LG SPD7Y vs Polk Audio Signa S4

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Votes 1 1
Rating 5 5

SPD7Y vs Signa S4 comparison chart

Overall
LG SPD7Y
5.6
Polk Audio Signa S4
7.8
4
9
Multichannel surround
10
9

LG SPD7Y vs Polk Audio Signa S4 review

LG SPD7Y
vs
Polk Audio Signa S4

Comparing LG SPD7Y and Polk Audio Signa S4, all pros and cons of devices become clear. Advantages have shown that Signa S4 has advantages over SPD7Y mainly in terms of audio performance. According to the results of our comparison, SPD7Y received 5.6 points out of 10 possible, and Signa S4 was rated 7.8 points.

Advantages LG SPD7Y over Polk Audio Signa S4

  • Surround sound with DTS:X support

Advantages Polk Audio Signa S4 over LG SPD7Y

  • Available the Apple Music service
  • Available the Amazon Music service
  • Stream music with Spotify
  • Wireless connection via Wi-Fi
  • Voice control supports
  • App for remote control
  • Built-in microphone

Audio features

The SPD7Y is rated 7 of 10 against 5 for the Signa S4 according to the audio features rating.

SPD7Y
7
Signa S4
5

It worth understanding the difference between the two types of amplification: a passive soundbar does not have its own amplifier and receives amplification from the signal source, while an active soundbar has a built-in amplifier. The same active type of amplification is used in the SPD7Y and the Signa S4.

There are stereo soundbars and multichannel ones. It is with the help of multichannel devices that you can get volumetric sound. The number of channels in the considered devices is the same - 3.1.2. Also, the output power of the soundbars under consideration is different, LG SPD7Y has 380 (overall) W, and 80 (overall) W has the competitor.

SPD7Y Signa S4
Built-in channels3.1.23.1.2
Amplification typeactiveactive
Output power, W380 (overall)80 (overall)
Separate speaker (in package)00
Separate speaker connectionshas nothas not

Subwoofers

Soundbars can have a built-in or external subwoofer. The first type is inseparable from the soundbar body, but for the second, you can choose a good location for deep bass. Both reviewed devices are equipped with an external subwoofer. Competitors support wireless connection to a separate external subwoofer.

SPD7Y Signa S4
Built-in subwoofer
Separate subwoofer (in package)
Separate subwoofer connectionswirelesswireless

Multichannel surround

Unlike stereo, when reproducing multichannel sound, each specific direction of sound corresponds to its dedicated channel with a separate independent loudspeaker, which creates a three-dimensional sound stage. The SPD7Y received rating 10 out of 10 for multichannel audio processing, but the Signa S4, in the same category, earned 9 out of 10 points.

SPD7Y
10
Signa S4
9

The peculiarity of Dolby Atmos is that this format is object-oriented, that is, each object of the audio signal is sounded separately and linked to its spatial location. If we consider the models in terms of support for Dolby Atmos, then both soundbars can work with this technology.

DTS:X is an algorithm for processing sound scenes by the processor, linking directly to objects, rather than channels, and calculating the optimal distribution of sound output in a room. The manufacturer has implemented DTS:X technology only in SPD7Y.

SPD7Y Signa S4
Dolby Atmos
Dolby (other)Dolby TrueHD, Dolby Digital, Dolby Digital PlusDolby Digital, Dolby Digital Plus, Dolby TrueHD
DTS:X
DTS (other)DTS-HD Master Audio, DTS-HD High Resolution Audio, DTS Digital SurroundDTS HD

Streaming services

The possibility to listen online to millions of songs from one device has become a reality thanks to streaming services.

SPD7Y
0
Signa S4
10

The popular Spotify service is available on the Signa S4.

SPD7Y Signa S4
Apple Music (AirPlay)
Amazon Music
Spotify
Other streaming serviceshas notPandora, SoundCloud

Connectivity

The existence of a sufficient number of current connectors significantly expands the functionality of the device. For example, only through HDMI is it possible to implement the transfer of object-oriented formats, and the presence of a Bluetooth connection will allow remote control, etc. The devices received different ratings for connectivity: LG SPD7Y was rated 7 out of 10, and Polk Audio Signa S4 was rated 6 out of 10.

SPD7Y
7
Signa S4
6

The presence of Wi-Fi in the soundbar allows you to get rid of wires when connected to a sound source and get minimal audio latency when playing content from streaming services. Wireless connection via Wi-Fi is possible on the Signa S4.

Bluetooth connection is now one of the main communication protocols for speaker systems, which provides excellent quality and minimal audio latency. The availability of Bluetooth protocol, we can see in both models. The SPD7Y has 1/1 HDMI inputs/outputs, but the Signa S4 got 0/1 HDMI inputs/outputs from the manufacturer.

HDMI ARC is a very usefull technology that creates a two-way communication channel between a TV and another device. This is convenient since there is no need to use optical and other cables in the system. HDMI ARC is basic for both soundbars. Connecting external devices via USB can be done on both models.

SPD7Y Signa S4
WI-FI
Bluetooth
Ethernet (RJ45)00
NFC
HDMI input/output1/10/1
HDMI ARC
HDMI eARC
HDMI CEC
Optical digital input/output1/01/0
USB1 (USB 2.0)1 (USB 2.0)
Coaxial digital input/output0/00/0
Analog audio input/output (RCA)0/00/0
Headphone output00
Subwoofer output00

Features

Voice control is designed to make operating the device more convenient. This allows you to control basic soundbar functions from anywhere in the room.

Proprietary applications allow you to control your soundbars remotely. This is possible both via Bluetooth and Wi-Fi. The Signa S4 has its own remote control application. Only Polk Audio Signa S4 has a built-in microphone.

Some soundbars can be part of a multi-room system and it is an affordable solution for sounding the whole house. However, it is impossible to create a multiroom system based on each of these soundbars.

SPD7Y Signa S4
Voice control
App control
Microphone
Remote control
Multi-room

Dimensions

SPD7Y Signa S4
Size (Wx H x D), cm/in98.8x22.6x44.1/38.9x8.9x17.4104.6x9.5x6/41.2x3.7x2.4
Weight, kg/pounds3.8/8.42.9/6
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