SDL 400 M-BT

WHD SDL 400 M-BT - ceiling speaker with Bluetooth receiver and amplifier

WHD SDL 400 M-BT is a master speaker for invisible installation behind a stretch ceiling, equipped with a built-in amplifier and Bluetooth receiver BTR 405. Music flows directly from your smartphone or tablet, while the speaker remains completely hidden - the flat design with a height of only 58mm disappears behind the ceiling foil, not disturbing the interior appearance. The two-way system with a 4" woofer and tweeter, bass-reflex enclosure, and crossover specially tuned for operation behind the stretch ceiling ensures clear and natural sound despite the foil. The wide coverage makes the music fill the room well.

The 4x5W amplifier powers the master speaker and up to three passive SDL 400-S speakers, allowing the system to be expanded to four points in one room or in adjacent zones. The BTR 405 receiver connects to devices within a range of up to 10m, remembers up to 8 paired devices, and can be configured in the free BTR Config app for Android devices. Installation is simple: the speaker with the receiver on a common mounting plate is screwed to the ceiling before stretching the ceiling. The SDL 400 M-BT is suitable for living rooms, kitchens, bathrooms, restaurants, hotels, and shops.

Functionality

• Invisible installation behind a stretch ceiling

• Built-in Bluetooth receiver BTR 405 - music directly from your smartphone or tablet

• Memory for up to 8 paired devices

• Receiver configuration in the free BTR Config app (Android)

• Built-in amplifier 4x5W

• Ability to connect up to 3 passive SDL 400-S speakers

• Crossover and bass-reflex enclosure tuned for operation behind the ceiling foil

• Speaker and receiver on a common mounting plate

• Power supply from 230V mains

Features

• Type: two-way, bass-reflex

• Drivers: 4" woofer (PM 103), tweeter (PM 38)

• Rated/music power: 6W/8W

• Impedance: 8Ω

• Sensitivity (1W/1m): 81dB

• Frequency response (-3dB): 70Hz-22kHz

• Frequency response (-10dB): 55Hz-28kHz

• Dispersion angle horizontally (1/2/4/8kHz, -6dB): 180/180/160/90°

• Dispersion angle vertically (1/2/4/8kHz, -6dB): 180/55/160/90°

• Receiver and amplifier: BTR 405

• Output power of the amplifier: 4x5W

• Speaker impedance: 4-8Ω each (2x 4Ω or 4x 8Ω)

• Bluetooth: 3.0 EDR, A2DP profile

• Bluetooth range: up to 10m

• Power supply: 110-240V AC

• Power consumption: 36W

• Number of connectable SDL 400-S speakers: up to 3 pcs.

• Operating temperature of the receiver: 0°C to +45°C

• Receiver dimensions: 62x28x140mm

• Receiver weight: 0.18kg

• Speaker dimensions with mounting plate: 520x430x58mm

• Speaker weight: 1.8kg

• Color: silver

• Distance between the speaker and the ceiling foil: min. 2mm

• Application: for indoor use only

• Included: SDL 400 M-BT speaker with BTR 405 receiver on a mounting plate, 4 SPAX screws 4x45mm with a round head, 4 PA 6 plugs

WHD SDL 400 M-BT is a way to enjoy music in a room without visible speakers - just use your smartphone. The ready-to-use set with a built-in amplifier and Bluetooth receiver can be expanded at any time with additional SDL 400-S speakers.