The LCH70T is one of the latest products from ATEÏS INTERNATIONAL and especially designed for the voiceevacuation market. The LCH70T is a typical exponential horn that is designed to be used in placed with restricted ceiling heights and where far throws are requested. The LCH70T is made of reinforced fibre/epoxy and equipped with a strong and powerful 2” compression driver, capable of producing a fabulous 117 dB. The shape and structure allow for use in highly demanding environments like traffic tunnels and car parks. Also train tubes that need to be addressed during voice-evacuations are typical examples where the LCH70T would fit perfectly. Due to its dimensions, its throw can reach from 40 up to 70 m, reducing amplifiers and delay lines when compared to conventional distributed sound systems for tunnels. This will bring the total costs down and due to a lower number of horns, it will bring the Q-factor up and so the intelligibility of the overall evacuation system.

• Traffic tunnels.
• Industrial purpose.
• Long throw.
• High SPL.
• High intelligibility.
• Special purpose design.
• Durable.

100/70/50 Volt line transformer maximum power70 Watt rms Dual ceramic connector blocks with M20 PG12 glands

Electrical performance SPL_MAX 132 dBA @ 70 Watt

Frequency range 300 Hz – 8 kHz

Horizonal opening angle @ 1 kHz 40 degrees

Vertical opening angle @ 1 kHz 15 degrees

Sensitivity 1 W / 1 M

112 dB @ 500 Hz

120 dB @ 1 kHz

116 dB @ 2 KHz

108 dB @ 8 KHz

Q-factor @ 1 kHz

250 Hz = 7.3

500 Hz = 14

1 kHz = 30.5

2 kHz = 38

4 kHz = 38

8 kHz = 38

External high-pass filter requirements 250 Hz, 2nd order (filter not included)

M e c h a n i c a l s p e c i f i c a t i o n s

Material Glass fibre reinforced epoxy flame-retardant polyester

IP rating IP56

Color RAL7004 (dark-grey)

Dimensions Length: 85 cm - Width: 75 cm (flare side) - Height: 20 cm

Weight 23 kg approximately

Mounting type 8 x M12 stainless steel, 316

Spay water protection on mouth Stainless steel mesh grill