Need answer to a puzzle in Metroid Prime 2

[SpaceKnight of Chaos]

I was just wondering if anyone could tell me how to open the 'sonic lock door' in the Central Dynamo section of the Sanctuary in Metroid Prime 2: Echoes? This is the door in the chamber where you need to reach the upper levels, via disabling the gyroscopic rings, in order to face Dark Samus 2 and obtain the Echo Visor. It has three 'sonic key posts' you're supposed to shoot in the right sequence after shooting the target on the door to get the "melody of hits" (aka the sound sequence explaining what posts you need to hit), but I can't get it to make any sound. Do I need to use a specific beam or something?

[Not-Going-to-Tell]

Probably need the annihilator beam, which you get from beating the Sanctuary guardian, Quadraxis.

[SpaceKnight of Chaos]

That sounds like the most likely answer, as none of the other beams worked (odd, because most of those doors just need power beam shots), so thank you.

I don't suppose anyone could tell me where to find the last History - Golden Age lore entry? I have Origins, Paradise, Light of Aether, The Stellar Object and Saving Aether, but I don't know where the very last entry for that section of History is.

::Edit:: just wanted to confirm that, yes, the key is using the Annihilator Beam. Which is a lot of work to go through for a lousy Power Bomb expansion.