Short answer: the Klipsch Forte IV. It ranks #42 of 73 floorstanding speakers by sound quality, rated 4.0/5, at $5,499.98; the Atlantic Technology 8600eLR ranks #65, rated 3.1/5, and costs $5,700, which makes this an easy call rather than a real tradeoff.
What the Klipsch Forte IV does well: Three-way heritage design: a 1” titanium tweeter and 1.75” compression driver for the midrange mated to a 12” woofer, plus a 15” passive radiator for extra bass reinforcement. Watch for: Contrary to the classic Klipsch reputation for being forward and bright, this model is actually somewhat recessed in the 1.5-4kHz “presence” region, which can make some tracks sound dull or lacking in detail.
What the Atlantic Technology 8600eLR does well: A sealed high-output flagship tower with four 8-inch woofers, dual 5.25-inch midranges, 91dB sensitivity and boundary/HF adjustment controls. The catch: The raw preference score is only 2.65, making a subwoofer and correction essential despite the massive cabinet.
Buy the Klipsch Forte IV. It is rated higher for sound quality than the Atlantic Technology 8600eLR and costs less, so only choose the other one for a particular feature it does better.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Klipsch Forte IV | Atlantic Technology 8600eLR | |
|---|---|---|
| Price | $5,499.98 per pair | $5,700 per pair |
| Ranked | #42 of 73 in Large Size Floorstanding Speakers | #65 of 73 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) | - |
| Bass Extension (-3dB) | 82Hz (measured, Erin’s Audio Corner) | 68.8Hz (measured, Erin’s Audio Corner via spinorama.org) |
| Sensitivity | 93.8dB (measured average, Erin’s Audio Corner; manufacturer rates 99dB in-room / ~94dB anechoic) | 91dB |
| Drivers | 1x 12” (305mm) fiber-composite woofer + 15” passive radiator, 1x 1.75” compression driver midrange on horn, 1x 1” titanium compression tweeter on horn | 1-inch aluminum-magnesium tweeter, dual 5.25-inch midranges, four 8-inch woofers |
| Weight | 117.3 lbs (53.2 kg) | 93.3 lbs (42.3 kg) each |
| Woofer Cabinet | passive radiator | - |
| Impedance | 8 ohms | 6 ohms |
| Dimensions | 36”H x 16.5”W x 13”D (914.4 x 419.1 x 330.2 mm) | 51.7H x 10.9W x 11.4D in |
| Spinorama Preference Score | 3.78 | 2.65 |
| Spinorama Preference Score with Perfect Sub | 5.72 | 5.26 |
| DIY Kit | No | No |
| Enclosure | - | Sealed 3-way floorstander |
| Frequency Response | - | 50Hz-25kHz +/-2dB |
Related Speaker Comparisons
More worthwhile head-to-heads for Klipsch Forte IV:
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- KEF Blade Two Meta vs Klipsch Forte IV
- Klipsch Forte IV vs MoFi SourcePoint V10 Master Edition
- Klipsch Forte IV vs MoFi SourcePoint 888
- Klipsch Forte IV vs Revel F328Be
Prices on this page were last checked September 29, 2026 at 3:43 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
Klipsch Forte IV: $5,499.98 per pair Amazon Crutchfield eBay
Pros: Three-way heritage design: a 1” titanium tweeter and 1.75” compression driver for the midrange mated to a 12” woofer, plus a 15” passive radiator for extra bass reinforcement. Genuinely resonance-free cabinet, a clear improvement over the notably boomy, resonant Heresy 4 in the same lineup. Surprisingly wide, expansive soundstage that beat both the Heresy 4 and a KEF LS50 Wireless 2 in direct comparison: images occasionally appeared several feet outside the physical speaker location. Deeper bass extension than the Heresy 4 (F3 of 82Hz, about 10Hz lower). Distortion measures well below 1% at 86dB and stays mostly within 1% even at 96dB. Comes as a factory-matched serial-numbered pair, backed by an unusually generous 10-year warranty. Mostly above 4 ohms impedance, so it’s compatible with AVRs, solid-state, or tube amplifiers. More neutral overall than other Klipsch models the reviewer has tested, making it a reasonable pick for listeners who already like the “Klipsch sound” but want something more balanced. Measured bass extension of 82Hz (-3dB), with a measured sensitivity of 93.8dB.
Cons: Contrary to the classic Klipsch reputation for being forward and bright, this model is actually somewhat recessed in the 1.5-4kHz “presence” region, which can make some tracks sound dull or lacking in detail. A peak around 6kHz reads as sibilant and “painful” when seated exactly on the tweeter axis; sitting a bit above that axis reduces it somewhat. Klipsch’s marketed 99dB sensitivity figure is an in-room rating that assumes 3-6dB of boundary gain: anechoic sensitivity measures closer to 94dB, which the manufacturer does disclose but can still mislead buyers comparing spec sheets. Radiation width isn’t consistent across all frequencies: a noticeable notch around 2-3kHz interrupts otherwise wide dispersion, which can cause a fundamental tone and its harmonics to image in slightly different places in the soundstage. Uses shallow low-pass crossover slopes (despite Klipsch’s steep-crossover marketing, which applies only to the high-pass side), likely contributing to some of the measured dips and possible cone-breakup artifacts. Some compression shows up around the midrange crossover point at very high output (102dB), though likely only audible at extreme volumes. At around $5500/pair, a significant investment, and still needs a subwoofer for material extending below about 50Hz.
Full Klipsch Forte IV review and specifications →
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 82Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 36”H x 16.5”W x 13”D (914.4 x 419.1 x 330.2 mm) |
| Drivers | 1x 12” (305mm) fiber-composite woofer + 15” passive radiator, 1x 1.75” compression driver midrange on horn, 1x 1” titanium compression tweeter on horn |
| Impedance | 8 ohms |
| Sensitivity | 93.8dB (measured average, Erin’s Audio Corner; manufacturer rates 99dB in-room / ~94dB anechoic) |
| Spinorama Preference Score | 3.78 |
| Spinorama Preference Score with Perfect Sub | 5.72 |
| Weight | 117.3 lbs (53.2 kg) |
| Woofer Cabinet | passive radiator |
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Atlantic Technology 8600eLR: $5,700 per pair Atlantic Technology eBay
Pros: A sealed high-output flagship tower with four 8-inch woofers, dual 5.25-inch midranges, 91dB sensitivity and boundary/HF adjustment controls. The local snapshot measures 58Hz extension and scores 5.26 with a subwoofer. Measured bass extension of 68.8Hz (-3dB).
Cons: The raw preference score is only 2.65, making a subwoofer and correction essential despite the massive cabinet. Each tower weighs over 90 pounds, and value is weak if two-channel neutrality is the main goal.
Full Atlantic Technology 8600eLR review and specifications →
| Bass Extension (-3dB) | 68.8Hz (measured, Erin’s Audio Corner via spinorama.org) |
|---|---|
| DIY Kit | No |
| Dimensions | 51.7H x 10.9W x 11.4D in |
| Drivers | 1-inch aluminum-magnesium tweeter, dual 5.25-inch midranges, four 8-inch woofers |
| Enclosure | Sealed 3-way floorstander |
| Frequency Response | 50Hz-25kHz +/-2dB |
| Impedance | 6 ohms |
| Sensitivity | 91dB |
| Spinorama Preference Score | 2.65 |
| Spinorama Preference Score with Perfect Sub | 5.26 |
| Weight | 93.3 lbs (42.3 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons