The Arrilite 2000 is a bit smaller than a 2k fresnel, but is still a fairly bulky light - the light fills up a whole milk crate on its own (though it does fit entirely within, so you can still stack another milk crate on top).
One thing you'll find about open-face lights is that they do have higher light output compared to fresnels. About 50% of the light from the globe inside a fresnel fixture hits the side walls and is wasted, while open-face lights throw almost all the light forward. The trade off is that fresnels are easy to shape and control, while an open face light is simply throwing light in all directions in front of it. If you're planning to throw all that light into a sheet of diffusion, then an open-face light sounds ideal for you.
If you're happy with the amount of light you're getting from a 2k fresnel, then perhaps you only need a 1k open face, which would be much more compact.
There are 2 general types open-face lights. One type has a round reflector and offers some rough focusing ability. The Arrilite, Mickey/Mighty Mole, Photon Beam, or Lowel DP (which uses interchangeable reflectors instead of moving the globe within the fixture) fall into this category. The Arrilite+ 750 might be of interest if it's within your budget, since its special reflector provides a much wider range of focusing and reflects more efficiently than the dull/dimpled reflectors of other fixtures, with an output equal to other 1k open-face lights at a lower wattage.
Then there are "broad" lights, which are even more compact but offer no built-in control: Arri mini flood, Mole nook light, Photon Beard Minibroad, or the Lowel Tota, which is about as small as this type of light can get. These are also usually the most affordable, since they are very simple to build.
Edited by Daniel Klockenkemper, 01 October 2017 - 06:06 PM.