Polk Audio Reserve R500 Floorstanding Speaker

A Ring Radiator Tweeter, Scaled for an Entry-Level Tower

The Polk Audio Reserve R500 is a 2-way floorstanding tower built around a 1-inch Pinnacle Ring Radiator tweeter and two 5.25-inch Turbine Cone woofers, crossing over at 2,500 Hz.

Polk rates sensitivity at 87 dB, and the cabinet accepts 8-ohm, 6-ohm, or 4-ohm amplifiers (3.9 ohms minimum) rated between 25 and 200 watts — an easy load for most integrated amps and receivers.

The cabinet is available in Black or Brown, and each tower is sold on its own, so a stereo pair means ordering two, one for each channel of a stereo system.

Where the Ring Radiator and Turbine Cones Earn Their Keep

A Ring Radiator Tweeter Above Twin Turbine Cone Woofers

The 1-inch Pinnacle Ring Radiator tweeter uses a ring-shaped diaphragm rather than a solid dome, extending high-frequency detail while keeping distortion low at the very top of the audible range.

Below 2,500 Hz, two 5.25-inch Turbine Cone woofers take over, their ribbed cone profile adding stiffness without adding weight, for a driver that resists flexing under hard use, night after night.

The Numbers, and What They Ask of Your Amplifier

Polk quotes a frequency response of 35 Hz to 50 kHz overall, with -3dB points at 49 Hz and 36 kHz. Sensitivity is 87 dB, and the cabinet accepts 8-ohm, 6-ohm, or 4-ohm amplifiers, with a 3.9-ohm minimum impedance.

The cabinet is rear-ported using Polk's X-Port design, with internal Eigentone filters built into the port itself to control resonance and reduce chuffing at high output, even when you push the volume.

Who Is This Floorstanding Speaker Best For?

• You want genuine high-frequency clarity from a ring tweeter — Polk's Pinnacle Ring Radiator extends detail while keeping distortion low
• You want real certifications, not just marketing claims — the R500 is independently Hi-Res Audio and IMAX Enhanced certified, not just associated with the Reserve line generally
• You want a real choice of finishes — Black or Brown, both ready to match a real room
• Your amplifier delivers a modest, easy-to-drive amount of power — 87 dB sensitivity and an 8/6/4-ohm compatible load suit amplifiers between 25 and 200 watts
• You want real floorstanding bass without a separate subwoofer — the R500 reaches to 35 Hz on its own. For the deepest home-theater effects, add one of our subwoofers and let the towers do what they do best

How Does It Connect to Your System?

Connect each tower to an amplifier or receiver's speaker outputs using the single pair of binding posts on the rear panel. An 8-ohm, 6-ohm, or 4-ohm amplifier all work, with a 3.9-ohm minimum impedance to plan around.

Since the cabinet is rear-ported, leave a few inches of clearance behind each tower before settling on a final position.

Two cables, two speakers, and you are listening.

Pairs Well With

What finishes the system around a pair of Reserve R500 towers:

• Integrated amplifiers — an easy 8-ohm load most integrated amps drive comfortably
• AV receivers — put the IMAX Enhanced certification to work in a home theater setup
• Speaker cables — connect to the rear binding posts
• Audio racks — house the electronics driving a certified tower

Frequently Asked Questions

How much amplifier power do I need?

Polk recommends amplifiers between 25 and 200 watts, compatible with 8-ohm, 6-ohm, or 4-ohm loads. At 87 dB sensitivity, most integrated amps and receivers in that range drive it comfortably.

What do Hi-Res Audio and IMAX Enhanced certification mean?

Both are independent certification programs the R500 has actually earned, not just marketing language associated with the Reserve line generally — confirmation that it meets each program's own technical standard.

How far from the wall should I place them?

Since the cabinet is rear-ported, give each tower some room behind it. Moving it closer to the wall adds bass warmth; pulling it out tightens and tames the low end.

What finishes are available?

Black or Brown, both ready to match a real room.

What's the warranty?

Polk covers the Reserve R500 for five years against manufacturing defects, its standard warranty for passive tower speakers.

Do I need a subwoofer with these speakers?

Not necessarily. The R500 reaches to 35 Hz on its own, though a subwoofer can still add reach for home theater use.

See It in Action

Erin's Audio Corner reviews the Reserve R500:

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Learn More

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