Short answer: the Wharfedale Diamond 220 for better sound quality, the Polk T15 for the lower price. The Wharfedale Diamond 220 ranks #28 of 87 bookshelf speakers at $350. The Polk T15 ranks #78 at $125, $225 cheaper.
What the Wharfedale Diamond 220 offers: Amir found the on-axis response smooth once the grille is removed, calling grille removal “a huge improvement” since the stock grille caused unusually strong comb filtering around 5kHz. Good horizontal dispersion from the waveguide-loaded tweeter and controlled distortion. After some EQ (a room mode filter and treble shelf), the reviewer called it “a truly hifi speaker” where “every audiophile track…sounded very good,” and said he was “happy to recommend” it for the budget class. Watch for: Response rolls off below 200Hz, so a subwoofer is recommended for full-range use. Some port rattling was noted at high volumes, traced to vibration rather than the woofer itself. Best performance requires removing the grille and applying the reviewer’s EQ filters.
What the Polk T15 offers: Extremely affordable 2-way design that actually measured better at +/-20 degrees vertical off-axis than directly on-axis. In near-field desktop use, the reviewer found the T15 “didn’t sound that horrible,” partly because nearby desk reflections mask the frequency response dip. Watch for: Spinorama analysis reveals what Amir called a “horrific drop in upper mids/lower treble region of 3 to 6 kHz,” likely from tweeter-woofer phase cancellation directly on-axis. Measured impedance ranges from 4-8 ohms, contradicting the specified 6-8 ohm range, and there’s a distortion peak around 400Hz. On- and off-axis response “vary a ton,” making listening position unusually important. The reviewer recommends saving up for the Pioneer SP-BS22-LR instead: “I can’t justify recommending the Polk T15 even though subjective performance was not horrible.”
Buy the Wharfedale Diamond 220 if sound quality matters more than the price. Buy the Polk T15 if the price matters more than sound quality.
If sound quality matters at all to you, skip the Polk T15. It ranks near the bottom of the 87 bookshelf speakers, so look higher up the list instead.
Specifications Side By Side
| Wharfedale Diamond 220 | Polk T15 | |
|---|---|---|
| Price | $350 | $125.00 |
| Ranked | #28 of 87 in Medium Size Bookshelf Speakers | #78 of 87 in Medium Size Bookshelf Speakers |
| Drivers | 5" (130mm) woven Kevlar woofer, 1" (25mm) tweeter | 0.75" tweeter, 5.25" woofer |
| Dimensions | 12.4"H x 6.9"W x 8.9"D (315 x 174 x 227 mm) | 10.63H x 6.5W x 7.25D in |
| Weight | 11.7 lbs / 5.3 kg each | 8.2 lbs / 3.74 kg each |
| Sensitivity | 86.9dB (2.83V/1m, measured, Audio Science Review; 86dB manufacturer specified) | - |
| Impedance | 8 ohms | 8 ohms nominal |
| Woofer Cabinet | ported, bottom-firing into secondary enclosure | - |
| Bass Extension (-3dB) | 117.2Hz (measured, Audio Science Review) | 88.6Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 58.0Hz (measured, Audio Science Review) | 58.1Hz (measured, Audio Science Review) |
| Frequency Response | - | 60Hz - 24kHz (Manufacturer specified) |
Related Speaker Comparisons
More useful head-to-heads from the same speaker class:
- JBL Stage A120 vs Polk Audio XT15
- Polk Audio XT15 vs Boston Acoustics A25
- Q Acoustics 3020i vs JBL Control 1 Pro
- KEF Q150 vs Polk T15
- JBL Stage 2 250B vs Polk T15
Prices on this page were last checked August 25, 2026 at 6:19 AM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
Wharfedale Diamond 220: $350 Amazon eBay
Pros: Amir found the on-axis response smooth once the grille is removed, calling grille removal “a huge improvement” since the stock grille caused unusually strong comb filtering around 5kHz. Good horizontal dispersion from the waveguide-loaded tweeter and controlled distortion. After some EQ (a room mode filter and treble shelf), the reviewer called it “a truly hifi speaker” where “every audiophile track…sounded very good,” and said he was “happy to recommend” it for the budget class.
Cons: Response rolls off below 200Hz, so a subwoofer is recommended for full-range use. Some port rattling was noted at high volumes, traced to vibration rather than the woofer itself. Best performance requires removing the grille and applying the reviewer’s EQ filters.
Full Wharfedale Diamond 220 review and specifications →
| Bass Extension (-10dB) | 58.0Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 117.2Hz (measured, Audio Science Review) |
| Dimensions | 12.4"H x 6.9"W x 8.9"D (315 x 174 x 227 mm) |
| Drivers | 5" (130mm) woven Kevlar woofer, 1" (25mm) tweeter |
| Impedance | 8 ohms |
| Sensitivity | 86.9dB (2.83V/1m, measured, Audio Science Review; 86dB manufacturer specified) |
| Weight | 11.7 lbs / 5.3 kg each |
| Woofer Cabinet | ported, bottom-firing into secondary enclosure |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Wharfedale Diamond 220 vs Polk Audio XT15
- Wharfedale Diamond 220 vs KEF Q150
- Wharfedale Diamond 220 vs Boston Acoustics A25
- Wharfedale Diamond 220 vs Wharfedale Diamond 12.1
- Wharfedale Diamond 220 vs Wharfedale Super Denton
- Wharfedale Diamond 220 vs Klipsch RP-500M II
- Wharfedale Diamond 220 vs Monitor Audio Silver 50 7G
- Wharfedale Diamond 220 vs JBL Studio 530
- See all 32 comparisons
Polk T15: $125.00 Amazon eBay
Pros: Extremely affordable 2-way design that actually measured better at +/-20 degrees vertical off-axis than directly on-axis. In near-field desktop use, the reviewer found the T15 “didn’t sound that horrible,” partly because nearby desk reflections mask the frequency response dip.
Cons: Spinorama analysis reveals what Amir called a “horrific drop in upper mids/lower treble region of 3 to 6 kHz,” likely from tweeter-woofer phase cancellation directly on-axis. Measured impedance ranges from 4-8 ohms, contradicting the specified 6-8 ohm range, and there’s a distortion peak around 400Hz. On- and off-axis response “vary a ton,” making listening position unusually important. The reviewer recommends saving up for the Pioneer SP-BS22-LR instead: “I can’t justify recommending the Polk T15 even though subjective performance was not horrible.”
Full Polk T15 review and specifications →
| Bass Extension (-10dB) | 58.1Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 88.6Hz (measured, Audio Science Review) |
| Dimensions | 10.63H x 6.5W x 7.25D in |
| Drivers | 0.75" tweeter, 5.25" woofer |
| Frequency Response | 60Hz - 24kHz (Manufacturer specified) |
| Impedance | 8 ohms nominal |
| Weight | 8.2 lbs / 3.74 kg each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons