Short answer: the ELAC Debut 3.0 DF63 for better sound quality, the Polk T50 for the lower price. The ELAC Debut 3.0 DF63 ranks #35 of 68 floorstanding speakers at $649. The Polk T50 ranks #55 at $249, $400 cheaper.
What the Polk T50 offers: Pretty deep bass for the price. Distortion at 86dB SPL/1m is reasonably controlled outside a narrow spike around 250Hz. The reviewer notes performance is “not too bad for a budget speaker” once the two main tonal issues are addressed with EQ. Watch for: 5dB peak at 1khz, 4dB bright top end from 11khz on up. Just okay vertical off axis. Impedance and phase show several resonances between 200Hz-1kHz, with a minimum impedance of 4.2 ohms. Distortion rises substantially at 96dB SPL/1m across the midrange, with repeated peaks between 100Hz-2kHz.
What the ELAC Debut 3.0 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 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. 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. 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.
Buy the Polk T50 if the price matters more than sound quality. Buy the ELAC Debut 3.0 DF63 if sound quality matters more than the price.
If sound quality matters at all to you, skip the Polk T50. It ranks near the bottom of the 68 floorstanding speakers, so look higher up the list instead.
Specifications Side By Side
| Polk T50 | ELAC Debut 3.0 DF63 | |
|---|---|---|
| Price | $249.00 | $649.00 |
| Ranked | #55 of 68 in Large Size Floorstanding Speakers | #35 of 68 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 38Hz (measured, Audio Science Review) | 29Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 47Hz (measured, Audio Science Review) | 71Hz (measured, Erin’s Audio Corner) |
| Impedance | 4 ohms nominal (4.2 ohms minimum, measured by Audio Science Review) | 6 ohms nominal (3.4 ohms minimum, measured, Erin’s Audio Corner) |
| Drivers | 2x 6.5" bi-laminate paper cone woofers, 1x 1" Terylene dome tweeter + 2x 8" passive bass radiators | Two 6.5" Aramid Fiber woofer, 6.5" Aramid Fiber midrange, 1" Aluminum Dome tweeter |
| Weight | 75.4 lbs / 34.2 kg | 58.2 lbs / 26.4 kg each |
| Sensitivity | 86.3dB (2.83V/1m, measured by Audio Science Review) | 86.6dB (measured, Erin’s Audio Corner) |
| Dimensions | 40.4"H x 9.3"W x 12.5"D (1026.2 x 235.0 x 317.5 mm) | 43.1"H x 7.7"W x 10.6"D (1094.7 x 195.6 x 269.2 mm) |
| Woofer Cabinet | passive radiator | ported, rear |
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- Polk Reserve R500 vs Definitive Technology BP-9020
- Polk Reserve R500 vs Linkwitz Lab LXmini
- ELAC Debut 3.0 DF63 vs Polk Audio XT60
- Polk T50 vs Polk Reserve R500
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The Two Speakers In Full
Polk T50: $249.00 Amazon eBay
Pros: Pretty deep bass for the price. Distortion at 86dB SPL/1m is reasonably controlled outside a narrow spike around 250Hz. The reviewer notes performance is “not too bad for a budget speaker” once the two main tonal issues are addressed with EQ.
Cons: 5dB peak at 1khz, 4dB bright top end from 11khz on up. Just okay vertical off axis. Impedance and phase show several resonances between 200Hz-1kHz, with a minimum impedance of 4.2 ohms. Distortion rises substantially at 96dB SPL/1m across the midrange, with repeated peaks between 100Hz-2kHz.
Full Polk T50 review and specifications →
| Bass Extension (-10dB) | 38Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 47Hz (measured, Audio Science Review) |
| Dimensions | 40.4"H x 9.3"W x 12.5"D (1026.2 x 235.0 x 317.5 mm) |
| Drivers | 2x 6.5" bi-laminate paper cone woofers, 1x 1" Terylene dome tweeter + 2x 8" passive bass radiators |
| Impedance | 4 ohms nominal (4.2 ohms minimum, measured by Audio Science Review) |
| Sensitivity | 86.3dB (2.83V/1m, measured by Audio Science Review) |
| Weight | 75.4 lbs / 34.2 kg |
| Woofer Cabinet | passive radiator |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
ELAC Debut 3.0 DF63: $649.00 Amazon eBay
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 Debut 3.0 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 |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- ELAC Debut 3.0 DF63 vs Polk Reserve R500
- ELAC Debut 3.0 DF63 vs PSB Imagine T65
- ELAC Debut 3.0 DF63 vs Linkwitz Lab LXmini
- ELAC Debut 3.0 DF63 vs Q Acoustics 5040
- ELAC Debut 3.0 DF63 vs Polk Audio Reserve R700
- ELAC Debut 3.0 DF63 vs Definitive Technology BP-9020
- ELAC Debut 3.0 DF63 vs Infinity Primus 360
- ELAC Debut 3.0 DF63 vs Emotiva Airmotiv T2+
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