason - for example, the Pulse version is available for 11-12 thousand. According to even those who are completely satisfied with this model in working qualities, the price tag is very high and not justifies the purchase.

How to choose an optimal model?

The company offers several series of portable speakers, but they all have a lot of similar features. This refers to the style of design, ergonomic characteristics, assembly quality, etc. The choice will have to do on the criteria of sound and form factor. If you need a JBL portable column for listening "on the go", that is, it makes sense to stay on budget versionsThat is cheap, but at the same time guarantee reliability and durability. For music alone, the Pulse and Charge models are suitable, and the second option provides quite good quality, but it is twice as cheaper. The choice is also individual, but here it is necessary to count on the conditions of operation. A cylinder column will be a universal option, and if it is planned to use the model of the house, it is necessary to prefer the GO in the classical design of the structure.

Conclusion

Low sound quality in portable speakers was previously due to small size speakers. Actually, this problem is not doing anywhere, and still developers of acoustics have to be labby between the quality of reproduction and mobility of the device. The company continues to demonstrate success in search of this balance, but at the same time successfully solves another problem - signal broadcast via the JBL wireless module. The portable column, the bluetooth receiver of which provides high-quality sound - this is a big rarity, but in this case, users mark the organic combination of portability and implementing wireless communication. Of course, about full comparison abilities Bluetooth and high-quality acoustic cables do not go, but the difference between them is reduced. This is worth adding both improvements that expand the universality of portable systems. For example, the CHARGE model in newest versions It is capable of simultaneously connecting to three devices via a wireless module channel.

JBL Charge Motherboards Replacement

This guide focuses on replacing a damaged motherboard to correct multiple functional problems.

Extraction of the motherboard will allow access to most internal components.

Chassis steps: 7

Motherboards steps: 4

Instruments

Metal spudger buy

Phillips # 1 screwdriver to buy

Spudger buy

Buy these spare parts and tools

Related spare parts

JBL Charge Motherboards

Formats: pdfxml)

Step 1 - Case

Image 1/3: Use Jimmy or Metal Spudger on each corner to separate the upholstery from the device.

Make sure the device is turned off before starting.

Use Jimmy or Metal Spudger on each corner to separate the upholstery from the device.

Image 1/2: Remove the battery cover and set it aside.

Use PH1 screwdriver to remove five 6 mm Phillips screws from the battery compartment cover.

Remove the battery cover and install it to the side.

Image 1/2: Be careful not to pierce the battery or damage the wire of the battery under liquid tape.

Use SPUDGER to remove most of the fluid isolent from the battery and the battery compartment.

Be careful not to pierce the battery or damage the battery wire under liquid tape.

Image 1/2: Raise the battery just enough to remove 16mm screw under it.

Use a metal spudger to snatch the edge of the battery from the device.

Raise the battery only enough to remove 16mm screw under it.

Battery lift too far leads to damage to the wire battery.

Image 1/2:

Remove the remaining four phillips screws 16 mm from a white plastic housing with PH1.

Image 1/2: Move the metal spudger along these seams to separate the housing back from the rest of the speaker system.

Start in the corner where the housing and side are found. Use a pointed metal spudger to pry apart from each other holds these seams together.

Insert the metal spudger along these seams to separate the housing back from the rest of the speaker system.

Image 1/2: Separate two pieces of casing.

After the device works, disconnect the three white connectors from the motherboard.

Separate two pieces of casing.

Step 8 - Motherboards

Image 1/1:

Use PH1 screwdriver to remove 9mm Phillips screw in the corner of the motherboard.

Image 1/2: if motherboard It will not move from the place, make sure that the square component at the bottom of the motherboard clears the edge of the speaker.

Remove the motherboard from the housing by lifting the corner of the board from the device.

If the motherboard does not move from the place, make sure that the square component at the bottom of the motherboard clears the edges of the speaker.

During the re-assembly, make sure that the motherboard is fully installed and does not stick up by its original position, as this may damage the motherboard.

Image 1/1:

Disconnect the two white connector from the bottom of the motherboard.

Image 1/2: Throw the ribbon cable from the connector using the blue tongue.

Pull down the black clamp holding a ribbon cable in place.

Stretch the ribbon cable from the connector using the blue tongue.

Remove system fee From the device.

To re-assemble the device, follow the instructions in the reverse order.

2 comments

Now, how to fix water damage Methods for generalized damage to water troubleshooting and recovery.

