KLH Model Four Floorstanding Speaker with Acoustic Suspension

Model

Four $1,999.98 / pair

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Model Five DNA in a compact package.

Say hello to Model Four, our smallest three-way loudspeaker ever. If you love Model Five, but worry it might be too big for your space, Model Four is the answer. It features the same dedicated 4-inch midrange and 1-inch aluminum dome tweeter as Model Five and the same punchy, articulate 8-inch woofer found in Model Three. This potent combination is the perfect blend of exceptional full-range sound quality and timeless design in a surprisingly small package.

Includes riser bases & grilles
10-year warranty
Free shipping

Buy as:

1/6

The Model Four is perfectly balanced for almost any space. Most speakers have holes in them to let air escape, we call this a “ported” design. Unfortunately, ported speakers perform poorly when placed next to walls, corners, and small spaces.

Model Four is a sealed speaker, meaning it has no holes or ports, helping ensure it sounds incredible wherever you put it. This design is called acoustic suspension, a technology KLH co-founder Henry Kloss helped pioneer 70 years ago and what we still use today.

At 13-inches wide and 8.25-inches deep, Model Four delivers the presence of a true floorstanding loudspeaker without demanding a floor plan built around it.

A tall wooden floor-standing speaker with a black front grille and silver speaker cones stands on a black metal stand next to a mid-century modern wooden credenza in a room with a green wall and wood floors.

Model Four pays homage to our 1950s heritage with real wood veneers, period-inspired details, and a design that expertly captures the spirit of classic stereo systems.

Real Wood Veneer - Natural wood grain ensures every Model Four is unique and will remain timelessly beautiful. Choose from English Walnut, White Oak, or Black Ash finishes.
Wide Baffle - Most speakers are slim and deep, whereas KLH speakers are wide and shallow. This broad face is the signature look of KLH, and it is as functional as it is gorgeous. The wide front baffle helps ensure more of the music stays where it belongs, right in front of you.
Magnetic Grilles - Period-inspired fabrics effortlessly cling to the front of the speakers to create the signature silhouette of classic speakers. Magnetic grilles are included with your purchase.
Slanted Riser Base - An included 6-degree matte black steel riser base lifts the speaker to the ideal listening height and angle, completing the silhouette.

A speaker that’ll leave you speechless.

Model Four features three drivers to expertly produce full-range music playback. The 8-inch woofer offers deep, punchy bass while the dedicated 4-inch midrange speaker perfectly reproduces voices and instrumentation. To round out the sonic spectrum, a 1-inch tweeter makes high notes sparkle with definition and clarity. Most speakers of this size skip the midrange speaker, demanding the woofer and tweeter handle the entire frequency band. Model Four does not make that compromise, and the difference is immediate.

8" Pulp-Paper Woofer: Deep, controlled bass from a sealed enclosure, reaching down to 46Hz.
4" Pulp-Paper Midrange: A dedicated driver for the frequencies that matter most: voices, guitars, pianos, everything in the middle of the mix.
1" Aluminum Dome Tweeter: Smooth, extended treble with soft rubber surround. Shared with Model Five.
Three-Position Acoustic Balance Control: A KLH original, the rotary switch on the back trims the mids and highs by 1.5 or 3dB. This helps Model Four sound great in a bright, hard-surfaced room as well as a soft, carpeted one.
46Hz–20kHz Frequency response (±3dB)
88dB In-room sensitivity: Easy to drive, pairs comfortably with amplifiers from 30 to 150 watts.
150W: RMS power handling
600W: Peak power handling
108dB: Maximum in-room SPL

Compare products in the current model collection
Feature	Four	Three	Five	Seven
Position	Classic floor-standing	Compact bookshelf	Classic floor-standing	Flagship
Woofer	8 in.	8 in.	10 in.	13 in.
Sensitivity	88dB	88dB	90.5dB	91dB in-room / 88dB free-field
Power Handling	35Hz @ -10dB	35Hz @ -10dB	32Hz @ -10dB	26Hz @ -10dB
Recommended Amplification	150W	150W	200W	250W RMS / 1,000W Peak
Product link	Current Product	Explore Three	Explore Five	Explore Seven

Reviews & Full Specs

Sealed acoustic suspension design delivers balanced, accurate sound with flexible placement, even near walls and corners.

