Klipsch Forte IV vs Revel Concerta2 F35

Last updated: September 24, 2026

Short answer: the Revel Concerta2 F35 for a modern waveguide design, the Klipsch Forte IV for a heritage three-way. The F35 is a two-and-a-half-way, four-driver design with a 1” aluminum dome tweeter on a waveguide and a 5.25” mid-range, but its F3 of 61Hz and F10 of 39Hz mean a subwoofer is needed. The Forte IV mates a 1” titanium tweeter and 1.75” compression driver to a 12” woofer, and it is not the forward, bright Klipsch of reputation.

Klipsch Forte IV vs Revel Concerta2 F35

What the Klipsch Forte IV gets right: Three-way heritage design: a 1” titanium tweeter and 1.75” compression driver for the midrange mated to a 12” woofer. The tradeoff: Contrary to the classic Klipsch reputation for being forward and bright.

On the Revel Concerta2 F35 side: Two-and-a-half-way, four-driver design: a 1” aluminum dome tweeter on a waveguide, a 5.25” mid-range. The tradeoff: F3 of 61Hz and F10 of 39Hz mean a subwoofer is needed for real bass extension.

Buy the Revel Concerta2 F35. It is rated higher for sound quality than the Klipsch Forte IV and costs less, so the other one has nothing left to offer.

Looking for alternatives? See the complete Passive Home rankings.

Specifications Side By Side

Klipsch Forte IV Revel Concerta2 F35
Price$5,499.98 per pair$900 per pair
Ranked#41 of 71 in Large Size Floorstanding Speakers#23 of 71 in Large Size Floorstanding Speakers
Bass Extension (-10dB)39Hz (measured, Erin's Audio Corner)50Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)82Hz (measured, Erin's Audio Corner)70Hz (measured, Erin's Audio Corner)
Sensitivity93.8dB (measured average, Erin's Audio Corner; manufacturer rates 99dB in-room / ~94dB anechoic)89.4dB (measured, Erin's Audio Corner; 90dB manufacturer specified)
Drivers1x 12" (305mm) fiber-composite woofer + 15" passive radiator, 1x 1.75" compression driver midrange on horn, 1x 1" titanium compression tweeter on horn3x 5.25" deep anodized aluminum cone woofers, 1" Aluminum Tweeter
Weight117.3 lbs (53.2 kg)41 lbs (18.6 kg) each
Woofer Cabinetpassive radiatorported, rear
Impedance8 ohms6 ohms nominal (3.8 ohms minimum, measured by Erin's Audio Corner)
Dimensions36"H x 16.5"W x 13"D (914.4 x 419.1 x 330.2 mm)40.3"H x 8.4"W x 12.2"D (1023.6 x 213.4 x 309.9 mm)
Spinorama Preference Score3.785.35
Spinorama Preference Score with Perfect Sub5.727.30
DIY KitNoNo

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The Two Speakers In Full

Klipsch Forte IV: $5,499.98 per pair Amazon Crutchfield eBay

Klipsch Forte IV ranking card

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.

Bass Extension (-10dB)39Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)82Hz (measured, Erin's Audio Corner)
DIY KitNo
Dimensions36"H x 16.5"W x 13"D (914.4 x 419.1 x 330.2 mm)
Drivers1x 12" (305mm) fiber-composite woofer + 15" passive radiator, 1x 1.75" compression driver midrange on horn, 1x 1" titanium compression tweeter on horn
Impedance8 ohms
Sensitivity93.8dB (measured average, Erin's Audio Corner; manufacturer rates 99dB in-room / ~94dB anechoic)
Spinorama Preference Score3.78
Spinorama Preference Score with Perfect Sub5.72
Weight117.3 lbs (53.2 kg)
Woofer Cabinetpassive radiator

Revel Concerta2 F35: $900 per pair Crutchfield eBay

Revel Concerta2 F35 ranking card

Pros: Two-and-a-half-way, four-driver design: a 1” aluminum dome tweeter on a waveguide, a 5.25” mid-range, and dual 5.25” mid-bass drivers in a rear-ported cabinet. Measured sensitivity of 89.4dB closely matches the 90dB spec, and distortion looks good at both 86dB and 96dB, holding up well even with a high-pass filter applied. At its sale price (around $900/pair, down from full retail), the reviewer calls it a “no-brainer,” undercutting comparable budget floorstanders like the ELAC DF63. Frequency response and directivity mismatches are largely EQ-able, since most of what shows up in measurements traces to physical tweeter/mid-range separation rather than a fundamental flaw. Compression is fairly well controlled for the price - about 1dB of loss around 100Hz under long-term compression, described as “par for the course” at this cost. Measured bass extension of 70Hz (-3dB), with a measured sensitivity of 89.4dB.

Cons: F3 of 61Hz and F10 of 39Hz mean a subwoofer is needed for real bass extension. A dip in the lower midrange/2-3kHz region reduces attack and detail, and a peak around 5kHz adds some edge and sibilance in the lower treble. A peak in off-axis energy around 3kHz reflects off sidewalls at roughly 60-70° off-axis and arrives louder than the direct sound - this specific issue can’t be fixed with EQ (boosting the direct sound would boost the stronger reflection too) and would need acoustic absorption to properly address, though the reviewer considers it a minor, optional fix at this price. A couple of minor resonances appear in the impedance plot, including one around 300Hz that may partly explain a subtle sense of vocal warmth noticed in listening, though it’s more likely room-related. Minimum impedance around 3.8 ohms. Short-term compression testing shows some increased distortion in the tweeter and higher-frequency compression at loud output.

Bass Extension (-10dB)50Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)70Hz (measured, Erin's Audio Corner)
DIY KitNo
Dimensions40.3"H x 8.4"W x 12.2"D (1023.6 x 213.4 x 309.9 mm)
Drivers3x 5.25" deep anodized aluminum cone woofers, 1" Aluminum Tweeter
Impedance6 ohms nominal (3.8 ohms minimum, measured by Erin's Audio Corner)
Sensitivity89.4dB (measured, Erin's Audio Corner; 90dB manufacturer specified)
Spinorama Preference Score5.35
Spinorama Preference Score with Perfect Sub7.30
Weight41 lbs (18.6 kg) each
Woofer Cabinetported, rear