Short answer: the Klipsch RP-5000F II. It ranks #126 of 228 floorstanding speakers by sound quality (rated 4.0/5) at $859.98 and is still sold new; the Monolith THX-365T ranks #137 (rated 3.9/5) and is discontinued, so it is only an option used.
The Klipsch RP-5000F II is the more accurate, deeper-bass option. The most balanced sounding tower in its series, with precise imaging from its horn tweeter at a moderate price. Its measured preference score, a predictor of how neutral it sounds, is 5.24 against 3.83 for the Monolith THX-365T. Its bass reaches about 55Hz before falling 3dB, against 84Hz for the Monolith THX-365T. The catch: Bass extension is underwhelming for a floorstander (F3 at 55Hz, F10 at 41Hz) and needs a subwoofer.
Why pick the Monolith THX-365T: A versatile home theater tower with a coaxial midrange and tweeter, a built in Atmos module and THX certification. The catch: Erin measured F3 at 84Hz (F10 roughly 40Hz), so it categorically needs a subwoofer.
Buy the Klipsch RP-5000F II. It is rated higher for sound quality and still sold new, while the Monolith THX-365T is discontinued.
Want more options? Browse the full Passive Home rankings.
Measured Differences
- Close enough not to matter: bass extension (41 Hz vs 40 Hz, 10 dB down); preference score with a subwoofer (7.2 vs 6.9).
Prices on this page were last checked November 14, 2026 at 6:17 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| Klipsch RP-5000F II | Monolith THX-365T | |
|---|---|---|
| Price | $859.98 per pair | $1,000 per pair Discontinued |
| Ranked | #126 of 228 in Large Size Floorstanding Speakers | #137 of 228 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 41Hz (measured, Erin’s Audio Corner) | ~40Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 55Hz (measured, Erin’s Audio Corner) | 84Hz (measured, Erin’s Audio Corner) |
| Sensitivity | 90dB (2.83V/1m, measured by Erin’s Audio Corner) | 88.6dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Drivers | 1” titanium tweeter with Tractrix horn, dual 5.25” cerametallic woofers | Dual 6.5-inch woofers; 2-inch coaxial midrange/1-inch dome; 5.25-inch Atmos coaxial |
| Weight | 38.6 lbs (17.5 kg) | 28.4 lbs (12.9 kg) each |
| Impedance | 8 ohms nominal, 3.3 ohms minimum (measured above 80Hz, Erin’s Audio Corner) | 4 ohms nominal; nearly 3 ohms minimum (measured, Erin’s Audio Corner) |
| Frequency Response | 40Hz - 25kHz (+-3dB, Manufacturer specified) | - |
| Crossover Frequency | 1900Hz | - |
| Power Handling | 100W continuous, 400W peak | - |
| Dimensions | 36.1” x 8.1” x 14.8” (917 x 207 x 375 mm) | 22.9”H x 9.7”W x 10.8”D (581 x 246 x 275 mm) (without grille) |
| Woofer Cabinet | ported, rear | - |
| Spinorama Preference Score | 5.24 | 3.83 |
| Spinorama Preference Score with Perfect Sub | 7.25 | 6.90 |
| DIY Kit | No | No |
| Enclosure | - | Sealed |
Where the Ratings Come From
- Klipsch RP-5000F II: Spinorama.org measurements and reviews by Erin’s Audio Corner.
- Monolith THX-365T: Spinorama.org measurements and reviews by Erin’s Audio Corner video.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
Related Speaker Comparisons
More top alternatives to Klipsch RP-5000F II: