I'm not doing a Pencil for the EL, but of the existing enclosures, the CHP cabinet will be the most flexible.
Ok, May I ask why not one specifically for the EL70 since they are sister products to the MA drivers?
Also, how would it change the sound if the driver was placed closer to the top of the cabinet? Is there a reason that the driver is placed lower?
......how severely that'll mass load the diaphram though I'm not sure.