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Other than the thin bezel and the extra HDMI, what's the difference (if any) between the Toshiba 540 and 550 (52 inch)? Thanks.
 

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ask and u shall receive .........


xv540 ....


TV Features

HDTV Tuner: The TV has built-in over-the-air HDTV (ATSC) and Digital Cable (QAM) tuners, so you don't need a separate set-top box to receive and decode over-the-air HDTV/SDTV or unencrypted Digital Cable signals.


Full HD Resolution: The Toshiba LCD TV displays all inputs at a resolution of 1080p (1920 x 1080). The HDMI inputs will accept 1080p (24Hz/60Hz), 1080i, 720p, 480p, 480i, VGA, SVGA, XGA, WXGA and SXGA signals while the component video inputs will accept 1080i, 720p, 480p and 480i.


Cinespeed 10-Bit LCD Panel: Toshiba's 10-bit LCD panel provides 64 times more colors than a standard 8-bit panel, offering smoother transitions between color changes and during subtle shade transitions. Toshiba's REGZA Premium LCD Hi-Speed Cinespeed panels offer a refresh rate of 60 Hz and fast response times of 8ms or faster for an ultra sharp picture, especially when displaying fast-moving action scenes, and demanding video games. A wide 176-degree viewing angle ensures that you can enjoy this TV from any seat in your room.


PixelPure 4G 14-Bit Digital Video Processing: Toshiba's 4th generation PixelPure video processing system uses a 14-bit video DAC and constantly monitors changes in signal quality, content, and movement to enhance sharpness, contrast, and color reproduction. This advanced third-generation digital video processing system runs at a fast 333Mhz and is capable of producing 16,384 levels of gradation (16 times greater than a standard 8-bit processor) for a smooth, natural-looking picture without image banding.


ClearFrame 120Hz Anti-Blur Technology: This advanced system virtually eliminates motion blur without decreasing image brightness, or adding flicker. Images are now crisp and clear regardless of image motion. ClearFrame doubles the displayed frame rate to 120 frames per second or 120 Hz. ClearFrame utilizes superior Motion Vector Frame Interpolation (MVFI) technology. Utilizing the power of the PixelPure processor, MVFI creates new frames, inserting them between the original frames.


DynaLight Dynamic Back-Light Control: Toshiba's DynaLight Technology monitors the brightness level of each video frame, and automatically adjusts the backlight intensity based on the image content. Precise signal analysis offers 256 levels of backlight intensity. This creates dynamic contrast up to 5X that of the original panel contrast, resulting in a deeper black level that increases detail and depth, even in low light environments.


ColorBurst Wide Color Gamut CCFL: ColorBurst expands the number of available colors and improves the color accuracy. This significantly improves both color purity and color saturation. The combination of ColorBurst and superior video processing creates colors that are more vibrant, more natural, and more enjoyable.


CableClear DNR: Designed to optimize poor NTSC signals from antenna or cable, this noise reduction system eliminates video noise ("snow") for a clean crisp image. This system detects the quality of the incoming video signal, and automatically applies the needed amount of video optimization.


HDMI Capabilities: The Toshiba LCD television offers the following HDMI capabilities through its three rear-panel HDMI inputs.


Lip-Sync Latency: This feature activates and auto audio/video display timing adjustment function that allows HDMI source devices to accurately perform synchronization automatically.

Deep Color: This HDMI feature allows the HDMI source to increase the available color bits within the boundaries defined by the RGB or YCbCr color space system.

x.v.Color: The x.v.Color feature expands the acceptable color range (limits) in HDMI signals and allows fro sending of wider color signals from HDMI.

REGZA-LINK: You can control the basic functions of connected audio/video devices using the TV's remote control if you connect a REGZA-LINK compatible audio receiver or playback device. Available basic functions include - Play, Stop, Pause, Skip, Fast Forward, Rewind and Menu navigation (These function depend on the devices connected). REGZA-LINK also allows for the ability of automatic input switching and power on/off for connected components.

