They are the same. I think they would be more clear to be said like this: 1) 他总是很大声地说话。2) 他总是说话说得很大声。 Hope can help.

Sentence 1 and 2 has the same meaning.But we actually speak as the first one.Following are the differce between them: 1.得 v.+得+adj. eg.笑得很开心 扫得很干净 走得快 说得很大声 2.地（in fact ,it has two pronunciation ）adj.+地+v. eg. 开心地笑 仔细地看 伤心地说

Actually, many Chinese don't know when to use “得”. Because, in most circumstance, “的”、“得”、“地” have the same pronunciation. It's common to see people send a Weibo(Chinese Facebook) using “的”, where they should use “得”. Calin's answer is good.

The second should better. And you should add something that he said at the end of the first sentence