Product comparison · 2 home cinema systems

LG LHD645-DB home cinema system 5.1 channels vs LG LHD687 home cinema system 4.2 channels

19specifications compared
10differ
9identical
42known for one product only

Key differences

The LG LHD645-DB home cinema system 5.1 channels has 0.9 channels more audio output channels than the LG LHD687 home cinema system 4.2 channels (5.1 channels vs 4.2 channels). The LG LHD687 home cinema system 4.2 channels has 250 W more RMS rated power than the LG LHD645-DB home cinema system 5.1 channels (1250 W vs 1000 W). Only the LG LHD645-DB home cinema system 5.1 channels has Ethernet LAN. Playback disc formats: CD audio, CD video, SVCD, VCD on the LG LHD645-DB home cinema system 5.1 channels, MP3 on the LG LHD687 home cinema system 4.2 channels. Video formats supported: MPEG2, XVID on the LG LHD645-DB home cinema system 5.1 channels, MPEG, MPEG1, MPEG2, XVID on the LG LHD687 home cinema system 4.2 channels.

Video formats supported
- LHD645-DB home cinema system 5.1 channels:MPEG2, XVID
- LHD687 home cinema system 4.2 channels:MPEG, MPEG1, MPEG2, XVID
Audio output channels
- LHD645-DB home cinema system 5.1 channels:5.1 channels
- LHD687 home cinema system 4.2 channels:4.2 channels
RMS rated power
- LHD645-DB home cinema system 5.1 channels:1000 W
- LHD687 home cinema system 4.2 channels:1250 W
Audio formats supported
- LHD645-DB home cinema system 5.1 channels:MP3, WMA
- LHD687 home cinema system 4.2 channels:LPCM
Supported radio bands
- LHD645-DB home cinema system 5.1 channels:FM
- LHD687 home cinema system 4.2 channels:PLL
Ethernet LAN
- LHD645-DB home cinema system 5.1 channels:Yes
- LHD687 home cinema system 4.2 channels:No
Main unit dimensions (WxDxH)
- LHD645-DB home cinema system 5.1 channels:360 x 299 x 60.5 mm
- LHD687 home cinema system 4.2 channels:360 x 58 x 298.5 mm
Front speaker dimensions (WxDxH)
- LHD645-DB home cinema system 5.1 channels:250 x 250 x 1100 mm
- LHD687 home cinema system 4.2 channels:233 x 998 x 300 mm

Side by side

Differences highlightedShow differences only

Comparison of LHD645-DB, LHD687
61 specifications	A LG LHD645-DB home cinema system 5.1 channels Model LHD645-DB View product	B LG LHD687 home cinema system 4.2 channels Model LHD687 View product
Optical drive2 differ
Optical disc player type	DVD player	DVD player
Disc types supportedDiffers	CD, CD-R, CD-RW, DVD, DVD+RW, DVD-R, DVD-RW	CD, CD-R, CD-RW, DVD, DVD+R, DVD+RW, DVD-R, DVD-RW
Number of optical discsKnown for one	1 discs	Unknown — not stated by the source
Playback disc formatsDiffers	CD audio, CD video, SVCD, VCD	MP3
Video1 differ
3D	No	No
Video formats supportedDiffers	MPEG2, XVID	MPEG, MPEG1, MPEG2, XVID
Full HDKnown for one	Yes	Unknown — not stated by the source
Video D/A Converter (DAC)Known for one	Unknown — not stated by the source	12-bit/148MHz
Analog signal format systemKnown for one	Unknown — not stated by the source	NTSC, PAL
Video upscalingKnown for one	Unknown — not stated by the source	Yes
Audio3 differ
Audio output channelsDiffers	5.1 channels	4.2 channels
RMS rated powerDiffers	1000 W	1250 W
Audio formats supportedDiffers	MP3, WMA	LPCM
Audio decodersKnown for one	Unknown — not stated by the source	Dolby Digital
Total Harmonic Distortion (THD)Known for one	Unknown — not stated by the source	25%
Radio1 differ
FM radio	Yes	Yes
Supported radio bandsDiffers	FM	PLL
Preset stations quantityKnown for one	Unknown — not stated by the source	50
Front speakersidentical
Front speakers RMS powerKnown for one	334 W	Unknown — not stated by the source
Front speaker sensitivityKnown for one	Unknown — not stated by the source	82 dB
Front speaker impedanceKnown for one	Unknown — not stated by the source	3 Ω
Front speaker woofer diameter (imperial)Known for one	Unknown — not stated by the source	7.62 cm (3")
Center speakeridentical
Center speaker RMS powerKnown for one	167 W	Unknown — not stated by the source
Satellite speakersidentical
Satellite speakers RMS powerKnown for one	334 W	Unknown — not stated by the source
Number of satellite speakersKnown for one	2	Unknown — not stated by the source
Subwooferidentical
Subwoofer RMS powerKnown for one	167 W	Unknown — not stated by the source
Network1 differ
Bluetooth	Yes	Yes
Ethernet LANDiffers	Yes	No
Wi-Fi	No	No
Ports & interfacesidentical
HDMI inKnown for one	0	Unknown — not stated by the source
Number of HDMI outputsKnown for one	1	Unknown — not stated by the source
SCART ports quantityKnown for one	0	Unknown — not stated by the source
USB ports quantity	1	1
USB versionKnown for one	2.0	Unknown — not stated by the source
Component video (YPbPr/YCbCr) outKnown for one	0	Unknown — not stated by the source
Composite video outKnown for one	1	Unknown — not stated by the source
S-Video outputs quantityKnown for one	0	Unknown — not stated by the source
Audio (L/R) in	1	1
Digital audio coaxial inKnown for one	0	Unknown — not stated by the source
Digital audio coaxial outKnown for one	0	Unknown — not stated by the source
Digital audio optical in	1	1
Digital audio optical outKnown for one	0	Unknown — not stated by the source
Ethernet LAN (RJ-45) portsKnown for one	1	Unknown — not stated by the source
FM antennaKnown for one	Yes	Unknown — not stated by the source
HDMI ports quantityKnown for one	Unknown — not stated by the source	1
Microphone inKnown for one	Unknown — not stated by the source	Yes
Weight & dimensions2 differ
Main unit dimensions (WxDxH)Differs	360 x 299 x 60.5 mm	360 x 58 x 298.5 mm
Front speaker dimensions (WxDxH)Differs	250 x 250 x 1100 mm	233 x 998 x 300 mm
Center speaker dimensions (WxDxH)Known for one	260 x 74 x 93 mm	Unknown — not stated by the source
Satellite speaker dimensions (WxDxH)Known for one	88 x 81 x 122 mm	Unknown — not stated by the source
Subwoofer dimensions (W x D x H)Known for one	191 x 318 x 388.5 mm	Unknown — not stated by the source
Other featuresidentical
Apple docking compatibilityKnown for one	Not supported	Unknown — not stated by the source
Built-in HDDKnown for one	No	Unknown — not stated by the source
TV tuner integratedKnown for one	No	Unknown — not stated by the source
Technical detailsidentical
Product colour	Black	Black
KaraokeKnown for one	Unknown — not stated by the source	Yes
USB direct playbackKnown for one	Unknown — not stated by the source	Yes
Equalizer modesKnown for one	Unknown — not stated by the source	Bass Blast, Standart
Displayidentical
Built-in displayKnown for one	Unknown — not stated by the source	Yes
Display resolutionKnown for one	Unknown — not stated by the source	1920 x 1080 pixels
Poweridentical
Power consumption (typical)Known for one	Unknown — not stated by the source	145 W

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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