Picture Size:When viewing a source, you can choose one of the following picture sizes:


Natural:image is displayed close to its originally formatted proportion

Theater Wide 1: the picture is non-uniformly enlarged; the center of the picture remains close to its true proportion, but the left and right edges are stretched wider to fill the screen, used primarily with a 4:3 source

Theater Wide 2: entire picture is uniformly enlarged, used primarily with a widescreen source

Theater Wide 3
icture is non-uniformly enlarged; the picture is stretched wider to fill the width of the screen and stretched slightly taller

Full: mainly designed for receiving a squeezed 4:3 signal (a 16:9 [480i, 480p] programs squeezed into a 4:3 transmission), the picture is stretched wider to fill the screen, but not taller, none of the picture is hidden

4:3 HD
rovides a 4:3 aspect ratio of a 720p, 1080i or 1080p signal; sidebars fill the empty vertical spaces while not distorting the picture from its original size

Native: when receiving a 720p, 1080i or 1080p signal program, Native Mode restores the size of the picture by the 3-5% that is generally lost during the normal over-scanning that occurs on traditional sets. It also avoids unnecessary scaling of HD signals that can reduce overall image resolution and picture quality.

Dot-by-Dot: non-scaling display for VGA, SVGA, XGA, WXGA and SXGA sources only

TheaterWide Scrolling: You can set separate scroll settings for the Theater Wide 2 and TheaterWide 3 modes for each input. You can adjust the scroll of the picture up and down as needed form -10 to +20.


Auto Aspect Ratio:The Auto Aspect Ratio feature will automatically select the picture size when one of the following inputs sources is received - a 480i, 480p, 720p, 1080 signal from the ANT/Cable input; a 480i signal from the Video 1 or 2 inputs; a 480i, 480p, 720p, or 1080i signal for the Component Video 1 or 2 inputs; and a 480i, 480p, 720p, 1080i, 1080p, or VGA (60/72/75Hz) signal from any of the HDMI inputs. The aspect ratio will automatically adjust as follows.


Aspect Ratio Of Signal Source Automatic Aspect Size Selected

4:3 normal Natural (with sidebars)

4:3 letter box TheaterWide 2

16:9 full Full


Note: When the TV cannot identify the aspect ratio of the signal source, the aspect ratio of the TV will be adjusted to your "Picture Size" selection in the TV's menu. The auto aspect ratio feature is not applicable to the PC input.


Cinema Mode: When you view a DVD (3:2 pulldown processed) from a DVD player connected to the Video 1/2, Component Video 1/2, or any of the HDMI inputs on the TV, smoother motion can be obtained by setting the Cinema Mode to Film from Video.


Film Stabilization: This feature helps to eliminate video shaking that can occur during Cinema Mode processing.


Picture Modes: You can select one of the following picture modes for each input:


Sports: bright and dynamic picture

Standard: standard picture setting

Movie: lower contrast for a darkened room

PC: designed for viewing of tables/documents from a PC

Preference: allows you to adjust and store contrast, back light, DynaLight, brightness, color, tint, and sharpness

Dynamic Contrast:When dynamic contrast is set to Low, Middle or High, the TV will detect when changes in picture quality that affect the appearance of your contrast settings and adjust the video automatically.


Color Temperature: You can change the quality of the picture by selecting from three preset color temperatures - Cool (bluish), Medium (neutral), or Warm (reddish). You can also adjust the levels of greens and blues in each preset temperature.


ColorMaster:The ColorMaster feature adjusts hue, saturation, and color brightness of six different colors (Red, Green, Blue, Yellow, Magenta, Cyan) to create picture quality your way. This provides deep, natural colors for increased depth and realism.


Color Pallet Adjustment: When the color palette adjustment feature is selected, a list of base colors will be displayed. You can then select the base colors you want to adjust and fine tune the Hue, Saturation and Brightness of those colors.


MPEG Noise Reduction: The MPEG noise reduction feature allows you to reduce visible interference caused by MPEG compression. You can choose High, Medium, Low, or Off.


Static Gamma Adjustment: The Static Gamma feature allows you to adjust the levels of black in the picture. The adjustment range is with +/-5 from center.


TheaterLock: The TheaterLock feature allows you to lock all items that affect the picture mode setting.


