Product comparison · 2 home cinema systems

LG LHD687 home cinema system 4.2 channels vs Yamaha YHT-1840 home cinema system 5.1 channels

17specifications compared
13differ
4identical
57known for one product only

Key differences

The Yamaha YHT-1840 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 1,246.5 W more RMS rated power than the Yamaha YHT-1840 home cinema system 5.1 channels (1250 W vs 3.5 W). The Yamaha YHT-1840 home cinema system 5.1 channels has 1 dB more front speaker sensitivity than the LG LHD687 home cinema system 4.2 channels (83 dB vs 82 dB). Only the Yamaha YHT-1840 home cinema system 5.1 channels has 3D. Only the LG LHD687 home cinema system 4.2 channels has Bluetooth.

Optical disc player type
- LHD687 home cinema system 4.2 channels:DVD player
- YHT-1840 home cinema system 5.1 channels:Not included
3D
- LHD687 home cinema system 4.2 channels:No
- YHT-1840 home cinema system 5.1 channels:Yes
Audio output channels
- LHD687 home cinema system 4.2 channels:4.2 channels
- YHT-1840 home cinema system 5.1 channels:5.1 channels
RMS rated power
- LHD687 home cinema system 4.2 channels:1250 W
- YHT-1840 home cinema system 5.1 channels:3.5 W
Supported radio bands
- LHD687 home cinema system 4.2 channels:PLL
- YHT-1840 home cinema system 5.1 channels:AM, FM
Front speaker sensitivity
- LHD687 home cinema system 4.2 channels:82 dB
- YHT-1840 home cinema system 5.1 channels:83 dB
Front speaker impedance
- LHD687 home cinema system 4.2 channels:3 Ω
- YHT-1840 home cinema system 5.1 channels:6 Ω
Bluetooth
- LHD687 home cinema system 4.2 channels:Yes
- YHT-1840 home cinema system 5.1 channels:No

