Speaker 揚聲器 / Polk Audio / CSiA4
CSiA4

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

Introduction

Black / Cherry

Specification

Driver Complements
Mid/Woofer 2 - 6 1/2" Diameter (16.51cm)
Polymer Composite Dynamic Balance with rubber surround
Midrange 2 - 5 1/4" Diameter (13.34cm)
Polymer Composite Dynamic Balance with rubber surround
Tweeter 1 - 1" Diameter (2.54cm)
Silk Polymer Dome Tweeter 1 - 1" Diameter (2.54cm)
Silk Polymer Dome Tweeter
Electrical
Overall Frequency Response 55Hz-27kHz 45Hz-27kHz
Lower -3dB Limit 65 Hz dB 55Hz dB
Upper -3dB Limit 26 kHz dB 26kHz dB
Nominal Impedance 8 ohms 8 ohms
Recommended Amplifier Power 20-180 w/channel 20-200 w/channel
Efficiency 89 dB 90 dB
Crossover
(mid-high array) cascaded second order on the mid-basses and a second order on the tweeter, centered at about 2.2kHz.
Inputs 5-way binding posts 5-way binding posts
Dimensions
Cabinet Size 6 7/8" H x 20" W x 8 3/4" D
(17.46cm H x 50.80cm W x 22.23cm D) 7 3/4" H x 24" W x 14" D
(19.68cm H x 60.96cm W x 35.56cm D)
Enclosure Type Vented via ARC Port Vented with dual PowerPort & single Arc Port

Feature

Compact RTi A Center
CSi A4 is the smaller brother to the CSi A6. It fits where the CSi A6 may be too large. It also features the same high quality components and has the angled top- so you can place the speaker upside down to aim at the listening area.