Short answer: the Wharfedale Super Denton for better sound quality, the Pioneer SP-BS22-LR (Philharmonic AAM Mod) for the lower price. The Wharfedale Super Denton ranks #18 of 74 bookshelf speakers at $1499. The Pioneer SP-BS22-LR (Philharmonic AAM Mod) ranks #51 at $168, $1331 cheaper.
What the Pioneer SP-BS22-LR (Philharmonic AAM Mod) offers: 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. Watch for: 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.
What the Wharfedale Super Denton offers: A 3-way design with a 1” soft dome tweeter, a 2” soft dome midrange offset to the side of a centered 6.5” woven Kevlar woofer - a more compact alternative to Wharfedale’s own Linton 85 with a similar overall character. Measured sensitivity around 86.6-87dB with on-axis linearity within about ±3dB. No cabinet or box resonances turned up in impedance testing, and there are no spike feet to install. Harmonic distortion looks good at both 86dB and 96dB, with about 20dB of usable dynamic range up to 96dB before compression starts to affect the midrange more noticeably near 102dB. Because bass rolls off starting around 60Hz, placing it closer to a wall (about 1-2 feet) than usual boosts low-end punch without the midbass bloat a deeper-extending speaker would get from the same placement. In the reviewer’s own comparison, its estimated in-room response actually measured more linear than the pricier Linton 85’s, despite being a bit less linear on-axis. Watch for: A mid-range scoop from about 200-800Hz and a separate upper-midrange scoop were both audible in direct ABX comparison against a reference-neutral speaker, giving aggressive-sounding material a more subdued character. A resonance around 660-700Hz shows up in measurement, though the reviewer couldn’t reliably hear it with real music in his own blind-ish A/B testing. The offset tweeter-and-midrange layout makes horizontal off-axis response noticeably asymmetric - response drops as much as 8dB more to one side than the other at wider angles - so the reviewer recommends aiming the speakers directly at the listener (not toed out, which loses upper treble) and suggests sidewall absorption to control uneven reflections. Must be listened to with the grille on - measurements are noticeably worse with it off (wider 2-4kHz dip, extra treble bump). Horizontal soundstage width felt a bit narrower than the reviewer personally prefers, likely related to the same offset driver layout. Multitone distortion gets high in the midrange at 96dB/1m, a concern mainly in larger rooms where you’d need to play louder.
Buy the Pioneer SP-BS22-LR (Philharmonic AAM Mod) if the price matters more than sound quality. Buy the Wharfedale Super Denton if sound quality matters more than the price.
Specifications Side By Side
| Pioneer SP-BS22-LR (Philharmonic AAM Mod) | Wharfedale Super Denton | |
|---|---|---|
| Price | $168 | $1499 |
| Ranked | #51 of 74 in Medium Size Bookshelf Speakers | #18 of 74 in Medium Size Bookshelf Speakers |
| Bass Extension (-3dB) | 78Hz (measured, Audio Science Review) | 61Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 60Hz (measured, Audio Science Review) | 41Hz (measured, Erin’s Audio Corner) |
| Drivers | 1x 4" curvilinear-cone woofer (stock Pioneer), 1x Peerless BC25TG15 1" silk dome tweeter (replacement) | 1" soft dome tweeter, 2" soft dome midrange, 6.5" woven Kevlar woofer |
| Weight | 9 lbs / 4.1 kg | 20.3 lbs / 9.2 kg (20.2 lbs) each |
| Sensitivity | 83dB (2.83V/1m, measured by Audio Science Review) | 86.6dB (measured by Erin’s Audio Corner) |
| Impedance | 8 ohms nominal (approx. 5 ohms minimum, measured by Audio Science Review) | 6 ohms nominal, 3 ohms minimum (measured, Erin’s Audio Corner) |
| Crossover Frequency | 3000Hz | 940Hz, 4.6kHz |
| Dimensions | 12.6"H x 7.1"W x 8.5"D (320.0 x 180.0 x 215.0 mm) | 14.2"H x 9.7"W x 10.8"D (360 x 246 x 275 mm) |
| Woofer Cabinet | ported, rear | ported |
| Frequency Response | - | 52Hz - 20kHz (±3dB, manufacturer specified); -6dB to 40Hz |
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The Two Speakers In Full
Pioneer SP-BS22-LR (Philharmonic AAM Mod): $168 eBay
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 |
- Links
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Wharfedale Super Denton: $1499 Crutchfield eBay
Pros: A 3-way design with a 1” soft dome tweeter, a 2” soft dome midrange offset to the side of a centered 6.5” woven Kevlar woofer - a more compact alternative to Wharfedale’s own Linton 85 with a similar overall character. Measured sensitivity around 86.6-87dB with on-axis linearity within about ±3dB. No cabinet or box resonances turned up in impedance testing, and there are no spike feet to install. Harmonic distortion looks good at both 86dB and 96dB, with about 20dB of usable dynamic range up to 96dB before compression starts to affect the midrange more noticeably near 102dB. Because bass rolls off starting around 60Hz, placing it closer to a wall (about 1-2 feet) than usual boosts low-end punch without the midbass bloat a deeper-extending speaker would get from the same placement. In the reviewer’s own comparison, its estimated in-room response actually measured more linear than the pricier Linton 85’s, despite being a bit less linear on-axis.
Cons: A mid-range scoop from about 200-800Hz and a separate upper-midrange scoop were both audible in direct ABX comparison against a reference-neutral speaker, giving aggressive-sounding material a more subdued character. A resonance around 660-700Hz shows up in measurement, though the reviewer couldn’t reliably hear it with real music in his own blind-ish A/B testing. The offset tweeter-and-midrange layout makes horizontal off-axis response noticeably asymmetric - response drops as much as 8dB more to one side than the other at wider angles - so the reviewer recommends aiming the speakers directly at the listener (not toed out, which loses upper treble) and suggests sidewall absorption to control uneven reflections. Must be listened to with the grille on - measurements are noticeably worse with it off (wider 2-4kHz dip, extra treble bump). Horizontal soundstage width felt a bit narrower than the reviewer personally prefers, likely related to the same offset driver layout. Multitone distortion gets high in the midrange at 96dB/1m, a concern mainly in larger rooms where you’d need to play louder.
Full Wharfedale Super Denton review and specifications →
| Bass Extension (-10dB) | 41Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 61Hz (measured, Erin's Audio Corner) |
| Crossover Frequency | 940Hz, 4.6kHz |
| Dimensions | 14.2"H x 9.7"W x 10.8"D (360 x 246 x 275 mm) |
| Drivers | 1" soft dome tweeter, 2" soft dome midrange, 6.5" woven Kevlar woofer |
| Frequency Response | 52Hz - 20kHz (±3dB, manufacturer specified); -6dB to 40Hz |
| Impedance | 6 ohms nominal, 3 ohms minimum (measured, Erin's Audio Corner) |
| Sensitivity | 86.6dB (measured by Erin's Audio Corner) |
| Weight | 20.3 lbs / 9.2 kg (20.2 lbs) each |
| Woofer Cabinet | ported |
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- Reviews, Comparisons and Sound Samples
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