S&L Posted December 15, 2012 Share Posted December 15, 2012 Lighting is a little bit of a new foray for me but I have acquired 2 sets of 4 par cans to work with in small halls, bars and the like with bands I sound engineer for. the cans are par 56 short with conventional lamps - from memory they are skytec and in 'as new' condition. I'm changing a few of the filters for a show next week and was just going to pop into cpc and pick up what they had in stock. however, looking through their site and catalogue it appears there are two types of filters. standard and high temperature. now the web site and manufacturers site is vague as all hell as to what 'high temperature' means - but then I'm new at lighting so what do I know?! are standard filters OK to use for short par 56 cans containing GE 300w 240v par lamps? and if so, what are the high temperature filters for? Link to comment Share on other sites More sharing options...
the kid Posted December 15, 2012 Share Posted December 15, 2012 "LEE High Temperature (HT) lighting filter utilises both a different base material and surface coating to withstand hot light sources such as focussed spots or large fresnels. HT products have the same colour properties as standard gels but are less likely to hole or burn through in extreme conditions. All standard colours that are high heat absorbers are available in the HT range, as well as a selection of other popular colours within the colour effect range. " (not from the lee site as I cant find anything on there about HT) BUT that explains it all, a deep colour, 071, 181, 026, etc will absorb more light and thus get hotter and melt/ burn so. If you use HT that helps stop it happening / prolongs the life of the colour. Link to comment Share on other sites More sharing options...
S&L Posted December 15, 2012 Author Share Posted December 15, 2012 absolutely clear as mud. has anyone hands on experience of standard filters melting on short par 56? Link to comment Share on other sites More sharing options...
Brian Posted December 15, 2012 Share Posted December 15, 2012 has anyone hands on experience of standard filters melting on short par 56?Yes. But that was on deeper colours with the units used as uplighters. Buy some standard filters this time and see how long they last in YOUR application with YOUR colour choice. If they don't last long enough for you; buy some HT filters next time. Remember, filters are consumables. Link to comment Share on other sites More sharing options...
S&L Posted December 15, 2012 Author Share Posted December 15, 2012 thanks Brian - sage advice as ever. as long as I'm not burning down bars, I'm happy to experiment! Link to comment Share on other sites More sharing options...
Brian Posted December 15, 2012 Share Posted December 15, 2012 ...as long as I'm not burning down bars...All decent filters are made from a non-flammable base material. Link to comment Share on other sites More sharing options...
alistermorton Posted December 15, 2012 Share Posted December 15, 2012 Lighting is a little bit of a new foray for me but I have acquired 2 sets of 4 par cans to work with in small halls, bars and the like with bands I sound engineer for. the cans are par 56 short with conventional lamps - from memory they are skytec and in 'as new' condition. I'm changing a few of the filters for a show next week and was just going to pop into cpc and pick up what they had in stock. however, looking through their site and catalogue it appears there are two types of filters. standard and high temperature. now the web site and manufacturers site is vague as all hell as to what 'high temperature' means - but then I'm new at lighting so what do I know?! are standard filters OK to use for short par 56 cans containing GE 300w 240v par lamps? and if so, what are the high temperature filters for? Friend of mine lit his gig with my mixture of short and long PAR56s and the colours in them were reasonably deep - not as deep as L120, but not exactly pale straws either, and we had no issues with the gels cooking. Link to comment Share on other sites More sharing options...
S&L Posted December 15, 2012 Author Share Posted December 15, 2012 Thanks guys - I feel re-assured! Link to comment Share on other sites More sharing options...
Nicktaylor Posted December 18, 2012 Share Posted December 18, 2012 Unless using them as uplighters I doubt you will have a problem with normal Gel with 300w lamps. Even with short nose unite the distance from lamp front to gel runner is more than say a Coda. As other have said of course fully sturated gels will burn out more quickly if they are going to at all! Link to comment Share on other sites More sharing options...
S&L Posted December 23, 2012 Author Share Posted December 23, 2012 just a post test note to say we ran the lights for a 2 hour plus show and the standard filters were absolutely fine. I have another colour issue but I will post that separately! Link to comment Share on other sites More sharing options...
Don Allen Posted December 23, 2012 Share Posted December 23, 2012 Going back to the days when PAR cans were being invented, the first version was a short nose PAR64 and all of the gels burnt out. They had to lengthen the nose and put holes in for air cooling of the gels. See Concert Lighting James L Moody 3rd edition page 191 history of PAR 64 where it describes Chip Monck's development work where he added six inches to the fron of the PAR64 to stop it burning out gels. Link to comment Share on other sites More sharing options...
S&L Posted December 23, 2012 Author Share Posted December 23, 2012 thanks Don, stuff like this with not having a formal education in sound and lighting I have managed to miss and it helps fill in a picture of knowledge - the book has been added to my wish list! Link to comment Share on other sites More sharing options...
Don Allen Posted December 24, 2012 Share Posted December 24, 2012 In Australia, we can get our council library to get any books in for us to loan, they may even buy it to expand their technical theatre books. Can you do this in the UK? library catalogue library locations Link to comment Share on other sites More sharing options...
Nicktaylor Posted December 24, 2012 Share Posted December 24, 2012 thanks Don, stuff like this with not having a formal education in sound and lighting I have managed to miss and it helps fill in a picture of knowledge - the book has been added to my wish list!I doubt if the majority of posters here have a formal training in sound and lighting. Of the posts I see a third maybe are professional theatre workers, a third students or recently qualified and a third, people like me involved in the amateur world. All, regardless have got where they are with a fair bit of experimentation! Keep notes is my tip so that when you want the same effect a year or so later you know what went right and what didn't! Link to comment Share on other sites More sharing options...
paulears Posted December 24, 2012 Share Posted December 24, 2012 Most libraries in the the UK have book budgets they have trouble spending. The demand for books has fallen off, so most are very receptive for requests, because they are guessing at what people want - so having a request for a specific title is appreciated, and is evidence that books are still in demand. All it takes is a request. In Suffolk where I live, in the seventies almost every edition of Francis Reid's Lighting books were in every library - now Suffolk has 3 in total, and 2 are in the county store! Link to comment Share on other sites More sharing options...
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