KLH Model 3 Speakers

KLH Model Three Two-Way Acoustic Suspension Bookshelf Loudspeaker

A compact, wide-baffle, acoustic suspension bookshelf speaker with an 8-inch pulp-paper woofer, 1-inch aluminum dome tweeter, 13-component crossover, three-position Acoustic Balance Control, and an included 8-degree slant riser base — reviewed in Stereophile, praised by Sound & Vision, and described as "one of the best deals and best-kept secrets in audio."

What It Is and Who It's For

The KLH Model Three is the compact bookshelf speaker in KLH's Model Collection Series — the smaller counterpart to the Model Five floorstanding speaker and the entry point into the acoustic suspension design philosophy that made KLH one of the most respected loudspeaker manufacturers in American audio history. It is a two-way design with an 8-inch pulp-paper woofer and a 1-inch aluminum dome tweeter in a sealed acoustic suspension enclosure, and it arrives with an 8-degree slant riser base included in the box at no additional cost.

The listener the Model Three serves is specific and clear. It is the music listener with a smaller room, a bookshelf, or a desk who refuses to accept that compact size requires sonic compromise. It is the apartment dweller or dedicated secondary-system owner who wants genuine audiophile performance without a floorstanding speaker's physical demands. It is the listener who appreciates what wide-baffle acoustic suspension speakers do for imaging, bass quality, and placement flexibility, and who wants that character at a price that leaves money for the rest of the system. And it is anyone who believes — correctly — that a speaker whose design was considered and its materials carefully specified will outlast and outperform a ported box of similar size that measured well in an anechoic chamber but struggles in a real room near a wall.

Stereophile reviewed the Model Three in December 2022 and called it "one of the best deals and best-kept secrets in audio." Sound & Vision said it "offers a unique blend of superb sound, an included stand that will allow it to perform at its best, adjustability, and a unique, vintage look with up-to-date audio performance." These are not marginal endorsements from niche publications — they are from two of the most widely read audio publications in the United States.

The Acoustic Suspension Design: Why It Matters in a Small Cabinet

The acoustic suspension principle is simultaneously KLH's heritage and its current engineering commitment. In a sealed enclosure, the air trapped inside the cabinet acts as an air spring — the dominant restoring force for the woofer cone's return motion. Because air behaves more linearly than most mechanical suspensions over large displacement ranges, the woofer tracks the input signal more accurately throughout its travel. The result is lower distortion during bass reproduction, tighter transient behavior — bass notes that start and stop cleanly rather than overhang — and a gradual rolloff below resonance that extends usable bass further into the room than the rated specification might suggest.

This advantage is particularly meaningful in a compact cabinet. A ported design of similar dimensions would need to tune its port to a relatively high frequency, producing peak output at that tuning frequency and a steep rolloff below it. The acoustic suspension Model Three rolls off more gradually and more linearly, producing bass that integrates naturally into the room's acoustic reinforcement at low frequencies rather than peaking artificially. The extension to −10 dB at 35 Hz is genuine — a 29-pound bookshelf speaker that reaches 35 Hz with useful output is not a common thing.

The woofer is built specifically for this application. Its die-cast aluminum frame is designed for the high-excursion demands of a sealed enclosure — sealed designs require the woofer to move farther than a ported design of similar size to achieve the same bass output, and the frame and suspension must accommodate that travel without mechanical limiting or distortion. The cone is 8-inch pulp-paper, with a reverse-roll rubber surround and a 1.5-inch flat-wire voice coil. Flat-wire voice coils pack more conductor turns into the same radial space as round wire, increasing motor efficiency. An aluminum flux stabilizing ring in the magnet assembly reduces nonlinearities during large cone excursions — it is the same technology used in high-end woofer designs costing far more. Laser-based measurement techniques refined the critical suspension parameters during development. This level of engineering attention to a mid-priced bookshelf speaker driver is unusual and speaks to chief engineer Kerry Geist's priorities.

The 13-Component Crossover and the 1-Inch Tweeter

The crossover network uses 13 carefully selected components — iron-core inductors and Mylar capacitors — crossing over at 1,500 Hz (2nd-order electro-acoustic, 12 dB/octave). A 1,500 Hz crossover point is relatively low for a bookshelf speaker, which means the tweeter takes over at the upper edge of the vocal range rather than in the middle of it. This benefits coherence: the tweeter handles the upper octaves of the voice and the harmonics of instruments without being asked to reproduce the fundamental frequencies that give voices their body and instruments their weight. Stereophile's measurement session found horizontal dispersion to be broad and well-controlled, supporting a wide listening window with stable center imaging.

