Short answer: the JBL Stage 250B, if you are buying new. The Wharfedale Diamond 12.1 ranks higher than it (#21 vs #52 of 88 bookshelf speakers, 3.9/5 vs 3.2/5) but is discontinued, so only consider it used; the JBL Stage 250B is still sold new at $439.95.
What the Wharfedale Diamond 12.1 does well: A budget two-way bookshelf speaker (5” polypropylene woofer, 1” textile dome tweeter) that measures well for its price: harmonic distortion at 86dB stays under 1% THD down to about 60Hz, genuinely good for a 5” mid-woofer. Watch for: A dip of about 3dB in the 1-3kHz crossover region (on-axis, in the predicted in-room response, and even off-axis) gives the speaker a soft, “laid-back” character that noticeably saps attack and transient bite from drums, guitar and other percussive material - possibly an intentional BBC-style dip, but one the reviewer would still prefer tuned flat.
Why pick the JBL Stage 250B: Good local Spinorama scores of 4.06 raw and 6.60 with a subwoofer, with smooth horizontal directivity from JBL’s next-generation HDI waveguide. Watch for: Its objective score is good rather than class-leading, and the rear port needs some wall clearance.
Buy the JBL Stage 250B new; the Wharfedale Diamond 12.1 is no longer sold new, so it only makes sense as a used find.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Wharfedale Diamond 12.1 | JBL Stage 250B | |
|---|---|---|
| Price | $599 per pair Discontinued | $439.95 per pair |
| Ranked | #21 of 88 in Medium Size Bookshelf Speakers | #52 of 88 in Medium Size Bookshelf Speakers |
| Bass Extension (-10dB) | 46Hz (measured, Erin’s Audio Corner) | 50Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 61Hz (measured, Erin’s Audio Corner) | 64.5Hz (measured, Erin’s Audio Corner via spinorama.org) |
| Crossover Frequency | 2.6kHz | - |
| Dimensions | 12.2”H x 7”W x 10.9”D (310 x 178 x 277 mm) | 12.6H x 7.9W x 9.5D in |
| Impedance | 8 ohms nominal (3.9 ohms minimum above 80Hz, measured, Erin’s Audio Corner) | 6 ohms |
| Sensitivity | 84dB (measured by Erin’s Audio Corner; 87dB manufacturer specified) | 86dB/2.83V/1m |
| Drivers | 5” advanced polypropylene cone woofer, 1” textile dome tweeter | 1-inch aluminum tweeter, 5.25-inch polycellulose woofer |
| Weight | 15 lbs (6.8 kg) each | 12.3 lbs (5.6 kg) each |
| Woofer Cabinet | ported | ported, rear |
| Spinorama Preference Score | 5.01 | 4.06 |
| Spinorama Preference Score with Perfect Sub | 7.42 | 6.60 |
| DIY Kit | No | No |
| Enclosure | - | Passive 2-way rear-ported |
| Frequency Response | - | 50Hz-25kHz (-6dB) |
| Recommended Power | - | 20-150W |
| Power Handling | - | 75W RMS |
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The Two Speakers In Full
Wharfedale Diamond 12.1: $599 per pair Discontinued eBay
Newer model: the Wharfedale Diamond 12.1i. It’s likely to perform similarly, though we don’t have measurements to confirm that yet.
Pros: A budget two-way bookshelf speaker (5” polypropylene woofer, 1” textile dome tweeter) that measures well for its price: harmonic distortion at 86dB stays under 1% THD down to about 60Hz, genuinely good for a 5” mid-woofer. Wide horizontal radiation of about ±60° up to roughly 5kHz before the tweeter starts to beam. Tonally smooth and easy to listen to at moderate volumes, with a pleasant, non-fatiguing character the reviewer said he’d happily recommend to someone who wants noticeably better fit, finish and looks than typical speakers in the $300-400 range. A high-pass crossover around 80Hz meaningfully cleans up midrange multitone distortion, so pairing it with a subwoofer helps more than usual for a speaker this size. Measured bass extension of 61Hz (-3dB), with a measured sensitivity of 84dB.
