Short answer: the Monolith Encore T6. It ranks #47 of 73 floorstanding speakers by sound quality, rated 4.0/5, at $800; the Monolith THX-365T ranks #48, rated 3.9/5, and costs $900, which makes this an easy call rather than a real tradeoff.
What the Monolith Encore T6 does well: Three 6.5-inch pulp-cone drivers provide more displacement and cleaner cinema output than the B6, with good compression behavior at normal levels. Watch for: Despite its size, Erin measured F3 around 68Hz, so the tower does not eliminate the need for a subwoofer.
What the Monolith THX-365T does well: The coaxial midrange/tweeter produces coherent horizontal and vertical coverage through most of the vocal band, while twin 6.5-inch woofers deliver good 88.6dB measured sensitivity. Watch for: Erin measured F3 at 84Hz (F10 roughly 40Hz), so it categorically needs a subwoofer.
Buy the Monolith Encore T6. It is rated higher for sound quality than the Monolith THX-365T and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| Monolith Encore T6 | Monolith THX-365T | |
|---|---|---|
| Price | $800 per pair | $900 per pair |
| Ranked | #47 of 73 in Large Size Floorstanding Speakers | #48 of 73 in Large Size Floorstanding Speakers |
| Bass Extension (-3dB) | ~68Hz (measured, Erin’s Audio Corner) | 84Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 31.1Hz (measured, Erin’s Audio Corner) | ~40Hz (measured, Erin’s Audio Corner) |
| Sensitivity | 87.8dB/2.83V/1m (manufacturer) | 88.6dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Impedance | 4 ohms nominal | 4 ohms nominal; nearly 3 ohms minimum (measured, Erin’s Audio Corner) |
| Drivers | Three 6.5-inch pulp woofers; 25mm waveguided silk dome | Dual 6.5-inch woofers; 2-inch coaxial midrange/1-inch dome; 5.25-inch Atmos coaxial |
| Dimensions | 40H x 7.9W x 13.8D inches | 22.9”H x 9.7”W x 10.8”D (581 x 246 x 275 mm) (without grille) |
| Weight | 49.2 lbs (22.3 kg) each | 28.4 lbs (12.9 kg) each |
| Spinorama Preference Score | 4.57 | 3.83 |
| Spinorama Preference Score with Perfect Sub | 6.45 | 6.90 |
| DIY Kit | No | No |
| Enclosure | - | Sealed |
Related Speaker Comparisons
How Monolith Encore T6 compares with other leading options:
- Revel Concerta2 F35 vs Monolith Encore T6
- Infinity Primus 360 vs Monolith Encore T6
- Monolith Encore T6 vs JBL Stage 2 280F
- Revel Concerta2 F35 vs Monolith THX-365T
- Klipsch RP-5000F II vs Monolith THX-365T
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The Two Speakers In Full
Monolith Encore T6: $800 per pair Amazon Monoprice eBay
Pros: Three 6.5-inch pulp-cone drivers provide more displacement and cleaner cinema output than the B6, with good compression behavior at normal levels. Erin found the revised waveguided tweeter’s horizontal radiation consistent enough for predictable EQ, while the gloss-capped, heavily braced 49lb cabinet feels far above its price. The tower can produce useful midbass impact when crossed to a subwoofer. Measured bass extension of ~68Hz (-3dB).
Cons: Despite its size, Erin measured F3 around 68Hz, so the tower does not eliminate the need for a subwoofer. The native response needs equalization: crossover-region unevenness and excess top-octave energy prevent a fully neutral presentation. The four-ohm load and low-frequency phase angle warrant a robust amplifier, and the tall multi-driver array creates a narrower vertical listening window than a compact two-way.
Full Monolith Encore T6 review and specifications →
| Bass Extension (-10dB) | 31.1Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | ~68Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 40H x 7.9W x 13.8D inches |
| Drivers | Three 6.5-inch pulp woofers; 25mm waveguided silk dome |
| Impedance | 4 ohms nominal |
| Sensitivity | 87.8dB/2.83V/1m (manufacturer) |
| Spinorama Preference Score | 4.57 |
| Spinorama Preference Score with Perfect Sub | 6.45 |
| Weight | 49.2 lbs (22.3 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Monolith THX-365T: $900 per pair Amazon Monoprice eBay
Pros: The coaxial midrange/tweeter produces coherent horizontal and vertical coverage through most of the vocal band, while twin 6.5-inch woofers deliver good 88.6dB measured sensitivity. Erin found low distortion above the bass and useful dynamic capacity for home theater; the sealed enclosure also makes the intended 80Hz THX crossover predictable. An integrated up-firing Atmos module and THX Ultra certification make this a compact, unusually versatile LCR/tower. Measured bass extension of 84Hz (-3dB), with a measured sensitivity of 88.6dB.
Cons: Erin measured F3 at 84Hz (F10 roughly 40Hz), so it categorically needs a subwoofer. Native response has enough upper-mid/treble irregularity that Erin recommended it only with EQ. Although mostly above four ohms, impedance falls to nearly 3 ohms with an adverse phase angle, potentially stressing an AVR; a separate four-ohm-capable amplifier is prudent. The Atmos module adds cost and height but cannot substitute for properly placed ceiling speakers.
Full Monolith THX-365T review and specifications →
| Bass Extension (-10dB) | ~40Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 84Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 22.9”H x 9.7”W x 10.8”D (581 x 246 x 275 mm) (without grille) |
| Drivers | Dual 6.5-inch woofers; 2-inch coaxial midrange/1-inch dome; 5.25-inch Atmos coaxial |
| Enclosure | Sealed |
| Impedance | 4 ohms nominal; nearly 3 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 88.6dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 3.83 |
| Spinorama Preference Score with Perfect Sub | 6.90 |
| Weight | 28.4 lbs (12.9 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons