How can I tell if I am overdriving the amp or the speakers?


I have a Hegel H390 driving KEF Reference 5 speakers and when I play something loud, the upper midrange ( saxophone, electric guitar, piano ) start sounding sharp and annoying. The amp is 250 x 2 into 8 ohms, stable down to 2 ohms and the speakers are 90 dbs, 8 ohm, ( min 3.2 ) 50-400 watts. I’m pretty sure it’s not room acoustics, but.

Thanks.

JD

128x128curiousjim

@spatialking ,

Lets see, no warning light. No blown fuses, oh and I have AQ, 8’ Rocket 88 speaker wire.

JD

@grannyring ,

15’ 6”x 20’ room with openings on every wall. Front end is either an Oppo, Audiolab 6000CDT or using upnp to a NAS. 8’ runs of AQ Rocket 88 wire. Speakers are 7’6” apart with my listening position at 7’6” and no toe-in.

JD

And while I am play some tunes loud, It’s no where near face melting volumes I’m talking about. I’ll put a meter to it tomorrow and give some numbers, but I’d be surprised if I was much past 85 dbs.

JD

@erik_squires ,

I have been moving some 2’x4’ foam, absorbing panels around as well as some pillows and even a couple of blankets. It’s hard to explain, but the room probably doesn’t have 60% walls and it was worse. Not one wall is solid all the way from side to side. The front wall is the closest with only a doorway (no door)

JD

I just googled the Hegel & those Kef speakers and wow.  If you can go by MSRP, that should be some pretty good stuff.