Speakers for low power tube amplifier

You might consider the Merlin VSM. You seem to like the TSMs a lot and the VSM offers an extended bandwidth variation on that theme. I got good performance at adequate (for my listening habit) spl from my VSM in a moderate sized room drive by 15 wpc Cary 300b amps.

Marty

PS - The I also own the Verity P/E (unfamiliar with the Finn) and have owned deCapos in the past. I concur with your description of the Merlin and Ref 3a, so I suspect that you're hearing a lot of the same things that I do, so...

The Verity P/E barks up a 180 degree different tree than the Merlin and/or the Ref 3a. Both the Ref 3a and the Merlin have tight, well damped bass response that IMHO gives both speakers some commonality to their voice. My take is that he Merlin has significantly more energy as frequencies climb, which really distinguishes their respective voices.

OTOH, my P/E has a gently rising but pronounced elevation thru the mid bass region. This makes it a much more forgiving speaker than either the Merlin or (to a lesser extent) the deCapo, but one that sounds quite different overall. It's a very, very good speaker, just one that approaches the task from the opposite side than Merlin or Ref 3a, so to speak. I don't know whether the Finn shares this quality, but - if you're coming from Merlin/Ref 3a - I'd say that an audition is 100% required before you switch to Verity.

You might be surprised in that your amp may be more powerful than you think. I have a VAC 30/30 which is also 2 300B's in push pull. It has a bit more power than your amp, but not that much. Right now I have it working very well with a pair of Wilson Cubs. They are very easy to drive. In the past, though, I had no problems driving: ProAC 2.5's, Vandersteen 1 & 2's, and even a pair of Martin Logan SL-3's. You should have no problems, at all, finding a speaker that will work well.

you've already got some great suggestions - one more to think about would be Zu Audio.

Thank you Marty for your response.
I like the Merlins and I will still use the TSM for a second system, but I don´t want to move to the VSM. Why? I don´t like the use of BAM. My system is real balanced configuration. The balanced BAM is too expensive and I have to add an extra expensive interconnect cable. I don´t know if I can use the VSM without the BAM.
Did you hear the Reference 3a Episode or the L´Integrale Noveau?

Please also consider Vandersteen 1C. One of the finest budget floor standers out there; time and phase aligned with exceptional bass response.