Short answer: the Klipsch RP-500M II, which ranks higher and is the more complete speaker. It ranks #18 of 90 bookshelf speakers at $389.99 with about a 5dB midrange fill-in over the original RP-500M, though its 92-93dB sensitivity is an in-room rating. The Diamond 220 costs $299 and is smooth on-axis only with the grille removed, since the stock grille causes strong comb filtering around 5kHz, and it rolls off below 200Hz.
Buy the Klipsch RP-500M II. It is rated higher for sound quality, and the Wharfedale Diamond 220 is discontinued, so it is only available used.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| Klipsch RP-500M II | Wharfedale Diamond 220 | |
|---|---|---|
| Price | $389.99 per pair | $299 per pair Discontinued |
| Ranked | #18 of 90 in Medium Size Bookshelf Speakers | #28 of 90 in Medium Size Bookshelf Speakers |
| Bass Extension (-10dB) | 53Hz (measured, Erin’s Audio Corner) | 58.0Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 67Hz (measured, Erin’s Audio Corner) | 117.2Hz (measured, Audio Science Review) |
| Crossover Frequency | 1530Hz | - |
| Dimensions | 13.6”H x 6.8”W x 10.6”D (344.4 x 173 x 270.5 mm) | 12.4”H x 6.9”W x 8.9”D (315 x 174 x 227 mm) |
| Impedance | 8 ohms nominal, 3.3 ohms minimum (measured, Erin’s Audio Corner) | 8 ohms |
| Sensitivity | 85dB (measured, Erin’s Audio Corner) | 86.9dB (2.83V/1m, measured, Audio Science Review; 86dB manufacturer specified) |
| Drivers | 5.25” Cerametallic™ cone woofer with Faraday rings, 1” LTS Titanium diaphragm tweeter with Hybrid Cross-Section Expanded Tractrix® horn | 5” (130mm) woven Kevlar woofer, 1” (25mm) tweeter |
| Weight | 13 lbs (5.9 kg) each | 11.7 lbs (5.3 kg) each |
| Woofer Cabinet | ported, rear | ported, bottom-firing into secondary enclosure |
| Spinorama Preference Score | 5.22 | 3.40 |
| Spinorama Preference Score with Perfect Sub | 7.84 | 6.64 |
| DIY Kit | No | No |
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Prices on this page were last checked October 2, 2026 at 10:18 PM 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
Klipsch RP-500M II: $389.99 per pair Amazon eBay
Older model: the Klipsch RP-500M (ranked lower, rated 3.4/5).
Pros: Major mid-range clarity improvement over the original RP-500M: about a 5dB fill-in between 1-3kHz in the estimated in-room response, giving a noticeably more resolved, detailed midrange. More neutral and linear overall than its sibling RP-600M II, which carries about 2-3dB more high-frequency energy and a touch more bass but less overall balance. Very precise soundstage imaging and instrument placement. Distortion through the midrange is cleaner than the previous generation. Measured bass extension of 67Hz (-3dB), with a measured sensitivity of 85dB.
Cons: Klipsch’s quoted sensitivity (around 92-93dB) uses an unconventional in-room-based rating rather than the standard anechoic measurement; on an anechoic basis it measures closer to about 85dB, in line with typical bookshelf speakers this size, so it isn’t the outlier in efficiency the spec sheet implies. Horizontal dispersion of about ±40-50° is narrower and more directive than the reviewer’s preference for a wider, more enveloping soundstage. Toeing the speaker out to widen the soundstage or soften on-axis brightness comes at some cost to imaging precision. Slightly less clean in the tweeter region than the midrange, likely tied to crossover placement, though not considered a dealbreaker. Low-frequency output is limited: measured around 95dB at 4 meters for the pair before the woofers started to unload, so a subwoofer is recommended for anyone wanting real bass rather than stepping up to a larger model.
Full Klipsch RP-500M II review and specifications →
| Bass Extension (-10dB) | 53Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 67Hz (measured, Erin’s Audio Corner) |
| Crossover Frequency | 1530Hz |
| DIY Kit | No |
| Dimensions | 13.6”H x 6.8”W x 10.6”D (344.4 x 173 x 270.5 mm) |
| Drivers | 5.25” Cerametallic™ cone woofer with Faraday rings, 1” LTS Titanium diaphragm tweeter with Hybrid Cross-Section Expanded Tractrix® horn |
| Impedance | 8 ohms nominal, 3.3 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 85dB (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.22 |
| Spinorama Preference Score with Perfect Sub | 7.84 |
| Weight | 13 lbs (5.9 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Klipsch RP-500M II vs Wharfedale Super Denton
- Klipsch RP-500M II vs Wharfedale Diamond 12.1
- Klipsch RP-500M II vs Monitor Audio Silver 50 7G
- Klipsch RP-500M II vs Radiant Acoustics Clarity 4.2
- Klipsch RP-500M II vs Revel M105
- Klipsch RP-500M II vs Moondrop M4P MTM
- Klipsch RP-500M II vs KEF Q150
- Klipsch RP-500M II vs Arendal 1961 Monitor
- See all 39 comparisons
Wharfedale Diamond 220: $299 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: 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. Measured bass extension of 117.2Hz (-3dB), with a measured sensitivity of 86.9dB.
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. Discontinued, with only limited remaining stock available direct from Wharfedale.
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) |
| DIY Kit | No |
| 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) |
| Spinorama Preference Score | 3.40 |
| Spinorama Preference Score with Perfect Sub | 6.64 |
| 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 Monitor Audio Silver 50 7G
- Wharfedale Diamond 220 vs Revel M105
- Wharfedale Diamond 220 vs JBL Studio 530
- See all 33 comparisons