Game Mode: When playing a video game requiring split-second timing (high-action games, music creation, etc.), the Game Mode shortens the frame delays between the on-screen display and the input from the controller. This feature is more effective for 480i and 1080i input signals.


Note: The Game Mode can only be used on the Video 1, Video 2, Component Video 1, Component Video 2, HDMI or PC inputs.


Channel Browser:The Channel Browser allows you to browse and view channels by storing your recently viewed channels in channel history. You can surf back to channels you viewed prior to your current channel, and surf forward from previous channels up to your current channel. Up to 32 previously viewed channels can be stored in history. You can set a Home source for an Ant 1 channel or TV input.


Favorite Browser:Within the Channel Browser you can preview preset Favorite Channels via thumbnails along the bottom of the screen.


Channel Return: The Channel Return feature allows you to switch between two channels without entering an actual channel number each time


SurfLock:The SurfLock feature temporarily memorizes one channel under the Channel Return button, so you can return to that channel quickly from any other channel.


Channel Label: A list of common channel labels (logos) for various channels such as ABC, CBS, etc. are programmed into the TV. You are able to view and assign these logos to your incoming stations. If the desired channel label is not provided, you are able to manually enter and edit labels using the TV's on-screen keyboard.


Input Label:You can label each input according to the connected source. The preset list of labels includes: Cable, DTV, Satellite/DSS, VCR, Laser Disc, DVD, HD DVD, Audio Receiver, Compact Disc, Video Recorder, Game Console, Hide (so you don't have to toggle through an input you're not using), and the default label is blank.


Note:The PC input can only use the default "Blank" or "Hide" label.


Auto Input Feature: This feature allows you to change TV inputs using the Mode Select buttons (TV, Cable/Sat, HD DVD, DVD, VCR/PVR) on the supplied IR remote control. Once an input has been set for specific Mode Select button, the TV will automatically switch to the input when you press and hold the Mode Select button for two seconds.


Closed Captions: The TVs closed caption mode has two options.


Captions: an on-screen display of the dialog, narration, and sound effects of TV programs and video that are closed captioned

Text: an on-screen display of information not related tot the current program, such as weather or stock data when provide by individual stations

Digital CC: You can customize the closed caption display characteristics by changing the background color, opacity, text size, type, edge and color.


SoundStrip Speaker System:The SoundStrip Speaker System utilizes a thin-line speaker design with enhanced dynamic range. This eliminates the big round speakers, without losing any of the big home theater sound.


Stable Sound:When the signal source is changed, this feature limits the highest volume level to prevent extreme changes in volume.


Bass And Treble: You can adjust the audio quality by adjusting the TV's bass, treble and balance.


Advanced Audio Settings: The Toshiba LCD TV offer three advanced audio settings to provide a fuller, richer and wider sound effect. You can select from the following.


Stereo Extension: activates a surround sound effect which allows for a wider sound-stage

Voice Enhancement:emphasizes the vocals of the program

Dynamic Bass Boost: provides a deeper, richer bass

Dolby Digital Dynamic Range Control:This dynamic range control feature causes the ATSC dynamic range to be further compressed, allowing you to switch from ATSC to analog broadcast at the same dynamic range.


Two-level Mute: The TV mutes the volume half-way when the Mute button is pressed once on the remote; when pressed a second time the TV will mute the volume completely and when pressed a third time the volume will resume as normal.


Lock System: The TV's Lock Menu includes ratings blocking, channel blocking, input locking and a side panel control lock which are all protected by the same user customized 4 digit password.


GameTimer: You can use the GameTimer function to se a time limit for playing a video game from 30 to 120 minutes. When the GameTimer expires, the TV enters Input Lock mode and locks out the input source for the video game device.


Sleep Timer:The sleep timer switches the television off after a specified amount of time. The sleep timer can be adjusted from 10 minutes to 3 hours in 10-minute increments.


Power-On Mode: You can select between a Power-Saving or Fast mode.


Power-Saving:keeps power consumption in standby mode to below 3W; as a result, it takes a bit longer to turn on

Fast Mode: increases power consumption in standby mode to allow the TV to turn on quicker; while in Fast mode the yellow LED on the TV front panel will be lit. (Crutchfield test results: ? watts)

Last Mode Memory:If the power is cut off while you are viewing the TV, the Last Mode Memory feature automatically turns on the TV when the power is re-supplied.


