Polk Audio 90-RT 3-Way in-Ceiling Speaker
- 9 inch woofer, 3-way design
- 125 watts maximum power
- Magnetic Sheer-Grille protrudes only 7mm
- Mounting template included
- Single speaker, 13.3 by 15.5 inch frame
- 2 year warranty, 9.5 pounds
Updated 2 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A single large in-ceiling speaker for the main channels of a home theater, sold one at a time. Its listed connectivity is mixed, so plan on a wired amplifier.
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ASIN: B0057XVZYUModel: 90 RTCategory: Ceiling & In-Wall Speakers
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Overview
Polk calls the 90-RT a Vanishing Series built-in speaker for stealth mains, rears and side surrounds. Its Sheer-Grille is a thin, magnetically held grille that lies nearly flush, with small perforations that stay acoustically inert.
Choose it for a big woofer behind a thin grille, in a room that should hide its speakers. The limit is that it is one speaker, and the listing includes entries that clash, including a Bluetooth field.
Who it's for
A living room with in-ceiling wiring and a receiver suits it, with other Polk RTi speakers in the same system. People looking for a pair in one box, or for wireless operation, should plan accordingly.
Pros and cons
- Thin magnetic grille
- Mounting template included
- Timbre-matched to RTi speakers
- Paintable grille instructions included
- Sold as a single
- Bluetooth field conflicts
- Cutout size not listed
- Needs external amplifier
Performance notes
A large woofer and a separate tweeter cover bass, mids and highs, while the thin grille avoids blocking treble. The ceiling cavity acts as the enclosure. Timbre matching helps tone stay consistent with other Polk speakers in the room.
Specifications
| Brand | Polk Audio |
|---|---|
| Model | 90 RT |
| Dimensions & fit | |
| Audio driver size | 9 inches |
| Woofer diameter | 9 inches |
| Item dimensions d x w x h | 13.3"D x 15.5"W x 11.3"H |
| Item weight | 9.5 pounds |
| Capacity & performance | |
| Speaker maximum output power | 125 watts |
| Construction & materials | |
| Color | White |
| Enclosure material | Mineral-filled polypropylene, silk/polymer, and metal (for the grille) |
| Compatibility & installation | |
| Mounting type | Ceiling Mount |
| Connectivity protocol | Wired (RCA, Speaker Wire) |
| Warranty & support | |
| Warranty description | 2 years |
| Other details | |
| Speaker type | In Ceiling |
| Impedance | 8 ohm |
| Number of items | 1 |
| Builtin media | In-ceiling speaker, Mounting template, Online Registration Card, Owner's Manual, Polk Audio product brochure, Sheer-Grille Painting instructions, White metal grille |
Frequently asked questions
How do you paint the Polk 90-RT grille?
The listing includes Sheer-Grille painting instructions in the box. The grille is held on magnetically.
What comes with the 90-RT?
An in-ceiling speaker, mounting template, online registration card, owner's manual, a Polk brochure, Sheer-Grille painting instructions and a white metal grille.
Is the Polk 90-RT a pair?
No. The item count is 1.