What is the most FUN pair of speakers you've ever had and why?

ADS l810 speakers and the Braun 810 speaker's were fun fun fun as I had no T-Bird. The Phase linear amp may have something to do with it. Ignorance was bliss.

Not so much the speaker but the time. Girls, parties, music. Home-made 40" high plywood reflex cabs with 12" McKenzie full range drivers driven by a 70watt KT88 amp. LOUD.

A  DIY pair using JBL midrange and woofers plus Altec tweeters.  Picked up the drivers at an estate auction and built the cabinets in a local hobby shop. .  Didn't know too much about crossovers. but built several sets.  This was in the very early days of stereo, and I had loads of fun experimenting and learning. (This was well before the Thiele/Small parameters were published.)   Grandson has the JBL and Altec drivers, but hasn't asked me to listen to anything he's doing with them.   Oh Well.  

Tribit X Sound Go Bluetooth speaker considering it's size must be the best pound for pound speaker I have ever heard.

It's not stereo and it's far from wide bandwidth, but there's enough there for a whole load of fun. Lovely tone too.

Indispensably liberating for smartphone or MP3 player use.

That’s a tough one. I’d go between my KEF 104/2 , JBL L100t or my L7.