Bosch CCSD-DL Discussion device with long microphone, Discussion Device for the CCS 1000 D Digital Discussion System, supplied with a long‑stem fixed microphone, configurable as a participant device or a chairperson device, Cardioid Microphone polar pattern, Built-in loudspeaker with volume control, Headphones socket, Request‑to‑speak indication.

Discussion Device

Bosch CCSD-DL Discussion device with long microphone,

Possible-to-Speak Indication

A white possible-to-speak indicator above the microphone button indicates when to activate a microphone.

Built‑in Volume control for headphones

For maximum comfort, the volume of the headphones can be adjusted on the side of the discussion device using a rotary thumbwheel.

Request‑to‑Speak Indication

A green request‑to‑speak indicator above the microphone button and in the head of the microphone indicate when a request‑to‑speak has been added to the waiting list. The indicators flash green when the request‑to‑speak is first in the waiting list.

Microphone with Flexible Stem

The fixed microphone with a flexible stem can be easily adjusted to suit the user.

Built-in Loudspeaker with Volume Control

The volume of the Loudspeaker of all Discussion Devices is centrally controlled from the Control Unit to ensure optimized audibility.

Headphones socket

The built‑in stereo headphone socket enables the speaker to be heard, even when there is excessive background noise.

Controls and Indicators

Microphone button, Color-coded LED indicator above microphone button for showing the following states: microphone on, request‑to‑speak, and possible‑to‑speak, Light‑ring indicator in head of microphone, Rotary thumbwheel 





Power consumption

1.3 W


Frequency response

30 Hz to 20 kHz (System electrical)



<0.5 %



>93 dBA


Sampling rate

44.1 kHz


Headphones load impedance

> 32 ohms < 1k ohm


Loudspeaker max. peak output power

4 W




Loudspeaker nominal output

72 dB SPL


Participants loudspeaker frequency response

200 Hz to 16 kHz (acoustical)


Microphone polar pattern



Participants microphone frequency response

125 Hz to 15 kHz


Microphone nominal input

85 dB SPL


Dimensions device without microphone (H x W x D)

64 x 203 x 146 mm

(2.5 x 8.0 x 5.7 in)

Height with microphone in horizontal position

130 mm (5.1 in)

Length of microphone from mounting surface

CCSDDL: 480 mm (18.9 in)


Approx. 1 kg (2.2 lb)


Tabletop (portable or fixed)

Material (top)

Plastic ABS+PC

Material (base)

Metal ZnAl4

Color (top)

Traffic black (RAL 9017) matt- gloss

Color (base)

Pearl light grey (RAL 9022) matt- gloss


Operating temperature

0 ºC to +35 ºC

(+32 ºF to +95 ºF)

Storage and transport temperature

-40 ºC to +70 ºC

(-40 ºF to +158 ºF)

Relative humidity

5% to 98% non-condensing

Air pressure

600 to 1100 hPa

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