Appearance and characteristics
Interfaces, 40L3453DB is equipped with three HDMI interfaces, which is a lot more than the same price products. In addition, the 40L3453DB also provides common connection methods such as USB, LAN, and Wi-Fi.
USB and network connectivity allows us to play local, or DLNA, video, photos, and music in any way, while consumers can choose Toshiba's online multimedia platform to enjoy streaming content. Toshiba’s online platform is called Cloud TV. It is not complicated to use at a glance. Users can choose to include Netflix, YouTube, BBC News, BBC iPlayer and other content directly on the main interface.
However, Cloud TV does not support ITV Player, Demand 5 and 4OD, LoveFilm, Amazon Instant and other services. In addition, this platform does not support richer content such as games and social networking. From this we can also see that the positioning of the 40L3453DB is a TV that is purely used to enjoy video content.
Toshiba not only counters the competition by providing rich online content, but also features a 1080p full HD display panel and a 200Hz screen refresh rate that provides smooth dynamic response and stability. In addition, the very rare Freeview HD controller in the same level of products also appeared in the 40L3453DB body. Together with the mainstream 25000:1 contrast and dynamic contrast system, the 40L3453DB hides a strong “heart†under the low-profile appearance.
However, the 40L3453DB does not provide image calibration. Both are common tools. However, we found that the process of screen noise reduction can be accomplished through the 40L3453DB setup menu. Through various dynamic contrast engines and RGB color adjustments, more screen effects can be obtained.
In addition, the 40-inch TV is usually best suited for playing games, while the 40L3453DB is also able to meet the needs of players at the same time with high cost performance. The picture delay of the 40L3453DB is only 33ms, which can already minimize the influence of the delay on the game and meet the needs of most mainstream players.
Picture quality
Ordinary consumers must not have too high expectations for 40L3453DB entry-level TV, but 40L3453DB proves that they have done well enough in effect. Usually the most important indicator of LCD TVs is the level of black level performance, and this is the most “blightless†part of entry-level products. However, the 40L3453DB has surprising performance in this area.
First of all, the black level of the 40L3453DB is satisfying to me, and it is within the gray range that I can accept. To know that other similar products in this area are not very good performance, and 40L3453DB has a big gap.
In addition, in the dark scene, the details of the picture can also be fully displayed, and the level of the picture is also fully demonstrated (although there is still a certain gap compared to the high-end models, but 40L3453DB has been seen from the perspective of price Do your best. Although the 40L3453DB also has the appearance of light leakage from the screen, at least it seems that it is evenly distributed and there is no phenomenon that the part is particularly bright. Compared with the same price of the product, 40L3453DB will not cause the loss of details of the screen because of too much contrast, and also reached a draw level in dynamic effect adjustment.
Many low-cost TVs are unconvincing in the color of the picture, as the lack of performance in the black position directly affects the presentation of the remaining colors. Therefore, given that the 40L3453DB has a good black level, it also exceeds our expectations for the realization of color on the screen. The color of the 40L3453DB's screen is quite realistic. Even in the element of the skin, the 40L3453DB can be rendered relatively realistically, and is much stronger than its competitors.
At the same time, we will also enjoy 40L3453DB more dynamic range of color changes, although some adjustments in the color of the skin will sometimes have some impact, but still take into account the price, which is already a very good performance.
The 40L3453DB is also quite convincing on this point. Although it still suffers a loss of clarity, it does a good job of avoiding smearing and afterimages, and it has not received any serious interference. Although the screen sometimes shows some jitter, it is not obvious and does not appear often.
This excellent performance in the dynamic picture directly affects the effect of the 40L3453DB playing high-definition video. We use the 40L3453DB to enjoy 1080p movies without any problems. If we combine reasonable settings, we can easily enjoy the details of texture and satisfying clarity in the picture.
The screen of 40L3453DB is clear and natural, and there is no problem of blurred edges of objects, which is related to the backlight mode used by 40L3453DB. The 40L3453DB can basically meet the needs of any living room, bedroom or study room, but the performance of 40L3453DB in brightness is not so good. If your living room or bedroom is very bright during the day, then the 40L3453DB's body will sometimes look very dirty, although it has reached its maximum value in the brightness setting.
