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  Updates, updates and some more info 
  Feb 23, 2006, 08:13am EST 
 
By: Sander Sassen

Alright, I know I've been slow to update you on the latest, but these past few weeks I've been woodworking most of the time, trying to complete a set of loudspeakers and two amplifiers for a local DIY hifi show I'll be attending. I won't just be a spectator, they've also asked me to give a presentation about the pros and cons of class-D amplifiers, which should be interesting. In the meantime I did complete a kit I recently ordered which is the Velleman K8020 tube preamplifier and wrote up my experience with it. I didn't have time to design one myself, as I initially planned to, and hence I went looking for something suitable. If youíve read the article you'll realize I liked the kit, but it needed a bit of work to wring every last bit of performance from it.

One cabinet drivers mounted

The Yellow Peril loudspeaker, and one empty cabinet.

Expect another article next week that'll discuss a popular commercial class-D amplifier. Iíve taken it through its paces in much the same way as we did with our recent Hypex UcD400 article and I can tell you beforehand that the manufacturer will have some questions to answer after I post my evaluation. To be honest I can't believe that they market it with soo much hype, as there really is nothing to it. I'll also continue work on my Yellow Peril loudspeakers this week and next. The first draft of the crossover filter is running in the simulator and looking good. I should have all the parts in to be able to build it by tomorrow so I should have something to report back on by next week.

Sander Sassen.

 

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Re: Updates, updates and some more info Sean Costello 1 replies Mar 03, 2006, 12:56am EST

 

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