I went through the lamp search thing recently too. I even looked at getting a replacement "bulb" that is inside the housing and doing some DIY work to get it together. Cost for the bulb: $85 for my model, plus $10 for fireplace cement vs. $250 for a new lamp. Long story short, I decided to buy the full new OEM bulb for $250. I didn't feel comfortable using a drill press on my existing lamp housing and in hopes that I didn't trash it.

I got my bulb from http://www.advancedlamps.com/index.php

Here is the site where you can contact a user about the DIY method and getting a bulb for inside the lamp housing...
http://www.diyaudio.com/forums/showthrea...25&pagenumber=1

Farewell - June 4, 2020