Side by side

Differences highlightedShow differences only

Comparison of LHD687, YHT-1840
74 specifications	A LG LHD687 home cinema system 4.2 channels Model LHD687 View product	B Yamaha YHT-1840 home cinema system 5.1 channels Model YHT-1840 View product
Optical drive2 differ
Optical disc player typeDiffers	DVD player	Not included
Disc types supportedDiffers	CD, CD-R, CD-RW, DVD, DVD+R, DVD+RW, DVD-R, DVD-RW	No
Playback disc formatsKnown for one	MP3	Unknown — not stated by the source
Storageidentical
Card reader integratedKnown for one	Unknown — not stated by the source	No
Video1 differ
3DDiffers	No	Yes
Full HDKnown for one	Unknown — not stated by the source	Yes
Aspect ratioKnown for one	Unknown — not stated by the source	16:9
Video formats supportedKnown for one	MPEG, MPEG1, MPEG2, XVID	Unknown — not stated by the source
Video D/A Converter (DAC)Known for one	12-bit/148MHz	Unknown — not stated by the source
Analog signal format systemKnown for one	NTSC, PAL	Unknown — not stated by the source
Video upscalingKnown for one	Yes	Unknown — not stated by the source
Audio3 differ
Audio output channelsDiffers	4.2 channels	5.1 channels
RMS rated powerDiffers	1250 W	3.5 W
Audio decodersDiffers	Dolby Digital	Dolby Digital, Dolby Digital Plus
Audio formats supportedKnown for one	LPCM	Unknown — not stated by the source
Total Harmonic Distortion (THD)Known for one	25%	Unknown — not stated by the source
Radio1 differ
FM radio	Yes	Yes
Supported radio bandsDiffers	PLL	AM, FM
Preset stations quantityKnown for one	50	Unknown — not stated by the source
Front speakers2 differ
Front speaker frequency rangeKnown for one	Unknown — not stated by the source	30 - 25000 Hz
Front speaker sensitivityDiffers	82 dB	83 dB
Front speaker impedanceDiffers	3 Ω	6 Ω
Front speaker peak powerKnown for one	Unknown — not stated by the source	100 W
Front speaker woofer diameter (imperial)Known for one	7.62 cm (3")	Unknown — not stated by the source
Center speakeridentical
Center speaker peak powerKnown for one	Unknown — not stated by the source	100 W
Satellite speakersidentical
Wireless satellite speakersKnown for one	Unknown — not stated by the source	No
Subwooferidentical
Subwoofer typeKnown for one	Unknown — not stated by the source	Active subwoofer
Wireless subwooferKnown for one	Unknown — not stated by the source	No
Subwoofer peak powerKnown for one	Unknown — not stated by the source	100 W
Network1 differ
BluetoothDiffers	Yes	No
Ethernet LAN	No	No
Near Field Communication (NFC)Known for one	Unknown — not stated by the source	No
Wi-Fi	No	No
Wi-Fi readyKnown for one	Unknown — not stated by the source	No
Ports & interfaces2 differ
HDMI inKnown for one	Unknown — not stated by the source	4
Number of HDMI outputsKnown for one	Unknown — not stated by the source	4
USB ports quantityDiffers	1	0
Component video (YPbPr/YCbCr) outKnown for one	Unknown — not stated by the source	0
S-Video outputs quantityKnown for one	Unknown — not stated by the source	0
Digital audio coaxial inKnown for one	Unknown — not stated by the source	2
Digital audio coaxial outKnown for one	Unknown — not stated by the source	2
Digital audio optical inDiffers	1	2
Digital audio optical outKnown for one	Unknown — not stated by the source	1
FM antennaKnown for one	Unknown — not stated by the source	Yes
Headphone outputsKnown for one	Unknown — not stated by the source	1
HDMI ports quantityKnown for one	1	Unknown — not stated by the source
Audio (L/R) inKnown for one	1	Unknown — not stated by the source
Microphone inKnown for one	Yes	Unknown — not stated by the source
Displayidentical
On Screen Display (OSD)Known for one	Unknown — not stated by the source	Yes
Built-in displayKnown for one	Yes	Unknown — not stated by the source
Display resolutionKnown for one	1920 x 1080 pixels	Unknown — not stated by the source
Poweridentical
Power consumption (standby)Known for one	Unknown — not stated by the source	0.3 W
Power consumption (typical)Known for one	145 W	Unknown — not stated by the source
Weight & dimensions1 differ
Front speaker dimensions (WxDxH)Differs	233 x 998 x 300 mm	112 x 116 x 176 mm
Front speaker weightKnown for one	Unknown — not stated by the source	590 g
Center speaker dimensions (WxDxH)Known for one	Unknown — not stated by the source	276 x 118 x 111 mm
Center speaker weightKnown for one	Unknown — not stated by the source	730 g
Subwoofer dimensions (W x D x H)Known for one	Unknown — not stated by the source	290 x 315 x 292 mm
Subwoofer weightKnown for one	Unknown — not stated by the source	5.8 kg
Main unit dimensions (WxDxH)Known for one	360 x 58 x 298.5 mm	Unknown — not stated by the source
Packaging contentidentical
Remote control includedKnown for one	Unknown — not stated by the source	Yes
Other featuresidentical
Built-in HDDKnown for one	Unknown — not stated by the source	No
AirPlayKnown for one	Unknown — not stated by the source	No
BrowsingKnown for one	Unknown — not stated by the source	No
Start-up timeKnown for one	Unknown — not stated by the source	500 ms
SubwooferKnown for one	Unknown — not stated by the source	Yes
Technical detailsidentical
Product colour	Black	Black
Driver unitKnown for one	Unknown — not stated by the source	16 cm
Maximum input powerKnown for one	Unknown — not stated by the source	100 W
PowerKnown for one	Unknown — not stated by the source	100 W
Power source typeKnown for one	Unknown — not stated by the source	AC
KaraokeKnown for one	Yes	Unknown — not stated by the source
USB direct playbackKnown for one	Yes	Unknown — not stated by the source
Equalizer modesKnown for one	Bass Blast, Standart	Unknown — not stated by the source

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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