Note: You should unplug the TV's power cord if it is probable that you will be away from the TV for an extended period of time after the power is restored.


Auto Power Off: In ANT mode the TV will automatically turn itself off after approximately 15 minutes if it is turned to a vacant channel or a station that completes it broadcast for the day.


PC Compatible

PC Connection: You can view the image from your PC on the TV screen by the unit's 15-pin D-sub RGB input or HDMI 1 input. The PC input can accept VGA, SVGA, XGA, WXGA and SXGA signal formats.


PC Settings: When your PC is connected to the TV's 15-pin D-sub RGB terminal, you can use the TV's PC Settings features to make adjustments to the image such as picture horizontal and vertical position, clock phase (helps reduce noise and sharpens picture) and sampling clock (helps reduce noise and minimize periodic vertical stripes on-screen).


PC Audio: This function allows you to output the sound from your PC through the TV's speakers via the PC stereo 3.5mm input on back of the TV.


Mounting Options

Pedestal Stand: The TV is shipped with the pedestal stand attached. The pedestal stand allows you to swivel the television left to right. The stand can be removed to wall-mount the television.


Wall Mounting: The TV has four threaded inserts on the back for use with an optional wall-mount bracket. The spacing of the mounting holes is VESA 400 x 200 (400mm horizontal x 200mm vertical), in accordance with the industry standards set by the Video Electronics Standards Association. The threaded inserts require 8mm machine screws (not supplied).


Remote Control

Multibrand Remote: The supplied remote is pre-programmed to operate this unit and a number of functions on many other brand components; including cable boxes, satellite receivers, DVD players, DVD-recorders, DVD/VCR combos, VCRs, PVRs, CD players, and audio receivers.


Inputs and Outputs Notes

4 HDMI Inputs: Three of the four HDMI inputs are found on the rear-panel of the television, while one HDMI input is located on the right-side panel of the TV. The four HDMI inputs consists of a single type-A connector HDMI jack. The HDMI jacks can accommodate a copy-protected digital connection (HDCP) from other devices (such as digital set-top boxes) that have compatible interfaces. The HDMI jacks are compliant with the E-EDID (Enhanced-Extended Display Identification) standards. If you want to connect a DVI-compatible device, you will need an HDMI-to-DVI adapter cable. Since DVI does not carry audio signals, a stereo audio 3.5mm input is provided for the HDMI 1 input. In addition to the HDMI-to-DVI adapter cable, you will also need a stereo audio 3.5mm cable. The HDMI 1 input can also be used to connect the TV to your PC along with the shared PC stereo RCA audio jacks.


Note: The HDMI jack will accept 1080p, 1080i, 720p, 480p, and 480i signals.


RGB/PC Input:This connection allows you to view the image of a personal computer on the TV screen. When connecting the PC to the TV, you will need a 15-pin D-sub RGB computer cable and a PC audio cable. The PC input shares the stereo audio 3.5mm input with the television's HDMI 1 input.


Component Video Inputs:The two ColorStream HD Component video inputs will accept 1080i, 720p, 480p, and 480i signals.


Digital Audio Output: An optical digital output is provided to allow you to connect the unit to a surround processor. The format can be set to Dolby Digital or PCM.


IR Out:You can use the TV's IR Out terminal (infrared pass-through) to remotely operate (through the TV) many infrared remote-controlled devices, such as Toshiba infrared remote controlled VCRs or DVD players, enclosed with an entertainment center or audio cabinet.






xf550 ..........


TV Features

HDTV Tuner:The TV has built-in over-the-air HDTV (ATSC) and Digital Cable (QAM) tuners, so you don't need a separate set-top box to receive and decode over-the-air HDTV/SDTV or unencrypted Digital Cable signals.


Cinespeed 10-Bit LCD Panel: Toshiba's 10-bit LCD panel provides 64 times more colors than a standard 8-bit panel, offering smoother transitions between color changes and during subtle shade transitions. The Cinespeed LCD panel has 8ms or less response speed necessary for cleaner high-action home theater images. A wide viewing angle ensures that you'll have the best seat in the house.


