Yes equal amounts of cyan Magenta and yellow create nuetral density. the issue would be then if the OP wants to split print and use maximum magenta for the higher contrast.
If so screwing around with all the dials would be an issue also if the top of the enlarger is not braced with wall mounts.
Quote Originally Posted by martinjames View Post
OP, since you have the color head don't forget that you can use the C/M/Y filters in combination to alter both the contrast and lower the light level. You can increase the Cyan, adjust the mix of M+Y, or both together. Here's a thread from another site that addresses the issue:
http://www.largeformatphotography.in...p/t-76355.html