The 1-inch aluminum dome tweeter uses a soft rubber suspension — aluminum domes can develop a high-frequency breakup resonance that produces harshness if not properly controlled, and the soft rubber surround damps this mode. The result, confirmed by Stereophile's measurement, is a tweeter output that is "respectably flat" through the high-frequency range and integrates smoothly with the woofer handoff.

The Wide Baffle and the Riser Base

The Model Three's 12.25-inch cabinet width is wide for a bookshelf speaker — wider than most competitors at this price by a meaningful margin. The wider baffle pushes the diffraction step — the frequency at which sound begins to wrap around the cabinet edges — lower in frequency, reducing midrange interference from edge reflections and producing more controlled, consistent dispersion. This is the same acoustic rationale behind the Model Five's and Model Seven's wide baffles, scaled to the bookshelf format. The practical result, noted by multiple reviewers, is imaging that is unusually stable and precise for a compact speaker, and a soundstage that is wider and deeper than the physical size of the cabinet would suggest.

The 8-degree slant riser base is included with every purchase — it is not an optional accessory. It serves a specific acoustic purpose: tilting the baffle upward by 8 degrees points the drivers toward the ears of a seated listener when the speakers are placed at typical bookshelf or stand height. This improves high-frequency extension at the listening position and ensures time alignment between the woofer and tweeter arrives at the correct axis. The base is built from 14-gauge powder-coated steel — it is rigid, non-resonant, and heavy enough to provide a stable, inert platform. The user manual specifies placement between 15 and 60 centimeters from the rear wall, and a minimum of 60 centimeters from room corners — practical guidance that reflects the Model Three's flexibility rather than demanding precision placement.

The Acoustic Balance Control

The three-position Acoustic Balance Control on the rear panel adjusts output above 400 Hz. The High position is the neutral reference — the speaker's designed response with no attenuation. Mid reduces output above 400 Hz by approximately 1.5 dB, and Low reduces it by approximately 3.0 dB. The purpose is to adapt the speaker to its acoustic environment without requiring room treatment or equalization. In a reflective room — one with hard floors, minimal soft furnishings, and large glass surfaces — the accumulated mid and high-frequency energy at the listening position can tilt the perceived tonal balance bright. The Mid or Low position corrects for this. Stereophile's measurement confirmed that switching from Hi to Lo also raises the measured impedance in the midrange, making the speaker marginally easier to drive in live rooms where the attenuation switch is most useful.

How It Compares: Model Three vs. KLH Model Five

The KLH Model Five is the three-way acoustic suspension floorstander that the Model Three was designed alongside. The Model Five uses a 10-inch woofer in a larger sealed cabinet, producing more bass extension and higher output capability in large rooms. Thomas J. Norton of Sound & Vision, who reviewed both, put the comparison directly: the Model Five offers more bass extension, but "if you add a subwoofer, the Model 3 offers similarly high performance, and the money saved vs. the Model 5s can go to your subwoofer fund." For a listener with a smaller room where the Model Five's size would be disproportionate, or for anyone building a 2.1 system with a quality subwoofer, the Model Three is not a significant step down from the Model Five in any audible respect other than deep bass extension. Stereophile measured −10 dB extension at 35 Hz — in a real room with boundary reinforcement, the practical bass response of the Model Three is meaningfully lower than its anechoic spec.

Key Specifications

• Type: Two-way acoustic suspension (sealed) bookshelf loudspeaker
• Woofer: 8" pulp-paper cone; reverse-roll rubber surround; 1.5" flat-wire voice coil; die-cast aluminum frame; aluminum flux stabilizing ring
• Tweeter: 1" aluminum dome with soft rubber suspension
• Crossover Frequency: 1,500 Hz (2nd-order electro-acoustic, 12 dB/octave); 13-component network with iron-core inductors and Mylar capacitors
• Frequency Response: 46 Hz–20 kHz (±3 dB)
• Low-Frequency Extension: −10 dB at 35 Hz
• Sensitivity: 85 dB (2.83V/1m, free field); ~88 dB in-room
• Impedance: 6Ω nominal; 3.7Ω minimum (at 320 Hz)
• Power Handling: 150W RMS continuous; 600W peak
• Recommended Amplifier Power: 30–150W
• In-Room Maximum SPL: 108 dB
• Maximum Output at 45 Hz: 101 dB
• Horizontal Dispersion: 140°
• Acoustic Balance Control: 3-position; 0 / −1.5 / −3.0 dB above 400 Hz (High/Mid/Low)
• Cabinet: Structurally reinforced ¾" MDF
• Inputs: Gold-plated 5-way binding posts
• Grille: Magnetic attachment; low-profile; zinc-cast vintage KLH logo
• Riser Base: Included; 8-degree slant; powder-coated 14-gauge steel
• Dimensions (without base): 12.25"W × 19"H × 10.5"D
• Dimensions (with base): 12.25"W × 28.25"H × 11.5"D
• Weight: 29 lbs each (without base); 36 lbs each (with base)
  