In any situation associated with immersion in water or splashing an electronic device in any liquid, the first step must disable any power source as soon as possible.

Pay attention to your personal security primarily! Be careful when you turn off any device from the current of the household or any other source. If you are standing in water or your clothes wet, please remove yourself from any potential danger of lesion electric shockBefore even thinking about obtaining a submerged or impregnated electronic device.

If the electronic device is still immersed and connected to external source Nutrition, find safe method Disconnect it. If possible is found circuit breaker Or switch for this source of energy. Be careful if you decide to remove the plug or the power adapter from the outlet that was not turned off.

Getting a submerged or impregnated electronic device that contains the battery presents its own dangers. A closed battery may be fire and / or chemical danger. If you see or feel warm, smoke, steam, boiling, convex, or avoid melting the processing of an electronic device.

If the device is still turned on, turn it off.

Rotate and shake the device to try to allow any liquid drain.

If possible, remove the battery.

If possible, disassemble the device to allow any remaining liquid to drain and start cleaning internal components. This is especially important in acidic liquids, such as fruit juice or alkaline liquids, such as water for linen.

If you are not sure about disassembling the device, you can try to dry it, bury it into a raw rice container for several days. In some cases, rice will successfully pull the remaining fluid. Changing the orientation of the device from time to time in the rice bath to give a liquid every chance to drain. Avoid using salt, sugar or flour. Disassembling and cleaning the device is always the best way to prevent corrosion, but if the device has not been immersed, this drying in some cases can be enough to prevent further damage. Note: Some tests show that the drying can be more efficient than rice method, especially in areas with low relative humidity. (A source)

Cleaning board

Fully disassemble the device, removing all cables and opening all connectors. In order to outset any remaining fluid around or under any components of the logic board, immerse it completely in the right size of the container filled with isopropyl alcohol. Ideally use a concentration of 90% or more affordable in a pharmacy or pharmacy. You can use distilled or deionized water as an alternative liquid cleaning, although it will take longer to dry. Avoid solvents such as ketone, acetone, or ligroin.

Use a toothbrush, a small brushes or other soft brush to clear the logic board of any debris or deposits from the violating fluid. Be careful how you clean up not to damage or accidentally knocking up logic board components. Pay special attention to the connectors and ends of ribbon cables to prevent corrosion of their contact surfaces.

After you make sure that the logic is a blank and corrosion-free fee you can use a hairdryer at its cold place and dry a logical fee. Alternatively, the logical board may be placed under desktop lampTo gently warm and dry the cleaning fluid.

When the components are dry, check the cable lugs and connectors again for the presence of signs of corrosion or garbage.

Build device C. new battery Or the one you are confident is in good working condition. If the device immersed quite likely that you need new battery. Lithium and other types rechargeable batteries Do not tolerate submersion well. Again, any sign boiling, convex, melting, or a color change on the battery indicates that it is a toast. Dispose it only on the utilization of batteries.

After you have collected a device, real damage assessment work begins. Look at what works and replace parts in an organized order, and not all at once. The likely order of refusal to a smaller electronic device is usually:

battery

LCD display

Logic fee

pH of common liquids

A somewhat less than 7 indicates the acidic solution, while the number above 7 indicates an alkaline solution. Both cases are bad for electronic components. Knowing fluid pH can help give you an idea of \u200b\u200bhow serious damage is.

Pure water neutral pH \u003d 7.0

Blood \u003d 7.4.

Gastric juice \u003d 0.7

Pancreatic juice \u003d 8.1

Spinal fluid \u003d 7.3

Saliva \u003d 7.0

Wheat beer \u003d 3.3 - 3.7

Light beer \u003d 4.4 - 4.7

Nonfermented beer \u003d 5.5

Lemon juice \u003d 2.3

Bleach \u003d from 12 to 12.6

Sea water i.e. Saltuter \u003d about 8.2

Adjustable pool water \u003d 7.2 - 7.8 (source)

Hello respected gentlemen, My name is Paul, I am from the Netherlands. I want to share my project independent manufacture enclosures. Dynamics I acquired in the Netherlands, Germany and Austria.

