Axiom Engineer Andrew Welker continues with his description of how to design an in-wall loudspeakers to avoid any problems with reflections and diffractions1.
Andrew: Part two, in continuation of part one. A couple of important details. One, many in-wall speakers that you’ll see on the marketplace actually are sunk into the wall so that the drive units sit below where the drywall surface or the wallboard surface would be. That’s actually a very bad thing acoustically, because the wall edges that stick out past the drivers cause reflections and what’s called diffractions around the drive unit. So instead of getting a nice even spread and a spacious sound, you can get a very localized and closed-in sound, which sounds very unnatural. Log in
Continue reading Designing an In-Wall Speaker: Part II »
We’ve all been there – maybe it’s your house, maybe it’s a neighbour’s – where this time of year there is an ornament on every surface and no window is left unadorned. You know, the type of decorating that makes the mall look under-done . . . And that’s all well and good in some rooms, but in your man-cave? It’s asking too much!
Send in a photo of the most worst affront that has happened to your speakers when your family was decorating for the holidays! Stockings muffling your tweeters? Snowmen wiping out woofers? Post’em here – you’ll win our sympathy, and if the situation is the worst we’ve ever seen, you’ll win a $50 prize, too! Details. Log in
Continue reading Tis The Season . . . For Another Contest! »
One question that several of you have asked pertains to designing an in-wall speaker: how does it differ from designing a regular speaker? What factors do you have to take into account when you’re engineering it?
I caught up with Andrew Welker in our anechoic chamber (this time we put the floor in so I could turn the camera around!) and asked him about his strategy. Log in
Continue reading Designing an In-Wall Speaker »
Since the turn of the 20th century, we’ve seen recorded music stored in different formats and technologies. Take a look at the timeline!
1896 – Piano Rolls
A piano roll is a continuous roll of paper with holes punched into it. The perforations represent note control data. The roll moves over a reading system known as a ‘tracker bar’ and the playing cycle for each musical note is triggered when a perforation crosses the bar and is read.
1950 - Gramophone Record Log in
Continue reading The Evolution of Song Storage »