I have not tried the Marigo Room tuning dots, but have had great success with treating all my components with the various sizes/colors of Marigo dots. Speaker drivers and cabinets, vacuum tubes, I/C's, circuit boards, electrolytic caps and voltage regulators are treated in all of my components. 2mm & 3mm green and 3mm & 4mm white are the best sizes for speaker drivers and most components. 32mm black work best on speaker cabinets. They can be re-applied several times for the best combination and are guaranteed for life, as they can be exchanged for new stock if they will not stick properly after repeated experimentation. Ron at Marigo is a nice guy and can help you with suggestions and installation. He faxed me a diagram of my speakers and the best placement options. They work great. Improvements on each of the components that I treated were similar in magnitude and effect of replacing a stock power cord on a component with a high end power cord. Quieter, more musical presentation with a blacker background. Micro transient response is much enhanced as well. Speakers and pre-amp were probably the components that benefited the most. Give Ron a call about the window and room dots. Good luck.
