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Down sizing my amp rack

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Elliot Thompson View Drop Down
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Joined: 02 April 2004
Location: United States
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Elliot Thompson Quote  Post ReplyReply Direct Link To This Post Posted: 09 August 2018 at 12:47pm
Originally posted by citizensc citizensc wrote:

Would the Quattrocanali work well for touring? What makes an amp an 'install amp'. Is it engineered to not fall apart being moved around a lot? 


At times, an install amplifier require different input/output connections compared to an amplifier designed to be used on the road. In addition to different connections, the input gain controls are located on the rear of the amplifier to prevent curious fingers. There are also some installation amplifiers that offer 70-volt output loudspeaker connections which, enables you to use an output transformer to attain multiple loudspeakers distributed throughout the complex such as a Hospital.

Performance wise, installation amplifiers offer the same reliability as the version aimed for the road.

Best Regards,  

Elliot Thompson
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U.Viktor View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote U.Viktor Quote  Post ReplyReply Direct Link To This Post Posted: 09 August 2018 at 12:55pm
Three things are important:
1. Peak power (for at least several milli-seconds, not micro-seconds :-)
2. How quick falls the power down when pushed
3. What is the average long-term power for several tens of seconds

If you carefully check the power definition of low-frequency woofers you will see that
the maximum allowed Peak-to-longterm average ratio is around 1:4 (25%).

So if you have let us say a 10000W amp it must deliver at least 2500W average to the speakers.
Also you need to have as much as possible capacitors in the system to store energy delivering bursts without pulling down the mains! An amp with more caps, more Energy is definietely better!

The truth is that the Powersoft K10 can do more than 25%, it was ~50% when we measured while the K20 was not that good.

The X4 says it can do 5000W/ch which finally measured to be less than 400W which value is bellow 10% (=unacceptable for high duty ratio jobs)
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