Nope, sorry nothing better than the BVT for now. 500hr, not the most efficient of lamps but unless if even still available and you want to go half output for 6x the lamp life the GE #21950 620PS40P would be a bad choice. 1Kw 8" Fresnels are what they are. Short of doing a 5Kw Studio
Fresnel modified for 1and 2Kw lamps that take the same size lamp, is nothing else on the market with the same lamp size which would last longer or be more efficient - this short of major modification to what you have. Even there, unless you can find some GE#41734 Q1000T20BP lamps, not much on the market you can put into the
fixture at this
point. Still give it a few months more... there are new
Fresnel lamps in the works, perhaps they can also at some
point become useful to such equipment. If not, the 8"
Fresnel is a dinosaur of the industry I’m sorry to say. Totally useful for
stage design but not so much of a lamp that sells much thus is on the list for further upgrade beyond what was done almost 40 years ago. Dead lamp and
fixture type.
Given this, my recommendation if long term planning of the theater is involved would be to sell them off and buy 6" Fresnels. The upgraded lamp for them is coming or at least has been designed and designated. More per square
foot sure but at least still an active
fixture type. The 8"
Fresnel I’m sorry is not getting anywhere and in time will become discontinued by way of the lamp companies making such lamps still.
Here is a thought - anyone still using them should contact Eiko brand dirctly. They are new and finding their nitche. There might just be some amount of sway and interest in upgrading the 8"
Fresnel lamp to something more efficient. Most other brands one will find this lamp to be on TBA gone from their
system list.