 
					
				Rated power: 40W or 50W
6.5" or 8" PP woofer, ¾" Aluminum tweeter
Ultra thin design (70mm)
Upgrade your audio experience with our sleek, high-performance 2-way coaxial in-ceiling speakers.
Available in two models: LS-643 (6.5", 40W) and LS-853 (8", 50W)
——The speakers are engineered to deliver crystal-clear sound while maintaining an ultra-thin, space-saving design. With a minimal thickness of just 70mm, they are perfect for applications where space is limited, but high-quality audio is a must.

These in-ceiling speakers combine exceptional sound quality with ease of installation, making them an ideal choice for any setting where a clean, professional audio solution is needed. Whether for home theaters or commercial spaces, the LS-643 and LS-853 deliver premium performance with a subtle, modern design.
| Model | LS-643 | LS-853 | |
| Rated power | 40W | 50W | |
| Power taps (100V) | 5/10/20/40W | 6.25/12.5/25/50W | |
| Power taps (70V) | 2.5/5/10/20W | 3.125/6.25/12.5/25W | |
| Line input | 70V/100V/8Ω | ||
| Sensitivity | 86±3dB | 81±3dB | |
| Frequency response | 80Hz-20kHz | 75Hz-20kHz | |
| Woofer speaker driver | 6.5" PP cone | 8" PP cone | |
| Tweeter speaker driver | ¾" Aluminum dome | ¾" Aluminum dome | |
| Grille materal | Iron | ||
| Connector type | 2 Pin press terminal | ||
| Product size | Φ230*70mm | Φ275*80mm | |
| Mounting hole size | Φ210mm | Φ245mm | |
| Net weight | - | - | |

Professional Background Music System Designer and Manufacturer
Tel: +86 20 3939 0663
E-mail: sales@lyintl.com