andylouder Posted November 7, 2011 Share Posted November 7, 2011 Hello My House lamps are strand prelude 16/30.A client wishes to have a custom gobo ( brand logo ) made for a one off event.I have informed the client they will need to additionally purchase a gobo holder.The company quoting for making the gobo , have asked the client what size gobo holder the gobo will be used with , A , B , or M . I assume the client has neglected to tell them , that they require a custom gobo made and to purchase a suitable gobo holder. I presume the size of the gobo , and hence the size of the gobo holder , has a correlation to the size of the projected image required on the projection surface. They wish to project onto the dance floor , the lamp bar is about 12 to 15 foot above this , ( I am not in work at the moment so cant measure this till I go in tomorrow ). What should I advise ? thanks Link to comment Share on other sites More sharing options...
Shez Posted November 7, 2011 Share Posted November 7, 2011 As the BR wiki will helpfully tell you, Prelude 16/30s use GH06 gobo holders for B sized gobos. No need for a custom gobo holder - just get the gobo made in size B and use the standard holder. Link to comment Share on other sites More sharing options...
rossmck Posted November 7, 2011 Share Posted November 7, 2011 The prelude, if I recall correctly, needs a B size gobo and an appropriate gobo holder. Link to comment Share on other sites More sharing options...
andylouder Posted November 7, 2011 Author Share Posted November 7, 2011 Thanks for that. I did have a look at the wiki , but somehow missed , that it specified size B for the prelude 16/30. Ta for the quick reply. Link to comment Share on other sites More sharing options...
Ynot Posted November 7, 2011 Share Posted November 7, 2011 You can get a size A holder to fit Preludes BUT you need to take care which gobos you use in them as those with larger patterns can get 'cut off' at some focus points (ie the circular outer edge of the projection is limited). Link to comment Share on other sites More sharing options...
andy_s Posted November 8, 2011 Share Posted November 8, 2011 just to address the other question in your post relating to size, this is more a function of the beam angle of the lantern used to project it. so a prelude 16/30 will give a smaller image then a 25/50. (might have got the actual beam angles wrong, long time since I've used preludes.... but the principle is the important thing}. Link to comment Share on other sites More sharing options...
boatman Posted November 8, 2011 Share Posted November 8, 2011 Although the rating plate on a Prelude says 45°-0-90°, it cannot be vertical if fitted with a standard yoke. Many years ago, Strand did sell an extended yoke, but I doubt that it's available now. You may have to use a mirror to rotate the beam by 90° for floor projection. Link to comment Share on other sites More sharing options...
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