I was born in 1982 and until this week I had never heard the Bose 901 speakers. The Bose 901 has been around for 50+ years and has long been considered a divisive product within the audiophile community. The EQ was always in-line in my listening sessions.So, before anyone gets up in arms about this factor yes, I am fully aware of the potential limitation related to this speaker’s direct/reflective design. Although, one can make the case that the SPL is simply adjusted by +6dB for this proximity and transition from the standard 4-pi reference to a 2-pi reference (free space vs near-wall). And, at this point, I do not know how to manipulate the data in a way to “trick” the Spinorama graphics in to showing what would happen when you place them in the manner they were designed to be placed. The “Spinorama” data does not take this into account. I have attached an image below but to summarize: The speakers should be placed at least 18 inches from side walls (with a recommendation of 2-4 feet from side walls) and 8-16 inches from the rear wall. Some may be concerned that this “Spinorama” data doesn’t take in to affect the speakers needing to be close to a surface.Please pay attention to the titles otherwise you will get confused as to what is going on. The title of each graph tells you how the settings were made. Then I tested it with the EQ in-line, with a few different setting configurations. I tested the speaker “Raw” (without the EQ in-line) first. This speaker comes with an EQ that has all sorts of various slider positions. Pay attention to the Title of each graph.A few things that need to be stated up front before people skip this and go to the pictures:
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