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Amina Backbox CV345


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Amina Backbox CV345
Control your space with a Backbox

Whichever speaker you choose, a Backbox can help give consistent audio performance and limit rearward sound transmission. This means more sound for you and less for everyone else. Whether cavity or solid wall, or even in the ceiling, we have a Backbox to suit. Application:
The BackboxCV345 is an easy to install, sound proofing backbox for the Amina Evolution Series speaker models. For use in plasterboard cavity walls (drywalls) and ceilings, the BackboxCV345 creates a sealed enclosure around the back of the speaker utilising a specially designed composite sound proofing layer. The BackboxCV345 is recommended for multispeaker installations where the cavity loading the backbox provides will ensure consistent sound quality from all speaker locations.

Installation:
The BackboxCV345 is designed to be retrofitted into the plasterboard wall or ceiling. Importantly it is fixed to the plasterboard only (not surrounding studwork) which reduces potential energy transfer to the wall/ceiling joists. Our detailed installation guide provides information on how to achieve the correct speaker face alignment for different types of plaster finishes and plasterboard thicknesses. Optional alignment shims are also available.

Sound Proofing Characteristic:
The graph below shows the sound pressure level attenuation of an Amina AIW Evolution Series speaker’s rearward output when installed in a BackboxCV345. Over the 150Hz – 5KHz range the rear firing airborne sound pressure is reduced on average by 26dB. It is recommended that additional sound proofing steps are taken if your speakers are installed in a wall or ceiling where bedrooms or other occupied rooms are directly adjacent. The BackboxCV345 cannot stop mechanically induced noise transmission inherent in certain building structures.

Technical Specifications:
Dimensions:500mm x 351mm x 71.5mm
Plasterboard cut-out required: 455mm x 350mm
Product weight: 2.8Kg (6.2lbs)
Speaker cable entry: Rubber grommet (can be replaced by M20 gland)
Speaker fixing: Use 4x self tapping flangehead screws (supplied)
Wall fixing: Use 8x self tapping drywall screws (supplied)
Minimum cavity depth: 75mm (3”)
Sound pressure reduction: -26dB on average over 150Hz - 5kHz range

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