Short answer: the Wharfedale Diamond 12.1 for better sound quality, the JBL Control 1 Pro for the lower price. The Wharfedale Diamond 12.1 ranks #20 of 74 bookshelf speakers at $599. The JBL Control 1 Pro ranks #64 at $164, $435 cheaper.
What the Wharfedale Diamond 12.1 offers: 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. 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. 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.
What the JBL Control 1 Pro offers: Magnetically shielded transducers and a rugged molded enclosure make it a durable choice for wall-mount or install use, with SonicGuard overload protection built into the crossover. Feels solidly built despite the low price, and the professional crossover network uses steep slopes. Watch for: Sound power and predicted in-room response measurements are badly uneven compared to the JBL 305P Mark II tested alongside it, with no waveguide to control directivity as the woofer beams before handing off to the tweeter. The reviewer performed no distortion or dedicated listening test on this unit and concluded he didn’t “think there is a reason to purchase it” over a proper studio monitor at a similar price.
Buy the Wharfedale Diamond 12.1 if sound quality matters more than the price. Buy the JBL Control 1 Pro if the price matters more than sound quality.
If sound quality matters at all to you, skip the JBL Control 1 Pro. It ranks near the bottom of the 74 bookshelf speakers, so look higher up the list instead.
Specifications Side By Side
| Wharfedale Diamond 12.1 | JBL Control 1 Pro | |
|---|---|---|
| Price | $599 Discontinued | $164 |
| Ranked | #20 of 74 in Medium Size Bookshelf Speakers | #64 of 74 in Medium Size Bookshelf Speakers |
| Bass Extension (-10dB) | 46Hz (measured, Erin’s Audio Corner) | 55Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 61Hz (measured, Erin’s Audio Corner) | 78Hz (measured, Audio Science Review) |
| Crossover Frequency | 2.6kHz | - |
| Dimensions | 12.2"H x 7"W x 10.9"D (310 x 178 x 277 mm) | 9.3H x 6.3W x 5.6D in |
| Impedance | 8 ohms nominal (3.9 ohms minimum above 80Hz, measured, Erin’s Audio Corner) | 4 ohms |
| Sensitivity | 84dB (measured by Erin’s Audio Corner; 87dB manufacturer specified) | 87dB (2.83V/1m, measured, Audio Science Review) |
| Drivers | 5" advanced polypropylene cone woofer, 1" textile dome tweeter | 5.25" low frequency driver, 0.75" polycarbonate dome tweeter |
| Discontinued | Yes | - |
| Weight | 15 lbs / 6.8 kg each | 4 lbs / 1.8 kg each |
| Woofer Cabinet | ported | sealed |
| Frequency Response | - | 80Hz - 20kHz -10dB (Manufacturer specified) |
| Power Handling | - | 150W |
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The Two Speakers In Full
Wharfedale Diamond 12.1: $599 Discontinued eBay
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.
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 |
| Dimensions | 12.2"H x 7"W x 10.9"D (310 x 178 x 277 mm) |
| Discontinued | Yes |
| 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) |
| 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)
- Reddit Search for Wharfedale Diamond 12.1 Review
- Head-to-Head Comparisons
- Wharfedale Diamond 12.1 vs Carmody S2000
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- Wharfedale Diamond 12.1 vs Wharfedale Super Denton
- Wharfedale Diamond 12.1 vs Klipsch RP-500M II
- Wharfedale Diamond 12.1 vs KEF Q150
- Wharfedale Diamond 12.1 vs Wharfedale Diamond 220
- Wharfedale Diamond 12.1 vs Monitor Audio Silver 50 7G
- Wharfedale Diamond 12.1 vs Revel M105
- See all 34 comparisons
JBL Control 1 Pro: $164 Parts Express eBay
Pros: Magnetically shielded transducers and a rugged molded enclosure make it a durable choice for wall-mount or install use, with SonicGuard overload protection built into the crossover. Feels solidly built despite the low price, and the professional crossover network uses steep slopes.
Cons: Sound power and predicted in-room response measurements are badly uneven compared to the JBL 305P Mark II tested alongside it, with no waveguide to control directivity as the woofer beams before handing off to the tweeter. The reviewer performed no distortion or dedicated listening test on this unit and concluded he didn’t “think there is a reason to purchase it” over a proper studio monitor at a similar price.
Full JBL Control 1 Pro review and specifications →
| Bass Extension (-10dB) | 55Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 78Hz (measured, Audio Science Review) |
| Dimensions | 9.3H x 6.3W x 5.6D in |
| Drivers | 5.25" low frequency driver, 0.75" polycarbonate dome tweeter |
| Frequency Response | 80Hz - 20kHz -10dB (Manufacturer specified) |
| Impedance | 4 ohms |
| Power Handling | 150W |
| Sensitivity | 87dB (2.83V/1m, measured, Audio Science Review) |
| Weight | 4 lbs / 1.8 kg each |
| Woofer Cabinet | sealed |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- JBL Control 1 Pro vs Polk T15
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