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In: Automotive
With: 28 Comments

I purchased a 2013 Audi S7 this year. While I absolutely love the car, and I’m particularly impressed with the fast and smooth shifting of the S-tronic transmission. I was very surprised and a bit disappointed that the transmission fluid (and spark plugs) have a scheduled maintenance interval of 40,000 miles. This is overly frequent for a modern car; the very similar Porsche PDK transmission has a 120,000 mile service interval. Since I prefer to do to my own vehicle maintenance, I compiled a list of the required parts and a general overview of the transmission fluid change process. Transmission Model: 0B5 7-speed dual clutch,Read More →

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In: Home Theater
With: 23 Comments

In my quest for the ultimate home theater bass, I’d always felt that my single Velodyne HGS-15 subwoofer wasn’t delivering quite the low frequency experience I was expecting. Visits to local IMAX theater had me jealous. So I set out figure out what was missing. Much of what I learned is included in my other post entitled Ultimate Home Theater Subwoofer Designs, which describes Infinite Baffle and Folded Tapped Horn subwoofers. This post details how I installed an Infinite Baffle subwoofer system in my home theater. I chose an Infinite Baffle subwoofer design because it delivers extremely low frequencies with perfectly flat response. Those low, chair-shaking / chestRead More →

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In: Home Theater
With: 8 Comments

I used to think the only way to get ultimate subwoofer bass was to spend thousands of dollars on a prestigious brand of subwoofer. I thought that people who build their own subwoofers were fringe enthusiasts who cared more about building something than about sound quality. It turns out I was completely wrong. The opposite is true: DIY subwoofers can deliver sonic performance that’s impossible for commercial subs to replicate. Here’s an overview of the two of the most effective subwoofers you can build yourself. Overcoming the Subwoofer Enclosure Cabinet Size Constraint Most commercial subwoofers are focused on achieving the best possible performance from the smallest cabinet size possible. Small cabinet size isRead More →