Short answer: the Polk Audio Reserve R700. It ranks #24 of 56 floorstanding speakers by sound quality at $1199; the Klipsch Heresy IV ranks #34 and costs $3198, so there is not much of a tradeoff to weigh.
The case for the Polk Audio Reserve R700: Three-way design with a 1” ring radiator tweeter, 6.5” mid-range, and dual 8” mid-bass drivers in a ported, down-firing cabinet. The tradeoff: Compression in the high frequencies rises sharply between 96dB and 102dB output - a real limitation only at very high volumes (around 100dB at 3 meters), but a clear step down from pricier ($5,000+) towers.
On the Klipsch Heresy IV side: 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. Set against that: Erin measured a 77Hz F3 and response rolling away near 100Hz in-room, so a subwoofer is required for modern full-range reproduction.
Buy the Polk Audio Reserve R700. It ranks higher for sound quality than the Klipsch Heresy IV and costs less, so there is no real case for the other one.
Specifications Side By Side
| Polk Audio Reserve R700 | Klipsch Heresy IV | |
|---|---|---|
| Price | $1,199.00 | $3,198/pair |
| Ranked | #24 of 56 in Large Size Floorstanding Speakers | #34 of 56 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 31Hz (measured, Erin’s Audio Corner) | - |
| Bass Extension (-3dB) | 40Hz (measured, Erin’s Audio Corner) | 77Hz (measured, Erin’s Audio Corner) |
| Impedance | 4 ohms nominal, 3.5 ohms minimum (measured above 80Hz, Erin’s Audio Corner) | Approximately 4 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 87.5dB (measured average 300Hz-3kHz @ 2.83V/1m, Erin’s Audio Corner) | 94.5dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Drivers | 2x 8" polypropylene cone woofers, 1x 6.5" turbine cone midrange, 1x 1" Pinnacle ring radiator tweeter | 1" horn-loaded tweeter; 1.75" horn-loaded midrange; 12" woofer |
| Weight | 102.1 lbs / 46.3 kg | 45 lb each |
| Woofer Cabinet | ported, down-firing | ported, rear |
| Dimensions | 45"H x 12.6"W x 16.9"D (1143.8 x 320.7 x 428.3 mm) | 24.8"H x 15.6"W x 13.3"D |
Related Speaker Comparisons
More useful head-to-heads from the same speaker class:
- KEF R11 Meta vs Q Acoustics 5040
- Morel Avyra 633 vs KLH Model Five
- Q Acoustics 5040 vs PSB Imagine T65
- Klipsch Heresy IV vs Klipsch RP-5000F II
- Q Acoustics 5040 vs Klipsch Heresy IV
The Two Speakers In Full
Polk Audio Reserve R700: $1,199.00 Amazon
Pros: Three-way design with a 1” ring radiator tweeter, 6.5” mid-range, and dual 8” mid-bass drivers in a ported, down-firing cabinet. On-axis frequency response holds within about ±2dB across most of its range, with genuinely deep bass extension (F3 40Hz) reaching into the mid-30s Hz in-room. Wide horizontal radiation of about ±70°, giving a strong, enveloping stereo width and stage-extension effect on well-recorded tracks. Good low-level dynamics - solid bass thump at quiet listening volumes without over-accentuation. Strong distortion and compression control through the bass and midrange. Real nominal impedance closer to 4 ohms than the marketed 8 ohms, so with the right amplifier it can be driven hard - a $3,000 two-channel integrated brought out significantly more life than a budget $300 unit could. Excellent value at its roughly $2,200/pair MSRP, ranking among the reviewer’s top picks under $2,500; outperforms the similarly-priced Klipsch RP-8000F II in bass extension and overall smoothness.
Cons: Compression in the high frequencies rises sharply between 96dB and 102dB output - a real limitation only at very high volumes (around 100dB at 3 meters), but a clear step down from pricier ($5,000+) towers. Horizontal directivity mismatch around 4-5kHz, where the tweeter flares wider than the midrange, can sound a bit forward - especially noticeable when toed out further into the room; sidewall absorption or curtains help tame it. Harmonic distortion crosses the reviewer’s 3% threshold around 7kHz at 96dB output, possibly contributing to that same forward quality at high volume. Narrow vertical sweet spot (about ±15° from the tweeter axis), typical of non-coaxial tower designs - more of a consideration for multi-row home theater seating than single-row listening. The ring-radiator tweeter narrows noticeably above about 7-8kHz, and toeing the speaker out more than about 20° causes the top end to fall off quickly. Needs at least 2 feet of clearance from the rear wall to avoid boomy, exaggerated bass, since it lacks the bass-shelf tuning some rivals use to allow closer wall placement. Compared to the pricier KEF R5 Meta, has narrower horizontal (and much narrower vertical) directivity, so seating flexibility is more limited.
Full Polk Audio Reserve R700 review and specifications →
| Bass Extension (-10dB) | 31Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 40Hz (measured, Erin's Audio Corner) |
| Dimensions | 45"H x 12.6"W x 16.9"D (1143.8 x 320.7 x 428.3 mm) |
| Drivers | 2x 8" polypropylene cone woofers, 1x 6.5" turbine cone midrange, 1x 1" Pinnacle ring radiator tweeter |
| Impedance | 4 ohms nominal, 3.5 ohms minimum (measured above 80Hz, Erin's Audio Corner) |
| Sensitivity | 87.5dB (measured average 300Hz-3kHz @ 2.83V/1m, Erin's Audio Corner) |
| Weight | 102.1 lbs / 46.3 kg |
| Woofer Cabinet | ported, down-firing |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Polk Audio Reserve R700 vs Q Acoustics 5040
- Polk Audio Reserve R700 vs Emotiva Airmotiv T2+
- Polk Audio Reserve R700 vs PSB Imagine T65
- Polk Audio Reserve R700 vs ELAC DF63
- Polk Audio Reserve R700 vs JBL HDI-3600
- Polk Audio Reserve R700 vs Polk Reserve R500
- Polk Audio Reserve R700 vs KEF R11 Meta
- Polk Audio Reserve R700 vs Revel Concerta2 F35
- See all 16 comparisons
Klipsch Heresy IV: $3,198/pair Amazon Crutchfield
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.
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 (-3dB) | 77Hz (measured, Erin's Audio Corner) |
|---|---|
| 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) |
| Weight | 45 lb each |
| Woofer Cabinet | ported, rear |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Klipsch Heresy IV vs Klipsch Forte IV
- Klipsch Heresy IV vs KEF Q11 Meta
- Klipsch Heresy IV vs Infinity Primus 360
- Klipsch Heresy IV vs Definitive Technology BP-9020
- Klipsch Heresy IV vs Klipsch RP-5000F II
- Klipsch Heresy IV vs SVS Ultra Evolution Pinnacle
- Klipsch Heresy IV vs Polk Reserve R500
- Klipsch Heresy IV vs ELAC DF63
- See all 14 comparisons