Short answer: the Revel Concerta2 F35 for better sound quality, the ELAC DF63 for the lower price. The Revel Concerta2 F35 ranks #17 of 54 floorstanding speakers at $900. The ELAC DF63 ranks #25 at $649, $251 cheaper.
What the Revel Concerta2 F35 offers: 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. Watch for: F3 of 61Hz and F10 of 39Hz mean a subwoofer is needed for real bass extension.
What the ELAC DF63 offers: Three-driver floorstanding layout: two 6” dedicated midbase drivers plus a separate 6” mid-range driver (confirmed by measuring different driver impedance/inductance) and a 1” dome tweeter, each woofer given its own stuffed… Watch for: A genuine measured resonance around 200-300Hz (visible in frequency response, impedance, and group delay) causes an audible “droning” coloration on female vocals.
Buy the Revel Concerta2 F35 if sound quality matters more than the price. Buy the ELAC DF63 if the price matters more than sound quality.
Specifications Side By Side
| Revel Concerta2 F35 | ELAC DF63 | |
|---|---|---|
| Price | $900 | $649.00 |
| Ranked | #17 of 54 in Large Size Floorstanding Speakers | #25 of 54 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 50Hz (measured, Erin’s Audio Corner) | 29Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 70Hz (measured, Erin’s Audio Corner) | 71Hz (measured, Erin’s Audio Corner) |
| Dimensions | 40.3"H x 8.4"W x 12.2"D (1023.6 x 213.4 x 309.9 mm) | 43.1"H x 7.7"W x 10.6"D (1094.7 x 195.6 x 269.2 mm) |
| Impedance | 6 ohms nominal (3.8 ohms minimum, measured by Erin’s Audio Corner) | 6 ohms nominal (3.4 ohms minimum, measured, Erin’s Audio Corner) |
| Sensitivity | 89.4dB (measured, Erin’s Audio Corner; 90dB manufacturer specified) | 86.6dB (measured, Erin’s Audio Corner) |
| Drivers | 3x 5.25" deep anodized aluminum cone woofers, 1" Aluminum Tweeter | Two 6.5" Aramid Fiber woofer, 6.5" Aramid Fiber midrange, 1" Aluminum Dome tweeter |
| Weight | 41 lbs / 18.6 kg each | 58.2 lbs / 26.4 kg each |
| Woofer Cabinet | ported, rear | ported, rear |
Related Speaker Comparisons
More useful head-to-heads from the same speaker class:
- Polk Audio Reserve R700 vs Polk Reserve R500
- Polk Reserve R500 vs Linkwitz Lab LXmini
- Polk Reserve R500 vs Magnepan LRS+
- Revel Concerta2 F35 vs Polk Reserve R500
- ELAC DF63 vs Polk Reserve R500
The Two Speakers In Full
Revel Concerta2 F35: $900 Crutchfield
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.
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) |
| 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) |
| Weight | 41 lbs / 18.6 kg each |
| Woofer Cabinet | ported, rear |
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- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Revel Concerta2 F35 vs Emotiva Airmotiv T2+
- Revel Concerta2 F35 vs Polk Audio Reserve R700
- Revel Concerta2 F35 vs Polk Reserve R500
- Revel Concerta2 F35 vs Revel F328Be
- Revel Concerta2 F35 vs MoFi SourcePoint 888
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ELAC DF63: $649.00 Amazon
Pros: Three-driver floorstanding layout: two 6” dedicated midbase drivers plus a separate 6” mid-range driver (confirmed by measuring different driver impedance/inductance) and a 1” dome tweeter, each woofer given its own stuffed chamber inside the cabinet. The dedicated midrange driver keeps distortion low even at higher output, avoiding the intermodulation grain typical of two-way bookshelf designs. The waveguide keeps high-frequency directivity well controlled, and overall horizontal directivity is good up to about 2kHz. Harmonic distortion looks good at both 86dB and 96dB, and multitone distortion stays below the reviewer’s 3% threshold. A shallow bass rolloff (F3 71Hz, F10 29Hz) lets it extend fairly low without a hard cutoff. Preferred by the reviewer over the similarly-priced Polk R500 (too much high-frequency narrowing, less neutral) and considered ahead of the Polk R700 as well.
Cons: A genuine measured resonance around 200-300Hz (visible in frequency response, impedance, and group delay) causes an audible “droning” coloration on female vocals. A mild peak around 10kHz makes shakers and similar high-frequency percussion jump too far forward in the mix; needed about 2dB of EQ to tame in testing. A dip in the 1-3kHz range gives the speaker a warm, slightly veiled character - the reviewer suspects the tweeter crossover point (around 2-3kHz) is set a bit high and could be lowered to fill this in. Directivity shows a noticeable handoff mismatch around 2.5kHz where the midrange driver hands off to the tweeter, though it’s minor at the -6dB point. Vertical directivity is narrower than horizontal, so listeners need to stay close to the tweeter axis. Low EPDR (about 1.5 ohms minimum) means a Class AB amplifier should be well-ventilated. Best positioned pointed directly at the listener and closer to the front wall - toeing it out into the room causes too much high-frequency rolloff.
Full ELAC DF63 review and specifications →
| Bass Extension (-10dB) | 29Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 71Hz (measured, Erin's Audio Corner) |
| Dimensions | 43.1"H x 7.7"W x 10.6"D (1094.7 x 195.6 x 269.2 mm) |
| Drivers | Two 6.5" Aramid Fiber woofer, 6.5" Aramid Fiber midrange, 1" Aluminum Dome tweeter |
| Impedance | 6 ohms nominal (3.4 ohms minimum, measured, Erin's Audio Corner) |
| Sensitivity | 86.6dB (measured, Erin's Audio Corner) |
| Weight | 58.2 lbs / 26.4 kg each |
| Woofer Cabinet | ported, rear |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons