Quote:
Originally Posted by TOGA
Oh no. Driving .7 at fairly loud volume caused the Krell to have Over Temp shut down. Messaged a high 81 degree C.
On display after shutdown.
This Maggie must be very current hungry.
Toga.
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From Stereophile measurements.
I measured the Krell K-300i using my Audio Precision SYS2722 system (see the January 2008 "As We See It"). I usually precondition amplifiers by running them at one- third power into 8 ohms for an hour. The Krell almost made it, turning itself off after 55 minutes, with the front-panel display showing the message "Over temperature left channel." The top panel over the heatsinks was hot, at 142.8°F (61.6°C), but cooler over the transformer at 113.1°F (45.1°C). This is a tough test for an amplifier with a class-AB output stage, as one-third power results in the maximum dissipation in the output devices.
The Krell has just sufficient heatsinking for its power rating but should be given plenty of space for ventilation.