• Sold: As pairs
• Warranty: 10 years parts and labor (KLH Audio USA)

Why Buy From All Elite Audio

All Elite Audio is an authorized KLH dealer carrying the Model Three alongside the rest of KLH's Model Collection Series. We can demonstrate the Model Three in a real system context and discuss whether it is the right speaker for your room and listening habits — or whether the Model Five or Model Seven better fits your situation. The Model Three is a speaker worth hearing, and the conversation about which KLH model suits your space is one we enjoy.

Call 443-402-5055, text 443-402-5064, or visit us at 1921 York Rd, Timonium, MD 21093.

Frequently Asked Questions

What is the KLH Model Three and how does it fit into the KLH Model Collection?

The Model Three is the compact bookshelf speaker in KLH's Model Collection Series, which currently includes the Model Three, Model Five, and Model Seven. All three share the acoustic suspension sealed enclosure design, wide-baffle cabinet philosophy, real-wood veneer construction, 8-degree slant riser bases, and three-position Acoustic Balance Controls. The Model Three uses an 8-inch woofer in a bookshelf-sized cabinet; the Model Five uses a 10-inch woofer in a larger floorstander; and the Model Seven uses a 13-inch woofer in a three-way flagship floorstander. The Model Three was designed by KLH chief engineer Kerry Geist — who spent 32 years at Klipsch before joining KLH — and launched in 2022 to wide critical praise including a full review in Stereophile.

What is acoustic suspension and why does KLH use it instead of a ported design?

Acoustic suspension is a sealed-cabinet design in which the air inside the enclosure acts as an air spring — providing the dominant restoring force for the woofer cone. Because air behaves more linearly than most mechanical suspensions over large excursions, the cone moves more accurately, producing lower distortion and tighter, more natural-sounding bass. The rolloff below resonance is gradual rather than steep, so the speaker continues to produce useful low-frequency output below its rated specification rather than cutting off sharply. Ported designs tune a port to boost output at a specific bass frequency, which can produce impressive specifications but also a characteristic tuning-peak resonance and a steep rolloff below it. KLH uses acoustic suspension because it aligns with the design's goal of accurate, linear bass reproduction — the kind that sounds like real bass rather than amplified low frequencies.

Is the Model Three really a bookshelf speaker, or does it need a stand?

KLH calls it a "stand-mounted bookshelf speaker" — it can be placed on a bookshelf, a credenza, or a dedicated speaker stand, and it works in all three positions. The included 8-degree slant riser base is the optimal placement: it raises the speaker to a height that aligns the tweeter more closely with seated ear height and tilts the baffle toward the listening position, improving both high-frequency extension on-axis and the time alignment between woofer and tweeter. On a bookshelf, the speaker performs well but the geometry may not be ideal depending on the shelf height. On a dedicated stand at approximately 24–28 inches, with the riser base installed, the Model Three is at its best. The riser is included with every pair — it is not an optional extra.

How much bass does the Model Three actually produce?

More than its size would suggest. KLH specifies frequency response of 46 Hz ±3 dB and extension to −10 dB at 35 Hz. Stereophile's measurements confirmed these figures to within close tolerances. In a real listening room, boundary reinforcement from the floor and rear wall adds useful low-frequency energy, particularly when the speaker is placed within the recommended 15–60 cm from the rear wall, effectively extending the in-room bass below the anechoic spec. The sealed acoustic suspension topology produces a gradual rolloff rather than the steep post-port-tuning cutoff of a ported design, which means bass content below 46 Hz is attenuated gradually rather than eliminated — it is quieter, not absent. For a subwoofer-free system in a small to medium room, the Model Three's bass is sufficient for most music. For large rooms, film soundtracks, or listeners who want deep bass extension, adding a quality subwoofer crossed over in the 60–80 Hz range is the recommended approach, and the money saved versus the Model Five can fund a meaningful subwoofer purchase.

What amplifier do I need for the Model Three?