DynaLight Dynamic Back-Light Control: Toshiba's DynaLight Technology monitors the brightness level of each video frame, and automatically adjusts the backlight intensity based on the image content. Precise signal analysis offers 256 levels of backlight intensity. This creates dynamic contrast up to 5X that of the original panel contrast, resulting in a deeper black level that increases detail and depth, even in low light environments.


PixelPure 4G 14-Bit Digital Video Processing: Toshiba's 4th generation PixelPure video processing system uses a 14-bit video DAC and constantly monitors changes in signal quality, content, and movement to enhance sharpness, contrast, and color reproduction. This advanced third-generation digital video processing system runs at a fast 333Mhz and is capable of producing 16,384 levels of gradation (16 times greater than a standard 8-bit processor) for a smooth, natural-looking picture without image banding.


ClearFrame 120Hz Anti-Blur Technology: This advanced system virtually eliminates motion blur without decreasing image brightness, or adding flicker. Images are now crisp and clear regardless of image motion. ClearFrame doubles the displayed frame rate to 120 frames per second or 120 Hz. ClearFrame utilizes superior Motion Vector Frame Interpolation (MVFI) technology. Utilizing the power of the PixelPure processor, MVFI creates new frames, inserting them between the original frames.


ColorBurst: ColorBurst expands the number of available colors and improves the color accuracy. This significantly improves both color purity and color saturation. The combination of ColorBurst and superior video processing creates colors that are more vibrant, more natural, and more enjoyable.


CableClear DNR: Designed to optimize poor NTSC signals from antenna or cable, this noise reduction system eliminates video noise ("snow") for a clean crisp image. This system detects the quality of the incoming video signal, and automatically applies the needed amount of video optimization.


Full HD Resolution:The Toshiba LCD TV displays all inputs at a resolution of 1080p (1920 x 1080). The HDMI inputs will accept 1080p (24Hz/60Hz), 1080i, 720p, 480p, 480i, VGA, SVGA, XGA, WXGA and SXGA signals while the component video inputs will accept 1080i, 720p, 480p and 480i.


HDMI Capabilities: The Toshiba LCD television offers the following HDMI capabilities through its three rear-panel HDMI inputs.


Lip-Sync Latency: This feature activates and auto audio/video display timing adjustment function that allows HDMI source devices to accurately perform synchronization automatically.

Deep Color: This HDMI feature allows the HDMI source to increase the available color bits within the boundaries defined by the RGB or YCbCr color space system.

x.v.Color: The x.v.Color feature expands the acceptable color range (limits) in HDMI signals and allows fro sending of wider color signals from HDMI.

REGZA-LINK:You can control the basic functions of connected audio/video devices using the TV's remote control if you connect a REGZA-LINK compatible audio receiver or playback device. Available basic functions include - Play, Stop, Pause, Skip, Fast Forward, Rewind and Menu navigation (These function depend on the devices connected). REGZA-LINK also allows for the ability of automatic input switching and power on/off for connected components.

Picture Size: When viewing a source, you can choose one of the following picture sizes:


Natural: image is displayed close to its originally formatted proportion

Theater Wide 1: the picture is non-uniformly enlarged; the center of the picture remains close to its true proportion, but the left and right edges are stretched wider to fill the screen, used primarily with a 4:3 source

Theater Wide 2: entire picture is uniformly enlarged, used primarily with a widescreen source

Theater Wide 3: picture is non-uniformly enlarged; the picture is stretched wider to fill the width of the screen and stretched slightly taller

Full: mainly designed for receiving a squeezed 4:3 signal (a 16:9 [480i, 480p] programs squeezed into a 4:3 transmission), the picture is stretched wider to fill the screen, but not taller, none of the picture is hidden

4:3 HD: provides a 4:3 aspect ratio of a 720p, 1080i or 1080p signal; sidebars fill the empty vertical spaces while not distorting the picture from its original size

Native:when receiving a 720p, 1080i or 1080p signal program, Native Mode restores the size of the picture by the 3-5% that is generally lost during the normal over-scanning that occurs on traditional sets. It also avoids unnecessary scaling of HD signals that can reduce overall image resolution and picture quality.

