the new blub for cold lights (single tube) is called the V54 from Aristo. http://www.aristogrid.com It has a better response for the VC papers. It is more green in its coloration. You will still need to use multicontrast filters either in the filter drawer or under the lens. The cost for this upgrade is about $100 US. Should be a snap to change out. A 40 yellow should help but this will dramatically slow down the light response while printing as it will filter the blue light.
</span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (tschmid @ May 12 2003, 12:17 AM)</td></tr><tr><td id='QUOTE'> Brian,
what filters do you use? Do you use the corresponding filter for printing a grade 2 or do you print it without filtration ? </td></tr></table><span class='postcolor'>
I use Ilford Filters.
I have overlooked that you are talking about a cold light head. Ad Don already said, they do not have a continuous spectrum and are thus not suited for VC printing. Your head does not have a color temperature of 3400°K. This is just what your color meter might say based on two or three spectral readings. Adding another filter might not solve the problem. At least not for all paper grades.