Hop on over to Monoprice to Buy Monolith by Monoprice THX-365IW THX Certified Ultra 3-Way In-Wall Speaker
Get This DealThe Price and codes are working at time the deal was posted. Please check the price.

The THX® In‑Wall Speaker Series has been engineered to deliver the highest level of accuracy and reproduce all the dynamics and detail of the best home theater soundtracks and music. Each speaker has been THX® Certified Ultra, ensuring optimal frequency response, dispersion, and low distortion. THX Certification ensures that the sound from the speaker is as the audio engineer intended. The THX‑365IW features premium drivers, THX Certification, a sophisticated crossover network, and an HDF cabinet to ensure that you’ve never experienced home theater sound that is this dynamic, detailed, or immersive from an in‑wall speaker.
Tested. Approved. Certified.
THX® Engineers complete hundreds of different scientifically formulated tests to ensure the highest audio standards possible. Key tests in this program are as follows:
Axial Frequency Response
This describes a loudspeaker’s ability to reproduce audio accurately. Our test confirms the axial frequency response is balanced and flat.
Vertical and Horizontal Dispersion
Not everyone gets the middle seat when watching a movie. So we test the off‑axis response to make sure it is smooth with no audible comb filtering, making every seat in the room the sweet spot.
Output Versus Distortion
This test ensures the speaker can reach the high volumes necessary to achieve THX® Reference Level without creating audible distortion or artifacts.
High‑Excursion Woofers. Silk Dome Midrange. Silk Dome Tweeter.
Featuring carefully selected drivers that deliver a flat frequency rsponse in the listening window, the THX-LCR features two 6.5" woofers, a 2" silk dome midrange, and a 1" silk dome tweeeter. The silk dome midrange operated in the 550Hz~1.9kHz range, improving power handling, lowering distortion, and improving the polar response, which allows the speaker to achieve higher SPL. The 6.5" high‑excursion woofers feature long fiber pulp cones, NBR surrounds, and are design with shorting rings to keep distortion at a minimum. The combined driver design enables each speaker to reach sonic heights and deliver accurate sound for the best in home theater dynamics and detail.
The THX® speaker series feature carefully selected fourth‑order Linkwitz‑Riley crossover network acoustic filters. This sophisticated crossover minimizes sonic frequency overlap, reduces distortion, and is an excellent choice to minimize off‑axis response errors near the crossover frequency.
The heavy‑duty mounting tabs make for a fast and problem‑free installation. The magnetic, detachable grille is powder‑coated in white and can be painted to match any decor.
Same Drivers. Same Landscape. LCR Design.
The Monolith™ THX® Certified in‑wall and in‑room speakers use the ssame drivers and crossover components, allowing the speakers to be mixed and matched to suit your room! Use in‑wall speakers for the rears and in‑room speakers for the LCR and you will remain timbre matched across the Monolith THX family.
5 Year Replacement Warranty
Monoprice™ not only stands behind this product with a 5 year replacement warranty, we offer a 45 day money back guarantee as well! If the product you purchase does not satisfy your needs, send it back for a full refund.
45 Day Money Back Guarantee
Monoprice stands behind the Monolith line of products we sell with a 45 day money back guarantee! If the product you purchase does not satisfy your needs, send it back for a full refund.
Quality at a Fair Price
Monoprice’s rugged design and rigid quality control standards deliver high quality products at fair prices.
Hassle Free Packaging
Monoprice exists to bring simplicity, fairness, and confidence to technology choices. This product features recyclable packaging that is simple to open, cost effective, with minimal waste, and fully protective as it travels to you.
Service and Support
You’re never on your own with Monoprice products! We have a full team of friendly and knowledgeable technicians available to answer your questions, both before and after the sale. Contact our technical support team for questions about our products, troubleshooting, or even suggestions for products to fit your particular needs. Not to be outdone, our friendly and helpful customer service team is here to make your ordering, delivery, and any possible returns a quick and painless operation, from start to finish!
Support Files:
Cutout Template (Apr 15, 2019)
Monoprice™, Monolith™, the Monolith logo, and all Monoprice logos are trademarks of Monoprice Inc.
THX® and the THX logo are the property of THX Ltd., registered in the U.S. and other countries.
Updated Apr 7, 2022
Warning: This product can expose you to Phthalates, which is known to the State of California to cause cancer and reproductive harm. For more information, go to www.P65Warnings.ca.gov

Order now: Monoprice THX-365IW THX Certified Ultra 3-Way In-Wall Speaker – $350 from monoprice.com