Polk CSi A4 CenterSpeaker Black

Polk CSi A4 Center Speaker Black delivers premium, clear dialogue and immersive sound in a compact design, perfect for smaller home theatre setups with limited space.

Key Features

• Compact centre speaker ideal for smaller spaces
• Angled top design allows upside-down placement to aim sound at the listening area
• Curved cabinet styling with real wood finish available in black or cherry
• Dynamic Balance and Klippel Optimized drivers for distortion-free sound at all volumes
• Damped Asymmetric Hex Laminate Isolation (DAHLI) cabinet for clean, accurate sound
• High-quality gold-plated 5-way binding post inputs for secure connections
• Bi-wire and bi-amplification capable (tower and bookshelf models)

Design and Build

The CSi A4 is the smaller sibling of the CSi A6, designed to fit where the A6 may be too large. Its curved, teardrop-shaped cabinet reduces panel resonances for less audible coloration while adding an elegant look. The real wood finish complements your room décor, with options in black or cherry.

Advanced Audio Technology

Polk’s Dynamic Balance technology uses laser analysis to minimise sound-colouring artefacts, while Klippel Optimization ensures consistent performance at both low and high volume levels. Together, these technologies deliver natural, detailed midrange and excellent bass extension.

Premium Connections

The speaker features gold-plated 5-way binding post inputs for a snug and reliable connection. Unlike cheaper alternatives, Polk avoids spring clips or plastic terminals, ensuring durability and optimal signal transfer.

Endorsements

Stereophile’s Robert J. Reina praised the RTiA1 series, highlighting its natural midrange and exceptional bass for the size and price, making it a versatile choice for music lovers.