Polk Reserve R350 is a slim sealed speaker that can serve as a centre channel or as one part of a matching left, centre and right front stage. Its 141 mm height fits below screens that cannot accommodate a conventional deep centre cabinet.
Four 4-inch Turbine Cones share the bass and midrange around a central Pinnacle Ring Radiator. Because the enclosure is sealed, the R350 does not depend on open space behind a port and can mount on a suitable wall using its keyhole slots.
One R350 makes a discreet dialogue speaker; three create a uniform front row when furniture and screen width allow. Check the 762 mm cabinet length carefully and use an amplifier stable at its 3.9-ohm minimum.
For official details on Polk Reserve R350 Slim LCR Speaker (Black), view the Polk Reserve R350 product page.
| ITEM | DESCRIPTION |
| Left, centre or right use | A single shallow model can form one or all three screen channels. |
| Four Turbine Cones | Multiple small drivers spread output along the wide front baffle. |
| Sealed cabinet | No reflex port makes wall and close-furniture placement more predictable. |
| Integrated keyhole slots | The R350 can mount directly to a suitably prepared wall. |
| DETAIL | VALUE |
| Speaker type | Slim sealed LCR or centre channel |
| Overall frequency response | 50 Hz to 50 kHz |
| Response at -3 dB | 75 Hz to 38 kHz |
| Sensitivity | 87 dB at 2.83 V per metre |
| Amplifier compatibility | 8, 6 or 4 ohm outputs |
| Minimum impedance | 3.9 ohms |
| Recommended amplifier power | 25 to 200 W |
| Crossover frequencies | 1.4 kHz and 2.7 kHz |
| Driver complement | 4 × 4 inch Turbine Cones and 1 × 1 inch Ring Radiator |
| Dimensions | 762 × 141 × 187.5 mm |
| Weight | 9 kg |
| Sold as | Single speaker |
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