Dot-by-Dot: non-scaling display for VGA, SVGA, XGA, WXGA and SXGA sources only

TheaterWide Scrolling: You can set separate scroll settings for the Theater Wide 2 and TheaterWide 3 modes for each input. You can adjust the scroll of the picture up and down as needed form -10 to +20.


Auto Aspect Ratio: The Auto Aspect Ratio feature will automatically select the picture size when one of the following inputs sources is received - a 480i, 480p, 720p, 1080 signal from the ANT/Cable input; a 480i signal from the Video 1 or 2 inputs; a 480i, 480p, 720p, or 1080i signal for the Component Video 1 or 2 inputs; and a 480i, 480p, 720p, 1080i, 1080p, or VGA (60/72/75Hz) signal from any of the HDMI inputs. The aspect ratio will automatically adjust as follows.


Aspect Ratio Of Signal Source Automatic Aspect Size Selected

4:3 normal Natural (with sidebars)

4:3 letter box TheaterWide 2

16:9 full Full


Note:When the TV cannot identify the aspect ratio of the signal source, the aspect ratio of the TV will be adjusted to your "Picture Size" selection in the TV's menu. The auto aspect ratio feature is not applicable to the PC input.


Cinema Mode:When you view a DVD (3:2 pulldown processed) from a DVD player connected to the Video 1/2, Component Video 1/2, or any of the HDMI inputs on the TV, smoother motion can be obtained by setting the Cinema Mode to Film from Video.


Picture Modes: You can select one of the following picture modes for each input:


Sports: bright and dynamic picture

Standard: standard picture setting

Movie: lower contrast for a darkened room

PC:designed for viewing of tables/documents from a PC

Preference:allows you to adjust and store contrast, back light, DynaLight, brightness, color, tint, and sharpness

Color Temperature: You can change the quality of the picture by selecting from three preset color temperatures - Cool (bluish), Medium (neutral), or Warm (reddish). You can also adjust the levels of greens and blues in each preset temperature.


ColorMaster: The ColorMaster feature adjusts hue, saturation, and color brightness of six different colors (Red, Green, Blue, Yellow, Magenta, Cyan) to create picture quality your way. This provides deep, natural colors for increased depth and realism.


Dynamic Contrast: When dynamic contrast is set to Low, Middle or High, the TV will detect when changes in picture quality that affect the appearance of your contrast settings and adjust the video automatically.


MPEG Noise Reduction: The MPEG noise reduction feature allows you to reduce visible interference caused by MPEG compression. You can choose High, Medium, Low, or Off.


Static Gamma Adjustment:The Static Gamma feature allows you to adjust the levels of black in the picture. The adjustment range is with +/-5 from center.


Film Stabilization: This feature helps to eliminate video shaking that can occur during Cinema Mode processing.


TheaterLock: The TheaterLock feature allows you to lock all items that affect the picture mode setting.


Game Mode: When playing a video game requiring split-second timing (high-action games, music creation, etc.), the Game Mode shortens the frame delays between the on-screen display and the input from the controller. This feature is more effective for 480i and 1080i input signals.


Note: The Game Mode can only be used on the Video 1, Video 2, Component Video 1, Component Video 2, HDMI or PC inputs.


Channel Browser: The Channel Browser allows you to browse and view channels by storing your recently viewed channels in channel history. You can surf back to channels you viewed prior to your current channel, and surf forward from previous channels up to your current channel. Up to 32 previously viewed channels can be stored in history. You can set a Home source for an Ant 1 channel or TV input.


Favorite Browser: Within the Channel Browser you can preview preset Favorite Channels via thumbnails along the bottom of the screen.


Channel Return: The Channel Return feature allows you to switch between two channels without entering an actual channel number each time


SurfLock: The SurfLock feature temporarily memorizes one channel under the Channel Return button, so you can return to that channel quickly from any other channel.


Channel Label: A list of common channel labels (logos) for various channels such as ABC, CBS, etc. are programmed into the TV. You are able to view and assign these logos to your incoming stations. If the desired channel label is not provided, you are able to manually enter and edit labels using the TV's on-screen keyboard.


