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Comparison Samsung The Premiere LSP9T vs Samsung The Premiere LSP7T

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Samsung The Premiere LSP9T
Samsung The Premiere LSP7T
Samsung The Premiere LSP9TSamsung The Premiere LSP7T
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Main functionhomehome
Operating system
Smart TV (proprietary system) /TIZEN/
Smart TV (proprietary system) /TIZEN/
Lamp and image
Lamp typeLaser-LEDLaser-LED
Service life20000 h20000 h
Brightness ANSI Lumens2200 lm2200 lm
Static contrast1 000:11 000:1
Dynamic contrast2 000 000:12 000 000:1
Projection system
TechnologyDLPDLP
Real resolution3840x2160 px3840x2160 px
Image format support16:9, 16:10, 4:316:9, 16:10, 4:3
HDR support
Colour enhancement
 /PurColor/
 /PurColor/
Projecting
Throw distance, min0.11 m0.19 m
Throw distance, max0.24 m0.42 m
Image size100 – 130 "97 – 163.5 "
Zoom and focusmotorizedmotorized
Auto keystone correction
Features
Features
DLNA support
voice control
voice assistant /Bixby, Amazon Alexa/
DLNA support
voice control
voice assistant /Bixby, Amazon Alexa/
Bluetoothv 4.2v 4.2
Wi-FiWi-Fi 5 (802.11ac)Wi-Fi 5 (802.11ac)
Hardware
USB 2.011
Number of speakers42
Subwoofer
 /2/
 /2/
Sound power40 W30 W
HDMI inputs33
Audio connectors
optical
optical
Service connectors
COM port (RS-232)
LAN (RJ-45)
COM port (RS-232)
LAN (RJ-45)
General
Noise level (nominal)32 dB32 dB
Power sourcemainsmains
Power consumption320 W320 W
Size (HxWxD)141x550x367 mm133x532x342 mm
Weight11.5 kg
Color
Added to E-Catalogmarch 2021march 2021

Throw distance, min

The closest distance to the screen that the projector can be used on. Typically, this is the minimum distance at which the image from the projector remains in focus.

This parameter is especially important if the device is to be placed at a small distance from the screen (for example, in a cramped room). Some modern projectors are able to work normally at a distance of 10 – 20 cm. Also note that the throw distances are determined primarily by the lens, and if the initial range of these distances does not suit you, perhaps the situation can be solved by replacing the optics.

Throw distance, max

The farthest distance from the screen that the projector can be used on. This is the maximum distance at which the image remains in focus and maintains acceptable brightness — at least enough for viewing in a darkened room on a high-quality screen.

It is necessary to choose according to this parameter taking into account the expected operating conditions and the distances to be dealt with. At the same time, it's ok to have a certain margin for the maximum distance — since, as already mentioned, it is usually indicated for an perfect screen and a darkened room, and such conditions are not always available. Also note that although the throw distances depend on the lens, not every projector with an interchangeable lens allows the installation of more "long-range" optics than the standard one — the device may simply not have enough brightness for an increased distance.

Image size

Size of the image projected by the projector. Usually, it is indicated as a range — from the smallest, at the minimum throw distance, to the largest, at the maximum. About throw distances, see above; here it is worth saying that the choice of diagonal size depends both on the distance between the screen and the audience, and on the format of the projector. For example, to watch a video, the best option is the situation when the distance from the viewer to the image corresponds to 3-4 diagonals, and a relatively large picture can be useful for working with presentations. More detailed recommendations for different situations can be found in special sources; here we only recall that the image must fit on the screen used with the projector.

Number of speakers

The number of built-in speakers provided in the projector.

The presence of speakers in itself allows user to play sound (for example, accompaniment to the displayed video) without speakers and other additional equipment. However the quality of such sound usually turns out to be low; for a clear sound, you still need external sound system. However, in some cases this is quite enough; in addition, there are projectors with advanced built-in speakers.

The number of speakers can be one or two. In the first case, we are talking only about the playback of monophonic sound, without any surround effect. And two speakers already represent a stereo system. The subwoofer is considered a separate function and does not affect the number of speakers in this paragraph.

Sound power

The nominal power of the sound system installed in the projector.

The higher this power, the louder the sound the device can produce, the better it will be heard in a large room and/or noisy environment. At the same time, it is worth noting two nuances. First, built-in speakers are usually made relatively low-power — otherwise they would take up too much space. Secondly, most modern projectors allow the connection of external sound system (see "Audio connectors"), more powerful than the built-in one. So it makes sense to pay attention to this indicator if you initially plan to use the "native" sound of the projector. Detailed recommendations on the required power for certain conditions can be found in special sources.
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