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Gallo Reference III midrange COOKED

They were purchased new from a dealer in 2007. I'm using an all PS Audio system (except for a Denon multi-player for a transport). I Was using a p300 power plant till about a month ago I purchased a Power Plant Premier here at Audiogon. Two weeks later the midrange drivers in both speakers are gone. They have since been to the factory for repair and returned. Repair wasn't covered by warranty. They said if the speaker was defective it would have already blown during the first three months.

My system:

Trio P200 pre amp

Digital Link III D/A converter (with Cullen Circuits level 3 mod)

GCA 250 Power amp

Power Plant Premier

The speakers are rated a 350 watts; but my PS Audio 250 watt amp cooked the midrange drivers in both speakers. Go figure...

Just wondering if anyone else out there may have had the same or similar problem?
be_godwin

Showing 1 response by audiokinesis

audiokinesis
2,755 posts
 
A 250 watt amp driven into mild clipping could easily heat the voice coil more than 350 watts peak of clean music signal.

What Elevick was told is however an exaggeration. It is heat, not a clipped waveform per se, that is damaging. From a thermal power handing standpoing, a clipped waveform simply means the average wattage (heat) going into the voice coil is much closer to the maximum wattage that the amp can put out. 500 watts peak unclipped might be ballpark 50 watts average (depends on the music of course), which is far higher than 1 watt clipped.
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