Input Label: You can label each input according to the connected source. The preset list of labels includes: Cable, DTV, Satellite/DSS, VCR, Laser Disc, DVD, HD DVD, Audio Receiver, Compact Disc, Video Recorder, Game Console, Hide (so you don't have to toggle through an input you're not using), and the default label is blank.


Note: The PC input can only use the default "Blank" or "Hide" label.


Closed Captions: The TVs closed caption mode has two options.


Captions: an on-screen display of the dialog, narration, and sound effects of TV programs and video that are closed captioned

Text: an on-screen display of information not related tot the current program, such as weather or stock data when provide by individual stations

Digital CC: You can customize the closed caption display characteristics by changing the background color, opacity, text size, type, edge and color.


SoundStrip Speaker System: The SoundStrip Speaker System utilizes a thin-line speaker design with enhanced dynamic range. This eliminates the big round speakers, without losing any of the big home theater sound.


SRS WOW: WOW is a special combination of SRS Labs audio technologies that creates a surround sound experience with deep, rich bass from stereo sound sources, making the TV audio sound fuller, richer, and wider. WOW consists of these three features:


SRS 3D: turns on/off the surround sound effect

FOCUS: turns on/off the vocal emphasis effect

TruBass: selects the desired bass expansion level (High, Low, or Off)

Stable Sound: When the signal source is changed, this feature limits the highest volume level to prevent extreme changes in volume.


Bass And Treble: You can adjust the audio quality by adjusting the TV's bass, treble and balance.


Dolby Digital Dynamic Range Control: This dynamic range control feature causes the ATSC dynamic range to be further compressed, allowing you to switch from ATSC to analog broadcast at the same dynamic range.


Mute: The TV mutes the volume half-way when the Mute button is pressed once on the remote; when pressed a second time the TV will mute the volume completely and when pressed a third time the volume will resume as normal.


Lock System:The TV's Lock Menu includes ratings blocking, channel blocking, input locking and a side panel control lock which are all protected by the same user customized 4 digit password.


GameTimer:You can use the GameTimer function to se a time limit for playing a video game from 30 to 120 minutes. When the GameTimer expires, the TV enters Input Lock mode and locks out the input source for the video game device.


Sleep Timer: The sleep timer switches the television off after a specified amount of time. The sleep timer can be adjusted from 10 minutes to 3 hours in 10-minute increments.


Power-On Mode: You can select between a Power-Saving or Fast mode.


Power-Saving: keeps power consumption in standby mode to below 3W; as a result, it takes a bit longer to turn on

Fast Mode: increases power consumption in standby mode to allow the TV to turn on quicker; while in Fast mode the yellow LED on the TV front panel will be lit. (Crutchfield test result: 21 watts)

Last Mode Memory: If the power is cut off while you are viewing the TV, the Last Mode Memory feature automatically turns on the TV when the power is re-supplied.


Note: You should unplug the TV's power cord if it is probable that you will be away from the TV for an extended period of time after the power is restored.


Auto Power Off: In ANT mode the TV will automatically turn itself off after approximately 15 minutes if it is turned to a vacant channel or a station that completes it broadcast for the day.


PC Compatible

PC Connection: You can view the image from your PC on the TV screen by the unit's 15-pin D-sub RGB input or HDMI 1 input. The PC input can accept VGA, SVGA, XGA, WXGA and SXGA signal formats.


PC Settings: When your PC is connected to the TV's 15-pin D-sub RGB terminal, you can use the TV's PC Settings features to make adjustments to the image such as picture horizontal and vertical position, clock phase (helps reduce noise and sharpens picture) and sampling clock (helps reduce noise and minimize periodic vertical stripes on-screen).


PC Audio: This function allows you to output the sound from your PC through the TV's speakers via the PC stereo RCA input on back of the TV.


Mounting Options

Pedestal Stand: The TV is shipped with the pedestal stand attached. The stand can be removed by unscrewing five phillips-head screws located on the rear of the television behind the plastic jack-pack cover which just snaps off. The stand adds approximately " to the overall height of the TV.


