
Speaker and Volume Controller
CS-6521 Frameless Coaxial Ceiling Speaker
CS-6521 is a frameless coaxial ceiling speaker, suitable for office spaces, department stores, public areas, or small conference rooms.
・Features a coaxial design with a 6.5-inch woofer and a 1-inch tweeter, delivering clear and full sound.
・Features an 85Hz-20kHz bandwidth and a maximum SPL of 110dB, delivering clear sound even in open spaces.
・Supports 8Ω low impedance and 100V/70V constant voltage multi-tap power, flexibly matching various PA systems.
・Adopts a reinforced iron back dome and high-density metal grille to effectively reduce resonance and distortion.
・316mm slim-bezel frameless flush-mount design, perfectly blending into the ceiling.
・Supports 10-50mm installation thickness and various cutout sizes, offering high installation flexibility.
Introduction to Speakers & Volume Controllers
This model belongs to the speakers and volume controllers category. To see how the system works, where it is used, and how to operate it, please refer to the series introduction.
Specifications
Compare with other models in the same series| Power Handling (8Ω) | 60W |
|---|---|
| Rated Impedance (100V) | 40W(250Ω)、20W(500Ω)、10W(1KΩ)、5W(2KΩ) |
| Sensitivity | 90 db/1m |
| Maximum SPL | 110 db/1m |
| Frequency Response | 85 Hz - 20K Hz |
| Speaker Driver | 6.5"x1 + 1"x1 |
| Housing Material | Iron |
| Dimensions | Speaker outer diameter 316mm, total height 197mm |
| Cutout Size | Diameter 270-280mm, Depth 176mm |
| Weight | 3.9KG |
Updated Date 2026-11-10
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According to actual shipment statistics in the past: the equipment most commonly purchased together for projects involving this model.

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Tabletop Delegate UnitDocuments
- catalog (datasheet)Traditional Chinese
- catalog (datasheet)BXB_CS-6521_SD_EN_Datasheet.pdfEnglish
Last Updated: 2026-11-10


