Ki,
The latest makeover by Jeff Hedback (and built by Doug Carpenter, local custom woodwork expert and our go-to trade for all remodel work) was to a room that had already been designed and developed over the past 20 years. As i mentioned in my "intro yourself" post (hi from Rock-N-Roll capital) I have had 20+ Realtraps products making wonderful acoustic spaces in my room for many years, and am one of Ethan's testimonials in his ads. His room treatments are a major reason I could go this next step without a complete redo. However, the work that Jeff and Doug did was the final piece de resistance and was a complete custom designed solution whose raw components were very modest in cost. It helped my quality and my budget that Doug (who Jeff says "is in my very TOP TIER of contractors/craftsmen, ever") does his work for us at a very reasonable rate. The sum is greater than the parts. Costs are equivalent to moderately priced commercial diffusion options ~ $50/sq ft.
I probably spent less than $10k on this whole final project, and that includes data gathering, modeling, analysis, frequent project discussions, and then design/build and install of the various pieces. Those included the 400 lb MAT tuned resonator 'floating wall" for the front wall, side wall HAR slats and custom designed/built tetrahedral "sail" treatments, 6' x 12' ceiling diffusor and bass trapping (including custom acoustical hangers), front floor-to-ceiling corner traps, front wall finishing and screen relocation, painting (many lights, Realtraps and fixtures were moved and repurposed during this) and wood staining, and finally the before/after sound measurements.
I can't imagine the value I will receive long-term. Every listening session is as though my system has transformed from a struggling but musical "you are there" experience (took 10+ yrs of tweaking and system synergy changes to get to that level) to a very strong "they are here" palpability. Although I hate using percentages cuz they seem absurdly arbitrary I will here cuz I can't today express the magnitude of the "clean up" well enough. All recordings now sound almost 100% improved (and we audiophiles believe 25% increments are life-changing
).