Which connection choice is best for the best sound? Is the wireless woofer only connected ( to what? )via Bluetooth

The subwoofer is connected by Bluetooth to the sound bar.

I noticed the video should clear dialogue as an option. Is there a mode for dialogue only on the soundbar to isolate voices?

Your best bet is going with the "Voice" setting on the remote, which makes dialogues more audible in shows, movies, and even sports.

What are the individual dimensions of the soundbar and subwoofer separately?

Soundbar is 35.5” long, 2.5” tall, 3.5” deep. Subwoofer is 15” tall, 7.5” wide, 15.5” deep. All measurements are approximate.

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Sony HT-S400 2.1ch Soundbar for TV with Powerful Wireless Subwoofer

Product ID: 420254435

Details

Audio Output Mode
Surround
Brand
Sony
Connectivity Technology
wired wireless
Frequency Response
110 hertz
Speaker Maximum Output Power
330 watts

📏38-inch sleek soundbar width

📡10m Bluetooth wireless range

🔊330W max output power

852420CFA

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎬 Elevate your home theater game with sound that commands attention!

CRYSTAL CLEAR DIALOGUE - X-Balanced Speaker Unit enhances vocal clarity for flawless conversations.
POWERFUL WIRELESS BASS - 12-inch wireless subwoofer delivers deep, room-filling bass without cable clutter.
SLEEK SPACE SAVVY DESIGN - Wall-mountable with a flush fit to elevate your living room aesthetics.
SEAMLESS SMART TV INTEGRATION - Quick Settings on BRAVIA TVs for effortless sound control at your fingertips.
CINEMATIC SURROUND SOUND EXPERIENCE - S-Force PRO Front Surround & Dolby Digital immerse you in every scene.

The Sony HT-S400 is a 2.1 channel soundbar system featuring a powerful 330W output, wireless 12-inch subwoofer, and advanced S-Force PRO Front Surround technology. Designed for easy setup with HDMI ARC and Bluetooth connectivity, it delivers immersive cinematic sound and clear dialogue, perfectly complementing BRAVIA TVs with integrated controls and a sleek, wall-mountable design.

Specifications

ASIN	B09SQWQ4TC
Additional Features	Bluetooth, Dolby Digital
Age Range Description	Adult
Antenna Location	For Surround Sound Systems, For Televisions
Audio Driver Type	Dynamic Driver
Audio Output Mode	Surround
Best Sellers Rank	#11,419 in Electronics ( See Top 100 in Electronics ) #51 in Home Audio Sound Bars
Bluetooth Range	10 meters
Brand	Sony
Built-In Media	Remote
Color	Black
Compatible Devices	Laptop, Smartphone, Tablet, Television
Connectivity Protocol	Bluetooth
Connectivity Technology	wired, wireless
Control Method	Remote
Controller Type	Remote Control
Customer Package Type	Not FFP
Customer Reviews	4.3 4.3 out of 5 stars (2,298)
Enclosure Material	Metal or high-density plastic
Frequency Response	110 hertz
Input Voltage	120 volts
Is Waterproof	FALSE
Item Dimensions D x W x H	13.38"D x 38"W x 9.62"H
Item Weight	16.1 pounds
Manufacturer	Sony
Maximum Range	10 meters
Model Name	HTS-400
Model Number	HT-S400
Mounting Type	Wall Mount
Number of Audio Channels	2.1
Number of Batteries	Nonstandard Battery batteries required.
Number of Items	1
Power Source	Corded Electric
Speaker Maximum Output Power	330 watts
Speaker Size	90 centimeters
Speaker Type	Soundbar, Subwoofer
Specific Uses For Product	Multi-Purpose
Subwoofer Connectivity Technology	Wireless
Subwoofer Diameter	12 inches
Total USB 2.0 Ports	1
Tweeter Diameter	22 millimeters
UPC	027242923942
Unit Count	1 Count
Warranty Description	1 year
Warranty Type	Limited
Water Resistance Level	Not Water Resistant
Wireless Technology	Bluetooth
Woofer Diameter	90 centimeters

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