Polk Audio RTi6 Bookshelf Speakers – Real Wood, Bi-Wireable

Polk Audio RTi6 Bookshelf Speakers – 6.5-Inch Dynamic Balance Woofer, Silk Dome Tweeter, Black Oak Real Wood Veneer, Very Good Condition

The largest bookshelf speaker in Polk’s RTi range, in real black oak veneer, and built to a standard the price never suggested.

Dynamic Balance Drivers

The driver work is where Polk put the money. The 6.5-inch mid/bass cone is a polymer composite on butyl rubber surrounds, developed under the Dynamic Balance programme — Polk used laser interferometry to watch a cone flex in real time and then chose materials and geometry that push the resonances out of the audible band rather than damping them afterwards. Above it sits a 1-inch silk and polymer dome on a neodymium magnet, heat-sinked so it holds up under sustained level rather than compressing when the evening gets going.

The Twin Ports

There are two ports, not one. A conventional vent sits on the front baffle below the woofer, and Polk’s Power Port fires from the rear through a cone-shaped diffuser that spreads the air rather than letting it exit as a column. The second port is the ARC vent, which Polk fits to clean up the midrange rather than to extend the bass. The practical result is a bookshelf speaker that reaches 50 Hz honestly, which is genuinely low for a cabinet this size and enough that many rooms will not want a subwoofer at all.

Cabinet and Real Wood Veneer

The cabinet is all-MDF with extensive internal bracing, and the grilles float on their mounts to keep the frame from adding diffraction of its own. Inside the crossover, Mylar bypass capacitors sit across the main parts to sharpen the top end. Small choices, and not ones usually made at this level.

Connections

Connection is through dual gold-plated five-way binding posts, so these can be bi-wired or bi-amped if you want to, and simply strapped and driven normally if you do not. The posts take bare wire, spades, pins or bananas.

Amplifier Matching

At 89 dB sensitivity into 8 ohms and rated to 125 watts, they are undemanding to drive and will take a serious amplifier if you have one. They are magnetically shielded, so they can sit either side of a television without disturbing the picture, and there is a keyhole slot on the back for wall mounting.

Measure Your Shelf First

One measurement worth noting before you buy: these are over 14 inches deep. That is a real bookshelf speaker rather than a compact monitor, and a shallow shelf will not take one.

Condition

This pair is in very good condition, in black oak real wood veneer.

What Owners Say

Owners rate the RTi6 at 4.2 out of 5 on AudioReview. Real veneer, real bracing, bi-wireable posts and honest bass to 50 Hz — a bookshelf speaker that behaves like a small floorstander and takes up rather less room doing it.

Features

• 6.5-inch Dynamic Balance polymer composite cone, butyl rubber surround
• 1-inch silk and polymer dome tweeter, neodymium magnet, heat-sinked
• Front vent plus rear-firing Power Port with cone diffuser
• ARC port for midrange control
• All-MDF cabinet with extensive internal bracing
• Floating anti-diffraction grilles
• Mylar bypass capacitors in the crossover
• Dual gold-plated five-way binding posts — bi-wire or bi-amp capable
• Magnetically shielded for placement beside a television
• Keyhole slot for wall mounting
• Black oak real wood veneer

Polk Audio RTi6 Bookshelf Speakers Specifications

• Model: RTi6
• Design: Two-way bass reflex bookshelf loudspeaker
• Mid/Bass Driver: 6.5 in Dynamic Balance polymer composite cone
• High Frequency Driver: 1 in silk/polymer dome, neodymium magnet
• Frequency Response: 50 Hz to 26,000 Hz (-3 dB)
• Sensitivity: 89 dB
• Impedance: 8 ohms
• Power Handling: Up to 125 watts
• Terminals: Dual gold-plated five-way binding posts
• Shielding: Magnetically shielded
• Finish: Black oak real wood veneer
• Dimensions: (Width x Height x Depth) 7.8 x 14.75 x 14.2 inches (198 x 375 x 361 mm)
• Weight: 16.7 lbs (7.57 kg) each

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