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Blown Tweeter & midrange fuses Magnepan 3.6r

My problem is I keep blowing the tweeter fuses at a "somewhat" moderate volume. I inititially owned the Yamaha RV-1103 Surround Receiver and blew both the tweeter fuses at somewhere around 2/3 - 3/4 volume potentiometer setting. I heard that these speakers require a lot of high current. Many people drive these with 40 wpc mono-blocks in a good size room and don't complain of blown fuses.

I purchased a Krell HEAT (Showcase) system (125 wpc @ 8 ohm, doubling to 250 wpc a (Magnepan rated) 4 ohm load. I still have the same problem. In fact I have even blown the 5amp midrange fuses. The maximum power level on the Krell digital amplifier is 100). I set the level at 40 and still blow the tweeter fuses in both channels simultaneously. I have never heard any audible cliipping during these times, however, my hearing rolls off at 14 KHZ. I have had two different KRELL HEAT (Showcase) amplifiers driving them, with same results. I have an open floor plan 20' x 15' listening area and the volume levels are no where near ear-piercing levels. I'm beginning to think I purchased defective speakers. Can you help me?
What do you think ?
dtbrigh

Showing 2 responses by cytocycle

cytocycle
1,043 posts
 
400+ watts into 4 ohm, pull the speakers out into the room. If you are watching movies this will happen even more so with this few watts.
cytocycle
1,043 posts
 
Sgr:I too had MGIIIa's with 500watts a speaker and run into fuse problems with Techno or movies at that finite limit of volumn and cleaness but they were magically fast up to that point. I considered going with the MG20.1's and was concerned as sometime I can listen to thing louder than I should, and I couldn't really fit the 20.1's in the small space I had at the time. I found the Wilson Watt Puppy 7's capable of that precision quickness of the Mag's ribbon but with the Dynamics I craved (plus that whole 20-30hz bass my mags never really had).

The Magnepan 3.6's are still a bargain for their performance, another option is to look at using a fast sub (Rel) to cut out the 20-30hz bass and let the speakers relax a little more, but they will still beg to go louder because they play so clean.
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