If you are new to home audio, welcome. This guide walks you through the KLH Model Three bookshelf speakers in plain English, with no assumed knowledge and no jargon left unexplained. By the end, you will understand what these speakers are, how they fit into a music system, what every part does, and whether they suit the way you listen. Take your time and read the parts that interest you most.
The Basics: What Am I Actually Looking At?
What is the KLH Model Three?
The KLH Model Three is a two-way bookshelf speaker, which means it is a compact speaker designed to sit on a stand or a sturdy shelf rather than stand on the floor. "Two-way" tells you it uses two types of drivers (the cones and domes that make sound) to cover the full range of music: one for the lower and middle sounds, and one for the highs. Despite being called a "bookshelf" speaker, it is fairly substantial and sounds its best on proper stands or on the included angled base, with a little breathing room around it.
Where does a bookshelf speaker fit in a home audio system?
A bookshelf speaker like the Model Three connects to an amplifier or receiver, which is the box that powers the speakers and lets you choose what to play. In a typical setup you have a source (a record player, streamer, or CD player), an amplifier that boosts the signal, and a pair of speakers that turn that signal into sound you can hear. The Model Three is sold and used in pairs, one for the left channel and one for the right, so you get proper stereo sound.
Why does KLH's history matter?
KLH is one of the classic American loudspeaker names, founded in 1957 by Henry Kloss. That heritage matters because KLH helped popularize a specific speaker design (acoustic suspension, explained below) that gives its speakers a distinctive clean, natural sound. Modern KLH revives these designs with up-to-date drivers and cabinets, and backs the Model Three with a 10 year warranty, which reflects real confidence in how well they are built to last.
The Drivers: What Makes the Sound
What does the 8 inch woofer do?
The 8 inch woofer is the large cone that handles the bass and lower midrange, the foundation of the music. Its cone is made of pulp-paper, a treated paper material that KLH chooses because it is light and well-damped, meaning it produces a natural, uncolored tone without adding a sound of its own. The woofer sits in a die-cast aluminum frame, a strong metal chassis that keeps everything rigidly in place, and uses a reverse-roll rubber suspension, which is the flexible ring around the edge of the cone. That suspension is oriented to control the cone's movement very precisely, which lowers distortion and keeps the sound clean.
What does the 1 inch aluminum dome tweeter do?
The 1 inch aluminum dome tweeter reproduces the high frequencies, the detail and sparkle in music like cymbals, strings, and the air in a voice. It is a small dome made of anodized aluminum, and metal is used here because it is both light and rigid, which lets it move quickly and accurately for extended, detailed treble. In short, the woofer handles the weight and body of the music, and the tweeter handles the fine detail on top.
What is the crossover and why does 1,500 Hz matter?
The crossover is an internal circuit that decides which driver plays which part of the music, and in the Model Three it hands off from the woofer to the tweeter at 1,500 Hz. Think of it as a traffic director sending the lower sounds to the 8 inch woofer and the higher sounds to the tweeter, so each driver only does the job it does best. You never touch or adjust the crossover; it simply works in the background so the two drivers blend into one seamless sound.
The KLH Signature: Acoustic Suspension and the Balance Control
What is acoustic suspension, and why does KLH use it?
Acoustic suspension means the speaker cabinet is completely sealed, so the trapped air inside acts like a spring that controls the woofer's motion. KLH uses this design because it produces very tight, accurate, low-distortion bass that stays clean even when you turn the volume up, and it gives deeper bass from a smaller cabinet than a vented design would. There is one trade-off: sealed speakers are usually a touch less sensitive, meaning they like a capable amplifier to sound their best. This sealed-box approach is the design KLH helped make famous in the late 1950s, and it defines the way the brand sounds.
What does the Acoustic Balance Control do?
The Acoustic Balance Control is a 3-position switch on the speaker that lets you raise or lower the high-frequency level in small steps, so you can tune the brightness to your room and your taste. If your room is very lively (lots of hard surfaces and glass) and sounds a little sharp, you can dial the treble down slightly; if your room is heavily furnished and sounds a bit dull, you can lift it. It is a KLH signature feature carried over from the classic Model Five, and it gives you a simple, effective way to get the sound just right without any complicated equipment.
What is the slant-riser base for?
The slant-riser base is an included angled plinth that tilts the speaker back slightly, aiming the sound toward your ears when the speaker sits lower than ear height. This gentle tilt helps the sound from both drivers reach you in better time alignment, and it also adds stability. With the riser base fitted, the speaker stands 28.25 inches tall and weighs 36 pounds, so it becomes a more grounded, floor-friendly package.
The Specifications: What They Mean in Real Life
What does a frequency response of 46 Hz to 20 kHz mean?
Frequency response describes the range of sound the speaker can reproduce, from the lowest bass to the highest treble, and 46 Hz to 20 kHz covers nearly the full range of what most people can hear. The lower number, 46 Hz, tells you how deep the bass goes, and that is genuinely deep for a bookshelf speaker, enough for satisfying weight on bass guitar, drums, and the low notes of a piano. The "+/-3 dB" part is simply a measure of how evenly it plays across that range, and a tighter number like this indicates consistent, balanced sound.
What does a sensitivity of 88 dB mean in practice?
Sensitivity tells you how loud a speaker plays for a given amount of amplifier power, and 88 dB (measured in-room) means the Model Three is reasonably easy to drive to satisfying volumes. The free-field figure of 85 dB is the same measurement taken without room reinforcement, so it reads a little lower. In everyday terms, these numbers mean the Model Three does not demand an enormous amplifier, though because it is a sealed design it rewards a good, capable one.
What do 6 ohms impedance and 30 to 150 watts mean?
Impedance is the electrical load the speaker presents to your amplifier, and at a nominal 6 ohms (dropping to 3.7 ohms at minimum) the Model Three is an easy, friendly match for most quality amplifiers and receivers. The recommended power range of 30 to 150 watts tells you the sweet spot for amplifier strength: at least 30 watts to bring the speakers to life, and up to 150 watts of clean power if you want plenty of headroom for dynamic music at higher volumes. You do not need to reach the top of that range; it simply shows the speaker can handle a strong amplifier comfortably.
Fit and Finish: Living With the Model Three
What size are they and what finishes are available?
Each Model Three measures 19 inches tall, 12.25 inches wide, and 10.5 inches deep, and weighs 29 pounds each, so these are solid, substantial speakers that feel reassuringly well made. They come in three real-wood-look cabinet finishes: English Walnut, Nordic Noir, and West African Mahogany, so you can choose the look that suits your room. That weight and build quality are part of why they sound so clean, as a solid, well-constructed cabinet keeps unwanted vibration out of the music.
Who Are the KLH Model Three Speakers For?
The Model Three suits someone who wants genuinely full, natural sound from a compact pair of speakers and appreciates classic craftsmanship. They are a great choice if you enjoy a wide range of music, listen at home in a normal-sized room, and want speakers that reward a decent amplifier with clean, tight bass and detailed highs. If you like the idea of tailoring the treble to your room with the Acoustic Balance Control, and you value a design with real heritage backed by a 10 year warranty, the Model Three sits right in the sweet spot of KLH's range. They are welcoming to newcomers and satisfying to grow with, which is exactly what you want from your first serious pair of speakers.