Short answer: the JBL Stage 2 250B for better sound quality, the Pioneer SP-BS22-LR (Philharmonic AAM Mod) for the lower price. The JBL Stage 2 250B ranks #30 of 56 bookshelf speakers at $349.95. The Pioneer SP-BS22-LR (Philharmonic AAM Mod) ranks #33 at $168, $181.95 cheaper.
On the JBL Stage 2 250B side: Consistent, EQ-able dips in the frequency response mean the tonal issues are at least correctable if you’re willing to use equalization. Set against that: The reviewer was “even less enthusiastic” about this one than its disappointing floorstanding sibling.
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 JBL Stage 2 250B 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
| JBL Stage 2 250B | Pioneer SP-BS22-LR (Philharmonic AAM Mod) | |
|---|---|---|
| Price | $349.95 | $168 |
| Ranked | #30 of 56 in Medium Size Bookshelf Speakers | #33 of 56 in Medium Size Bookshelf Speakers |
| Bass Extension (-10dB) | 50Hz (measured, Erin’s Audio Corner) | 60Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 64Hz (measured, Erin’s Audio Corner) | 78Hz (measured, Audio Science Review) |
| Drivers | 1" anodized aluminum dome tweeter with HDI waveguide, 5.25" polycellulose woofer | 1x 4" curvilinear-cone woofer (stock Pioneer), 1x Peerless BC25TG15 1" silk dome tweeter (replacement) |
| Weight | 12.3 lbs / 5.6 kg (12.4 lb) per pair | 9 lbs / 4.1 kg |
| Sensitivity | 86dB (2.83V/1m, measured by Erin’s Audio Corner) | 83dB (2.83V/1m, measured by Audio Science Review) |
| Output Power | 75W RMS | - |
| Impedance | 6 ohms nominal, 3.3 ohms minimum (measured, Erin’s Audio Corner) | 8 ohms nominal (approx. 5 ohms minimum, measured by Audio Science Review) |
| Dimensions | 12.6"H x 7.9"W x 9.5"D (321.0 x 200.0 x 241.0 mm) | 12.6"H x 7.1"W x 8.5"D (320.0 x 180.0 x 215.0 mm) |
| Woofer Cabinet | ported, rear | ported, rear |
| Crossover Frequency | - | 3000Hz |
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The Two Speakers In Full
JBL Stage 2 250B: $349.95 Amazon
Pros: Consistent, EQ-able dips in the frequency response mean the tonal issues are at least correctable if you’re willing to use equalization. Horizontal dispersion is reasonably wide and controlled (~50-60 degrees). The tweeter itself holds up fine under compression testing - it’s the midwoofer that gives out first.
Cons: The reviewer was “even less enthusiastic” about this one than its disappointing floorstanding sibling. A confusing, hard-to-place tonal signature - a lower-midrange dip creates a recessed, lacking-attack character that’s then partly offset by a rebound around 2-4kHz, so it reads as recessed and forward at different times depending on the material. Treble falls off sharply above 6-7kHz, same issue as the larger 280F. Multitone distortion at 96dB is genuinely poor - well over 3%, reportedly around 10% at some frequencies. Limited bass extension (F3 64Hz, F10 50Hz) means a subwoofer is basically required if used as main speakers. Compression sets in early on the bass/midwoofer at higher output. The reviewer explicitly recommends the similarly-priced Polk Reserve R200/R100 instead for anyone who wants a more linear, EQ-free sound.
Full JBL Stage 2 250B review and specifications →
| Bass Extension (-10dB) | 50Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 64Hz (measured, Erin's Audio Corner) |
| Dimensions | 12.6"H x 7.9"W x 9.5"D (321.0 x 200.0 x 241.0 mm) |
| Drivers | 1" anodized aluminum dome tweeter with HDI waveguide, 5.25" polycellulose woofer |
| Impedance | 6 ohms nominal, 3.3 ohms minimum (measured, Erin's Audio Corner) |
| Output Power | 75W RMS |
| Sensitivity | 86dB (2.83V/1m, measured by Erin's Audio Corner) |
| Weight | 12.3 lbs / 5.6 kg (12.4 lb) per pair |
| Woofer Cabinet | ported, rear |
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- 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.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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