KLH recommends 30–150 watts per channel. The 85 dB free-field sensitivity (approximately 88 dB in-room) makes the Model Three moderately easy to drive — not as efficient as a horn-loaded design, but not unusually demanding either. The 6-ohm nominal impedance with a minimum of 3.7 ohms at 320 Hz means the amplifier sees a load below 4 ohms in a specific narrow frequency band. Confirm that your amplifier is comfortable with 4-ohm loads before connecting. A quality integrated amplifier of 50–100 watts per channel into 6–8 ohms — which covers a very wide range of products — will drive the Model Three without difficulty. Parasound's HINT 6 and Halo A23+ with a quality preamplifier are natural and well-matched combinations that we carry and can demonstrate.

How does the Model Three compare to the KLH Model Five?

The Model Five is a two-way acoustic suspension floorstander with a 10-inch woofer in a larger cabinet, producing more bass extension and higher maximum output in large rooms. Both use the same 1-inch aluminum dome tweeter, the same acoustic suspension principle, the same wide-baffle architecture, and the same Acoustic Balance Control. In terms of midrange clarity, imaging precision, and tonal character, the two speakers are closely related — they share a design philosophy and chief engineer. The meaningful differences are in bass extension (the Model Five reaches lower) and room suitability (the Model Three is better suited to smaller spaces and bookshelf placement). Sound & Vision reviewed both and found that with a subwoofer added, the Model Three performs at a comparable level to the Model Five in most respects, with the price difference potentially funding a quality subwoofer.

Why does the Model Three image so well for a small speaker?

Several design choices work together to produce the Model Three's unusually stable and wide soundstage. The 12.25-inch-wide baffle is broader than most bookshelf speakers, which pushes the diffraction step lower in frequency and reduces edge-reflection interference in the midrange — the frequency range most critical to imaging. The 140-degree horizontal dispersion is wide and controlled, meaning the speaker produces a coherent acoustic image over a large listening window rather than only from a narrow sweet spot. The 8-degree slant riser base aligns the tweeter axis toward the listening position, ensuring that the high-frequency detail that defines spatial placement arrives at the correct angle. Reviewers have consistently described the Model Three's imaging as exceptional for its size and price, with one reviewer citing "Focal-level" center imaging and "off the charts" dispersion.

Can the Model Three be used as a rear or surround channel speaker in a home theater?

Yes, and it is a natural choice for that role. The wide dispersion and controlled off-axis response produce consistent sound across a wide area, which is valuable for surround channels that need to envelop listeners at different seating positions. The acoustic suspension design means placement close to the rear wall is practical without bass quality penalties — a frequent constraint for surround speakers in furnished rooms. Matching the Model Three with a Model Five or Model Seven for front channels creates a coherent KLH acoustic suspension system throughout. For multichannel configurations, an amplifier with per-channel gain control — such as the Parasound A52+ or A31 — allows precise level matching between speaker positions.

What makes the woofer in the Model Three different from a standard bookshelf speaker woofer?

Most bookshelf speaker woofers at this price use stamped steel frames, standard round-wire voice coils, and conventional mechanical suspensions designed for ported enclosure operation. The Model Three's 8-inch woofer uses a die-cast aluminum frame specifically engineered for the high-excursion demands of a sealed acoustic suspension enclosure — sealed designs require longer woofer travel than ported designs to achieve comparable bass output, and the frame and suspension must accommodate that travel without mechanical stress or distortion. The 1.5-inch flat-wire voice coil packs more conductor turns in the same radial space as a round-wire coil, increasing motor efficiency. An aluminum flux stabilizing ring in the magnet assembly reduces nonlinear distortion during large excursions. These are engineering choices associated with professional and high-end woofer designs, applied to a bookshelf speaker at this price — which is part of why the Model Three's bass quality exceeds what its specifications alone would suggest.

What do reviewers say about the Model Three's sound?

The critical consensus is consistent and unusually enthusiastic. Stereophile described it as having "fun and refined audiophile sound" with "vitality, confidence, and hope for the future," concluding it was "one of the best deals and best-kept secrets in audio." Sound & Vision said it "offers a unique blend of superb sound, an included stand that will allow it to perform at its best, adjustability, and a unique, vintage look with up-to-date audio performance." A German reviewer described it as delivering "an astonishingly spacious and finely differentiated sound image" that "mastered the fine line between warm musicality and analytical precision with ease." Stereonet awarded it the Applause Award. These reviews span publications across North America and Europe — the praise is not regional or niche, and it covers a speaker that has been in production long enough for reviewers to assess rather than simply preview.

Where can I buy the KLH Model Three and hear it?

All Elite Audio at 1921 York Rd, Timonium, MD 21093 is an authorized KLH dealer. We carry the KLH Model Collection Series and can demonstrate the Model Three in the context of a complete system. Call 443-402-5055, text 443-402-5064, or stop in.