DIGITAL DESIGNS NEW EROM SURROUND PROFILE

DIGITAL DESIGNS has developed a new surround profile to handle the ever-increasing need for cone excursion. This EXTENDED RANGE OF MOTION (EROM) profile allows for increased excursion while keeping the effective piston diameter high and wasted moving mass low. EROM surrounds combine high sensitivity with extended low frequency capability.

Traditional wideboy, inner tube type surrounds allowed for some additional throw but at the expense of both effective radiating diameter and sensitivity. A 15” speaker with a wide surround uses a 12” cone body; a 12” uses a 10” cone, and so on and so on. These smaller cones reduce the area of the speaker that pounds out the SPL. What sense does it make to send out a 12” speaker to do a 15” speaker job? EROM surrounds allow the use of 15” cones in 15” speakers, 12”s in 12”s and so on and so on. EROM surrounds give long throw AND large piston diameter.

Those same inner tube surrounds have much more inherent moving mass due to their bulky, inefficient profiles. This wide inner tube profile requires extra surround thickness to keep them from flapping around under power. The added moving mass requires more amp power to overcome all the bulk. The EROM surround profile takes advantage of height to increase surround travel. Surround height is the major component to excursion, not width. The reduced surface area of the EROM profile reduces the required moving mass. The EROM design is highly efficient in its excursion/mass ratio.

EROM surrounds are a true breakthrough in the design of highly efficient long-throw subwoofers. Digital Designs is always at the forefront in the development of technology to push subwoofer performance to new levels. The EROM surrounds we developed are being copied around the world, some even use our EROM term in their advertising. So while others are copying what we do and how we say it, we'll be breaking ground on new stuff. Stay tuned.

DIGITAL DESIGNS NEW EROM SURROUND PROFILE

DIGITAL DESIGNS has developed a new surround profile to handle the ever-increasing need for cone excursion. This EXTENDED RANGE OF MOTION (EROM) profile allows for increased excursion while keeping the effective piston diameter high and wasted moving mass low. EROM surrounds combine high sensitivity with extended low frequency capability.

Traditional wideboy, inner tube type surrounds allowed for some additional throw but at the expense of both effective radiating diameter and sensitivity. A 15” speaker with a wide surround uses a 12” cone body; a 12” uses a 10” cone, and so on and so on. These smaller cones reduce the area of the speaker that pounds out the SPL. What sense does it make to send out a 12” speaker to do a 15” speaker job? EROM surrounds allow the use of 15” cones in 15” speakers, 12”s in 12”s and so on and so on. EROM surrounds give long throw AND large piston diameter.
Those same inner tube surrounds have much more inherent moving mass due to their bulky, inefficient profiles. This wide inner tube profile requires extra surround thickness to keep them from flapping around under power. The added moving mass requires more amp power to overcome all the bulk. The EROM surround profile takes advantage of height to increase surround travel. Surround height is the major component to excursion, not width. The reduced surface area of the EROM profile reduces the required moving mass. The EROM design is highly efficient in its excursion/mass ratio.
EROM surrounds are a true breakthrough in the design of highly efficient long-throw subwoofers. Digital Designs is always at the forefront in the development of technology to push subwoofer performance to new levels. The EROM surrounds we developed are being copied around the world, some even use our EROM term in their advertising. So while others are copying what we do and how we say it, we'll be breaking ground on new stuff. Stay tuned.