Short answer: the ELAC Debut 2.0 B5.2 for better sound quality, the Pioneer SP-BS22-LR (Philharmonic AAM Mod) for the lower price. The ELAC Debut 2.0 B5.2 ranks #24 of 56 bookshelf speakers at $329. The Pioneer SP-BS22-LR (Philharmonic AAM Mod) ranks #33 at $168, $161 cheaper.
What the ELAC Debut 2.0 B5.2 offers: Good horizontal directivity: the off-axis curves track the on-axis response closely, so the broad tonal error responds predictably to EQ. Watch for: Erin measured a broad +3dB step beginning around 1.5kHz; the resulting elevated upper range sounds tonally uneven even though it is not a narrow, sharp resonance.
What the Pioneer SP-BS22-LR (Philharmonic AAM Mod) gets right: This is Dennis Murphy’s “Affordable Accuracy Monitor” (AAM) mod of the discontinued. The catch: Some directivity error appears near the crossover frequency.
Buy the ELAC Debut 2.0 B5.2 if sound quality matters more than the price. Buy the Pioneer SP-BS22-LR (Philharmonic AAM Mod) if the price matters more than sound quality.
Specifications Side By Side
| ELAC Debut 2.0 B5.2 | Pioneer SP-BS22-LR (Philharmonic AAM Mod) | |
|---|---|---|
| Price | $329.00 | $168 |
| Ranked | #24 of 56 in Medium Size Bookshelf Speakers | #33 of 56 in Medium Size Bookshelf Speakers |
| Bass Extension (-10dB) | 40Hz (measured, Erin’s Audio Corner) | 60Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 60Hz (measured, Erin’s Audio Corner) | 78Hz (measured, Audio Science Review) |
| Dimensions | 13.4"H x 7.1"W x 9.2"D (341 x 180 x 234 mm) | 12.6"H x 7.1"W x 8.5"D (320.0 x 180.0 x 215.0 mm) |
| Impedance | 6 ohms nominal (manufacturer specified) | 8 ohms nominal (approx. 5 ohms minimum, measured by Audio Science Review) |
| Sensitivity | About 83dB after recommended EQ (measured, Erin’s Audio Corner; 86dB manufacturer specified) | 83dB (2.83V/1m, measured by Audio Science Review) |
| Drivers | 5.25" aramid-fiber woofer, 1" cloth-dome tweeter | 1x 4" curvilinear-cone woofer (stock Pioneer), 1x Peerless BC25TG15 1" silk dome tweeter (replacement) |
| Weight | 13 lbs / 5.9 kg each | 9 lbs / 4.1 kg |
| Woofer Cabinet | ported, front | ported, rear |
| Crossover Frequency | - | 3000Hz |
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The Two Speakers In Full
ELAC Debut 2.0 B5.2: $329.00 Amazon
Pros: Good horizontal directivity: the off-axis curves track the on-axis response closely, so the broad tonal error responds predictably to EQ. Erin demonstrated that a single high-shelf filter centered near 1.6kHz, about -2dB with Q near 2, substantially improves linearity. Moderate roughly +/-50-60 degree horizontal coverage balances room interaction and image focus. The front port makes close-to-wall placement practical. Erin measured F3 near 60Hz and F10 near 40Hz, useful extension for a compact 5.25-inch two-way. Harmonic distortion is mostly below 1% at 86dB/1m, and low-frequency distortion is better than its size might suggest. Compact cabinet and inexpensive pair pricing make it a workable EQ-assisted desktop or small-room system.
Cons: Erin measured a broad +3dB step beginning around 1.5kHz; the resulting elevated upper range sounds tonally uneven even though it is not a narrow, sharp resonance. Native response spans roughly -2.6 to +4dB around the mean, so this is not a neutral speaker without correction. Sensitivity is only about 83dB after correcting the shelf, demanding materially more amplifier voltage than ELAC’s 86dB specification implies. Vertical response changes substantially outside roughly +/-10 degrees of tweeter height. Dynamic compression is the larger limitation: at the highest sweep level it loses roughly 1-1.5dB through the midrange, and even the 86dB trace shows unusual nonlinearity that may involve crossover heating. At about 96dB, multitone distortion rises audibly around 600Hz; an 80-120Hz subwoofer crossover helps but does not turn it into a high-output design. Erin recommends the larger B6.2 instead when EQ is unavailable.
Full ELAC Debut 2.0 B5.2 review and specifications →
| Bass Extension (-10dB) | 40Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 60Hz (measured, Erin's Audio Corner) |
| Dimensions | 13.4"H x 7.1"W x 9.2"D (341 x 180 x 234 mm) |
| Drivers | 5.25" aramid-fiber woofer, 1" cloth-dome tweeter |
| Impedance | 6 ohms nominal (manufacturer specified) |
| Sensitivity | About 83dB after recommended EQ (measured, Erin's Audio Corner; 86dB manufacturer specified) |
| Weight | 13 lbs / 5.9 kg each |
| Woofer Cabinet | ported, front |
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- Links
- Reviews, Comparisons and Sound Samples
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Pioneer SP-BS22-LR (Philharmonic AAM Mod): $168
Pros: This is Dennis Murphy’s “Affordable Accuracy Monitor” (AAM) mod of the discontinued, budget Pioneer SP-BS22-LR: the stock tweeter is swapped for a Peerless BC25TG15 dome and a redesigned 3rd-order crossover is built to match it to the stock 4” woofer. CEA2034 spinorama shows only small variations from a flat on-axis response with some directivity error near the crossover, a marked improvement over the unmodified Pioneer, which the reviewer notes shows much more variation from flat. Distortion at 86dB SPL/1m is reasonably controlled above 200Hz, and tweeter distortion barely rises even at 96dB SPL/1m.
Cons: Some directivity error appears near the crossover frequency. Distortion climbs in the woofer’s range (below 200Hz) at both 86dB and 96dB SPL/1m. Minimum impedance dips to about 5 ohms with a couple of resonance peaks. This is a DIY project, not a finished retail product: Murphy sold ~$168 pre-built pairs for a while but no longer does, so it now requires sourcing a used/discontinued Pioneer SP-BS22-LR pair plus building the crossover and swapping the tweeter yourself. The mod itself is public domain, but there is no current turnkey way to buy this speaker.
Full Pioneer SP-BS22-LR (Philharmonic AAM Mod) review and specifications →
| Bass Extension (-10dB) | 60Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 78Hz (measured, Audio Science Review) |
| Crossover Frequency | 3000Hz |
| Dimensions | 12.6"H x 7.1"W x 8.5"D (320.0 x 180.0 x 215.0 mm) |
| Drivers | 1x 4" curvilinear-cone woofer (stock Pioneer), 1x Peerless BC25TG15 1" silk dome tweeter (replacement) |
| Impedance | 8 ohms nominal (approx. 5 ohms minimum, measured by Audio Science Review) |
| Sensitivity | 83dB (2.83V/1m, measured by Audio Science Review) |
| Weight | 9 lbs / 4.1 kg |
| Woofer Cabinet | ported, rear |
As an eBay Partner, we may be compensated if you make a purchase.
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- Reviews, Comparisons and Sound Samples
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