Speaker choice for JTM45/2x12

[Elad E]

hey all,
this is my first post here, I've been lurking here for quite some time and only recently joined as I finally purchased a JTM 45 kit from Valvestorm (whom I can't say enough good words about).

I'm planning on building my own 2x12 cab, approximately the same internal volume as a Marshall 1936 and most probably a closed back.
I'm opting for 16 Ohms (total, in series) and I'm leaning toward two G12Ms (Chinese or Heritage).
that being said I'm concerned whether the 20-25watt rated speakers will survive the JTM45.
should I be looking at speakers with a higher power rating for the JTM45 or can the garden variety of 20-30 watt Greenbacks (or G12H30s) be able to cope with a cranked JTM 45?

Thanks in advance.

[neikeel]

The Ms have the advantage of being able to be pushed harder by the amp for a given volume but will have less clean headroom.

Even a good 45 puts out a lot less than 40w.

[coldengray]

Go with Scumbacks - can't say enough good things about them. An H75 and Scumnico will do you nicely.

[908ssp]

I'd do Scumbacks as well. The Celestions reissues take for ever to break in and have too much stridency. The Chinese versions are just too bright. The Scumbacks are a closer match to the vintage speakers. The Sumnicos had the Beano tone in my opinion and I have original Beano speakers to compare them to.