[opnly bafld]

I'm not clear if you have the 'M's or 'C's but if 'M's with the side firing woofer,

He has RM30 Series II:

http://www.stereophile.com/content/vmps-ribbons

http://app.audiogon.com/listings/planars-vmps-rm30-series-ii-new-ribbon-speakers-2012-09-24-speakers-94803-el-sobrante-ca

[Brax]

Do your speakers have the 6-1/2" mega woofers? The standard woofer has the blunt wooden phase plug while the mega woofers have the aluminum bullet shaped one.

[mjmessina]

Yes, they have the mega woofers.

These are the most recent RM30s.  They are most likely the last pair of RM30s ever made.

[mjmessina]

As an update, I did a few things to improve the bass response over the last month.
One I re-stuffed my RM30s, this seemed to help a little. Also repositioned them and set them a little wider.

Now for the big improvement.  I purchased two of these subwoofer kits:
            http://www.parts-express.com/dayton-audio-15-ultimax-subwoofer-and-cabinet-package--300-7097

All I have to say is HOLY S**T!  I thought my tower IIs had some deep tight bass, these CRUSH them.
I know Brian used Dayton drivers in the pass, the Ultimax is a step up. Very nicely built.
Would recommend them.