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Now how do you think they are going to accomplish this?


By selling him more stuff after evaluating one's listening room.
I've heard of companies that do this to get their foot inside your house.
If they really only setup the receiver and speakers with distances and SPL adjustments, they are not worth even paying them twenty bucks for the job.
Read the receiver manual.
It's damn easy.

"Those who preach the myths of audio are ignorant of truth."