ACOUSTIC ROLLER BANNER G-SORBER

Acoustic roll banner

The G-SORBER system is the logical extension of our portfolio for the variable modification of room acoustics.

The reverberation time of a room can be adapted to its multifunctional use. Whether chamber music, choir, electro beats or meetings and conferences - with our G-SORBER system, every use can be optimally adjusted acoustically and results in a perfect sound experience.

• Sound absorber class: A (depending on the installation situation).
• Double-layered curtain of a specially developed wide fabric made of permanently flame-retardant Trevira CS fiber with particularly high absorption values.
• Defined ply spacing remains constant over the entire stroke.
• Curtain:
  • Seamless design up to 4.40 m wide and 10.00 m high;
  • Standard color: Raw white
  • Special colors: on request,
  • Special designs: on request. e.g. metallized on one side as sun protection (up to 2.45 m wide), single layer, printable.

• Achieves fire protection class B1 in accordance with DIN 4102-1.
• Standard color protective box DB 703, standard color weighting profile RAL 9005 or RAL 9016, special colors on request.
• Weighting profile retracts completely into protective box.
• Suitable for wall mounting and ceiling installation.
• Protective box can be installed in advance as a placeholder in the building shell during the construction process. Enables smooth installation of the system afterwards.
• Easy maintenance possible from below.
• Simple installation thanks to plug-in cabling.
• Reproducible group movements including intermediate positions possible.

G-SORBER enables a seamless design of widths up to 4.40 m and curtain heights up to 10.00 m.

The system is equipped with a double-layer curtain made of a highly absorbent wide fabric and, depending on the installation situation, achieves the highest sound absorption class A.

In addition to ceiling installation, installation on wall brackets is also possible, as is installation in suspended ceilings.

The protective box can be installed in advance as a placeholder in the building shell during the construction process. This allows the system to be installed smoothly afterwards.

The weighting profiles retract completely into the protective box.

Special colors for the textile and special paint finishes for the housing are available on request.

Achieves fire protection class B1 in accordance with DIN 4102-1.

Measurement of sound absorption in reverberation chambers

Sound absorption

• Measurement in the reverberation room of the Center for Building Physics (ZFB) at the Stuttgart University of Applied Sciences.
• Determination of absorption coefficient α according to DIN EN ISO 354.
• Measurement in four different test setups:
  • Variable wall distance of the rear fabric layer
  • lateral enclosure

G-SORBER: Elbphilharmonie special design:

Measurement of sound absorption in reverberation chambers

Structure A

• Wall distance: 100 mm.
• Distance between the layers: 150 mm.
• Enclosure: no.

Weighted sound absorption coefficient:

αw = 0.80 according to ISO 11654.

Sound absorber class: B.

Assessment according to ASTM 423:

NRC = 0.85, SAA = 0.82.

Structure B

• Wall distance: 200 mm.
• Distance between layers: 150 mm.
• Enclosure: no.

Weighted sound absorption coefficient: αw = 0.85 according to ISO 11654.

Sound absorber class: B.

Rating according to ASTM 423: NRC = 0.90, SAA = 0.88.

Structure C

• Wall distance: 100 mm.
• Distance between layers: 150 mm.
• Enclosure: yes.

Weighted sound absorption coefficient: αw = 0.90 according to ISO 11654.

Sound absorber class: A.

Rating according to ASTM 423: NRC = 0.85, SAA = 0.83.

Structure D

• Wall distance: 200 mm.
• Distance between the layers: 150 mm.
• Enclosure: yes.

Weighted sound absorption coefficient:

αw = 0.90 according to ISO 11654.

Sound absorber class: A.

Assessment according to ASTM 423:

NRC = 0.85, SAA = 0.84.

Structure E

• Single layer version.
• Wall distance: 100 mm.
• Enclosure: no.

Weighted sound absorption coefficient: αw = 0.60 according to ISO 11654.

Sound absorber class: C.

Installation and fastening

Two-layer version

Single-layer version

Possible controls

We offer three standard control systems to meet the diverse customer requirements:

• Integration into on-site building control systems.
• Simple travel commands: UP / STOP / DOWN.
• Pre-programming of user-specific roll-off heights. We make variable acoustics possible at the touch of a button.

Installation

Important notes:

• We recommend having the initial installation carried out by Gerriets GmbH specialists.
• All installation work between the power supply, switch cabinet, systems and control points (cable routing, clamping work and plug assignment) is carried out by a qualified electrician (in accordance with DGUV regulation 3 or DIN VDE 0105-100).
• To enable subsequent maintenance and/or modification work, it is essential to ensure that the systems are installed so that they are accessible and can be inspected. Please contact us for details.

Control unit

• For control via building technology using potential-free contacts.
• Consisting of: Control cabinet for power electronics.
• Operation via building control system:
  • UP / DOWN;
  • EMERGENCY STOP.
• Feedback of end positions via potential-free contacts.
• Asynchronous group movements possible depending on customer requirements and building technology.

Standard control

Control for preselecting individual systems (group preselection).

• Consisting of:
  • Control cabinet for power electronics;
  • Control panel with rotary switches for selecting the systems.
• Operation:
  • Rotary switch for selecting the systems;
  • UP / DOWN for moving the selected drives;
  • EMERGENCY STOP;
  • End position status is indicated by LEDs.
• Asynchronous group movements possible

Pre-programmed control

Control unit for pre-programming six user-specific unwind heights as standard, depending on the application.

• Consisting of:
  • Control cabinet for power electronics;
  • Touch panel (9.0" TFT widescreen display; 800 x 480 pixel resolution; dimmable LED backlighting).
• Operation:
  • Pre-programming of user-specific unwinding heights via teach-in;
  • simple retrieval of customer-specific presets.
• Synchronous and asynchronous group movements possible.

Examples of pre-programmed user-specific rolling heights.

6 settings can be pre-programmed as standard. Further options on request.