Have you not been able to find those codes on that page, or have you found them and they just don't work. Under the Receiver link, I see:

49 Bass Boost

This is for device 12. If you go to the link "How to use these codes with a One For All or Radio Shack remote" and look in the first table, you'll see that device 12 corresponds to OFA setup code 0158/0159. In the second table, you'll see that code 49 correpsonds to advanced code 046. So, 046 *should* control bass boost on your receiver if you're using device code 0158/0159 (one or both may work).

I also see all the other functions for menu navigation (also setup code 0158/0159) and EQ settings (setup code 0010). Have you tried these?

One more thing, you realize that these setup codes (0159, 0010, etc.) may not be included with your remote, correct? They did not come factory installed in my URC-8910, but your remote may be different.

And yes, floyd_1977 is derived from Pink Floyd.