Original drawing:

Specially made the nozzle for cutting circles:

The material appeared. There are not bad tools in stock, but it is only half of the work:

My garage, it has free space, but it is filled quickly:

I used MDF 30 mm thick and 5x60 mm screws. First I collected the side, upper and low panels, and glued them with glue. To give the correct rectangle form inside, put a piece of panel:

The next step I collected at the bottom (from the outside) a rectangle that will be legs of the AU. To do this, I used 40x40 mm bars. Bottom I will not cover veneer, but just paint black:

That's what I collected on the components. 2235H 100% from Germany, 2123h or 2122h from Austria, 2425J + Rouger from Beyma. Two different Supervitra 2405n from the Netherlands. Appearance Some speakers were in poor condition, I had to work with them a little:

The next step was to cut holes before which once again made sure that everything in their places. Mounting kit bought on eBay:

Made a sample under the dynamics:

Bought a plastic tube with a diameter of 315 and a length of 600 mm for the manufacture of boxing under Midbas:

Inside the speakers planted on glue and screws of stiffness ribs on all inner walls, as well as additionally for mounting the rear panel:

Under the magnetic system of the horn, the dynamics cut out the panel, which is glued to the struts:

To protect against moisture, the inner part of the case I covered with a primer. The front panel from the outside and from the inside pre-covered in a blue, resembling the branded color of acoustics JBL:

Embedded to the manufacture of the back panel for speakers:

Now it is necessary to finally determine with the choice of the front panel color. RAL5007 is more similar to 43xx series, but I had a feeling that the branded blue was somewhere between RAL5007, RAL5012 and RAL5015. RAL5007 is too violet. RAL5012 is too light. RAL5015 is too blue.

So I started mixing and choosing something between the options received. I chose the three "best" options:

№4: 1/2-5007, 1/4-5012 and 1/4-5015 - Even too blue;

№5: 1/2-5007 and 1 / 2-5012 - too light;

№7: 3/4-5007, 1/8-5012 and 1/8-5015 - too violet.

As a result, I narrowed a triangle, and chose between №13: 0.6 × 5007, 0.3 × 5012 and 0.1 × 5015. Such a choice may be controversial, but I like the color:

Production of phase inverters and their internal colors in the already selected color JBL:

The inclusion scheme and photo technique that will be used with acoustics. FROM pre-amplifier The signal goes to the active crossover, which divides the signal into two bands. After that, each strip is enhanced by a separate amplifier, the signal from the amplifier goes directly, and on the Foreign Ministry, Sch and HF - through a passive filter:

Filters made in separate enclosures for each channel:

Wireless Device and Repair

One once for the repair I was brought by a wireless bluetooth column. Speed \u200b\u200bshe had a decent appearance. On the box it was written by JBL Charge 3. Googled. From that yes! Column for 8 thousand. Cool. But, as it began to understand with her, then the doubt immediately appeared that it was really JBL Charge 3.

He took off the protective casing and began to be surprised at how Syo's creation was made. Compared with the original on the pictures and realized that I had a cheap Chinese fake, a replica, a copy.

Compare with the original This creation makes no sense, the difference is colossal. Many want to buy a Bluetooth-column JBL Charge 3 on Aliexpress cheaper and fall on a copy, a replica. For example, this can be purchased. Costs about 3000 rubles. Apparently, such a copy came to repair.

Well, the original Wireless column JBL Charge 3 is sold on Ali in the Tmall store. Its price is not much different from the one on which large network shops are made. So, if you want to buy the original, then do not chase at low price, the original costs 7-8 thousand rubles.

To begin, I want to say that one of the most running breaks of such devices is the broken MicroUSB connector. It is with such a breakdown for the first time I brought this wireless column. But, after a few months later, it was connected to charging a bad USB cord, after which he jumped, smoking and after that the column stopped turning on.

For a start, we take a look, from which "kit" is collected by our fearing handicraft. The bluetooth column disassets easily. First removes the decorative and protective casing.

All major electronics are mounted on a small board, which connects to the keypad, speakers, as well as a power source - lithium accumulator Format 18650.

On the main board only a few chips. Chip AC1720AP11057-5A8. - These are brains of the device (microcontroller), which is built into a Bluetooth module. On the printed circuit board in the form of a broken line resembling meander, an antenna is performed.

If suddenly it happened that the microcontroller was failed, then the fee can be partially or completely replaced by an AC17xxap chip-based module, which a huge set is sold to Ali. Here is the link . It should be noted that they all have a different labeling, for example, AC1721AP10242-5A8, AC1716AP10234-5A8, AC1716AP10238-5A8. As I understand it, the chips differ only with support different versions Bluetooth (v2.1, v4.0, v4.1, v4.2).

