RBH Sound Impression Series – The Impression Series of loudspeakers from RBH Sound provides homeowners with a choice of six in-room loudspeakers. The company says the speakers’ cabinets utilize MDF and curved shapes to provide a combination of inert strength and minimal coloration due to factors such as diffraction. The speakers’ internally employ soft-dome tweeters and RBH’s own aluminum-cone woofers. RBH offers the speakers in a choice of satin or gloss black finishes.