Short answer: the Paradigm Monitor SE Atom for better sound quality, the Pioneer SP-BS22-LR (Philharmonic AAM Mod) for the lower price. The Paradigm Monitor SE Atom ranks #26 of 56 bookshelf speakers at $318. The Pioneer SP-BS22-LR (Philharmonic AAM Mod) ranks #33 at $168, $150 cheaper.
The case for the Paradigm Monitor SE Atom: Good, consistent directivity across the on-axis, listening-window, and off-axis curves makes the Atom easier to equalize and less room-dependent than many budget speakers. The tradeoff: On-axis response is uneven out of the box, with a 2-4kHz dip followed by a peak and a resonance around 15kHz that the reviewer said gives it a bright, “showroom” voicing without EQ correction.
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 Paradigm Monitor SE Atom 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
| Paradigm Monitor SE Atom | Pioneer SP-BS22-LR (Philharmonic AAM Mod) | |
|---|---|---|
| Price | $318 | $168 |
| Ranked | #26 of 56 in Medium Size Bookshelf Speakers | #33 of 56 in Medium Size Bookshelf Speakers |
| Bass Extension (-3dB) | 82Hz (measured, Audio Science Review) | 78Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 62Hz (measured, Audio Science Review) | 60Hz (measured, Audio Science Review) |
| Drivers | 1" X-PAL aluminum dome tweeter (ferrofluid, PPA lens), 5.5" mineral-filled polypropylene mid/bass | 1x 4" curvilinear-cone woofer (stock Pioneer), 1x Peerless BC25TG15 1" silk dome tweeter (replacement) |
| Dimensions | 12.75H x 7.125W x 11D in | 12.6"H x 7.1"W x 8.5"D (320.0 x 180.0 x 215.0 mm) |
| Weight | 11.9 lbs / 5.4 kg each | 9 lbs / 4.1 kg |
| Frequency Response | 61Hz - 21kHz +/-3dB (Manufacturer specified) | - |
| Sensitivity | 85dB (2.83V/1m, measured, Audio Science Review) | 83dB (2.83V/1m, measured by Audio Science Review) |
| Impedance | 8 ohms | 8 ohms nominal (approx. 5 ohms minimum, measured by Audio Science Review) |
| Power Handling | 15-100W recommended | - |
| Woofer Cabinet | ported, rear | ported, rear |
| Crossover Frequency | - | 3000Hz |
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The Two Speakers In Full
Paradigm Monitor SE Atom: $318 Amazon
Pros: Good, consistent directivity across the on-axis, listening-window, and off-axis curves makes the Atom easier to equalize and less room-dependent than many budget speakers. Bass tuning is well judged, letting the woofer play loud on demanding tracks without bottoming out even without a subwoofer. Paradigm’s NRC research pedigree shows in the horizontal and vertical dispersion measurements.
Cons: On-axis response is uneven out of the box, with a 2-4kHz dip followed by a peak and a resonance around 15kHz that the reviewer said gives it a bright, “showroom” voicing without EQ correction. There’s no meaningful bass extension for full-range use, so a subwoofer is effectively required for anything beyond desktop or near-field listening.
Full Paradigm Monitor SE Atom review and specifications →
| Bass Extension (-10dB) | 62Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 82Hz (measured, Audio Science Review) |
| Dimensions | 12.75H x 7.125W x 11D in |
| Drivers | 1" X-PAL aluminum dome tweeter (ferrofluid, PPA lens), 5.5" mineral-filled polypropylene mid/bass |
| Frequency Response | 61Hz - 21kHz +/-3dB (Manufacturer specified) |
| Impedance | 8 ohms |
| Power Handling | 15-100W recommended |
| Sensitivity | 85dB (2.83V/1m, measured, Audio Science Review) |
| Weight | 11.9 lbs / 5.4 kg each |
| Woofer Cabinet | ported, rear |
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- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Paradigm Monitor SE Atom vs Sony SS-CS5 M2
- Paradigm Monitor SE Atom vs ELAC Debut 2.0 B5.2
- Paradigm Monitor SE Atom vs Dynaudio Emit M10
- Paradigm Monitor SE Atom vs JBL Studio 530
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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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