Specifications

All specifications are for a single speaker.

Performance

Frequency Response: 46Hz – 20,000Hz ±3dB
Low Frequency Extension: -10dB @ 35Hz
Sensitivity: 88dB In-Room / 85dB Free-Field @ 2.83V / 1m
Power Handling: 150 Watts / 600 Watts Peak
Recommended Amplification: 30–150 Watts
In-Room Maximum SPL: 108dB
Maximum Output @ 45Hz: 101dB
Impedance: 6 Ohms (3.5 Ohm minimum @ 120Hz)
-6dB Horizontal Dispersion: 140 Degrees
Enclosure Material: Structurally Reinforced ¾" & 1" Medium Density Fiberboard
Inputs: Five-Way Gold-Plated Binding Posts
Riser Base (Included): Matte Black 6° Steel Riser Base

Drivers & Crossover

Crossover Frequency: MF: 380Hz / HF: 2,500Hz (2nd Order Electro-Acoustic)
High Frequency Driver: 1" Aluminum Dome with Soft Rubber Surround
Mid Frequency Driver: 4" Pulp-Paper Cone with Reverse Roll Rubber Surround
Low Frequency Driver: 8" Pulp-Paper Cone with Reverse Roll Rubber Surround & 1.5" Diameter Flat-Wire Voice Coil

Dimensions & Weight

Height: 32.2" (81.8cm) with Riser Base / 26" (66.0cm) without
Width: 13" (33.0cm)
Depth: 11" (27.9cm) with Riser Base / 8.25" (21.0cm) without
Weight: 47 lbs (21.3kg) with Riser Base / 39 lbs (17.7kg) without

What's Included

Riser Base

Grilles

Frequently Asked Questions

What makes the Model Four different from the Model Five?

Model Four brings much of the Model Five’s three-way design philosophy into a shallower, more compact cabinet. It uses an 8-inch woofer, dedicated 4-inch midrange, and 1-inch aluminum dome tweeter, making it easier to integrate into real living spaces while maintaining the tonal balance and separation associated with the Model Collection.

Why is Model Four easier to place in a room?

Its sealed acoustic-suspension enclosure and shallow cabinet make it less dependent on large amounts of space behind the speaker than many ported designs, giving listeners more flexibility near walls and in smaller rooms.

What is an acoustic-suspension design?

Acoustic suspension uses a sealed enclosure, with the air inside the cabinet helping control woofer movement. The result is tight, controlled low-frequency performance and more predictable behavior in real rooms.

What does the three-position Acoustic Balance Control do?

It lets you adjust the speaker’s mid and high-frequency output to better suit the acoustics of your room, whether the space is more reflective or more heavily damped.

What comes with Model Four?

Each speaker includes its magnetic grille and 6-degree steel riser base.

Warranty

KLH backs the Model Four with a 10-year warranty beginning on the original purchase date. The warranty covers production and material defects and is non-transferable.

To validate warranty coverage, the product must be registered with KLH within 120 days of purchase, and the original purchase receipt should be retained as proof of purchase. Products must also be purchased through an authorized KLH dealer, distributor, or reseller to qualify for warranty coverage.

The warranty does not cover damage caused by accidents, misuse, improper maintenance, electrical overloads, incorrect use, altered serial numbers, transportation costs associated with service, or products purchased from unauthorized resellers.

Shipping & Delivery

KLH offers free shipping within the 48 contiguous United States. Orders ship from KLH's Brighton, Colorado facility Monday through Friday, typically within two business days.

The Model Four is sold individually, so customers purchasing a stereo pair should order a quantity of two. Each speaker includes its slant riser base and magnetic grille.