This speaker comes to us from the mind of fellow DIY’r and speaker builder, Rick Craig of Selah Audio. You can find the manufacturer’s information here but I have provided some snippets below:
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If you want help understanding what this data means, watch the video below.
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Dennis Murphy designed the Philharmonic BMR some years back and it lit up the DIY circuit. This is a 3-way “bookshelf” (a big bookshelf) incorporating the following drive units: RAAL, 64-10 Ribbon Tweeter, BMR 2.5″ Midrange, and Scan-Speak 18W8545-1 Paper-carbon cone woofer. There are countless threads about this speaker and the design available via a simple Google search so I won’t spend my time going on about it. It is important to note, though, this speaker tested is in a different cabinet than current offerings. This shouldn’t effect the results of the test considerably (I assume the same volume and port tuning is used with the various enclosure shapes) but it is worth noting as some response differences can arise with a rounded enclosure with a flat baffle vs other designs some may come up with for their own enclosure.
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I stumbled on talk of the Neumi BS5 speaker recently in the context of a potential high-value speaker. Out of curiosity, I went to the product page on Amazon to check them out and liked what I saw. I then pulled up the Neumi’s BS5 manual here is the link where I saw placement recommendations, and some other bits of information which all gave me the impression the manufacturer cares about how the user listens to their product rather than the old “sink or swim” attitude low-cost products leave you with. Generally, when this information is laid out for the user it also implies the product is worthwhile. At least, that’s the impression I am left with in those cases.
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A few months ago, I came across a forum post that touched on Buchardt Audio’s S400 bookshelf speaker. I took a visit to their website to read about it and was (pleasantly) surprised to find the manufacturer provides a set of objective data as well as thorough explanation regarding the design choices. For example: the discussion regarding the tweeter/waveguide assembly and the benefit of controlled directivity (which is, essentially, maintaining the same response profile as the listener moves off-axis from the intended listening axis; the output decreases but the shape varies little when compared to conventional tweeter designs). I don’t have the funds to make costly purchases for review, so I reached out to Mads at Buchardt and inquired about getting a demo pair to try out. Yes, I know to some that is bothersome as it could imply bias but that’s how it is when you’re on a budget and no owner is willing to offer their own samples for test. Mads appreciated that my review goal was objective-data oriented and arranged for me to receive a demo set.
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