Coverage note. Speaker Ranking currently covers 4 Monolith models across passive speakers. These are the products in our database, not a complete list of everything Monolith makes.
What this page covers. The Monolith models ranked here span passive speakers, including Monolith THX-365IW, Monolith Encore B6 and Monolith Encore T6. Use each model’s category position to compare it with alternatives of the same size and use case.
This page lists all 4 Monolith speakers ranked on this site across passive speakers. Each model is shown in the category where it competes, with its current rank and the size of that ranking.
Use the category position rather than the brand name alone: speakers from the same manufacturer can perform very differently by size, price and product family.
Prices on this page were last checked September 30, 2026 at 2:57 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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Large Size Bookshelf Speakers
Ranked #65 of 134 in Large Size Bookshelf Speakers - Monolith Encore B6: $360 per pair Amazon Monoprice eBay
Pros: For its budget price, the B6 delivers useful midbass punch and a long reflex tail: Erin measured F3 at 68Hz and F10 near 37Hz. The revised tweeter assembly yields broadly smooth horizontal directivity and an early-reflections trend that accepts EQ well. At sane levels, its 6.5-inch pulp woofer provides satisfying attack, and gloss top/bottom panels plus a braced MDF cabinet are unusually substantial for the class. Measured bass extension of 68Hz (-3dB), with a measured sensitivity of 85.3dB.
Cons: Erin measured 85.3dB sensitivity and a 3.4-ohm minimum, so this is not an easy load despite its modest output ceiling. Low-frequency compression reaches about 2dB and distortion rises rapidly when driven full-range; use an 80Hz subwoofer crossover. Response variation is roughly +2.7/-3.7dB, with residual crossover/treble irregularities that keep it from true neutrality without EQ. The listening window tightens vertically, so ear height matters.
Full Monolith Encore B6 review and specifications →
| Bass Extension (-10dB) | 37Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 68Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 15.7H x 7.9W x 9.9D inches |
| Drivers | 6.5-inch pulp woofer; 25mm waveguided silk dome |
| Impedance | 4 ohms nominal; 3.4 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 85.3dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 4.67 |
| Spinorama Preference Score with Perfect Sub | 6.93 |
| Weight | 15.4 lbs (7.0 kg) each |
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- Monolith Encore B6 vs Klipsch RP-600M II
- Monolith Encore B6 vs StarkSound Beta 5
- Monolith Encore B6 vs Parts Express Samba MT
- Monolith Encore B6 vs ELAC Debut 3.0 DB63
- Monolith Encore B6 vs Emotiva Airmotiv XB2
- Monolith Encore B6 vs KEF R3
- Monolith Encore B6 vs KEF Q Concerto Meta
- Monolith Encore B6 vs KEF R3 Meta
Large Size Floorstanding Speakers
Ranked #47 of 74 in Large Size Floorstanding Speakers - 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 |
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Ranked #48 of 74 in Large Size Floorstanding Speakers - 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 |
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In-Wall & In-Ceiling Speakers
Ranked #7 of 18 in In-Wall & In-Ceiling Speakers - Monolith THX-365IW: $999.98 per pair Amazon Monoprice eBay
Pros: Audio Science Review’s retest measured a preference score of 5.23, or 7.64 with a perfect subwoofer, with -3dB at 54.6Hz and -6dB at 42.8Hz, deep bass for an in-wall speaker. Directivity is well controlled (SPDI deviation 2.09dB) and on-axis smoothness is 0.70. It is a THX Ultra certified three-way, with two 6.5” woofers, a dedicated 2” silk dome midrange and a 1” silk dome tweeter, rated at 89.5dB sensitivity, which ASR’s measurement confirmed at 89.4dB. The 5-year warranty is longer than most in-wall speakers get. Measured bass extension of 54.6Hz (-3dB).
Cons: ASR’s first measurement of this speaker scored far lower (preference score 1.33, or 5.10 with a subwoofer, with -3dB at 108Hz), so results depend heavily on how it is installed and enclosed. Monoprice positions it for rear and surround channels and suggests in-room speakers up front, and the ASR reviewer said he would pick something better for a front left or right. Impedance dips to about 2.9 ohms, so the amplifier needs to be comfortable with a low load. At $500 each a stereo pair costs twice that.
Full Monolith THX-365IW review and specifications →
| Bass Extension (-10dB) | 31.1Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 54.6Hz (measured, Audio Science Review) |
| Certification | THX Ultra |
| Crossover Frequency | 550Hz, 1,900Hz (4th-order Linkwitz-Riley) |
| DIY Kit | No |
| Dimensions | 22.7”H x 11.1”W x 3.8”D (577 x 282 x 97 mm) |
| Drivers | 2x 6.5” high-excursion long-fiber pulp cone woofers, 2” silk dome midrange, 1” silk dome tweeter (3-way) |
| Enclosure | In-wall, passive 3-way with dog-ear mounting tabs |
| Impedance | 4 ohms nominal (about 2.9 ohm minimum) |
| Power Handling | 160W maximum |
| Sensitivity | 89.5dB |
| Spinorama Preference Score | 5.23 |
| Spinorama Preference Score with Perfect Sub | 7.64 |
| Warranty | 5 years |
| Weight | 19.6 lbs (8.9 kg) |
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