affordable, high performance speakers

Polk Audio at Northcoast Audio


The Polk Audio RTi Series Speakers

RTi A Series Speakers sound as great as they look! The perfect solution for a premium home theater or music system, these speakers will make you think you're in the movie or front row at the concert. RTi A speakers feature HUGE dynamic range- suitable for today's high resolution and high impact sources such as Blu-Ray, HDTV, SACD and more.

On Display at Northcoast Audio

We currently demonstrate the RTi A7 and A5 on active display in our showroom.

Come see and experience our selection of Polk Audio speaker products at our Eureka, CA showroom today.

Northcoast Audio is a Polk Audio authorized high fidelity dealer


visit the Polk Audio website

RTi A7

High Performance floorstanding loudspeakers

$999 / pair

42 1/4" H x 8 7/8" W x 17 7/8" D

2 - 7" Diameter Woofers(17.78cm)

1 - 6 1/2" Diameter Mid -range (16.51cm)


Recommended 20-300 watts per channel

89 dB

RTi Speakers

RTi A1

RTi A5

RTi A7

RTi A9

TSi Speakers





Blackstone Home Theater speakers


Vanishing Series in-wall speakers

LSi M Flagship speakers

LSi M707

LSi M705

LSi M703

LSi M706c

LSi M704c

LSi M702


Northcoast Audio is proud to be the Exclusive for


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Northcoast Audio is proud to be an authorized dealer for the best names in home audio speakers today, Including Danish made loudspeakers from Dali and Dynaudio, The famous KEF speakers from the UK, Velodyne Subwoofers, The world renown American Made Magnepan Magneplanar speakers as well as local favorites Polk Audio and Boston Acoustics.

Northcoast Audio is an authorized polk audio dealer

Located at 5th & C streets in Eureka, CA - Northcoast Audio invites you to come audition the best selection of quality hi-fi speakers in Humboldt County

Northcoast Audio, your local Polk Audio dealer Eureka, California serving clients in Northern California and Southern Oregon.


We do not sell out of our local area unless you have visited our showroom. Buy local - support your local independent audio video specialist!