Short answer: the KEF Reference 203 for directivity, the Revel Concerta2 F35 for a currently available option. The Reference 203 manages on-axis linearity within about +/-3dB and directivity of roughly 55 degrees horizontally and 40-50 degrees vertically, but it is 20+ years old and secondhand only. The F35 is a two-and-a-half-way, four-driver design with a waveguide tweeter, yet its F3 of 61Hz and F10 of 39Hz mean a subwoofer is needed.
Buy the Revel Concerta2 F35, since the KEF Reference 203 is discontinued and only worth hunting down used.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| KEF Reference 203 | Revel Concerta2 F35 | |
|---|---|---|
| Price | $5,000 per pair Discontinued | $900 per pair |
| Ranked | #12 of 74 in Large Size Floorstanding Speakers | #19 of 74 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 37Hz (measured, Erin’s Audio Corner) | 50Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 51Hz (measured, Erin’s Audio Corner) | 70Hz (measured, Erin’s Audio Corner) |
| Dimensions | 42”H (1067H mm) | 40.3”H x 8.4”W x 12.2”D (1023.6 x 213.4 x 309.9 mm) |
| Impedance | 8 ohms nominal (3.6 ohms minimum, measured, Erin’s Audio Corner; 3.2 ohms per manufacturer spec) | 6 ohms nominal (3.8 ohms minimum, measured by Erin’s Audio Corner) |
| Sensitivity | 88dB (2.83V/1m, measured by Erin’s Audio Corner) | 89.4dB (measured, Erin’s Audio Corner; 90dB manufacturer specified) |
| Drivers | 1x 0.75” supertweeter, coaxial 1” dome tweeter + 6.5” midrange, 2x 6.5” woofers | 3x 5.25” deep anodized aluminum cone woofers, 1” Aluminum Tweeter |
| Weight | 58 lbs (26.3 kg) | 41 lbs (18.6 kg) each |
| Woofer Cabinet | Bass reflex, with switchable flat/cut/lifted bass ports for wall placement | ported, rear |
| Crossover Frequency | 400Hz, 2.7kHz, 15kHz | - |
| Frequency Response | 55Hz - 55kHz ±3dB (Manufacturer specified) | - |
| Recommended Power | 50-200W | - |
| Spinorama Preference Score | 5.83 | 5.35 |
| Spinorama Preference Score with Perfect Sub | 7.84 | 7.30 |
| DIY Kit | No | No |
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The Two Speakers In Full
KEF Reference 203: $5,000 per pair Discontinued eBay
Newer model: the KEF Reference 3 Meta, ranked lower, rated 4.6/5.
Pros: An unusually accomplished 4-way design for its era: excellent on-axis linearity (within about +/-3dB), genuinely good directivity both horizontally (~55 degrees) and vertically (~40-50 degrees), and an estimated in-room response that closely matches what the reviewer actually heard. Distortion is excellent: under 1% harmonic above 80Hz at both 86dB and 96dB, and multitone stays around 1% even at 96dB. Bass reaches a real F3 of 51Hz (F10 37Hz), with in-room extension into the low-mid-40s. The reviewer’s overall listening notes were essentially “nothing stood out bad or good”: a genuinely neutral, accurate speaker with a distinctive rounded-baffle look that avoids the diffraction issues a flat baffle this wide would normally have. Measured bass extension of 51Hz (-3dB), with a measured sensitivity of 88dB.
Cons: This is a 20+ year old, long-discontinued speaker only findable secondhand (Facebook Marketplace, Craigslist, audio forums): condition, driver matching, and component aging vary by unit, so audition before buying if at all possible. Demands a robust amplifier: impedance dips to about 3.6 ohms with an EPDR of 2.2 ohms. The small supertweeter shows minor breakup artifacts at the extremes of the vertical polar plot and some compression at very high output in the top octave, though neither was audible in normal listening.
Full KEF Reference 203 review and specifications →
| Bass Extension (-10dB) | 37Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 51Hz (measured, Erin’s Audio Corner) |
| Crossover Frequency | 400Hz, 2.7kHz, 15kHz |
| DIY Kit | No |
| Dimensions | 42”H (1067H mm) |
| Drivers | 1x 0.75” supertweeter, coaxial 1” dome tweeter + 6.5” midrange, 2x 6.5” woofers |
| Frequency Response | 55Hz - 55kHz ±3dB (Manufacturer specified) |
| Impedance | 8 ohms nominal (3.6 ohms minimum, measured, Erin’s Audio Corner; 3.2 ohms per manufacturer spec) |
| Recommended Power | 50-200W |
| Sensitivity | 88dB (2.83V/1m, measured by Erin’s Audio Corner) |
| Spinorama Preference Score | 5.83 |
| Spinorama Preference Score with Perfect Sub | 7.84 |
| Weight | 58 lbs (26.3 kg) |
| Woofer Cabinet | Bass reflex, with switchable flat/cut/lifted bass ports for wall placement |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Revel Concerta2 F35: $900 per pair Crutchfield eBay
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 of $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.
Full Revel Concerta2 F35 review and specifications →
| Bass Extension (-10dB) | 50Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 70Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 40.3”H x 8.4”W x 12.2”D (1023.6 x 213.4 x 309.9 mm) |
| Drivers | 3x 5.25” deep anodized aluminum cone woofers, 1” Aluminum Tweeter |
| Impedance | 6 ohms nominal (3.8 ohms minimum, measured by Erin’s Audio Corner) |
| Sensitivity | 89.4dB (measured, Erin’s Audio Corner; 90dB manufacturer specified) |
| Spinorama Preference Score | 5.35 |
| Spinorama Preference Score with Perfect Sub | 7.30 |
| Weight | 41 lbs (18.6 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Audio Science Review Revel Concerta2 F35 More from Audio Science Review →
- Erin’s Audio Corner: Revel F35 Review: Great Sound, Lower Price! More from Erin’s Audio Corner →
- Erin’s Audio Review Website Revel Concerta2 F35
- Audio Science Review Measurements (spinorama.org)
- Erin’s Audio Corner: You’ve Never Seen a Review Like This. Revel F35 Review (Part 1).
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