Another problem is that the viewing angle of the 40L3453DB is also relatively common. If you view it at a relatively large angle, you will lose more than just the frontal view, regardless of color or contrast.
Ease of use
The 40L3453DB's user interface is very friendly, especially the layout of the Cloud TV is simple and clear, all operations at a glance. However, depending on the configuration of the product itself, the menu response speed seems to be relatively normal. This problem is particularly evident when we operate Cloud TV. However, after all, as a cheap TV, there is not much budget to match the 40L3453DB with a higher-performance processor. Since other aspects of the 40L3453DB have done quite well, I believe most users still have sufficient patience to slowly adapt to the 40L3453DB's operating speed.
The sound effect takes into account the price of the 40L3453DB, and there is no special highlight in the sound effect. The vibration amplitude of the horn is very limited. However, if you are only used to watch news and variety shows, it seems that the 40L3453DB is still acceptable in terms of sound clarity. If you watch a movie, the sound of gunshots, explosions, shouts, and engines is clear but not organized, the overall effect is thin, and there is almost no bass.
Reviewing the price/performance ratio, in the 400-pound-class market, few products can be compared with the 40L3453DB in terms of picture quality and effects. Of course, if you are willing to spend more, there are still many better options.
Summary Toshiba 40L3453DB positioning is actually a cheap small and medium-sized products, and there is no particular appearance in the place, can provide online streaming media video content is not particularly comprehensive. However, with USB support, these defects can be compensated to a certain extent. Another 200Hz refresh rate is sufficient to deal with 1080p Full HD video. The connectivity 40L3453DB is also quite kind, a single HDMI interface has been a lot, and usually only the same price product will only provide two.
And what surprises us most is undoubtedly the performance of the picture. Regardless of the black level, color reduction, light leakage control, 40L3453DB has reached the same effect of similar products. Although not a first-line brand in the TV market, Toshiba gave us no small surprise in the 40L3453DB.
If you have a limited budget and no special requirements for appearance, then spend 400 pounds (about 4,130 yuan) to buy a 40L3453DB worth of money for your living room or bedroom. You will find that 40L3453DB can really meet all your requirements in the most basic picture quality performance.
advantage:
Attractive price
Rich multimedia support;
Excellent picture effect;
Ultra low input delay.
insufficient:
The design is mediocre;
Online service is mediocre;
General viewing angle;
The screen brightness is limited.
During the mid 1970s, researchers developed a maintenance-free lead-acid Battery that can operate in any position. The liquid electrolyte is gelled into moistened separators and the enclosure is sealed. Safety valves allow venting during charge, discharge and atmospheric pressure changes.
Driven by different market needs, two lead-acid systems emerged: The small sealed lead-acid (SLA), also known under the brand name of Gelcell, and the larger Valve-regulated-lead-acid (VRLA). Both batteries are similar. Engineers may argue that the word 'sealed lead-acid' is a misnomer because no rechargeable battery can be totally sealed.
Unlike the flooded lead-acid battery, both SLA and VRLA are designed with a low over-voltage potential to prohibit the battery from reaching its gas-generating potential during charge because excess charging would cause gassing and water depletion. Consequently, these batteries can never be charged to their full potential. To reduce dry-out, sealed lead-acid batteries use lead-calcium instead of the lead-antimony.
The optimum operating temperature for the lead-acid battery is 25°C (77°F). Elevated temperature reduces longevity. As a guideline, every 8°C (15°F) rise in temperature cuts the battery life in half. A VRLA, which would last for 10 years at 25°C (77°F), would only be good for 5 years if operated at 33°C (92°F). The same battery would desist after 2½ years if kept at a constant desert temperature of 41°C (106°F).
The sealed lead-acid battery is rated at a 5-hour (0.2) and 20-hour (0.05C) discharge. Longer discharge times produce higher capacity readings because of lower losses. The lead-acid performs well on high load currents.
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