Klipsch KS-7800-THX — a Flush-Mount 8" Surround With Twin Tweeters
What sets the Klipsch KS-7800-THX apart from the LCR models in this lineup is its twin-tweeter Wide Dispersion Surround Technology array, built around an 8" woofer and fully flush-mounted in the wall — giving you surround-channel dispersion with zero visible cabinet.
Wide Dispersion Surround Technology (WDST)
Two vertically stacked Tractrix® horn-loaded 1" titanium dome tweeters spread high-frequency energy broadly around the listening area instead of focusing it at one seat, giving surround effects a diffuse, enveloping quality rather than sounding like they come from a single point on the wall.
Integrated Back Box, Fully In-Wall
Like its KL-7800-THX LCR sibling, the KS-7800-THX has its own integrated back-box enclosure, so bass response is predictable and repeatable regardless of the wall cavity behind it, and it can be installed in new or existing construction.
Designed to Pair With the KL-7800-THX
The KS-7800-THX is the matched surround companion to Klipsch’s KL-7800-THX in-wall LCR, letting you build a fully flush-mounted THX Ultra2 system with no floor-standing or shelf speakers required anywhere in the room.
Let’s Design Your Ottawa In-Wall Surround Layout
In-wall surrounds like the KS-7800-THX are almost always specified as part of a larger custom install, so I’d invite you to book a design and installation consultation with our Ottawa team to plan placement and wiring before any walls are opened up.
Product Highlights
- 8" high-output woofer
- Two vertically stacked Tractrix® horn-loaded 1" titanium dome tweeters (Wide Dispersion Surround Technology)
- Integrated back-box enclosure
- Frequency response: 80Hz–20kHz (±3dB)
- Sensitivity: 91 dB @ 2.83V/1m
- Power handling: 100W continuous / 400W peak
- Impedance: 8 ohms
- Cutout dimensions: approximately 19" x 10"
- Paintable grille
- THX® Ultra2 certified
What's in the Box
- 1 in-wall surround loudspeaker with integrated back box
- Paintable grille
- Cutout template
- Mounting hardware (sure-grip dogs)
- Owner's manual
Frequently Asked Questions
Can I mix the KS-7800-THX with in-ceiling surrounds instead?
You can, though for the most consistent surround field most installers stick with one mounting style — either all in-wall or all in-ceiling — per row of seating. We can talk through what fits your room during a consultation.
Does the KS-7800-THX need a matching center or LCR speaker?
It’s designed as a surround channel, so it’s meant to be paired with front LCR speakers such as the KL-7800-THX rather than used on its own as a main channel.
