Can anyone help me understand this ?

**leo** · 16-10-2009, 20:25

BTW also some classA SS amps are not that well designed for reliability , I've known some have things like capacitors too near say heatsinks which greatly reduces their life, some of the caps are not even rated for high temps, they go dry,leaky and noisy , this can have undesirable effects on performance especially if the caps are used in critical places.
When the amp rises in temp is when things start to go bad

This is not to say your amp is poorly designed of course (I don't know the Dussun V8i )

**Marc B** · 16-10-2009, 20:33

I did check for obvious leaking of caps when I first got the amp and I realised something was odd.

In the time I've made the thread today, the amp has now gained a large top end spike. An uncomfortable brightness sting that sits pretty much at the top of my hearing threashold, but the bass has evened out a bit and warmth has sort of returned to the bottom end.

The cycle is now taking hours instead of days... grrr

Maybe in a few days it'll sound like a phaser effect

**leo** · 16-10-2009, 21:15

Not so much leaking as can be seen but electrically

Harshness/brightness can be caused from instability , ears are good at detecting it

Anyway I'd be tempted to take it for a full check up tbh, sounds like it needs to be put on the test gear

**Marc B** · 16-10-2009, 21:22

Yeah I was thinking the same.

I don't suppose you know any repair place in or around Lancashire as this weighs about 40kg?

by the way , it sounds great now but tomorrow I'm expecting to be back at square one.

**Rare Bird** · 16-10-2009, 22:02

Marc i've a feeling your never gonna be happy with this amp even if you eradicated the problem, i'm guessing it's always gonna be in the back of your mind something could re occur...A simular amp would be one of the Esoteric range of amps..Probably the best Jap amps out at the mo.

http://www.esoteric.jp/products/esot...80/indexe.html

**Marc B** · 16-10-2009, 23:41

I'm sure I have a spare $20,000 fell down the back of the couch , let me just check

**Rare Bird** · 16-10-2009, 23:55

Sorry didnt realise the price..

**Themis** · 17-10-2009, 05:35

Originally Posted by Marc B

I'm sure I have a spare $20,000 fell down the back of the couch , let me just check

**Marc B** · 17-10-2009, 22:30

hmmm fixed ??

A swap of speaker cables and different cables between the Pre/power sections and it's spot on

how odd

Thread: Can anyone help me understand this ?

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