My room is larger than yours (see my system page for full details on room and components) and I think I have plenty of speaker for where I listen. I only listed to the ProAc Studio 125 (beautiful midrange) and ProAc D20 before I ordered my 148s. Why did I go with the 148s? They have the same (non-ribbon) tweeter as the current D response line, same great midrange (125 still had better) and have better low end control with the 2.5 way design. I've heard the 148s are a more refined version of the 140 mkII as they went to different drivers.
I would consider the following upgrades for your 140 mkII ProAcs:
1. Get some Soundocity SEV9 outriggers. I use these and are much more rigid and stable than the factory ProAc spikes. The SEV9s are also flexible enough to use with other tower designs.
2. Upgrade your speaker drivers and crossovers to the 148's configuration.
Does anyone have recommendation for crossover upgrades for my Studio 148s? I would love to get my 148s even closer to the 125's midrange with an even more refined sound.
I would consider the following upgrades for your 140 mkII ProAcs:
1. Get some Soundocity SEV9 outriggers. I use these and are much more rigid and stable than the factory ProAc spikes. The SEV9s are also flexible enough to use with other tower designs.
2. Upgrade your speaker drivers and crossovers to the 148's configuration.
Does anyone have recommendation for crossover upgrades for my Studio 148s? I would love to get my 148s even closer to the 125's midrange with an even more refined sound.