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Two white rectangular in-wall speakers with black driver cones visible

KLH

KLH M-8600-W In-Wall Speaker Pair

SKU CH-SWP9-607WX

A pair of in-wall speakers with dual 6.5-inch Kevlar woofers, 1-inch silk dome tweeters, 45Hz-20KHz response and 91dB sensitivity

  • TypeIndoor/Outdoor Speakers
  • Dual 6.5″ Kevlar/fiberglass woofers deliver deep bass
  • 1″ silk dome tweeter produces clear high frequencies
  • 45 Hz–20 kHz response covers full audio range
  • 91 dB sensitivity works with 50–275 W amplifiers
  • Flush-mount 11.3″ × 19.7″ design integrates cleanly into walls

Pair of in-wall speakers for architectural audio

This bundle supplies two KLH M-8600-W speakers designed for flush mounting in walls or ceilings. Each unit uses dual 6.5-inch fiberglass and Kevlar laminate woofers with a 1-inch silk dome tweeter inside a sealed MDF enclosure. The steel-reinforced frame and six dog-leg mounting points secure the speakers in standard stud cavities. They suit whole-house music or home-theatre installations where visible cabinets are unwanted.

Sealed enclosure and mounting hardware shape

The factory-sealed, tuned MDF cabinet removes the need for separate back-boxes and keeps bass response consistent behind drywall. Six dog-leg clamps grip the framing without extra brackets, speeding up a professional finish. A paintable white grille lets the speakers disappear into the ceiling or wall surface. The bundle simply doubles the hardware for stereo or multi-room coverage.

8-ohm load and 45 Hz low end define amplifier

At 8 ohms nominal and 91 dB sensitivity the pair works with amplifiers rated from 50 to 275 watts per channel. The specified frequency response reaches 45 Hz, so deep sub-bass below that point will not be reproduced without a separate subwoofer. Outdoor-rated construction handles humidity but the speakers are not submersible and require protected wiring runs.

Highlights

  • Dual 6.5″ Kevlar/fiberglass woofers deliver deep bass
  • 1″ silk dome tweeter produces clear high frequencies
  • 45 Hz–20 kHz response covers full audio range
  • 91 dB sensitivity works with 50–275 W amplifiers
  • Flush-mount 11.3″ × 19.7″ design integrates cleanly into walls

Specifications

TypeIndoor/Outdoor Speakers

Questions about this item

Do the 6.5-inch Kevlar/fiberglass woofers or the 1-inch silk dome tweeter need periodic replacement?

The sealed MDF enclosure protects the drivers; no scheduled replacement is required for the woofers or tweeter under normal indoor or outdoor use.

What limits continuous output first — the 8-ohm impedance or the 275 W amplifier ceiling?

The 275 W maximum amplifier rating is the practical ceiling; the 8-ohm load is easily driven by compatible amps rated from 50 W to 275 W.

How much heat or noise do the speakers add when running all day at 91 dB sensitivity?

Passive speakers generate no fan noise and negligible heat; the enclosure stays near room temperature even during extended high-volume playback.

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