Bill dudleston biography

We key primarily on THD and impulse measurements initially when voicing new drivers, but we put strong emphasis on designing for low intermodulation distortion when creating speaker systems. Some of our manufacturers supply Klippel data at our request which provides extension data on non-linearities within the motor design. A subwoofer with a low steep filter is the acceptable exception to the rule.

I will typically port the design, and augment the alignment with a second-order high pass bass filter, just to reduce needless cone excursion requirements below the audible contribution bandwidth. Another source of electronic I. We are very careful about our choke cores for this reason. A better solution is to eliminate the inductors and move up to DSP crossovers.

AH : What measurements provide a true picture of performance and how a speaker will sound in a real room? Bill : We measure the pressure response and also the power response as the first order reflections emanate from our side walls. A compact two-way design will sound essentially as you place it. For example, when placed on the floor it can sound boomy, when placed in the middle of the room it can sound lean Thus the advantage of our larger, multi-way speakers that come with DSP.

The DSP allows you to take advantage of boundary reinforcement while addressing peaks in the response. We accept that distortion is proportional to displacement. For that reason our designs tend to have ample piston area. The radiation pattern of a loudspeaker dramatically influences the sonic signature of a loudspeaker. AH : We notice that your speakers have a lot of drivers for the bass and mid frequencies.

What's the idea there?

Bill dudleston biography

Bill : The wavelength at 10kHz is a bit more than an inch. And at Hz it is over ten feet. For every octave we drop, cone excursion requirements increase by a factor of four. Therefore to maintain reasonably uniform directivity and low distortion, the radiating area must increase with the wavelength. AH : What type of testing and quality control do you perform on your products?

We hand-tune the crossovers of every pair to a reference curve. Article Talk. Read Edit View history. Tools Tools. Download as PDF Printable version. In other projects. Wikidata item. Bill Dudleston Engineer, Organization founder 27 Views. Who is Bill Dudleston? We need you! Help us build the largest biographies collection on the web! Add a New Bio.

Dudleston continues as an innovator in the areas of DSP, digital amplification and wave-launch reconstruction. It has utilized my chemical engineering, physics and mathematics background almost daily. It has offered moments of both humility and glory, but most gratifying is the reward of continual, stair-stepped successes even after 30 years.