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Class D Switching Power Amplifiers and Power D/A conversion

Class D audio power amplifier research
Class D audio power amplifier research
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Old 23rd October 2008, 04:10 PM   #31
rob mullen is offline rob mullen  Ireland
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Join Date: Oct 2008
Ok i have the Questionnaire ready to email out. Just PM me with your email address and i can send it on.
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Old 15th November 2008, 09:30 PM   #32
starstruck is offline starstruck  United Kingdom
diyAudio Member
Join Date: Mar 2008
Thought you might be interested in a customers point of view.

I just did a big outdoor gig with an ex winner of the x factor to around 10000 people.

We used a Meyer PA that used class D amps. There benifits to the live PA sector are :

Weight ! These amps were around 2KW per channel and they were only 1U high ! It would normally take a 3U box that weighs a ton! to get that amount of power. You try humping them about all day and you will soon switch to class D

Heat - When you use BIG class H amps they run hot , VERY HOT. The class D's hardly warmed up !! Also did you know that when semicinducters are manufatured they artificialy age them (burn-in) by powering them on and heating them up. So if your electronics run hot it will reduce its life span !!

Price - You get a lot of bang for your buck

Efficiency - If you are trying to run a huge system off a 32A supply every bit of power you can save helps.

And sound wise they sounded GREAT.

Hope this helps

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