First, we remove it to solder from the contacts of the element, and then, heating one of the sketches of the soldering iron, we remove the non-working transistor to the tweezers. Since the SOT-23 case is miniature, it quickly warms up with the conclusions. This makes it easier to disassemble the transistor.

After replaced by the burnt Mosfet Si2301 on AO3407, began to check the operation of the wireless column. At first it turned on and turned off, it was connected to the smartphone without any problems, losing tracks. But after a pair, the turn on / off again stopped turning on.

The most interesting thing was that when closing the conclusions of the stock source of the AO3407 transistor, the column was generally turned on and worked even after I cleaned the tweezers - blurred the conclusions of the drain and source. With the shutdown, there was also no problems, by pressing the "POWER" button, the column turned off.

While it was understood what the case was, noticed a cracked diode D2 with the S4 marking on the keypad board.

It is worth noting that the S4 label is applied to different models SMD diodes and them are easy to confuse. But, after quite a long search, I came to the conclusion that it is a SD103AW SD103AW Diode. It is sufficiently low, it has small sizes (SOD-123 / SOD-323 housing). Apparently applied in signaling circuits, has a small voltage drop on the transition (Low Forward Voltage Drop). I met such diodes on printed boards from portable MP3 players.

From the fluidized analysis of circuitry, the following logic of the operation of the scheme has been lined up when turned on.

Let me remind you:

P-channel mosfet transistors open a minus on the gate;

The semiconductor diode has one-sided conductivity.

This will be enough to understand the operation of the inclusion and off scheme. For clarity, I was not too lazy and granked a simple scheme.

When you press the "POWER" button, the MOSFET-transistor q2 shutter (AO3407, native Si2301) connects to minus via diode D2 and opens. Through the opened transistor Q2, the supply voltage is supplied to the entire electronic part of the circuit. The microcontroller opens bipolar transistor Q1 (marked J6, He is S9014), the collector of which is connected to the bracket Q2. Thus, even after the "Power" button is open, the Mosfet-transistor Q2 remains open and supplies power to the scheme.

DO2 diode, apparently, prevents the circuit with the output of the collector of the transistor Q1 for minus when we re-press the "POWER" button. Since Q1 is open and tested to the valve Q2, then in this mode diode D2 is turned on in the opposite direction and does not skip the current.

Turning off the wireless column is repeatedly pressing the "POWER" button. When it is pressed, the overall wire (it is minus) is connected via D4 diode with a bus control bus. So the microcontroller understands that the signal came off and closes the transistor Q1, and with it Q2. Completes its work.

I think now it is clear why, when closing the conclusions, the source-drain from the AO3407 transistor, the column turned on and continued to operate even when the conclusions are broken. The shutdown circuit was good and therefore the column normally turned off by pressing the "POWER" button.

Since the AO3407 transistor is more powerful than the native Si2301 and differs according to the characteristics, then the capacity of its shutter is also more. And once the shutter capacity is greater, then the charge current of this container when applying for a minus shutter, also more.

And, as we have already found out, the AO3407 shutter is connected with a minus through the button and diode D2. At the same time, a rather powerful charge current of the shutter capacitance flows through the dode D2. It is because of the fact that it is greater than in the case of the native Si2301, the diode D2 was simply burned due to exceeding the nominal current I F, which, judging by the documentation, is only 350 mA (for SD103AW).

To restore the correct switching on the column instead of the SD103AW diode was installed more powerful Diode Schottky B5819WS (marked SL.), which withstands the direct current (I f) in 1a. Its housing is the same as SD103AW. He took it from the board from the DVR.

After his replacement, the bluetooth column began to work as it should and no diodes no longer "crashed."

On this, my long story about the repair of the wireless column is complete. But, I would like to add it. It's no secret that wireless speakers Spearly fail the speakers. The reason is simple and associated with their intensive operation at the maximum volume.

Most often, such a parables suffer from the same cheap bluetooth columns, the power of the speakers of which is small and is a maximum of 2-3W. The original columns also do not bypass this trouble. Unlike cheap devices, more qualitative dynamics of which are 5-15W in them.

The portable and bluetooth columns are usually embedded with miniature speakers by 1.5-3 inches (inch). The replacement of the native can be found on Aliexpress, for example, in Aiyimatechnology, Aiyimaaudio and Ghxamp. Shops Verified, have good feedback. We select the speaker in power and sizes. If you wish, here you can find a decent replacement for the original speakers from Breats, JBL, Sony, Philips, smart speakers Google Home.