Cons: A dip of about 3dB in the 1-3kHz crossover region (on-axis, in the predicted in-room response, and even off-axis) gives the speaker a soft, “laid-back” character that noticeably saps attack and transient bite from drums, guitar and other percussive material - possibly an intentional BBC-style dip, but one the reviewer would still prefer tuned flat. Vertical directivity is unusually tight for this class of speaker, holding together only within about ±5° of the tweeter axis before a real hole opens up in the response, so seating height matters a lot more than on most bookshelf designs. Diffraction artifacts around 3kHz and 5kHz show up as differences between the listening-window and on-axis curves. Distortion climbs well past acceptable levels at higher output - harmonic distortion exceeds 3% around 150Hz at 96dB (versus under 1% at 86dB), multitone distortion tops 10% at 96dB/1m, and real compression sets in between 96-102dB (about 1.5dB of lost dynamic range around 300Hz at 102dB/1m, roughly equivalent to 92dB for a pair at 4m in a room) - a genuine limitation on how loud or how far away this speaker can be pushed. Measured average sensitivity (84dB) runs a few dB below the 87dB spec. Only a 5” woofer, so a subwoofer is required for real bass. Discontinued.
Full Wharfedale Diamond 12.1 review and specifications →
| Bass Extension (-10dB) | 46Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 61Hz (measured, Erin’s Audio Corner) |
| Crossover Frequency | 2.6kHz |
| DIY Kit | No |
| Dimensions | 12.2”H x 7”W x 10.9”D (310 x 178 x 277 mm) |
| Drivers | 5” advanced polypropylene cone woofer, 1” textile dome tweeter |
| Impedance | 8 ohms nominal (3.9 ohms minimum above 80Hz, measured, Erin’s Audio Corner) |
| Sensitivity | 84dB (measured by Erin’s Audio Corner; 87dB manufacturer specified) |
| Spinorama Preference Score | 5.01 |
| Spinorama Preference Score with Perfect Sub | 7.42 |
| Weight | 15 lbs (6.8 kg) each |
| Woofer Cabinet | ported |
- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: Wharfedale 12.1 Budget Bookshelf Speaker with “Laid Back” sound but output limited. More from Erin’s Audio Corner →
- Audio Science Review Wharfedale Diamond 12.1 More from Audio Science Review →
- Erin’s Audio Corner Website: Wharfedale Diamond 12.1
- Audio Science Review Measurements (spinorama.org)
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JBL Stage 250B: $439.95 per pair Amazon JBL eBay
Older model: the JBL Stage A130 (ranked lower, rated 2.1/5).
Pros: Good local Spinorama scores of 4.06 raw and 6.60 with a subwoofer, with smooth horizontal directivity from JBL’s next-generation HDI waveguide. The current Stage 2 model offers solid build details, magnetic grilles and useful 56Hz measured extension at an accessible price. Measured bass extension of 64.5Hz (-3dB).
Cons: Its objective score is good rather than class-leading, and the rear port needs some wall clearance. At 86dB sensitivity and six-ohm nominal impedance it is not especially easy to drive, while the compact woofer limits deep-bass output.
Full JBL Stage 250B review and specifications →
| Bass Extension (-10dB) | 50Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 64.5Hz (measured, Erin’s Audio Corner via spinorama.org) |
| DIY Kit | No |
| Dimensions | 12.6H x 7.9W x 9.5D in |
| Drivers | 1-inch aluminum tweeter, 5.25-inch polycellulose woofer |
| Enclosure | Passive 2-way rear-ported |
| Frequency Response | 50Hz-25kHz (-6dB) |
| Impedance | 6 ohms |
| Power Handling | 75W RMS |
| Recommended Power | 20-150W |
| Sensitivity | 86dB/2.83V/1m |
| Spinorama Preference Score | 4.06 |
| Spinorama Preference Score with Perfect Sub | 6.60 |
| Weight | 12.3 lbs (5.6 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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