Wall Mounting: The TV has four threaded inserts on the back for use with an optional wall-mount bracket. The spacing of the mounting holes is VESA x (mm horizontal x mm vertical), in accordance with the industry standards set by the Video Electronics Standards Association. The threaded inserts require mm machine screws (not supplied).


Remote Control

Multibrand Remote: The supplied remote is pre-programmed to operate this unit and a number of functions on many other brand components; including cable boxes, satellite receivers, DVD players, DVD-recorders, DVD/VCR combos, VCRs, PVRs, CD players, and audio receivers.


Auto Input: The remote features five mode select buttons (TV, Cable/Sat, HD DVD, DVD, and VCR/PVR) that can be specifically assigned to the television's inputs so you can quickly access a particular input by only pressing the mode select button instead of cycling through all the input modes of the television.


Inputs and Outputs Notes

3 HDMI Inputs: The three HDMI inputs are found on the rear-panel of the television. The three HDMI inputs consists of a single type-A connector HDMI jack. The HDMI jacks can accommodate a copy-protected digital connection (HDCP) from other devices (such as digital set-top boxes) that have compatible interfaces. The HDMI jacks are compliant with the E-EDID (Enhanced-Extended Display Identification) standards. If you want to connect a DVI-compatible device, you will need an HDMI-to-DVI adapter cable. Since DVI does not carry audio signals, a stereo audio RCA input is provided for the HDMI 1 input. In addition to the HDMI-to-DVI adapter cable, you will also need a stereo audio RCA cable. The HDMI 1 input can also be used to connect the TV to your PC along with the RCA audio jacks.


Note:The HDMI jack will accept 1080p, 1080i, 720p, 480p, and 480i signals.


Component Video Inputs: The two ColorStream HD Component video inputs will accept 1080i, 720p, 480p, and 480i signals.


Digital Audio Output: An optical digital output is provided to allow you to connect the unit to a surround processor. The format can be set to Dolby Digital or PCM.


PC Input: This connection allows you to view the image of a personal computer on the TV screen. When connecting the PC to the TV, you will need a 15-pin D-sub RGB computer cable and a PC audio cable. The PC input shares the stereo audio RCA input with the television's HDMI 1 input.


IR Out: You can use the TV's IR Out terminal (infrared pass-through) to remotely operate (through the TV) many infrared remote-controlled devices, such as Toshiba infrared remote controlled VCRs or DVD players, enclosed with an entertainment center or audio cabinet.
 

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The known differences are:


The XF550 has a different sound strip, a narrow bezel, 3 HDMI connections (vs. 4 for the 540), and weighs 23.3 pounds more than the 540 (52" screen)


They both apparently use samsung panels (verified by checking pixel shape and pattern, except, perhaps, the 42VX540), but it has not been verified that they use identical panels.


The remaining 'mystery' is - why did Toshiba use heavier structural construction for the XF550, going against the trend of building lighter sets?

There has to be a specific reason.


As a non-expert in electronics, I would like to bring up two possibilities, related to 'issues' that have affected Sony lcd's, which also uses Samsung panels.


One is the 'clouding' issue, and perhaps also the 'flashlights', which, according to some AVS Forum members may be caused by uneven torqueing of the screws which attach the lcd panel to the frame (resulting in 'warping').


The other issue, a more recent one (affecting the Sony 4100 series), is 'sparkling', which may be possibly caused by insufficient 'shielding' of the lcd internal components from EMI - electro-magnetic interference.


The heavier construction could possibly provide better support for the lcd panels (especially the larger sizes), as well as better 'shielding' from EMI or other interference.


All of the above is just 'logical' speculation on my part.


Experts, please take over!
 

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I've been leaning towards the 550 due to the small bezel. However, not only is the 550 20.5 lbs heavier, it's also 2.1 inches deeper. Considering that the width and height are only 1.5 and 1.6 inches greater, I'm beginning to think that maybe I need to start looking at the 540.


Here are the size and weight specs:

550

42.2. x 26.0 x 5.8 (WxHxD)

84.3 lbs.

540

43.7 x 27.6 x 3.7 (WxHxD)

63.8 lbs.
 
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