Short answer: the Klipsch Heresy IV for better sound quality, the Rockville RockTower 68B for the lower price, though neither ranks well in its class. The Klipsch Heresy IV ranks #71 of 73 floorstanding speakers, rated 2.3/5, at $3,198. The Rockville RockTower 68B ranks #72, rated 2.2/5, at $234.90, $2,963.10 cheaper. Both are rated below 3.0/5 among the 73 floorstanding speakers, so if sound quality matters, consider the Revel Concerta2 F35 instead, ranked #19 at $900.
Why pick the Klipsch Heresy IV: Very high 94.5dB/2.83V/1m sensitivity in Erin’s anechoic measurement (well below Klipsch’s 99dB in-room claim, but still excellent) and strong short-term output from a 12-inch woofer plus horn-loaded midrange and tweeter. The catch: Erin measured a 77Hz F3 and response rolling away near 100Hz in-room, so a subwoofer is required for modern full-range reproduction.
The case for the Rockville RockTower 68B: An unusually inexpensive current 3-way tower with dual 6.5-inch woofers, a dedicated 6.5-inch midrange and silk-dome tweeter. The tradeoff: Objective performance is weak: its preference score is only 0.96 without a subwoofer and 3.42 with one, placing it near the bottom of the measured floorstanders.
Buy the Klipsch Heresy IV if sound quality matters more than the price. Buy the Rockville RockTower 68B if the price matters more than sound quality.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Klipsch Heresy IV | Rockville RockTower 68B | |
|---|---|---|
| Price | $3,198 per pair | $234.90 per pair |
| Ranked | #71 of 73 in Large Size Floorstanding Speakers | #72 of 73 in Large Size Floorstanding Speakers |
| Bass Extension (-3dB) | 77Hz (measured, Erin’s Audio Corner) | 60.1Hz (measured, Erin’s Audio Corner via spinorama.org) |
| Bass Extension (-10dB) | 50.0Hz (measured, Erin’s Audio Corner) | 43.1Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| Sensitivity | 94.5dB/2.83V/1m (measured, Erin’s Audio Corner) | 87dB |
| Impedance | Approximately 4 ohms minimum (measured, Erin’s Audio Corner) | 8 ohms |
| Drivers | 1” horn-loaded tweeter; 1.75” horn-loaded midrange; 12” woofer | 1-inch silk-dome tweeter, 6.5-inch midrange, dual 6.5-inch woofers |
| Dimensions | 24.8”H x 15.6”W x 13.3”D | 41.7”H x 7.9”W x 10.4”D (1060 x 200 x 265 mm) |
| Weight | 45 lbs (20.4 kg) each | 55.1 lbs (25.0 kg) each |
| Woofer Cabinet | ported, rear | - |
| Spinorama Preference Score | 2.27 | 0.96 |
| Spinorama Preference Score with Perfect Sub | 5.02 | 3.42 |
| DIY Kit | No | No |
| Enclosure | - | Passive 3-way vented floorstander |
| Frequency Response | - | 30Hz-20kHz (manufacturer specified) |
| Bass Extension (-6dB) | - | 54Hz (measured, Spinorama) |
| Power Handling | - | 125W RMS / 500W peak |
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Prices on this page were last checked September 29, 2026 at 3:43 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 Heresy IV: $3,198 per pair Amazon Crutchfield eBay
Pros: Very high 94.5dB/2.83V/1m sensitivity in Erin’s anechoic measurement (well below Klipsch’s 99dB in-room claim, but still excellent) and strong short-term output from a 12-inch woofer plus horn-loaded midrange and tweeter. The compact, furniture-grade Heritage cabinet is easier to place than most high-efficiency designs, and dynamics at moderate levels can sound lively. A stable four-ohm-capable amplifier can produce substantial SPL with relatively little voltage. Measured bass extension of 77Hz (-3dB), with a measured sensitivity of 94.5dB.
Cons: Erin measured a 77Hz F3 and response rolling away near 100Hz in-room, so a subwoofer is required for modern full-range reproduction. The impedance dips to about 4 ohms, reducing the practical amplifier advantage implied by its sensitivity. Pronounced directivity mismatch at the driver transitions, impedance/response resonances and elevated distortion spikes around the crossover remain audible concerns that EQ cannot fully solve. At 102dB Erin measured roughly 1.5dB midband compression; at 96dB distortion rises around crossover. Performance is difficult to justify at the price, and Erin explicitly did not recommend it.
Full Klipsch Heresy IV review and specifications →
| Bass Extension (-10dB) | 50.0Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 77Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 24.8”H x 15.6”W x 13.3”D |
| Drivers | 1” horn-loaded tweeter; 1.75” horn-loaded midrange; 12” woofer |
| Impedance | Approximately 4 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 94.5dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 2.27 |
| Spinorama Preference Score with Perfect Sub | 5.02 |
| Weight | 45 lbs (20.4 kg) each |
| Woofer Cabinet | ported, rear |
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Rockville RockTower 68B: $234.90 per pair Amazon Rockville eBay
Pros: An unusually inexpensive current 3-way tower with dual 6.5-inch woofers, a dedicated 6.5-inch midrange and silk-dome tweeter. Erin’s high-quality Spinorama data measures useful 54Hz extension, and the manufacturer sells each tower directly with free shipping. Measured bass extension of 60.1Hz (-3dB).
Cons: Objective performance is weak: its preference score is only 0.96 without a subwoofer and 3.42 with one, placing it near the bottom of the measured floorstanders. The large cabinet is lightly priced and specified sensitivity is only 87dB despite the multi-driver layout.
Full Rockville RockTower 68B review and specifications →
| Bass Extension (-10dB) | 43.1Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
|---|---|
| Bass Extension (-3dB) | 60.1Hz (measured, Erin’s Audio Corner via spinorama.org) |
| Bass Extension (-6dB) | 54Hz (measured, Spinorama) |
| DIY Kit | No |
| Dimensions | 41.7”H x 7.9”W x 10.4”D (1060 x 200 x 265 mm) |
| Drivers | 1-inch silk-dome tweeter, 6.5-inch midrange, dual 6.5-inch woofers |
| Enclosure | Passive 3-way vented floorstander |
| Frequency Response | 30Hz-20kHz (manufacturer specified) |
| Impedance | 8 ohms |
| Power Handling | 125W RMS / 500W peak |
| Sensitivity | 87dB |
| Spinorama Preference Score | 0.96 |
| Spinorama Preference Score with Perfect Sub | 3.42 |
| Weight | 55.1 lbs (25.0 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons