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

Showing 13 responses by curiousjim

“I am a Audience AR6 power conditioner“

Should read, I have an  Audience, AR6, power conditioner.

JD

I’m still not sure it’s not my ears.

JD

 

I wish everything was recorded at the same level!

@spatialking ,

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

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

@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

@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

@erik_squires 

I hope you understood what I was trying to say.  I probably should stop posting after bedtime.🙁

JD

So this morning after everyone left, I put on several different CD’s and cranked the volume.  I played some jazz and some rock and maybe it’s because it was morning (?) nothing distorted!  I pulled out the sound meter and I got well into the 90’s and the light flashed when I went over 100.

I’m going to try this a couple more times. Listen at night and listen again in the morning.

Maybe there’s nothing wrong with my equipment or my room. Wow, maybe it’s my ears? 

Mmmmmm

@immatthewj,

I have pretty good power here, when it works. We’ve had seven transformers blow in the last fifteen months! I am a Audience AR6 power conditioner. 
 

Thanks for your thoughts.

JD

@franklinb66,

“Know Thy Room and Thy Self“

I like that and I have been working on it!

 Thanks.

JD

@spatialking 

I just reread your reply and here goes. No I haven’t noticed any warning lights. No blown fuse and my speaker wires are 8’ long.

JD

I am really sad to say it is my ears! Some of the music I listen to in the morning sounds good and sounds sharper in the evening. Same everything, Equipment, tunes and volume. If I keep it simple, like Bill Evans Trio or Art Pepper it is as bad, but the more instruments the worse it gets.