2 post on main, all posts on archive

I’ve looked thru the forum, but can’t find what i’m looking for. I wish to have

1. 2 posts only on my main template.
2. All titles listed in my Monthly Archive.

I’ve set “Show at most 2” only under options > Reading in the admin interface, but in that way my monthly archive also shows only 2 posts. Is there a way where i can show ALL post titles on my monthly archive & still let “Options > Reading” control the amount of posts on my main template.

Any help would be much appreciated.

Thanks.