 
					
				Rated power: 20W/30W/60W 
Line input: 70V/100V/8Ω 
Woofer speaker driver: 4" or 6½" or 8" + silk tweeter
Bezel-less magnetic grille
Optimize your public address and high-quality background music systems with these ceiling-mounted speakers.
Featuring a feather-edged magnetic iron grille and a high-strength fireproof iron rear cover, these speakers are built for durability and safety.

They offer versatile 70V/100V and 8Ω inputs with adjustable power taps:
L-557THS: 2.5/5/10/20W (4"+0.75")
L-657THS: 3.75/7.5/15/30W (6.5"+1")
L-857THS: 7.5/15/30/60W (8"+1")
Choose from 4", 6.5", and 8" PP cone woofers, paired with a 1" silk coaxial dome tweeter for exceptional sound.

Ideal for indoor environments, these CE-certified speakers deliver superb audio performance.
| Model | L-457THS | L-657THS | L-857THS | 
| Rated power | 20W(100V) 20W(8Ω) | 30W(100V) 30W(8Ω) | 60W(100V) 80W(8Ω) | 
| Power taps | 2.5/5/10/20W 8Ω: 20W | 3.8/7.5/15/30W 8Ω: 30W | 7.5/15/30/60W 8Ω: 80W | 
| Line input | 70V/100V/8Ω | ||
| Sensitivity (1m,1W) | 88±3dB | 88±3dB | 94±3dB | 
| Frequency response | 200-18KHz | 130-17KHz | 55-20KHz | 
| Woofer speaker driver | 4" PCK+PE | 6.5" Paper | 8" Paper | 
| Tweeter speaker driver | 3/4" silk | 1" silk | 1" silk | 
| Product dimension (mm) | Φ204x165 | Φ267x162 | Φ320x245 | 
| Hole for mounting (mm) | Φ180 | Φ240 | Φ292 | 
| Frame material | ABS | ||
| Back cover material | Iron | ||
| Grille material | Powder coated Iron mesh | ||
| Color | White (RAL9016) | ||
| Product net weight (Kg) | 2.2 | 3.3 | 5.3 | 
| Gross weight | 18Kg/4pcs | 18.65Kg/4pcs | 15.52Kg/2pcs | 
| Packing dimension (cm) | 58x55x28 | 65x34x53.5 | 80x41x38 | 

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