Coverage note. Speaker Ranking currently covers 7 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-365C, Monolith THX-365IW and Monolith THX-LCR. Use each model’s category position to compare it with alternatives of the same size and use case.
This page lists all 7 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 October 16, 2026 at 5:46 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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Every Monolith model 7
- Monolith THX-365IW
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.
Amazon $499.99 Monoprice $499.99 eBay$999.98per pair - Monolith Encore B6 Discontinued
For its budget price, the B6 delivers useful midbass punch and a long reflex tail: Erin measured F3 at 68Hz and F10 near 37Hz.
eBay$360per pair - Monolith Encore T6 Discontinued
Three 6.5-inch pulp-cone drivers provide more displacement and cleaner cinema output than the B6, with good compression behavior at normal levels.
eBay$800per pair - Monolith THX-365T Discontinued
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.
eBay$1,000per pair - Monolith THX-365C Discontinued
A THX Ultra certified sealed three-way center with a 1” silk dome tweeter, a 2” silk dome midrange and two 6.5” woofers.
eBay$499.99each - Monolith Encore C6 Discontinued
A budget two-way center with a 1” silk dome tweeter in a waveguide between two 6.5” woofers.
eBay$249.99each - Monolith THX-LCR Discontinued
A three-way THX Ultra in-wall LCR with two 6.5” woofers, a 2” silk dome midrange and a 1” silk tweeter, rated at 88.5dB.
eBay$798per pair
