Scan-Speak 15W/2904 MTM?

[clean4x4]

Hi all, I recently got some Scan Speak
15W/8531K03's, and some R2904 tweets for a great price.

I would like to make some small enclosures for them, and use them as a second system, or in a small room.

I am looking for advice on box size, and porting specs. I am a novice at speaker building, so I could use the help.

One concern is that the tweeter is quite a bit more efficient than the midbass drivers. A higher sens midbass driver might be a better choice, but I already have the 15W's. So I thought a MTM design might help bring up the eff. a little.

I also have a pair of 18W/4531G01's, but I think I would need (x4) 8 ohm units for an MTM config. (willing to trade if you have some)


Thanks for any help, and sorry about the newbe questions.